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    <link:label id="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_label_en-US" xlink:label="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]</link:label>
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    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivableProceedsFromPremiumsReceived_d51e0457-493c-401e-b7bc-aacac111160f_negatedLabel_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivableProceedsFromPremiumsReceived" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Gross premiums received, net of commissions</link:label>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivableProceedsFromPremiumsReceived_label_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivableProceedsFromPremiumsReceived" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Premium Receivable, Proceeds from Premiums Received</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivableProceedsFromPremiumsReceived" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivableProceedsFromPremiumsReceived"/>
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    <link:label id="lab_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_bf96e531-6948-4d32-bc8b-7bfa576d9a03_terseLabel_en-US" xlink:label="lab_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Remaining capacity of shares repurchase program</link:label>
    <link:label id="lab_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_label_en-US" xlink:label="lab_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share Repurchase Program, Remaining Authorized, Amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1"/>
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    <link:label id="lab_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_0b3e0ba9-86af-4b1b-9a1a-249b22f42490_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected tax provision (benefit)</link:label>
    <link:label id="lab_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_label_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate"/>
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    <link:label id="lab_dei_CoverAbstract_2be70a42-379b-4033-8ae1-3121bc477bc1_terseLabel_en-US" xlink:label="lab_dei_CoverAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cover [Abstract]</link:label>
    <link:label id="lab_dei_CoverAbstract_label_en-US" xlink:label="lab_dei_CoverAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cover [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CoverAbstract" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_CoverAbstract"/>
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    <link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_00d2ac32-02ad-419b-8e96-18fa08357aa3_totalLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Increase (decrease) in cash and cash equivalents and restricted cash</link:label>
    <link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_label_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
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    <link:label id="lab_us-gaap_MeasurementInputDiscountRateMember_313f88b8-74e8-4795-9822-1739cb4e345f_terseLabel_en-US" xlink:label="lab_us-gaap_MeasurementInputDiscountRateMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Discount margin</link:label>
    <link:label id="lab_us-gaap_MeasurementInputDiscountRateMember_label_en-US" xlink:label="lab_us-gaap_MeasurementInputDiscountRateMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Measurement Input, Discount Rate [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputDiscountRateMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MeasurementInputDiscountRateMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MeasurementInputDiscountRateMember" xlink:to="lab_us-gaap_MeasurementInputDiscountRateMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_VariableInterestEntityConsolidatedLiabilitiesAtFairValue_579317b0-a984-43ed-ad36-3d142215dd72_terseLabel_en-US" xlink:label="lab_ago_VariableInterestEntityConsolidatedLiabilitiesAtFairValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial guaranty variable interest entities&#8217; liabilities, at fair value (with recourse $383 and $543, without recourse $10 and $11)</link:label>
    <link:label id="lab_ago_VariableInterestEntityConsolidatedLiabilitiesAtFairValue_57aebc85-3f9f-4283-b7b4-6350176497bb_verboseLabel_en-US" xlink:label="lab_ago_VariableInterestEntityConsolidatedLiabilitiesAtFairValue" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">FG VIEs' liabilities</link:label>
    <link:label id="lab_ago_VariableInterestEntityConsolidatedLiabilitiesAtFairValue_label_en-US" xlink:label="lab_ago_VariableInterestEntityConsolidatedLiabilitiesAtFairValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable Interest Entity, Consolidated, Liabilities, at Fair Value</link:label>
    <link:label id="lab_ago_VariableInterestEntityConsolidatedLiabilitiesAtFairValue_documentation_en-US" xlink:label="lab_ago_VariableInterestEntityConsolidatedLiabilitiesAtFairValue" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Variable Interest Entity, Consolidated, Liabilities, at Fair Value</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_VariableInterestEntityConsolidatedLiabilitiesAtFairValue" xlink:href="ago-20240630.xsd#ago_VariableInterestEntityConsolidatedLiabilitiesAtFairValue"/>
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    <link:label id="lab_ago_InternalInvestmentGradeAAAMember_51fd98da-6a0e-4fce-8754-422bd7a3022c_terseLabel_en-US" xlink:label="lab_ago_InternalInvestmentGradeAAAMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">AAA</link:label>
    <link:label id="lab_ago_InternalInvestmentGradeAAAMember_label_en-US" xlink:label="lab_ago_InternalInvestmentGradeAAAMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Internal Investment Grade, AAA [Member]</link:label>
    <link:label id="lab_ago_InternalInvestmentGradeAAAMember_documentation_en-US" xlink:label="lab_ago_InternalInvestmentGradeAAAMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The entity's internal risk assessment category, AAA, representing the second lowest risk level. 1</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InternalInvestmentGradeAAAMember" xlink:href="ago-20240630.xsd#ago_InternalInvestmentGradeAAAMember"/>
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    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest_15ae9ebb-dfb5-4b9e-b3d0-7121f9677e8f_verboseLabel_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Allowance for credit loss</link:label>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest_7bec31a1-ae26-4e9e-8e68-0e25e21156f6_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Allowance for Credit Losses</link:label>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest_8caed225-6040-439a-b64f-d30ad4d25155_periodStartLabel_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Balance, beginning of period</link:label>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest_54b718ec-267c-407e-9afb-bab5cd0ecfdf_periodEndLabel_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Balance, end of period</link:label>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest_label_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest"/>
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    <link:label id="lab_us-gaap_IncomeTaxAuthorityDomain_a6a0265a-832f-4e0d-8563-b226db3ae58a_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxAuthorityDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income Tax Authority [Domain]</link:label>
    <link:label id="lab_us-gaap_IncomeTaxAuthorityDomain_label_en-US" xlink:label="lab_us-gaap_IncomeTaxAuthorityDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Jurisdiction [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain" xlink:to="lab_us-gaap_IncomeTaxAuthorityDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsYearFour_19c6f38d-1d41-4a06-b80e-9663c8f45580_terseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsYearFour" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2028</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsYearFour_label_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsYearFour" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Contractual Payments, Year Four</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsYearFour_documentation_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsYearFour" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Contractual Payments, Year Four</link:label>
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    <link:label id="lab_dei_TradingSymbol_ea66e3b0-9569-4719-89c6-fbe2a990fd45_terseLabel_en-US" xlink:label="lab_dei_TradingSymbol" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Trading Symbol</link:label>
    <link:label id="lab_dei_TradingSymbol_label_en-US" xlink:label="lab_dei_TradingSymbol" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Trading Symbol</link:label>
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    <link:label id="lab_us-gaap_CommonStockDividendsPerShareDeclared_2841c036-ddef-4db7-b7fb-3db9cc4c9d61_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockDividendsPerShareDeclared" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Dividends per share (in dollars per share)</link:label>
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    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedAccretiononNetEarnedPremium_4e8f790b-8e8d-4ff2-a8cf-a84cfbcfa610_terseLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedAccretiononNetEarnedPremium" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Future accretion</link:label>
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    <link:label id="lab_ago_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateAbstract_d4307bcd-e7e5-4109-bb87-4bbbf4acdd6f_terseLabel_en-US" xlink:label="lab_ago_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_ago_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateAbstract_label_en-US" xlink:label="lab_ago_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate [Abstract]</link:label>
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    <link:label id="lab_ago_DisposalGroupIncludingDiscontinuedOperationConsiderationEquityInterestOwnershipPercentage_d270fabd-e69a-4628-8301-3da3a2f15b23_terseLabel_en-US" xlink:label="lab_ago_DisposalGroupIncludingDiscontinuedOperationConsiderationEquityInterestOwnershipPercentage" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Participation percentage</link:label>
    <link:label id="lab_ago_DisposalGroupIncludingDiscontinuedOperationConsiderationEquityInterestOwnershipPercentage_label_en-US" xlink:label="lab_ago_DisposalGroupIncludingDiscontinuedOperationConsiderationEquityInterestOwnershipPercentage" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disposal Group, Including Discontinued Operation, Consideration, Equity Interest, Ownership Percentage</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ago_DisposalGroupIncludingDiscontinuedOperationConsiderationEquityInterestOwnershipPercentage" xlink:href="ago-20240630.xsd#ago_DisposalGroupIncludingDiscontinuedOperationConsiderationEquityInterestOwnershipPercentage"/>
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    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTaxAbstract_769414be-9c00-4e09-917f-f2255409ece1_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTaxAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Less: Amounts reclassified from AOCI to:</link:label>
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    <link:label id="lab_us-gaap_ShortTermInvestmentsMember_eb9df8bb-79b0-4a4c-b8fe-7010acfce528_terseLabel_en-US" xlink:label="lab_us-gaap_ShortTermInvestmentsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Short-term investments</link:label>
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    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsYearThree_d06e1f0d-bdac-4e8f-8c05-9731c3df0faa_terseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsYearThree" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2027</link:label>
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    <link:label id="lab_us-gaap_FairValueDisclosuresTextBlock_2b2a50de-997d-4e0f-99f3-d737a98f5c08_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueDisclosuresTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value Measurement</link:label>
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    <link:label id="lab_ago_PercentageofAvailableforsaleSecuritiesatAmortizedCost_9cc869dd-939a-493c-8f22-ec04b39273f3_terseLabel_en-US" xlink:label="lab_ago_PercentageofAvailableforsaleSecuritiesatAmortizedCost" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percent of Total</link:label>
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    <link:label id="lab_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_8d1ace59-e0a1-474e-9c36-0b7a9443fadb_totalLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Change in net unrealized gains (losses) on investments</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AwardTmgDiscLineItems" xlink:to="lab_ecd_AwardTmgDiscLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeMember_418b0a51-010c-405e-877b-090942a70e51_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss)</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeMember_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss) [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeMember" xlink:to="lab_us-gaap_OtherComprehensiveIncomeMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_AvailableforsaleDebtSecuritiesNumberofInstruments_f4a5e651-c8fa-4c93-b0cf-de032ae63180_terseLabel_en-US" xlink:label="lab_ago_AvailableforsaleDebtSecuritiesNumberofInstruments" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of fixed maturity securities valued using model processes</link:label>
    <link:label id="lab_ago_AvailableforsaleDebtSecuritiesNumberofInstruments_label_en-US" xlink:label="lab_ago_AvailableforsaleDebtSecuritiesNumberofInstruments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available-for-sale Debt Securities, Number of Instruments</link:label>
    <link:label id="lab_ago_AvailableforsaleDebtSecuritiesNumberofInstruments_documentation_en-US" xlink:label="lab_ago_AvailableforsaleDebtSecuritiesNumberofInstruments" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the number of fixed maturity securities and short-term investments which have been valued using model processes set by the entity.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_AvailableforsaleDebtSecuritiesNumberofInstruments" xlink:href="ago-20240630.xsd#ago_AvailableforsaleDebtSecuritiesNumberofInstruments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_AvailableforsaleDebtSecuritiesNumberofInstruments" xlink:to="lab_ago_AvailableforsaleDebtSecuritiesNumberofInstruments" xlink:type="arc" order="1"/>
    <link:label id="lab_srt_EquityMethodInvesteeNameDomain_2fdc0e12-0e1c-4d1c-8a31-3f2f5443608a_terseLabel_en-US" xlink:label="lab_srt_EquityMethodInvesteeNameDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investment, Name [Domain]</link:label>
    <link:label id="lab_srt_EquityMethodInvesteeNameDomain_label_en-US" xlink:label="lab_srt_EquityMethodInvesteeNameDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investment, Name [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_EquityMethodInvesteeNameDomain" xlink:to="lab_srt_EquityMethodInvesteeNameDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_DerivativeGainLossOnDerivativeNet_fdb7ede8-0f5c-4a23-8734-6829e048b98b_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeGainLossOnDerivativeNet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair value gains (losses) on credit derivatives</link:label>
    <link:label id="lab_us-gaap_DerivativeGainLossOnDerivativeNet_c6afc101-3065-4a4a-a348-3ece8c633358_totalLabel_en-US" xlink:label="lab_us-gaap_DerivativeGainLossOnDerivativeNet" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Fair value gains (losses) on credit derivatives</link:label>
    <link:label id="lab_us-gaap_DerivativeGainLossOnDerivativeNet_label_en-US" xlink:label="lab_us-gaap_DerivativeGainLossOnDerivativeNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative, Gain (Loss) on Derivative, Net</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeGainLossOnDerivativeNet" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeGainLossOnDerivativeNet"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeGainLossOnDerivativeNet" xlink:to="lab_us-gaap_DerivativeGainLossOnDerivativeNet" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_VariableInterestEntityConsolidatedAssetsatFairValue_710702a6-f811-40ab-bb99-a7bc347029d1_terseLabel_en-US" xlink:label="lab_ago_VariableInterestEntityConsolidatedAssetsatFairValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial guaranty variable interest entities' assets</link:label>
    <link:label id="lab_ago_VariableInterestEntityConsolidatedAssetsatFairValue_a41396a7-306c-4f2b-85eb-f87b3b3b75cc_verboseLabel_en-US" xlink:label="lab_ago_VariableInterestEntityConsolidatedAssetsatFairValue" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">FG VIEs&#8217; assets</link:label>
    <link:label id="lab_ago_VariableInterestEntityConsolidatedAssetsatFairValue_label_en-US" xlink:label="lab_ago_VariableInterestEntityConsolidatedAssetsatFairValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable Interest Entity, Consolidated, Assets at Fair Value</link:label>
    <link:label id="lab_ago_VariableInterestEntityConsolidatedAssetsatFairValue_documentation_en-US" xlink:label="lab_ago_VariableInterestEntityConsolidatedAssetsatFairValue" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Variable Interest Entity, Consolidated, Assets at Fair Vale</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_VariableInterestEntityConsolidatedAssetsatFairValue" xlink:href="ago-20240630.xsd#ago_VariableInterestEntityConsolidatedAssetsatFairValue"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_VariableInterestEntityConsolidatedAssetsatFairValue" xlink:to="lab_ago_VariableInterestEntityConsolidatedAssetsatFairValue" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_LossContingencyDamagesSoughtEstimate_b9893594-5a25-4916-831a-86b4dd1102e8_terseLabel_en-US" xlink:label="lab_ago_LossContingencyDamagesSoughtEstimate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Damages sought, estimate</link:label>
    <link:label id="lab_ago_LossContingencyDamagesSoughtEstimate_label_en-US" xlink:label="lab_ago_LossContingencyDamagesSoughtEstimate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Contingency, Damages Sought, Estimate</link:label>
    <link:label id="lab_ago_LossContingencyDamagesSoughtEstimate_documentation_en-US" xlink:label="lab_ago_LossContingencyDamagesSoughtEstimate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Loss Contingency, Damages Sought, Estimate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_LossContingencyDamagesSoughtEstimate" xlink:href="ago-20240630.xsd#ago_LossContingencyDamagesSoughtEstimate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_LossContingencyDamagesSoughtEstimate" xlink:to="lab_ago_LossContingencyDamagesSoughtEstimate" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_PortionAtFairValueFairValueDisclosureMember_799444bd-00b8-4b7a-935f-617ad926869b_terseLabel_en-US" xlink:label="lab_us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Portion at Fair Value Measurement</link:label>
    <link:label id="lab_us-gaap_PortionAtFairValueFairValueDisclosureMember_label_en-US" xlink:label="lab_us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Portion at Fair Value Measurement [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:to="lab_us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearFiveToNine_762b05bf-23c3-4eb3-a123-885ecf2b2f4f_terseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearFiveToNine" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2029-2033</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearFiveToNine_label_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearFiveToNine" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Principal Amount, Year Five To Nine</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearFiveToNine_documentation_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearFiveToNine" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Principal Amount, Year Five To Nine</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearFiveToNine" xlink:href="ago-20240630.xsd#ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearFiveToNine"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearFiveToNine" xlink:to="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearFiveToNine" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_LossContingencyCreditDerivativeTransactionImproperlyTerminatedAsPerTheAllegationsOfThePlaintiffNumber_20df271a-d396-4f6c-91d9-cc52ac6ec470_terseLabel_en-US" xlink:label="lab_ago_LossContingencyCreditDerivativeTransactionImproperlyTerminatedAsPerTheAllegationsOfThePlaintiffNumber" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of credit derivative transactions for which termination payment is alleged to be improperly calculated</link:label>
    <link:label id="lab_ago_LossContingencyCreditDerivativeTransactionImproperlyTerminatedAsPerTheAllegationsOfThePlaintiffNumber_label_en-US" xlink:label="lab_ago_LossContingencyCreditDerivativeTransactionImproperlyTerminatedAsPerTheAllegationsOfThePlaintiffNumber" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Contingency, Credit Derivative Transaction, Improperly Terminated As Per The Allegations Of The Plaintiff, Number</link:label>
    <link:label id="lab_ago_LossContingencyCreditDerivativeTransactionImproperlyTerminatedAsPerTheAllegationsOfThePlaintiffNumber_documentation_en-US" xlink:label="lab_ago_LossContingencyCreditDerivativeTransactionImproperlyTerminatedAsPerTheAllegationsOfThePlaintiffNumber" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the number of credit derivative transactions which the entity has improperly terminated as per the allegations of the plaintiff.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_LossContingencyCreditDerivativeTransactionImproperlyTerminatedAsPerTheAllegationsOfThePlaintiffNumber" xlink:href="ago-20240630.xsd#ago_LossContingencyCreditDerivativeTransactionImproperlyTerminatedAsPerTheAllegationsOfThePlaintiffNumber"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_LossContingencyCreditDerivativeTransactionImproperlyTerminatedAsPerTheAllegationsOfThePlaintiffNumber" xlink:to="lab_ago_LossContingencyCreditDerivativeTransactionImproperlyTerminatedAsPerTheAllegationsOfThePlaintiffNumber" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_LiabilitiesofConsolidatedInvestmentVehiclesMember_289430d0-6a80-4ba7-a17f-0b86fd11affc_terseLabel_en-US" xlink:label="lab_ago_LiabilitiesofConsolidatedInvestmentVehiclesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Liabilities of CIVs (9)</link:label>
    <link:label id="lab_ago_LiabilitiesofConsolidatedInvestmentVehiclesMember_label_en-US" xlink:label="lab_ago_LiabilitiesofConsolidatedInvestmentVehiclesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities of Consolidated Investment Vehicles [Member]</link:label>
    <link:label id="lab_ago_LiabilitiesofConsolidatedInvestmentVehiclesMember_documentation_en-US" xlink:label="lab_ago_LiabilitiesofConsolidatedInvestmentVehiclesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Liabilities of Consolidated Investment Vehicles [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_LiabilitiesofConsolidatedInvestmentVehiclesMember" xlink:href="ago-20240630.xsd#ago_LiabilitiesofConsolidatedInvestmentVehiclesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_LiabilitiesofConsolidatedInvestmentVehiclesMember" xlink:to="lab_ago_LiabilitiesofConsolidatedInvestmentVehiclesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_OtherMember_5f8656ad-c772-49e1-87c7-f6f6303395a8_terseLabel_en-US" xlink:label="lab_ago_OtherMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other</link:label>
    <link:label id="lab_ago_OtherMember_label_en-US" xlink:label="lab_ago_OtherMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other [Member]</link:label>
    <link:label id="lab_ago_OtherMember_documentation_en-US" xlink:label="lab_ago_OtherMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_OtherMember" xlink:href="ago-20240630.xsd#ago_OtherMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_OtherMember" xlink:to="lab_ago_OtherMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancingReceivablePeriodPastDueAxis_0bd66e7f-3865-48b8-a0e0-26064f83742a_terseLabel_en-US" xlink:label="lab_ago_FinancingReceivablePeriodPastDueAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financing Receivable, Period Past Due [Axis]</link:label>
    <link:label id="lab_ago_FinancingReceivablePeriodPastDueAxis_label_en-US" xlink:label="lab_ago_FinancingReceivablePeriodPastDueAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Receivable, Period Past Due [Axis]</link:label>
    <link:label id="lab_ago_FinancingReceivablePeriodPastDueAxis_documentation_en-US" xlink:label="lab_ago_FinancingReceivablePeriodPastDueAxis" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Information by period in which financing receivables are past due.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancingReceivablePeriodPastDueAxis" xlink:href="ago-20240630.xsd#ago_FinancingReceivablePeriodPastDueAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancingReceivablePeriodPastDueAxis" xlink:to="lab_ago_FinancingReceivablePeriodPastDueAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_SegmentReportingPolicyPolicyTextBlock_285b7f01-31bf-4f07-869e-cb2122b34016_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentReportingPolicyPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Segment Information</link:label>
    <link:label id="lab_us-gaap_SegmentReportingPolicyPolicyTextBlock_label_en-US" xlink:label="lab_us-gaap_SegmentReportingPolicyPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segment Reporting, Policy [Policy Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingPolicyPolicyTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SegmentReportingPolicyPolicyTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentReportingPolicyPolicyTextBlock" xlink:to="lab_us-gaap_SegmentReportingPolicyPolicyTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_MeasurementInputPriceToEarningsMember_8784357e-70b4-4c82-9dff-37d5bf657cb2_terseLabel_en-US" xlink:label="lab_ago_MeasurementInputPriceToEarningsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Exit multiple-price to earnings</link:label>
    <link:label id="lab_ago_MeasurementInputPriceToEarningsMember_label_en-US" xlink:label="lab_ago_MeasurementInputPriceToEarningsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Measurement Input, Price to Earnings [Member]</link:label>
    <link:label id="lab_ago_MeasurementInputPriceToEarningsMember_documentation_en-US" xlink:label="lab_ago_MeasurementInputPriceToEarningsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Measurement Input, Price to Earnings</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_MeasurementInputPriceToEarningsMember" xlink:href="ago-20240630.xsd#ago_MeasurementInputPriceToEarningsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_MeasurementInputPriceToEarningsMember" xlink:to="lab_ago_MeasurementInputPriceToEarningsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountFirstQuarterAfterPeriodEnd_22f873f4-02a8-4628-bc22-f098fdab139e_terseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountFirstQuarterAfterPeriodEnd" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2024 (July 1 - September 30)</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountFirstQuarterAfterPeriodEnd_label_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountFirstQuarterAfterPeriodEnd" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Principal Amount, First Quarter After Period End</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountFirstQuarterAfterPeriodEnd_documentation_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountFirstQuarterAfterPeriodEnd" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Principal Amount, First Quarter After Period End</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountFirstQuarterAfterPeriodEnd" xlink:href="ago-20240630.xsd#ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountFirstQuarterAfterPeriodEnd"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountFirstQuarterAfterPeriodEnd" xlink:to="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountFirstQuarterAfterPeriodEnd" xlink:type="arc" order="1"/>
    <link:label id="lab_country_US_9647c674-d1ea-4552-95df-a3e90a39a54e_terseLabel_en-US" xlink:label="lab_country_US" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">United States</link:label>
    <link:label id="lab_country_US_label_en-US" xlink:label="lab_country_US" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">UNITED STATES</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_country_US" xlink:href="https://xbrl.sec.gov/country/2024/country-2024.xsd#country_US"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_country_US" xlink:to="lab_country_US" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents_18d8c10c-7e7f-4cd5-975f-d0234164f326_terseLabel_en-US" xlink:label="lab_us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash (included in assets held for sale)</link:label>
    <link:label id="lab_us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents_label_en-US" xlink:label="lab_us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disposal Group, Including Discontinued Operation, Cash and Cash Equivalents</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents" xlink:to="lab_us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearOne_931c6db7-0cdf-42ac-920c-79c817833005_terseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearOne" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2025</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearOne_label_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearOne" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Contractual Payments, Year One</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearOne_documentation_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearOne" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Contractual Payments, Year One</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearOne" xlink:href="ago-20240630.xsd#ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearOne"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearOne" xlink:to="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearOne" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_VariableInterestEntityDisclosureTextBlock_85ce0a0a-be28-41c0-8a02-6ad5758b4f7c_terseLabel_en-US" xlink:label="lab_us-gaap_VariableInterestEntityDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial Guaranty Variable Interest Entities and Consolidated Investment Vehicles</link:label>
    <link:label id="lab_us-gaap_VariableInterestEntityDisclosureTextBlock_label_en-US" xlink:label="lab_us-gaap_VariableInterestEntityDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable Interest Entity Disclosure [Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityDisclosureTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VariableInterestEntityDisclosureTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_VariableInterestEntityDisclosureTextBlock" xlink:to="lab_us-gaap_VariableInterestEntityDisclosureTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_OperatingSegmentsMember_bca4199e-8217-479b-abef-0bbd20bde170_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingSegmentsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating Segments</link:label>
    <link:label id="lab_us-gaap_OperatingSegmentsMember_label_en-US" xlink:label="lab_us-gaap_OperatingSegmentsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Segments [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingSegmentsMember" xlink:to="lab_us-gaap_OperatingSegmentsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_PotentialFutureCommitment_6e6789df-d467-4be0-b989-2a87695bdd9e_terseLabel_en-US" xlink:label="lab_ago_PotentialFutureCommitment" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Potential future commitment</link:label>
    <link:label id="lab_ago_PotentialFutureCommitment_label_en-US" xlink:label="lab_ago_PotentialFutureCommitment" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Potential Future Commitment</link:label>
    <link:label id="lab_ago_PotentialFutureCommitment_documentation_en-US" xlink:label="lab_ago_PotentialFutureCommitment" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Potential Future Commitment</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_PotentialFutureCommitment" xlink:href="ago-20240630.xsd#ago_PotentialFutureCommitment"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_PotentialFutureCommitment" xlink:to="lab_ago_PotentialFutureCommitment" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsNetEarnedPremiumsTableTextBlock_47acc163-f44d-4b00-aeda-b7168f585df9_terseLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsNetEarnedPremiumsTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net Earned Premiums</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsNetEarnedPremiumsTableTextBlock_label_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsNetEarnedPremiumsTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Net Earned Premiums [Table Text Block]</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsNetEarnedPremiumsTableTextBlock_documentation_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsNetEarnedPremiumsTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tabular disclosure of the net premium earned with respect to financial guarantee insurance contracts.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuaranteeInsuranceContractsNetEarnedPremiumsTableTextBlock" xlink:href="ago-20240630.xsd#ago_FinancialGuaranteeInsuranceContractsNetEarnedPremiumsTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuaranteeInsuranceContractsNetEarnedPremiumsTableTextBlock" xlink:to="lab_ago_FinancialGuaranteeInsuranceContractsNetEarnedPremiumsTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_0544e94b-18e7-442f-8fc8-fbefdb768c20_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net cash flows provided by (used in) operating activities</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Operating Activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_6e1770af-3d6b-4705-981b-92cebafb9cb7_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Changes in Accumulated Other Comprehensive Income by Component</link:label>
    <link:label id="lab_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_label_en-US" xlink:label="lab_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock" xlink:to="lab_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_AwardTmgMethodTextBlock_terseLabel_en-US" xlink:label="lab_ecd_AwardTmgMethodTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Award Timing Method</link:label>
    <link:label id="lab_ecd_AwardTmgMethodTextBlock_label_en-US" xlink:label="lab_ecd_AwardTmgMethodTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Award Timing Method [Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AwardTmgMethodTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_AwardTmgMethodTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AwardTmgMethodTextBlock" xlink:to="lab_ecd_AwardTmgMethodTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_TradingArrByIndTable_terseLabel_en-US" xlink:label="lab_ecd_TradingArrByIndTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Trading Arrangements, by Individual</link:label>
    <link:label id="lab_ecd_TradingArrByIndTable_label_en-US" xlink:label="lab_ecd_TradingArrByIndTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Trading Arrangements, by Individual [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_TradingArrByIndTable" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_TradingArrByIndTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_TradingArrByIndTable" xlink:to="lab_ecd_TradingArrByIndTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationExpectedCashFlowsAbstract_b44b8c5d-b086-4517-bf54-2e25a1d1fb3b_terseLabel_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationExpectedCashFlowsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected cash outflows (inflows)</link:label>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationExpectedCashFlowsAbstract_label_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationExpectedCashFlowsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations with Credit Deterioration, Expected Cash Flows [Abstract]</link:label>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationExpectedCashFlowsAbstract_documentation_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationExpectedCashFlowsAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">-- None. No documentation exists for this element. --</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationExpectedCashFlowsAbstract" xlink:href="ago-20240630.xsd#ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationExpectedCashFlowsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationExpectedCashFlowsAbstract" xlink:to="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationExpectedCashFlowsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_EffectiveIncomeTaxRateReconciliationGlobalMinimumTaxRatePercent_05dfe729-8079-4bd2-82e5-ce26955a450c_terseLabel_en-US" xlink:label="lab_ago_EffectiveIncomeTaxRateReconciliationGlobalMinimumTaxRatePercent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Global minimum tax rate, percent</link:label>
    <link:label id="lab_ago_EffectiveIncomeTaxRateReconciliationGlobalMinimumTaxRatePercent_label_en-US" xlink:label="lab_ago_EffectiveIncomeTaxRateReconciliationGlobalMinimumTaxRatePercent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Effective Income Tax Rate Reconciliation, Global Minimum Tax Rate, Percent</link:label>
    <link:label id="lab_ago_EffectiveIncomeTaxRateReconciliationGlobalMinimumTaxRatePercent_documentation_en-US" xlink:label="lab_ago_EffectiveIncomeTaxRateReconciliationGlobalMinimumTaxRatePercent" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Effective Income Tax Rate Reconciliation, Global Minimum Tax Rate, Percent</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_EffectiveIncomeTaxRateReconciliationGlobalMinimumTaxRatePercent" xlink:href="ago-20240630.xsd#ago_EffectiveIncomeTaxRateReconciliationGlobalMinimumTaxRatePercent"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_EffectiveIncomeTaxRateReconciliationGlobalMinimumTaxRatePercent" xlink:to="lab_ago_EffectiveIncomeTaxRateReconciliationGlobalMinimumTaxRatePercent" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueByMeasurementFrequencyAxis_d3a54fa8-e308-4425-8fc0-8783d824cddf_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueByMeasurementFrequencyAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Measurement Frequency [Axis]</link:label>
    <link:label id="lab_us-gaap_FairValueByMeasurementFrequencyAxis_label_en-US" xlink:label="lab_us-gaap_FairValueByMeasurementFrequencyAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Measurement Frequency [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis" xlink:to="lab_us-gaap_FairValueByMeasurementFrequencyAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityCommonStockSharesOutstanding_89139bc3-59a0-490b-a3db-6509b46f715c_terseLabel_en-US" xlink:label="lab_dei_EntityCommonStockSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Common Stock, Shares Outstanding</link:label>
    <link:label id="lab_dei_EntityCommonStockSharesOutstanding_label_en-US" xlink:label="lab_dei_EntityCommonStockSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Common Stock, Shares Outstanding</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCommonStockSharesOutstanding" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityCommonStockSharesOutstanding"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityCommonStockSharesOutstanding" xlink:to="lab_dei_EntityCommonStockSharesOutstanding" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationBySurveillanceCategoryAxis_e94c17e4-bdfe-435c-a46c-8a045d88d1bf_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationBySurveillanceCategoryAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Credit Deterioration Surveillance Category [Axis]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationBySurveillanceCategoryAxis_label_en-US" xlink:label="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationBySurveillanceCategoryAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Credit Deterioration Surveillance Category [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationBySurveillanceCategoryAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationBySurveillanceCategoryAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationBySurveillanceCategoryAxis" xlink:to="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationBySurveillanceCategoryAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_InsiderTradingPoliciesProcLineItems_label_en-US" xlink:label="lab_ecd_InsiderTradingPoliciesProcLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insider Trading Policies and Procedures [Line Items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_InsiderTradingPoliciesProcLineItems" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_InsiderTradingPoliciesProcLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_InsiderTradingPoliciesProcLineItems" xlink:to="lab_ecd_InsiderTradingPoliciesProcLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_USStatesAndPoliticalSubdivisionsMember_83b9ee13-1b00-4bde-8d9d-bd590944cea9_terseLabel_en-US" xlink:label="lab_us-gaap_USStatesAndPoliticalSubdivisionsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Obligations of state and political subdivisions</link:label>
    <link:label id="lab_us-gaap_USStatesAndPoliticalSubdivisionsMember_label_en-US" xlink:label="lab_us-gaap_USStatesAndPoliticalSubdivisionsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">US States and Political Subdivisions Debt Securities [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_USStatesAndPoliticalSubdivisionsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember" xlink:to="lab_us-gaap_USStatesAndPoliticalSubdivisionsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueLiabilityRecurringBasisStillHeldUnrealizedGainLossOci_177d6cc4-f907-44c6-941f-7e8a164531e5_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueLiabilityRecurringBasisStillHeldUnrealizedGainLossOci" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Change in unrealized gains/(losses) included in OCI related to financial instruments</link:label>
    <link:label id="lab_us-gaap_FairValueLiabilityRecurringBasisStillHeldUnrealizedGainLossOci_label_en-US" xlink:label="lab_us-gaap_FairValueLiabilityRecurringBasisStillHeldUnrealizedGainLossOci" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Liability, Recurring Basis, Still Held, Unrealized Gain (Loss), OCI</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilityRecurringBasisStillHeldUnrealizedGainLossOci" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueLiabilityRecurringBasisStillHeldUnrealizedGainLossOci"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueLiabilityRecurringBasisStillHeldUnrealizedGainLossOci" xlink:to="lab_us-gaap_FairValueLiabilityRecurringBasisStillHeldUnrealizedGainLossOci" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_DeferredLoanRecoveryScenarioAxis_b65aec47-e60b-47cb-8311-537789393b3b_terseLabel_en-US" xlink:label="lab_ago_DeferredLoanRecoveryScenarioAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred Loan Recovery Scenario [Axis]</link:label>
    <link:label id="lab_ago_DeferredLoanRecoveryScenarioAxis_label_en-US" xlink:label="lab_ago_DeferredLoanRecoveryScenarioAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Loan Recovery Scenario [Axis]</link:label>
    <link:label id="lab_ago_DeferredLoanRecoveryScenarioAxis_documentation_en-US" xlink:label="lab_ago_DeferredLoanRecoveryScenarioAxis" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Deferred Loan Recovery Scenario</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_DeferredLoanRecoveryScenarioAxis" xlink:href="ago-20240630.xsd#ago_DeferredLoanRecoveryScenarioAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_DeferredLoanRecoveryScenarioAxis" xlink:to="lab_ago_DeferredLoanRecoveryScenarioAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_PaymentsInExchangeForRedemptionOfCommonStock_572bf149-887c-49fb-8159-71c079684f0e_terseLabel_en-US" xlink:label="lab_ago_PaymentsInExchangeForRedemptionOfCommonStock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds in exchange for redemption of common stock</link:label>
    <link:label id="lab_ago_PaymentsInExchangeForRedemptionOfCommonStock_label_en-US" xlink:label="lab_ago_PaymentsInExchangeForRedemptionOfCommonStock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments In Exchange For Redemption Of Common Stock</link:label>
    <link:label id="lab_ago_PaymentsInExchangeForRedemptionOfCommonStock_documentation_en-US" xlink:label="lab_ago_PaymentsInExchangeForRedemptionOfCommonStock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Payments In Exchange For Redemption Of Common Stock</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_PaymentsInExchangeForRedemptionOfCommonStock" xlink:href="ago-20240630.xsd#ago_PaymentsInExchangeForRedemptionOfCommonStock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_PaymentsInExchangeForRedemptionOfCommonStock" xlink:to="lab_ago_PaymentsInExchangeForRedemptionOfCommonStock" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_LossRecoveryAssumptionofChargedOffLoansEstimatedFutureRecoveriesPercent_92b4e4ea-3083-48e9-be8b-2a782b6a23da_terseLabel_en-US" xlink:label="lab_ago_LossRecoveryAssumptionofChargedOffLoansEstimatedFutureRecoveriesPercent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Projected future recoveries on previously charged-off loans</link:label>
    <link:label id="lab_ago_LossRecoveryAssumptionofChargedOffLoansEstimatedFutureRecoveriesPercent_label_en-US" xlink:label="lab_ago_LossRecoveryAssumptionofChargedOffLoansEstimatedFutureRecoveriesPercent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Recovery Assumption of Charged-Off Loans, Estimated Future Recoveries, Percent</link:label>
    <link:label id="lab_ago_LossRecoveryAssumptionofChargedOffLoansEstimatedFutureRecoveriesPercent_documentation_en-US" xlink:label="lab_ago_LossRecoveryAssumptionofChargedOffLoansEstimatedFutureRecoveriesPercent" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Loss Recovery Assumption of Charged-Off Loans, Estimated Future Recoveries, Percent</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_LossRecoveryAssumptionofChargedOffLoansEstimatedFutureRecoveriesPercent" xlink:href="ago-20240630.xsd#ago_LossRecoveryAssumptionofChargedOffLoansEstimatedFutureRecoveriesPercent"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_LossRecoveryAssumptionofChargedOffLoansEstimatedFutureRecoveriesPercent" xlink:to="lab_ago_LossRecoveryAssumptionofChargedOffLoansEstimatedFutureRecoveriesPercent" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease_cc0a4584-5f17-4496-9f4c-1e605ecedd0f_verboseLabel_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Change in the allowance for credit losses and intent to sell</link:label>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease_label_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss, Period Increase (Decrease)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease" xlink:to="lab_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_OtherAssetBackedSecuritiesMember_56a98209-6fd4-4612-884e-03c30b6f51fb_terseLabel_en-US" xlink:label="lab_ago_OtherAssetBackedSecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Others</link:label>
    <link:label id="lab_ago_OtherAssetBackedSecuritiesMember_label_en-US" xlink:label="lab_ago_OtherAssetBackedSecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Asset Backed Securities [Member]</link:label>
    <link:label id="lab_ago_OtherAssetBackedSecuritiesMember_documentation_en-US" xlink:label="lab_ago_OtherAssetBackedSecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Asset Backed Securities [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_OtherAssetBackedSecuritiesMember" xlink:href="ago-20240630.xsd#ago_OtherAssetBackedSecuritiesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_OtherAssetBackedSecuritiesMember" xlink:to="lab_ago_OtherAssetBackedSecuritiesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_AdjToCompAmt_terseLabel_en-US" xlink:label="lab_ecd_AdjToCompAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Adjustment to Compensation, Amount</link:label>
    <link:label id="lab_ecd_AdjToCompAmt_label_en-US" xlink:label="lab_ecd_AdjToCompAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustment to Compensation Amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AdjToCompAmt" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_AdjToCompAmt"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AdjToCompAmt" xlink:to="lab_ecd_AdjToCompAmt" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_PaymentsforProceedsfromShorttermInvestmentswithMaturitiesofLessThanThreeMonths_88766164-9520-48ad-bb67-cdb097bcdb1b_negatedLabel_en-US" xlink:label="lab_ago_PaymentsforProceedsfromShorttermInvestmentswithMaturitiesofLessThanThreeMonths" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Net sales (purchases) of short-term investments with original maturities of less than three months</link:label>
    <link:label id="lab_ago_PaymentsforProceedsfromShorttermInvestmentswithMaturitiesofLessThanThreeMonths_label_en-US" xlink:label="lab_ago_PaymentsforProceedsfromShorttermInvestmentswithMaturitiesofLessThanThreeMonths" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments for (Proceeds from) Short-term Investments, with Maturities of Less Than Three Months</link:label>
    <link:label id="lab_ago_PaymentsforProceedsfromShorttermInvestmentswithMaturitiesofLessThanThreeMonths_documentation_en-US" xlink:label="lab_ago_PaymentsforProceedsfromShorttermInvestmentswithMaturitiesofLessThanThreeMonths" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Payments for (Proceeds from) Short-term Investments, with Maturities of Less Than Three Months</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_PaymentsforProceedsfromShorttermInvestmentswithMaturitiesofLessThanThreeMonths" xlink:href="ago-20240630.xsd#ago_PaymentsforProceedsfromShorttermInvestmentswithMaturitiesofLessThanThreeMonths"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_PaymentsforProceedsfromShorttermInvestmentswithMaturitiesofLessThanThreeMonths" xlink:to="lab_ago_PaymentsforProceedsfromShorttermInvestmentswithMaturitiesofLessThanThreeMonths" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_OutstandingRecoveryCompAmt_terseLabel_en-US" xlink:label="lab_ecd_OutstandingRecoveryCompAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Compensation Amount</link:label>
    <link:label id="lab_ecd_OutstandingRecoveryCompAmt_label_en-US" xlink:label="lab_ecd_OutstandingRecoveryCompAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Outstanding Recovery Compensation Amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_OutstandingRecoveryCompAmt" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_OutstandingRecoveryCompAmt"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_OutstandingRecoveryCompAmt" xlink:to="lab_ecd_OutstandingRecoveryCompAmt" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationNetClaimLiabilityUndiscountedDirectAssumed_2a8690b5-ff63-4efb-95f1-a7dcbbdfcc7c_negatedTotalLabel_en-US" xlink:label="lab_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationNetClaimLiabilityUndiscountedDirectAssumed" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xml:lang="en-US">Gross</link:label>
    <link:label id="lab_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationNetClaimLiabilityUndiscountedDirectAssumed_label_en-US" xlink:label="lab_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationNetClaimLiabilityUndiscountedDirectAssumed" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations with Credit Deterioration, Net Claim Liability, Undiscounted, Direct Assumed</link:label>
    <link:label id="lab_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationNetClaimLiabilityUndiscountedDirectAssumed_documentation_en-US" xlink:label="lab_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationNetClaimLiabilityUndiscountedDirectAssumed" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations with Credit Deterioration, Net Claim Liability, Undiscounted, Direct Assumed</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationNetClaimLiabilityUndiscountedDirectAssumed" xlink:href="ago-20240630.xsd#ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationNetClaimLiabilityUndiscountedDirectAssumed"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationNetClaimLiabilityUndiscountedDirectAssumed" xlink:to="lab_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationNetClaimLiabilityUndiscountedDirectAssumed" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_DisposalGroupClassificationAxis_c208465d-d611-4988-8907-ea9bf1570b7d_terseLabel_en-US" xlink:label="lab_us-gaap_DisposalGroupClassificationAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disposal Group Classification [Axis]</link:label>
    <link:label id="lab_us-gaap_DisposalGroupClassificationAxis_label_en-US" xlink:label="lab_us-gaap_DisposalGroupClassificationAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disposal Group Classification [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis" xlink:to="lab_us-gaap_DisposalGroupClassificationAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_AggtChngPnsnValInSummryCompstnTblForAplblYrMember_terseLabel_en-US" xlink:label="lab_ecd_AggtChngPnsnValInSummryCompstnTblForAplblYrMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table</link:label>
    <link:label id="lab_ecd_AggtChngPnsnValInSummryCompstnTblForAplblYrMember_label_en-US" xlink:label="lab_ecd_AggtChngPnsnValInSummryCompstnTblForAplblYrMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AggtChngPnsnValInSummryCompstnTblForAplblYrMember" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_AggtChngPnsnValInSummryCompstnTblForAplblYrMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AggtChngPnsnValInSummryCompstnTblForAplblYrMember" xlink:to="lab_ecd_AggtChngPnsnValInSummryCompstnTblForAplblYrMember" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntitySmallBusiness_feb21be0-7730-4a62-9501-1ab986e6f523_terseLabel_en-US" xlink:label="lab_dei_EntitySmallBusiness" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Small Business</link:label>
    <link:label id="lab_dei_EntitySmallBusiness_label_en-US" xlink:label="lab_dei_EntitySmallBusiness" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Small Business</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntitySmallBusiness" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntitySmallBusiness"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntitySmallBusiness" xlink:to="lab_dei_EntitySmallBusiness" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_CoSelectedMeasureAmt_terseLabel_en-US" xlink:label="lab_ecd_CoSelectedMeasureAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Company Selected Measure Amount</link:label>
    <link:label id="lab_ecd_CoSelectedMeasureAmt_label_en-US" xlink:label="lab_ecd_CoSelectedMeasureAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Company Selected Measure Amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_CoSelectedMeasureAmt" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_CoSelectedMeasureAmt"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_CoSelectedMeasureAmt" xlink:to="lab_ecd_CoSelectedMeasureAmt" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_PremiumsReceivableAtCarryingValue_ea580687-0a56-4b38-9dbe-90c7e5691556_terseLabel_en-US" xlink:label="lab_us-gaap_PremiumsReceivableAtCarryingValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Premiums receivable, net of commissions payable</link:label>
    <link:label id="lab_us-gaap_PremiumsReceivableAtCarryingValue_label_en-US" xlink:label="lab_us-gaap_PremiumsReceivableAtCarryingValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Premiums Receivable, Net</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PremiumsReceivableAtCarryingValue" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PremiumsReceivableAtCarryingValue"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PremiumsReceivableAtCarryingValue" xlink:to="lab_us-gaap_PremiumsReceivableAtCarryingValue" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_TabularListTableTextBlock_terseLabel_en-US" xlink:label="lab_ecd_TabularListTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tabular List, Table</link:label>
    <link:label id="lab_ecd_TabularListTableTextBlock_label_en-US" xlink:label="lab_ecd_TabularListTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tabular List [Table Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_TabularListTableTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_TabularListTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_TabularListTableTextBlock" xlink:to="lab_ecd_TabularListTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueInputsLevel3Member_ad558c34-cafa-4642-b66d-666d25d01344_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel3Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Level&#160;3</link:label>
    <link:label id="lab_us-gaap_FairValueInputsLevel3Member_label_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel3Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Inputs, Level 3 [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueInputsLevel3Member" xlink:to="lab_us-gaap_FairValueInputsLevel3Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ExpectedLossToBePaidTextBlock_d507603e-667e-40b1-8bba-d20ac4e1270e_terseLabel_en-US" xlink:label="lab_ago_ExpectedLossToBePaidTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected Loss to be Paid (Recovered)</link:label>
    <link:label id="lab_ago_ExpectedLossToBePaidTextBlock_label_en-US" xlink:label="lab_ago_ExpectedLossToBePaidTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Expected Loss to be Paid [Text Block]</link:label>
    <link:label id="lab_ago_ExpectedLossToBePaidTextBlock_documentation_en-US" xlink:label="lab_ago_ExpectedLossToBePaidTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Expected Loss to be Paid [Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ExpectedLossToBePaidTextBlock" xlink:href="ago-20240630.xsd#ago_ExpectedLossToBePaidTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ExpectedLossToBePaidTextBlock" xlink:to="lab_ago_ExpectedLossToBePaidTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_AssuredGuarantyIncMember_06797eb0-5f9b-412b-8959-1fd5c34f7c34_terseLabel_en-US" xlink:label="lab_ago_AssuredGuarantyIncMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">AGC</link:label>
    <link:label id="lab_ago_AssuredGuarantyIncMember_label_en-US" xlink:label="lab_ago_AssuredGuarantyIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assured Guaranty Inc [Member]</link:label>
    <link:label id="lab_ago_AssuredGuarantyIncMember_documentation_en-US" xlink:label="lab_ago_AssuredGuarantyIncMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents principal insurance company subsidiary, Assured Guaranty Corp ("AGC").</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_AssuredGuarantyIncMember" xlink:href="ago-20240630.xsd#ago_AssuredGuarantyIncMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_AssuredGuarantyIncMember" xlink:to="lab_ago_AssuredGuarantyIncMember" xlink:type="arc" order="1"/>
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    <link:label id="lab_ago_OtherInvestedAssetsMember_label_en-US" xlink:label="lab_ago_OtherInvestedAssetsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Invested Assets [Member]</link:label>
    <link:label id="lab_ago_OtherInvestedAssetsMember_documentation_en-US" xlink:label="lab_ago_OtherInvestedAssetsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents other invested assets not separately disclosed.</link:label>
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    <link:label id="lab_us-gaap_FirstMortgageMember_4552d785-ee83-48e1-90e1-4b8c42a79ea4_terseLabel_en-US" xlink:label="lab_us-gaap_FirstMortgageMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">First Lien</link:label>
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    <link:label id="lab_ago_PublicFinanceEstimatedFutureRecoveriesOfClaimsPaid_412074d2-3837-466d-8c9f-6de3f1456c04_terseLabel_en-US" xlink:label="lab_ago_PublicFinanceEstimatedFutureRecoveriesOfClaimsPaid" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Credit for estimated future recoveries of claims paid</link:label>
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    <link:label id="lab_ago_PublicFinanceEstimatedFutureRecoveriesOfClaimsPaid_documentation_en-US" xlink:label="lab_ago_PublicFinanceEstimatedFutureRecoveriesOfClaimsPaid" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Public Finance Estimated Future Recoveries of Claims Paid</link:label>
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    <link:label id="lab_us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense_f0bbc2bb-0261-4dbf-b422-c8122d5cbe2a_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss and loss adjustment expense reserve</link:label>
    <link:label id="lab_us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense_label_en-US" xlink:label="lab_us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liability for Claims and Claims Adjustment Expense</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense"/>
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    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedInFirstFullFiscalYear_1fce5040-1e18-429b-a551-8a1b272eb6b1_terseLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedInFirstFullFiscalYear" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2025</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedInFirstFullFiscalYear_label_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedInFirstFullFiscalYear" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Future Expected, Net Loss to be Expensed in First Full Fiscal Year</link:label>
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    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsIncreaseDecreaseinExpectedLosstobePaidNet_89284960-95ac-4b41-a744-4edf7137addb_terseLabel_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsIncreaseDecreaseinExpectedLosstobePaidNet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Projected loss assumptions, increase (decrease) in expected loss to be paid, net</link:label>
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    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsIncreaseDecreaseinExpectedLosstobePaidNet_documentation_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsIncreaseDecreaseinExpectedLosstobePaidNet" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the change in expected loss on a pool of insured obligations that would result from an increase in the conditional default rate plateau period and loss severity recovery period.</link:label>
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    <link:label id="lab_ago_NumberOfFixedMaturityDebtSecuritiesClassifiedAsLevel3_d5bdc10a-fd42-4d47-adc2-07a545473633_terseLabel_en-US" xlink:label="lab_ago_NumberOfFixedMaturityDebtSecuritiesClassifiedAsLevel3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of fixed maturity debt securities classified as Level 3</link:label>
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    <link:label id="lab_ago_StockIssuedDuringPeriodSharesShareBasedCompensationAndOther_9f110ebd-f864-4fe3-9c5c-25df8281932a_terseLabel_en-US" xlink:label="lab_ago_StockIssuedDuringPeriodSharesShareBasedCompensationAndOther" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share-based compensation (in shares)</link:label>
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    <link:label id="lab_us-gaap_EmployeeStockOptionMember_terseLabel_en-US" xlink:label="lab_us-gaap_EmployeeStockOptionMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Employee Stock Option</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EmployeeStockOptionMember" xlink:to="lab_us-gaap_EmployeeStockOptionMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_SecuritiesManagedExternallyMember_83592de9-10c6-4292-87f3-3a592f2623cf_terseLabel_en-US" xlink:label="lab_ago_SecuritiesManagedExternallyMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Externally managed</link:label>
    <link:label id="lab_ago_SecuritiesManagedExternallyMember_label_en-US" xlink:label="lab_ago_SecuritiesManagedExternallyMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Securities, Managed Externally [Member]</link:label>
    <link:label id="lab_ago_SecuritiesManagedExternallyMember_documentation_en-US" xlink:label="lab_ago_SecuritiesManagedExternallyMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Securities, Managed Externally [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_SecuritiesManagedExternallyMember" xlink:href="ago-20240630.xsd#ago_SecuritiesManagedExternallyMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_SecuritiesManagedExternallyMember" xlink:to="lab_ago_SecuritiesManagedExternallyMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_c86e1055-933c-4fef-8c36-ad0d593d6357_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other</link:label>
    <link:label id="lab_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_label_en-US" xlink:label="lab_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from (Payments for) Other Financing Activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities" xlink:to="lab_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTax_1727ff76-d856-4bae-b2d6-ebcd59867798_totalLabel_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTax" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Comprehensive income (loss) attributable to Assured Guaranty Ltd.</link:label>
    <link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTax_label_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTax" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Comprehensive Income (Loss), Net of Tax, Attributable to Parent</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax" xlink:to="lab_us-gaap_ComprehensiveIncomeNetOfTax" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock_2197a7a5-b017-4ed4-a988-66a2f1dad0c0_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investments Classified by Contractual Maturity Date</link:label>
    <link:label id="lab_us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock_label_en-US" xlink:label="lab_us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investments Classified by Contractual Maturity Date [Table Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock" xlink:to="lab_us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseAndSalvageAndSubrogationRecoveriesTableTextBlock_fa420e8c-686f-4ee1-8da0-41c1575d01dd_terseLabel_en-US" xlink:label="lab_ago_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseAndSalvageAndSubrogationRecoveriesTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss and LAE Reserve and Salvage and Subrogation Recoverable Net of Reinsurance Insurance Contracts</link:label>
    <link:label id="lab_ago_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseAndSalvageAndSubrogationRecoveriesTableTextBlock_label_en-US" xlink:label="lab_ago_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseAndSalvageAndSubrogationRecoveriesTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liability for Unpaid Claims and Claims Adjustment Expense and Salvage and Subrogation Recoveries [Table Text Block]</link:label>
    <link:label id="lab_ago_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseAndSalvageAndSubrogationRecoveriesTableTextBlock_documentation_en-US" xlink:label="lab_ago_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseAndSalvageAndSubrogationRecoveriesTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tabular disclosure of the reserve for settling insured claims and expenses incurred in the claims settlement process, net of reinsurance, including salvage and subrogation recoverable amounts.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseAndSalvageAndSubrogationRecoveriesTableTextBlock" xlink:href="ago-20240630.xsd#ago_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseAndSalvageAndSubrogationRecoveriesTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseAndSalvageAndSubrogationRecoveriesTableTextBlock" xlink:to="lab_ago_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseAndSalvageAndSubrogationRecoveriesTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_AwardTypeAxis_terseLabel_en-US" xlink:label="lab_us-gaap_AwardTypeAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Award Type</link:label>
    <link:label id="lab_us-gaap_AwardTypeAxis_label_en-US" xlink:label="lab_us-gaap_AwardTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Award Type [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AwardTypeAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AwardTypeAxis" xlink:to="lab_us-gaap_AwardTypeAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_CorporateDebtSecuritiesMember_71e931ed-a752-4c0d-b61a-c71ee05782ec_terseLabel_en-US" xlink:label="lab_us-gaap_CorporateDebtSecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Corporate securities</link:label>
    <link:label id="lab_us-gaap_CorporateDebtSecuritiesMember_label_en-US" xlink:label="lab_us-gaap_CorporateDebtSecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Corporate Debt Securities [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CorporateDebtSecuritiesMember" xlink:to="lab_us-gaap_CorporateDebtSecuritiesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRateIntermediateRate_978c795b-1da6-4f41-abd6-81ec32acfdfe_terseLabel_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRateIntermediateRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intermediate conditional default rate (as a percent)</link:label>
    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRateIntermediateRate_label_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRateIntermediateRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Projected Loss Assumptions, Conditional Default Rate, Intermediate Rate</link:label>
    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRateIntermediateRate_documentation_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRateIntermediateRate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Projected Loss Assumptions, Conditional Default Rate, Intermediate Rate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRateIntermediateRate" xlink:href="ago-20240630.xsd#ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRateIntermediateRate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRateIntermediateRate" xlink:to="lab_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRateIntermediateRate" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_EarningsPerShareBasicAbstract_54580d3c-e6af-4fac-8301-ebbeb263e37f_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasicAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Basic Earnings Per Share (EPS):</link:label>
    <link:label id="lab_us-gaap_EarningsPerShareBasicAbstract_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasicAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings Per Share, Basic [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasicAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EarningsPerShareBasicAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract" xlink:to="lab_us-gaap_EarningsPerShareBasicAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountYearFour_ee4853e9-d2ed-47fb-9ab9-71b64a4dcb66_terseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountYearFour" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2028</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountYearFour_label_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountYearFour" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Principal Amount, Year Four</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountYearFour_documentation_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountYearFour" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Principal Amount, Year Four</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountYearFour" xlink:href="ago-20240630.xsd#ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountYearFour"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountYearFour" xlink:to="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountYearFour" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_LossContingencyCreditDerivativeTransactionsImproperlyCalculatedTerminationPaymentAsPerTheAllegationsOfThePlaintiffNumber_f01d298a-e245-4830-a040-0badfbcc6560_terseLabel_en-US" xlink:label="lab_ago_LossContingencyCreditDerivativeTransactionsImproperlyCalculatedTerminationPaymentAsPerTheAllegationsOfThePlaintiffNumber" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gain contingency, number of credit derivative transactions with improperly calculated payments</link:label>
    <link:label id="lab_ago_LossContingencyCreditDerivativeTransactionsImproperlyCalculatedTerminationPaymentAsPerTheAllegationsOfThePlaintiffNumber_label_en-US" xlink:label="lab_ago_LossContingencyCreditDerivativeTransactionsImproperlyCalculatedTerminationPaymentAsPerTheAllegationsOfThePlaintiffNumber" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Contingency, Credit Derivative Transactions Improperly Calculated Termination Payment As Per The Allegations Of The Plaintiff, Number</link:label>
    <link:label id="lab_ago_LossContingencyCreditDerivativeTransactionsImproperlyCalculatedTerminationPaymentAsPerTheAllegationsOfThePlaintiffNumber_documentation_en-US" xlink:label="lab_ago_LossContingencyCreditDerivativeTransactionsImproperlyCalculatedTerminationPaymentAsPerTheAllegationsOfThePlaintiffNumber" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the number of credit derivative transactions which the entity has improperly calculated termination payment as per the allegations of the plaintiff.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_LossContingencyCreditDerivativeTransactionsImproperlyCalculatedTerminationPaymentAsPerTheAllegationsOfThePlaintiffNumber" xlink:href="ago-20240630.xsd#ago_LossContingencyCreditDerivativeTransactionsImproperlyCalculatedTerminationPaymentAsPerTheAllegationsOfThePlaintiffNumber"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_LossContingencyCreditDerivativeTransactionsImproperlyCalculatedTerminationPaymentAsPerTheAllegationsOfThePlaintiffNumber" xlink:to="lab_ago_LossContingencyCreditDerivativeTransactionsImproperlyCalculatedTerminationPaymentAsPerTheAllegationsOfThePlaintiffNumber" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome_fa9e0a17-ef6c-427b-aa87-316c81847062_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other comprehensive income (loss)</link:label>
    <link:label id="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome_label_en-US" xlink:label="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome" xlink:to="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_OutstandingExposureDisclosureAbstract_22e75016-a266-4aa1-b0fe-2a32a73fc3e1_terseLabel_en-US" xlink:label="lab_ago_OutstandingExposureDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Outstanding Exposure Disclosure [Abstract]</link:label>
    <link:label id="lab_ago_OutstandingExposureDisclosureAbstract_label_en-US" xlink:label="lab_ago_OutstandingExposureDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Outstanding Exposure Disclosure [Abstract]</link:label>
    <link:label id="lab_ago_OutstandingExposureDisclosureAbstract_documentation_en-US" xlink:label="lab_ago_OutstandingExposureDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Outstanding Exposure Disclosure [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_OutstandingExposureDisclosureAbstract" xlink:href="ago-20240630.xsd#ago_OutstandingExposureDisclosureAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_OutstandingExposureDisclosureAbstract" xlink:to="lab_ago_OutstandingExposureDisclosureAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FutureNetPremiumsToBeEarnedAbstract_c29ccdb3-16e0-4326-8008-c6727825b7dd_terseLabel_en-US" xlink:label="lab_ago_FutureNetPremiumsToBeEarnedAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Future Net Premiums to be Earned [Abstract]</link:label>
    <link:label id="lab_ago_FutureNetPremiumsToBeEarnedAbstract_label_en-US" xlink:label="lab_ago_FutureNetPremiumsToBeEarnedAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Future Net Premiums to be Earned [Abstract]</link:label>
    <link:label id="lab_ago_FutureNetPremiumsToBeEarnedAbstract_documentation_en-US" xlink:label="lab_ago_FutureNetPremiumsToBeEarnedAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Future Net Premiums to be Earned</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FutureNetPremiumsToBeEarnedAbstract" xlink:href="ago-20240630.xsd#ago_FutureNetPremiumsToBeEarnedAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FutureNetPremiumsToBeEarnedAbstract" xlink:to="lab_ago_FutureNetPremiumsToBeEarnedAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_Liabilities_920c9584-a860-4b87-9821-13536ce3cb28_totalLabel_en-US" xlink:label="lab_us-gaap_Liabilities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total liabilities</link:label>
    <link:label id="lab_us-gaap_Liabilities_e623f98d-8fd3-4f51-8a76-da38b090ef02_terseLabel_en-US" xlink:label="lab_us-gaap_Liabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Liabilities</link:label>
    <link:label id="lab_us-gaap_Liabilities_label_en-US" xlink:label="lab_us-gaap_Liabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Liabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Liabilities" xlink:to="lab_us-gaap_Liabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_MinorityInterest_4e593c3e-5c38-47dc-8618-733d71f3ead9_terseLabel_en-US" xlink:label="lab_us-gaap_MinorityInterest" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Nonredeemable noncontrolling interests (Note 8)</link:label>
    <link:label id="lab_us-gaap_MinorityInterest_label_en-US" xlink:label="lab_us-gaap_MinorityInterest" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity, Attributable to Noncontrolling Interest</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterest" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MinorityInterest"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MinorityInterest" xlink:to="lab_us-gaap_MinorityInterest" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_PresentValueOfNetExpectedLossAndLossAdjustmentExpensesToBePaidRollForwardTableTextBlock_2e2a4a05-a950-4901-b119-c63d60a43a95_terseLabel_en-US" xlink:label="lab_ago_PresentValueOfNetExpectedLossAndLossAdjustmentExpensesToBePaidRollForwardTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net Expected Loss to be Paid After Net Expected Recoveries for Breaches of R&amp;W Roll Forward</link:label>
    <link:label id="lab_ago_PresentValueOfNetExpectedLossAndLossAdjustmentExpensesToBePaidRollForwardTableTextBlock_label_en-US" xlink:label="lab_ago_PresentValueOfNetExpectedLossAndLossAdjustmentExpensesToBePaidRollForwardTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Present Value of Net Expected Loss and Loss Adjustment Expenses to be Paid Roll Forward [Table Text Block]</link:label>
    <link:label id="lab_ago_PresentValueOfNetExpectedLossAndLossAdjustmentExpensesToBePaidRollForwardTableTextBlock_documentation_en-US" xlink:label="lab_ago_PresentValueOfNetExpectedLossAndLossAdjustmentExpensesToBePaidRollForwardTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tabular disclosure of a roll forward of the present value of net expected loss and LAE to be paid for financial guaranty contracts accounted for as insurance by sector. Expected loss to be paid is the Company's estimate of the present value of future claim payments, net of reinsurance and net of salvage and subrogation which includes the present value benefit of estimated recoveries for breaches of R&amp;W.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_PresentValueOfNetExpectedLossAndLossAdjustmentExpensesToBePaidRollForwardTableTextBlock" xlink:href="ago-20240630.xsd#ago_PresentValueOfNetExpectedLossAndLossAdjustmentExpensesToBePaidRollForwardTableTextBlock"/>
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    <link:label id="lab_us-gaap_CommonStockParOrStatedValuePerShare_8cc133d5-9423-4169-a3dc-0e4d73a688f4_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockParOrStatedValuePerShare" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common stock par value (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_CommonStockParOrStatedValuePerShare_label_en-US" xlink:label="lab_us-gaap_CommonStockParOrStatedValuePerShare" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Par or Stated Value Per Share</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockParOrStatedValuePerShare"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockParOrStatedValuePerShare" xlink:to="lab_us-gaap_CommonStockParOrStatedValuePerShare" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsPaidButUnexpensedLossesNet_8955a281-b578-4ece-b4ac-e0d0bfb79a18_terseLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsPaidButUnexpensedLossesNet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contra-paid, net</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsPaidButUnexpensedLossesNet_label_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsPaidButUnexpensedLossesNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts Paid But Unexpensed Losses Net</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsPaidButUnexpensedLossesNet_documentation_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsPaidButUnexpensedLossesNet" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of losses paid and not yet expensed on financial guaranty insurance contracts, net of ceded amounts.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuaranteeInsuranceContractsPaidButUnexpensedLossesNet" xlink:href="ago-20240630.xsd#ago_FinancialGuaranteeInsuranceContractsPaidButUnexpensedLossesNet"/>
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    <link:label id="lab_ecd_TrdArrExpirationDate_terseLabel_en-US" xlink:label="lab_ecd_TrdArrExpirationDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expiration Date</link:label>
    <link:label id="lab_ecd_TrdArrExpirationDate_label_en-US" xlink:label="lab_ecd_TrdArrExpirationDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Trading Arrangement Expiration Date</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_TrdArrExpirationDate" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_TrdArrExpirationDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_TrdArrExpirationDate" xlink:to="lab_ecd_TrdArrExpirationDate" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_9583b87e-71a8-47b8-8162-28a4fd0a4bb6_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash flows from investing activities:</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Investing Activities [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted_fd2d33b8-45fc-4f33-be58-49b4cb41ce33_terseLabel_en-US" xlink:label="lab_us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plus: Re-allocation of undistributed income (loss) available to nonvested shareholders of AGL and&#160;subsidiaries</link:label>
    <link:label id="lab_us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted_label_en-US" xlink:label="lab_us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Undistributed Earnings (Loss) Allocated to Participating Securities, Diluted</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted"/>
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    <link:label id="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_6a3349bc-1875-4296-9155-2db94fe32a4b_terseLabel_en-US" xlink:label="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reclassification out of Accumulated Other Comprehensive Income [Table]</link:label>
    <link:label id="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_label_en-US" xlink:label="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reclassification out of Accumulated Other Comprehensive Income [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable" xlink:to="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_TotalShareholderRtnAmt_terseLabel_en-US" xlink:label="lab_ecd_TotalShareholderRtnAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total Shareholder Return Amount</link:label>
    <link:label id="lab_ecd_TotalShareholderRtnAmt_label_en-US" xlink:label="lab_ecd_TotalShareholderRtnAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Total Shareholder Return Amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_TotalShareholderRtnAmt" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_TotalShareholderRtnAmt"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_TotalShareholderRtnAmt" xlink:to="lab_ecd_TotalShareholderRtnAmt" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_OtherShortTermInvestments_4cbd93a6-0849-4084-9a0e-d48258c0b951_terseLabel_en-US" xlink:label="lab_us-gaap_OtherShortTermInvestments" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Short-term investments, at fair value</link:label>
    <link:label id="lab_us-gaap_OtherShortTermInvestments_label_en-US" xlink:label="lab_us-gaap_OtherShortTermInvestments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Short-Term Investments</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherShortTermInvestments" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherShortTermInvestments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherShortTermInvestments" xlink:to="lab_us-gaap_OtherShortTermInvestments" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationNetClaimLiabilityNetofReinsuranceRecoverable_b2be79b5-f7f4-408f-b87f-a17ef4bbcd47_totalLabel_en-US" xlink:label="lab_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationNetClaimLiabilityNetofReinsuranceRecoverable" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net expected loss to be paid</link:label>
    <link:label id="lab_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationNetClaimLiabilityNetofReinsuranceRecoverable_label_en-US" xlink:label="lab_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationNetClaimLiabilityNetofReinsuranceRecoverable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations with Credit Deterioration, Net Claim Liability, Net of Reinsurance Recoverable</link:label>
    <link:label id="lab_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationNetClaimLiabilityNetofReinsuranceRecoverable_documentation_en-US" xlink:label="lab_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationNetClaimLiabilityNetofReinsuranceRecoverable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations with Credit Deterioration, Net Claim Liability, Net of Reinsurance Recoverable</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationNetClaimLiabilityNetofReinsuranceRecoverable" xlink:href="ago-20240630.xsd#ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationNetClaimLiabilityNetofReinsuranceRecoverable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationNetClaimLiabilityNetofReinsuranceRecoverable" xlink:to="lab_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationNetClaimLiabilityNetofReinsuranceRecoverable" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_EqtyAwrdsAdjFnTextBlock_terseLabel_en-US" xlink:label="lab_ecd_EqtyAwrdsAdjFnTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity Awards Adjustments, Footnote</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ecd_EqtyAwrdsAdjFnTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_EqtyAwrdsAdjFnTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_EqtyAwrdsAdjFnTextBlock" xlink:to="lab_ecd_EqtyAwrdsAdjFnTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_GainContingencyAllegationsPaymentForTerminationofCreditDerivativeTransactionsOwedbyPlaintifftoDefendantAsPerCalculationofDefendant_fa68a40b-4c9d-4133-818b-d023cab5234b_terseLabel_en-US" xlink:label="lab_ago_GainContingencyAllegationsPaymentForTerminationofCreditDerivativeTransactionsOwedbyPlaintifftoDefendantAsPerCalculationofDefendant" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Termination payments which LBIE owes to AG Financial Products as per calculation of AG Financial Products</link:label>
    <link:label id="lab_ago_GainContingencyAllegationsPaymentForTerminationofCreditDerivativeTransactionsOwedbyPlaintifftoDefendantAsPerCalculationofDefendant_label_en-US" xlink:label="lab_ago_GainContingencyAllegationsPaymentForTerminationofCreditDerivativeTransactionsOwedbyPlaintifftoDefendantAsPerCalculationofDefendant" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gain Contingency, Allegations, Payment For Termination of Credit Derivative Transactions Owed by Plaintiff to Defendant As Per Calculation of Defendant</link:label>
    <link:label id="lab_ago_GainContingencyAllegationsPaymentForTerminationofCreditDerivativeTransactionsOwedbyPlaintifftoDefendantAsPerCalculationofDefendant_documentation_en-US" xlink:label="lab_ago_GainContingencyAllegationsPaymentForTerminationofCreditDerivativeTransactionsOwedbyPlaintifftoDefendantAsPerCalculationofDefendant" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the amount of payment on the termination of credit derivatives transactions which the plaintiff owes to defendant as per the calculation of defendant.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_GainContingencyAllegationsPaymentForTerminationofCreditDerivativeTransactionsOwedbyPlaintifftoDefendantAsPerCalculationofDefendant" xlink:href="ago-20240630.xsd#ago_GainContingencyAllegationsPaymentForTerminationofCreditDerivativeTransactionsOwedbyPlaintifftoDefendantAsPerCalculationofDefendant"/>
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    <link:label id="lab_us-gaap_GuaranteeObligationsLineItems_d3cc984b-1879-471e-b19c-b616e444640b_terseLabel_en-US" xlink:label="lab_us-gaap_GuaranteeObligationsLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Guarantor Obligations [Line Items]</link:label>
    <link:label id="lab_us-gaap_GuaranteeObligationsLineItems_label_en-US" xlink:label="lab_us-gaap_GuaranteeObligationsLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Guarantor Obligations [Line Items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsLineItems" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GuaranteeObligationsLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems" xlink:to="lab_us-gaap_GuaranteeObligationsLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleRealizedGain_c7697902-77e8-4c0f-b2ff-4d112d4296e9_terseLabel_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleRealizedGain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gross realized gains on sales of available-for-sale securities (1)</link:label>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleRealizedGain_label_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleRealizedGain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-Sale, Realized Gain</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleRealizedGain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleRealizedGain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleRealizedGain" xlink:to="lab_us-gaap_DebtSecuritiesAvailableForSaleRealizedGain" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_OtherAssetsFairValueDisclosure_6e146605-c128-4fa0-8e01-b95156ade48f_verboseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsFairValueDisclosure" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Other assets, fair value disclosure</link:label>
    <link:label id="lab_us-gaap_OtherAssetsFairValueDisclosure_53bae3ba-a68f-4b31-8305-7a0ff34df3c4_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsFairValueDisclosure" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other assets</link:label>
    <link:label id="lab_us-gaap_OtherAssetsFairValueDisclosure_label_en-US" xlink:label="lab_us-gaap_OtherAssetsFairValueDisclosure" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Assets, Fair Value Disclosure</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsFairValueDisclosure" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherAssetsFairValueDisclosure"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsFairValueDisclosure" xlink:to="lab_us-gaap_OtherAssetsFairValueDisclosure" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearFifteenToEighteen_092924d0-a69e-405a-a785-122ac594eb29_terseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearFifteenToEighteen" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2039-2041</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearFifteenToEighteen_label_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearFifteenToEighteen" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Contractual Payments, Year Fifteen to Eighteen</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearFifteenToEighteen_documentation_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearFifteenToEighteen" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Contractual Payments, Year Fifteen to Eighteen</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearFifteenToEighteen" xlink:href="ago-20240630.xsd#ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearFifteenToEighteen"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearFifteenToEighteen" xlink:to="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearFifteenToEighteen" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuarantyContractsAccountedForAsCreditDerivativesNumberOfContracts_001a9e0e-c550-4e26-8fe0-be75906db98a_terseLabel_en-US" xlink:label="lab_ago_FinancialGuarantyContractsAccountedForAsCreditDerivativesNumberOfContracts" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of risks, credit derivative</link:label>
    <link:label id="lab_ago_FinancialGuarantyContractsAccountedForAsCreditDerivativesNumberOfContracts_label_en-US" xlink:label="lab_ago_FinancialGuarantyContractsAccountedForAsCreditDerivativesNumberOfContracts" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guaranty Contracts Accounted for as Credit Derivatives Number of Contracts</link:label>
    <link:label id="lab_ago_FinancialGuarantyContractsAccountedForAsCreditDerivativesNumberOfContracts_documentation_en-US" xlink:label="lab_ago_FinancialGuarantyContractsAccountedForAsCreditDerivativesNumberOfContracts" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the number of unique credits in the insured portfolio accounted for as credit derivative.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuarantyContractsAccountedForAsCreditDerivativesNumberOfContracts" xlink:href="ago-20240630.xsd#ago_FinancialGuarantyContractsAccountedForAsCreditDerivativesNumberOfContracts"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuarantyContractsAccountedForAsCreditDerivativesNumberOfContracts" xlink:to="lab_ago_FinancialGuarantyContractsAccountedForAsCreditDerivativesNumberOfContracts" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_OtherOperatingSegmentsAndIntersegmentEliminationsMember_e6b9ed38-7753-435e-ae90-06be794501ee_terseLabel_en-US" xlink:label="lab_ago_OtherOperatingSegmentsAndIntersegmentEliminationsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other</link:label>
    <link:label id="lab_ago_OtherOperatingSegmentsAndIntersegmentEliminationsMember_label_en-US" xlink:label="lab_ago_OtherOperatingSegmentsAndIntersegmentEliminationsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Operating Segments And Intersegment Eliminations [Member]</link:label>
    <link:label id="lab_ago_OtherOperatingSegmentsAndIntersegmentEliminationsMember_documentation_en-US" xlink:label="lab_ago_OtherOperatingSegmentsAndIntersegmentEliminationsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Operating Segments And Intersegment Eliminations</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_OtherOperatingSegmentsAndIntersegmentEliminationsMember" xlink:href="ago-20240630.xsd#ago_OtherOperatingSegmentsAndIntersegmentEliminationsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_OtherOperatingSegmentsAndIntersegmentEliminationsMember" xlink:to="lab_ago_OtherOperatingSegmentsAndIntersegmentEliminationsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InsuranceSegmentMember_b806c748-b842-4dac-bddb-42646ff9e81a_terseLabel_en-US" xlink:label="lab_ago_InsuranceSegmentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Insurance</link:label>
    <link:label id="lab_ago_InsuranceSegmentMember_label_en-US" xlink:label="lab_ago_InsuranceSegmentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insurance Segment [Member]</link:label>
    <link:label id="lab_ago_InsuranceSegmentMember_documentation_en-US" xlink:label="lab_ago_InsuranceSegmentMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Insurance Segment [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuranceSegmentMember" xlink:href="ago-20240630.xsd#ago_InsuranceSegmentMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InsuranceSegmentMember" xlink:to="lab_ago_InsuranceSegmentMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_NamedExecutiveOfficersFnTextBlock_terseLabel_en-US" xlink:label="lab_ecd_NamedExecutiveOfficersFnTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Named Executive Officers, Footnote</link:label>
    <link:label id="lab_ecd_NamedExecutiveOfficersFnTextBlock_label_en-US" xlink:label="lab_ecd_NamedExecutiveOfficersFnTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Named Executive Officers, Footnote [Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_NamedExecutiveOfficersFnTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_NamedExecutiveOfficersFnTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_NamedExecutiveOfficersFnTextBlock" xlink:to="lab_ecd_NamedExecutiveOfficersFnTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_srt_ConsolidatedEntityExcludingVariableInterestEntitiesVIEMember_65c27d2a-d197-44d0-b26e-92e060a163c7_terseLabel_en-US" xlink:label="lab_srt_ConsolidatedEntityExcludingVariableInterestEntitiesVIEMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Consolidated Entity Excluding Variable Interest Entities (VIE)</link:label>
    <link:label id="lab_srt_ConsolidatedEntityExcludingVariableInterestEntitiesVIEMember_label_en-US" xlink:label="lab_srt_ConsolidatedEntityExcludingVariableInterestEntitiesVIEMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Consolidated Entity, Excluding Consolidated VIE [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntityExcludingVariableInterestEntitiesVIEMember" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ConsolidatedEntityExcludingVariableInterestEntitiesVIEMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ConsolidatedEntityExcludingVariableInterestEntitiesVIEMember" xlink:to="lab_srt_ConsolidatedEntityExcludingVariableInterestEntitiesVIEMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_OtherAssets_0663b8bc-9068-44c5-8761-77efd07cc8de_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other assets (includes $125 and $123, at fair value)</link:label>
    <link:label id="lab_us-gaap_OtherAssets_8c009f09-0835-4d79-90d8-65881df28cba_verboseLabel_en-US" xlink:label="lab_us-gaap_OtherAssets" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Other Assets</link:label>
    <link:label id="lab_us-gaap_OtherAssets_label_en-US" xlink:label="lab_us-gaap_OtherAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssets" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssets" xlink:to="lab_us-gaap_OtherAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_InternalCreditAssessmentDomain_0bff96cd-b6e5-4fd2-b27f-0bba4256ee30_terseLabel_en-US" xlink:label="lab_us-gaap_InternalCreditAssessmentDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Internal Credit Assessment [Domain]</link:label>
    <link:label id="lab_us-gaap_InternalCreditAssessmentDomain_label_en-US" xlink:label="lab_us-gaap_InternalCreditAssessmentDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Internal Credit Assessment [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InternalCreditAssessmentDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InternalCreditAssessmentDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InternalCreditAssessmentDomain" xlink:to="lab_us-gaap_InternalCreditAssessmentDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_CollateralizedLoanObligationsMember_852057cc-53c3-416e-b9b6-4a30e4ab8fc0_terseLabel_en-US" xlink:label="lab_us-gaap_CollateralizedLoanObligationsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">CLOs</link:label>
    <link:label id="lab_us-gaap_CollateralizedLoanObligationsMember_label_en-US" xlink:label="lab_us-gaap_CollateralizedLoanObligationsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Collateralized Loan Obligations [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CollateralizedLoanObligationsMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CollateralizedLoanObligationsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CollateralizedLoanObligationsMember" xlink:to="lab_us-gaap_CollateralizedLoanObligationsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_ff29603e-ea44-44bc-9a08-a3ebf85b5ef0_terseLabel_en-US" xlink:label="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Basis of Presentation</link:label>
    <link:label id="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_label_en-US" xlink:label="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Basis of Accounting, Policy [Policy Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BasisOfAccountingPolicyPolicyTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xlink:to="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_0da4cea4-2fcb-4289-bbfb-7f02e7f0da0a_totalLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Diluted shares (in shares)</link:label>
    <link:label id="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_label_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Weighted Average Number of Shares Outstanding, Diluted</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:to="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_MeasurementInputDefaultRateMember_a314f369-08da-44df-91d7-b0658b06b439_terseLabel_en-US" xlink:label="lab_us-gaap_MeasurementInputDefaultRateMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">CDR</link:label>
    <link:label id="lab_us-gaap_MeasurementInputDefaultRateMember_label_en-US" xlink:label="lab_us-gaap_MeasurementInputDefaultRateMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Measurement Input, Default Rate [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputDefaultRateMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MeasurementInputDefaultRateMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MeasurementInputDefaultRateMember" xlink:to="lab_us-gaap_MeasurementInputDefaultRateMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinSecondFullFiscalYear_d59cba76-6d87-4622-b299-5a758355e736_terseLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinSecondFullFiscalYear" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2026</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinSecondFullFiscalYear_label_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinSecondFullFiscalYear" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Future Expected, Net Loss to be Expensed in Second Full Fiscal Year</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinSecondFullFiscalYear_documentation_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinSecondFullFiscalYear" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">For financial guaranty insurance contracts, the amount of net loss expected to be expensed within the second full fiscal year following the date of the latest balance sheet presented in the financial statements.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinSecondFullFiscalYear" xlink:href="ago-20240630.xsd#ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinSecondFullFiscalYear"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinSecondFullFiscalYear" xlink:to="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinSecondFullFiscalYear" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_NonrecourseMember_f50f2528-451e-4af4-92de-ffa17c259aa6_terseLabel_en-US" xlink:label="lab_us-gaap_NonrecourseMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Nonrecourse</link:label>
    <link:label id="lab_us-gaap_NonrecourseMember_label_en-US" xlink:label="lab_us-gaap_NonrecourseMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Nonrecourse [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonrecourseMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NonrecourseMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NonrecourseMember" xlink:to="lab_us-gaap_NonrecourseMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_MnpiDiscTimedForCompValFlag_terseLabel_en-US" xlink:label="lab_ecd_MnpiDiscTimedForCompValFlag" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">MNPI Disclosure Timed for Compensation Value</link:label>
    <link:label id="lab_ecd_MnpiDiscTimedForCompValFlag_label_en-US" xlink:label="lab_ecd_MnpiDiscTimedForCompValFlag" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">MNPI Disclosure Timed for Compensation Value [Flag]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_MnpiDiscTimedForCompValFlag" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_MnpiDiscTimedForCompValFlag"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_MnpiDiscTimedForCompValFlag" xlink:to="lab_ecd_MnpiDiscTimedForCompValFlag" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_159fb2ec-6b6e-4d4e-a8b5-3f8099082d94_terseLabel_en-US" xlink:label="lab_us-gaap_AOCIAttributableToParentNetOfTaxRollForward" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Changes in Accumulated Other Comprehensive Income [Roll Forward]</link:label>
    <link:label id="lab_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_label_en-US" xlink:label="lab_us-gaap_AOCIAttributableToParentNetOfTaxRollForward" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">AOCI Attributable to Parent, Net of Tax [Roll Forward]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AOCIAttributableToParentNetOfTaxRollForward"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward" xlink:to="lab_us-gaap_AOCIAttributableToParentNetOfTaxRollForward" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_InsuredFinancialObligationsWithCreditDeteriorationRemainingWeightedAverageContractPeriod_3e20e08c-958e-437c-a4d0-69a6a3dd09b2_terseLabel_en-US" xlink:label="lab_us-gaap_InsuredFinancialObligationsWithCreditDeteriorationRemainingWeightedAverageContractPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gross (in years)</link:label>
    <link:label id="lab_us-gaap_InsuredFinancialObligationsWithCreditDeteriorationRemainingWeightedAverageContractPeriod_label_en-US" xlink:label="lab_us-gaap_InsuredFinancialObligationsWithCreditDeteriorationRemainingWeightedAverageContractPeriod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations with Credit Deterioration, Remaining Weighted Average Contract Period</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InsuredFinancialObligationsWithCreditDeteriorationRemainingWeightedAverageContractPeriod" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InsuredFinancialObligationsWithCreditDeteriorationRemainingWeightedAverageContractPeriod"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InsuredFinancialObligationsWithCreditDeteriorationRemainingWeightedAverageContractPeriod" xlink:to="lab_us-gaap_InsuredFinancialObligationsWithCreditDeteriorationRemainingWeightedAverageContractPeriod" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_VariableInterestEntityNumberOfRemainingEntities_e1418426-95f9-4cd1-af0f-cfd8097aad99_terseLabel_en-US" xlink:label="lab_ago_VariableInterestEntityNumberOfRemainingEntities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of remaining CIVs</link:label>
    <link:label id="lab_ago_VariableInterestEntityNumberOfRemainingEntities_label_en-US" xlink:label="lab_ago_VariableInterestEntityNumberOfRemainingEntities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable Interest Entity, Number of Remaining Entities</link:label>
    <link:label id="lab_ago_VariableInterestEntityNumberOfRemainingEntities_documentation_en-US" xlink:label="lab_ago_VariableInterestEntityNumberOfRemainingEntities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Variable Interest Entity, Number of Remaining Entities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_VariableInterestEntityNumberOfRemainingEntities" xlink:href="ago-20240630.xsd#ago_VariableInterestEntityNumberOfRemainingEntities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_VariableInterestEntityNumberOfRemainingEntities" xlink:to="lab_ago_VariableInterestEntityNumberOfRemainingEntities" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InsuredFinancialObligationsLossMitigationSecurities_e67744fb-3294-488e-a53b-70e7a08ae3ca_terseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsLossMitigationSecurities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss Mitigation Securities</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsLossMitigationSecurities_label_en-US" xlink:label="lab_ago_InsuredFinancialObligationsLossMitigationSecurities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Loss Mitigation Securities</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsLossMitigationSecurities_documentation_en-US" xlink:label="lab_ago_InsuredFinancialObligationsLossMitigationSecurities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the outstanding principal amounts of the securities insured and purchased by the Company, and for which it has expected losses to be paid, in order to mitigate the economic effect of insured losses ("loss mitigation securities").</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuredFinancialObligationsLossMitigationSecurities" xlink:href="ago-20240630.xsd#ago_InsuredFinancialObligationsLossMitigationSecurities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InsuredFinancialObligationsLossMitigationSecurities" xlink:to="lab_ago_InsuredFinancialObligationsLossMitigationSecurities" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_StockholdersEquity_ee6236e4-c6aa-4738-bcb2-3840cc978878_totalLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquity" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total shareholders&#8217; equity attributable to Assured Guaranty Ltd.</link:label>
    <link:label id="lab_us-gaap_StockholdersEquity_a4a1ecdb-d1fc-46b7-b92d-690e7c30cc04_periodStartLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquity" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Beginning balance</link:label>
    <link:label id="lab_us-gaap_StockholdersEquity_112cc2cb-da5e-4bed-99fe-868d671b6ac8_periodEndLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquity" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending balance</link:label>
    <link:label id="lab_us-gaap_StockholdersEquity_label_en-US" xlink:label="lab_us-gaap_StockholdersEquity" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity, Attributable to Parent</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquity"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquity" xlink:to="lab_us-gaap_StockholdersEquity" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRatePlateauRatePerformingorProjectedtoReperformProjectionPeriod_28d7641a-d4d4-439a-ac71-0d2350917f99_terseLabel_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRatePlateauRatePerformingorProjectedtoReperformProjectionPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Performing or projected to reperform, projection period</link:label>
    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRatePlateauRatePerformingorProjectedtoReperformProjectionPeriod_label_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRatePlateauRatePerformingorProjectedtoReperformProjectionPeriod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Projected Loss Assumptions, Conditional Default Rate, Plateau Rate, Performing or Projected to Reperform, Projection Period</link:label>
    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRatePlateauRatePerformingorProjectedtoReperformProjectionPeriod_documentation_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRatePlateauRatePerformingorProjectedtoReperformProjectionPeriod" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Projected Loss Assumptions, Conditional Default Rate, Plateau Rate, Performing or Projected to Reperform, Projection Period</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRatePlateauRatePerformingorProjectedtoReperformProjectionPeriod" xlink:href="ago-20240630.xsd#ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRatePlateauRatePerformingorProjectedtoReperformProjectionPeriod"/>
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    <link:label id="lab_ago_PresentValueOfNetExpectedLossAndLossAdjustmentExpensesToBePaidRollForward_d3e9680f-f648-4227-a6f8-5cf3b9da7e4c_terseLabel_en-US" xlink:label="lab_ago_PresentValueOfNetExpectedLossAndLossAdjustmentExpensesToBePaidRollForward" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Present Value of Net Expected Loss and Loss Adjustment Expenses to be Paid [Roll Forward]</link:label>
    <link:label id="lab_ago_PresentValueOfNetExpectedLossAndLossAdjustmentExpensesToBePaidRollForward_label_en-US" xlink:label="lab_ago_PresentValueOfNetExpectedLossAndLossAdjustmentExpensesToBePaidRollForward" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Present Value of Net Expected Loss and Loss Adjustment Expenses to be Paid [Roll Forward]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_PresentValueOfNetExpectedLossAndLossAdjustmentExpensesToBePaidRollForward" xlink:href="ago-20240630.xsd#ago_PresentValueOfNetExpectedLossAndLossAdjustmentExpensesToBePaidRollForward"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_PresentValueOfNetExpectedLossAndLossAdjustmentExpensesToBePaidRollForward" xlink:to="lab_ago_PresentValueOfNetExpectedLossAndLossAdjustmentExpensesToBePaidRollForward" xlink:type="arc" order="1"/>
    <link:label id="lab_srt_LitigationCaseAxis_d3e092a6-6c85-4fe4-9c3f-7a082e3b6437_terseLabel_en-US" xlink:label="lab_srt_LitigationCaseAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Litigation Case [Axis]</link:label>
    <link:label id="lab_srt_LitigationCaseAxis_label_en-US" xlink:label="lab_srt_LitigationCaseAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Litigation Case [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseAxis" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_LitigationCaseAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_LitigationCaseAxis" xlink:to="lab_srt_LitigationCaseAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ConcentrationRiskTypeDomain_d906e91f-84c7-4bed-973d-cc3304ad01ed_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskTypeDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Concentration Risk Type [Domain]</link:label>
    <link:label id="lab_us-gaap_ConcentrationRiskTypeDomain_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskTypeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Concentration Risk Type [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain" xlink:to="lab_us-gaap_ConcentrationRiskTypeDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis_3a8f333a-668f-4299-8ee7-20fff1aa3276_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Category of Item Purchased [Axis]</link:label>
    <link:label id="lab_us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis_label_en-US" xlink:label="lab_us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Category of Item Purchased [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis" xlink:to="lab_us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ProceedsFromPaymentsForTradingSecurities_22005943-702c-44ed-8911-d25a77ad4a9a_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromPaymentsForTradingSecurities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sales of fixed-maturity securities, trading</link:label>
    <link:label id="lab_us-gaap_ProceedsFromPaymentsForTradingSecurities_label_en-US" xlink:label="lab_us-gaap_ProceedsFromPaymentsForTradingSecurities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from (Payments for) Trading Securities, Short-Term</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromPaymentsForTradingSecurities" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromPaymentsForTradingSecurities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromPaymentsForTradingSecurities" xlink:to="lab_us-gaap_ProceedsFromPaymentsForTradingSecurities" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionGreaterThan10PercentOfBookValueTwelveMonthsOrLongerNumber_253a351f-47c2-4c3e-9d7d-84d9db6efa80_terseLabel_en-US" xlink:label="lab_ago_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionGreaterThan10PercentOfBookValueTwelveMonthsOrLongerNumber" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of securities with unrealized losses greater than 10% of book value for 12 months or more</link:label>
    <link:label id="lab_ago_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionGreaterThan10PercentOfBookValueTwelveMonthsOrLongerNumber_label_en-US" xlink:label="lab_ago_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionGreaterThan10PercentOfBookValueTwelveMonthsOrLongerNumber" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Continuous Unrealized Loss Position, Greater than 10 Percent of Book Value, Twelve Months or Longer, Number</link:label>
    <link:label id="lab_ago_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionGreaterThan10PercentOfBookValueTwelveMonthsOrLongerNumber_documentation_en-US" xlink:label="lab_ago_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionGreaterThan10PercentOfBookValueTwelveMonthsOrLongerNumber" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the number of securities which had unrealized losses greater than 10% of book value for 12 months or more.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionGreaterThan10PercentOfBookValueTwelveMonthsOrLongerNumber" xlink:href="ago-20240630.xsd#ago_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionGreaterThan10PercentOfBookValueTwelveMonthsOrLongerNumber"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionGreaterThan10PercentOfBookValueTwelveMonthsOrLongerNumber" xlink:to="lab_ago_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionGreaterThan10PercentOfBookValueTwelveMonthsOrLongerNumber" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_DebtSecuritiesTradingUnrealizedGainLoss_582fb76b-ec94-43aa-b53a-1c30b54da813_terseLabel_en-US" xlink:label="lab_us-gaap_DebtSecuritiesTradingUnrealizedGainLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair value gains (losses) on trading securities</link:label>
    <link:label id="lab_us-gaap_DebtSecuritiesTradingUnrealizedGainLoss_label_en-US" xlink:label="lab_us-gaap_DebtSecuritiesTradingUnrealizedGainLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Trading, Unrealized Gain (Loss)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesTradingUnrealizedGainLoss" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesTradingUnrealizedGainLoss"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtSecuritiesTradingUnrealizedGainLoss" xlink:to="lab_us-gaap_DebtSecuritiesTradingUnrealizedGainLoss" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_PremiumsReceivableMember_dd5a968c-2b90-45b4-bd30-02cf3c47b39a_terseLabel_en-US" xlink:label="lab_us-gaap_PremiumsReceivableMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Premiums Receivable</link:label>
    <link:label id="lab_us-gaap_PremiumsReceivableMember_label_en-US" xlink:label="lab_us-gaap_PremiumsReceivableMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Premiums Receivable [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PremiumsReceivableMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PremiumsReceivableMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PremiumsReceivableMember" xlink:to="lab_us-gaap_PremiumsReceivableMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_CreditRiskContract5YearSpreadMember_c3abb5bb-0634-4582-8731-1144fe6eab96_terseLabel_en-US" xlink:label="lab_ago_CreditRiskContract5YearSpreadMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Five-year CDS spread</link:label>
    <link:label id="lab_ago_CreditRiskContract5YearSpreadMember_label_en-US" xlink:label="lab_ago_CreditRiskContract5YearSpreadMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Credit Risk Contract, 5 Year Spread [Member]</link:label>
    <link:label id="lab_ago_CreditRiskContract5YearSpreadMember_documentation_en-US" xlink:label="lab_ago_CreditRiskContract5YearSpreadMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Credit Risk Contract, 5 Year Spread [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_CreditRiskContract5YearSpreadMember" xlink:href="ago-20240630.xsd#ago_CreditRiskContract5YearSpreadMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_CreditRiskContract5YearSpreadMember" xlink:to="lab_ago_CreditRiskContract5YearSpreadMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_AssetManagementSegmentMember_4cbe3c9d-10d6-427e-a45e-67b38f740ffe_terseLabel_en-US" xlink:label="lab_ago_AssetManagementSegmentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Asset Management</link:label>
    <link:label id="lab_ago_AssetManagementSegmentMember_label_en-US" xlink:label="lab_ago_AssetManagementSegmentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Asset Management Segment [Member]</link:label>
    <link:label id="lab_ago_AssetManagementSegmentMember_documentation_en-US" xlink:label="lab_ago_AssetManagementSegmentMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Asset Management Segment [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_AssetManagementSegmentMember" xlink:href="ago-20240630.xsd#ago_AssetManagementSegmentMember"/>
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    <link:label id="lab_ago_OtherPuertoRicoExposuresMember_6e9a59a6-f09b-4440-aa6a-bbb08f658ba2_terseLabel_en-US" xlink:label="lab_ago_OtherPuertoRicoExposuresMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Puerto Rico Exposure</link:label>
    <link:label id="lab_ago_OtherPuertoRicoExposuresMember_label_en-US" xlink:label="lab_ago_OtherPuertoRicoExposuresMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Puerto Rico Exposures [Member]</link:label>
    <link:label id="lab_ago_OtherPuertoRicoExposuresMember_documentation_en-US" xlink:label="lab_ago_OtherPuertoRicoExposuresMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Puerto Rico Exposures</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_OtherPuertoRicoExposuresMember" xlink:href="ago-20240630.xsd#ago_OtherPuertoRicoExposuresMember"/>
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    <link:label id="lab_ago_ExpectedLossesAbstract_7456150d-15ce-4580-912a-d44bdf05edf2_terseLabel_en-US" xlink:label="lab_ago_ExpectedLossesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected Losses [Abstract]</link:label>
    <link:label id="lab_ago_ExpectedLossesAbstract_label_en-US" xlink:label="lab_ago_ExpectedLossesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Expected Losses [Abstract]</link:label>
    <link:label id="lab_ago_ExpectedLossesAbstract_documentation_en-US" xlink:label="lab_ago_ExpectedLossesAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Expected Losses [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ExpectedLossesAbstract" xlink:href="ago-20240630.xsd#ago_ExpectedLossesAbstract"/>
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    <link:label id="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlock_c74cf3db-c42b-46e0-91c0-c30badb78814_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value Hierarchy of Financial Instruments Carried at Fair Value</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlock"/>
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    <link:label id="lab_dei_DocumentFiscalPeriodFocus_bbc1c07b-0607-4ad2-90f8-9d15db76229a_terseLabel_en-US" xlink:label="lab_dei_DocumentFiscalPeriodFocus" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Fiscal Period Focus</link:label>
    <link:label id="lab_dei_DocumentFiscalPeriodFocus_label_en-US" xlink:label="lab_dei_DocumentFiscalPeriodFocus" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Fiscal Period Focus</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalPeriodFocus" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_DocumentFiscalPeriodFocus"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentFiscalPeriodFocus" xlink:to="lab_dei_DocumentFiscalPeriodFocus" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_ExchangeDomain_cf97eef1-ae6b-44a3-ad05-a45acf03cee7_terseLabel_en-US" xlink:label="lab_dei_ExchangeDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Exchange [Domain]</link:label>
    <link:label id="lab_dei_ExchangeDomain_label_en-US" xlink:label="lab_dei_ExchangeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Exchange [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_ExchangeDomain" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_ExchangeDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_ExchangeDomain" xlink:to="lab_dei_ExchangeDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_AllExecutiveCategoriesMember_terseLabel_en-US" xlink:label="lab_ecd_AllExecutiveCategoriesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">All Executive Categories</link:label>
    <link:label id="lab_ecd_AllExecutiveCategoriesMember_label_en-US" xlink:label="lab_ecd_AllExecutiveCategoriesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">All Executive Categories [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AllExecutiveCategoriesMember" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_AllExecutiveCategoriesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AllExecutiveCategoriesMember" xlink:to="lab_ecd_AllExecutiveCategoriesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_c2e4e03b-2e5e-4e02-826f-48cfc652f4fd_terseLabel_en-US" xlink:label="lab_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restricted stock awards (in shares)</link:label>
    <link:label id="lab_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_label_en-US" xlink:label="lab_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements"/>
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    <link:label id="lab_ago_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAbstract_2b76eaae-c7ad-4739-8a0e-440fecd7bf6c_terseLabel_en-US" xlink:label="lab_ago_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Less&#160;than&#160;12&#160;months</link:label>
    <link:label id="lab_ago_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAbstract_label_en-US" xlink:label="lab_ago_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAbstract" xlink:href="ago-20240630.xsd#ago_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAbstract" xlink:to="lab_ago_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_EquitySecuritiesMember_b66fe1f5-8207-4476-837e-1d885914b16e_terseLabel_en-US" xlink:label="lab_us-gaap_EquitySecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity Securities</link:label>
    <link:label id="lab_us-gaap_EquitySecuritiesMember_be74536b-8d34-43d8-bd30-de4b6dff5725_verboseLabel_en-US" xlink:label="lab_us-gaap_EquitySecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Equity securities</link:label>
    <link:label id="lab_us-gaap_EquitySecuritiesMember_label_en-US" xlink:label="lab_us-gaap_EquitySecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity Securities [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EquitySecuritiesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EquitySecuritiesMember" xlink:to="lab_us-gaap_EquitySecuritiesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuarantyInsuranceContractsNetValue_54373123-fc63-4070-b03e-6c808bc76122_negatedTerseLabel_en-US" xlink:label="lab_ago_FinancialGuarantyInsuranceContractsNetValue" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Financial guaranty insurance contracts</link:label>
    <link:label id="lab_ago_FinancialGuarantyInsuranceContractsNetValue_label_en-US" xlink:label="lab_ago_FinancialGuarantyInsuranceContractsNetValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guaranty Insurance Contracts Net Value</link:label>
    <link:label id="lab_ago_FinancialGuarantyInsuranceContractsNetValue_documentation_en-US" xlink:label="lab_ago_FinancialGuarantyInsuranceContractsNetValue" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This element represents the net financial guaranty contract position for the entity, consisting of premiums receivable, ceded unearned premium reserve, reinsurance recoverable on unpaid losses, salvage and subrogation recoverable, unearned premium reserve, loss and loss adjustment expense reserve, and reinsurance balances payable, net.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuarantyInsuranceContractsNetValue" xlink:href="ago-20240630.xsd#ago_FinancialGuarantyInsuranceContractsNetValue"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuarantyInsuranceContractsNetValue" xlink:to="lab_ago_FinancialGuarantyInsuranceContractsNetValue" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_ChangedPeerGroupFnTextBlock_terseLabel_en-US" xlink:label="lab_ecd_ChangedPeerGroupFnTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Changed Peer Group, Footnote</link:label>
    <link:label id="lab_ecd_ChangedPeerGroupFnTextBlock_label_en-US" xlink:label="lab_ecd_ChangedPeerGroupFnTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Changed Peer Group, Footnote [Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_ChangedPeerGroupFnTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_ChangedPeerGroupFnTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_ChangedPeerGroupFnTextBlock" xlink:to="lab_ecd_ChangedPeerGroupFnTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_AssetsAbstract_e9bcbb7d-156c-45f1-8f8d-1f32bee5e832_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Assets</link:label>
    <link:label id="lab_us-gaap_AssetsAbstract_label_en-US" xlink:label="lab_us-gaap_AssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsAbstract" xlink:to="lab_us-gaap_AssetsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ProceedsfromPaydownsonFinancialGuarantyVariableInterestEntitiesAssets_a87b9628-bf76-4015-a6e0-468cc158855b_terseLabel_en-US" xlink:label="lab_ago_ProceedsfromPaydownsonFinancialGuarantyVariableInterestEntitiesAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Paydowns of financial guaranty variable interest entities&#8217; assets</link:label>
    <link:label id="lab_ago_ProceedsfromPaydownsonFinancialGuarantyVariableInterestEntitiesAssets_label_en-US" xlink:label="lab_ago_ProceedsfromPaydownsonFinancialGuarantyVariableInterestEntitiesAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Paydowns on Financial Guaranty Variable Interest Entities Assets</link:label>
    <link:label id="lab_ago_ProceedsfromPaydownsonFinancialGuarantyVariableInterestEntitiesAssets_documentation_en-US" xlink:label="lab_ago_ProceedsfromPaydownsonFinancialGuarantyVariableInterestEntitiesAssets" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Proceeds received on paydowns of consolidated variable interest entities assets. The Company consolidates these variable interest entities as the result of its control rights obtained under financial guaranty insurance contracts.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ProceedsfromPaydownsonFinancialGuarantyVariableInterestEntitiesAssets" xlink:href="ago-20240630.xsd#ago_ProceedsfromPaydownsonFinancialGuarantyVariableInterestEntitiesAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ProceedsfromPaydownsonFinancialGuarantyVariableInterestEntitiesAssets" xlink:to="lab_ago_ProceedsfromPaydownsonFinancialGuarantyVariableInterestEntitiesAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_SalvageAndSubrogationRecoveriesValue_0907fdcb-266a-4f3f-a53c-ca0c2148d719_terseLabel_en-US" xlink:label="lab_us-gaap_SalvageAndSubrogationRecoveriesValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Salvage and subrogation recoverable</link:label>
    <link:label id="lab_us-gaap_SalvageAndSubrogationRecoveriesValue_label_en-US" xlink:label="lab_us-gaap_SalvageAndSubrogationRecoveriesValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Salvage and Subrogation Recoveries, Value</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalvageAndSubrogationRecoveriesValue" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SalvageAndSubrogationRecoveriesValue"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SalvageAndSubrogationRecoveriesValue" xlink:to="lab_us-gaap_SalvageAndSubrogationRecoveriesValue" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_AssuredGuarantyUSHoldingsInc6125SeniorNotesDue2028Member_fe000040-0f13-4393-be4b-a0e178eeda39_terseLabel_en-US" xlink:label="lab_ago_AssuredGuarantyUSHoldingsInc6125SeniorNotesDue2028Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Assured Guaranty US Holdings Inc. 6.125% Senior Notes Due 2028</link:label>
    <link:label id="lab_ago_AssuredGuarantyUSHoldingsInc6125SeniorNotesDue2028Member_label_en-US" xlink:label="lab_ago_AssuredGuarantyUSHoldingsInc6125SeniorNotesDue2028Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assured Guaranty US Holdings Inc. 6.125% Senior Notes Due 2028 [Member]</link:label>
    <link:label id="lab_ago_AssuredGuarantyUSHoldingsInc6125SeniorNotesDue2028Member_documentation_en-US" xlink:label="lab_ago_AssuredGuarantyUSHoldingsInc6125SeniorNotesDue2028Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Assured Guaranty US Holdings Inc. 6.125% Senior Notes Due 2028</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_AssuredGuarantyUSHoldingsInc6125SeniorNotesDue2028Member" xlink:href="ago-20240630.xsd#ago_AssuredGuarantyUSHoldingsInc6125SeniorNotesDue2028Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_AssuredGuarantyUSHoldingsInc6125SeniorNotesDue2028Member" xlink:to="lab_ago_AssuredGuarantyUSHoldingsInc6125SeniorNotesDue2028Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenuetobeRecognizedBeyondYear20_c15c3323-087b-4caa-a74a-1c7a921e1072_terseLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenuetobeRecognizedBeyondYear20" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">After 2043</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenuetobeRecognizedBeyondYear20_label_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenuetobeRecognizedBeyondYear20" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts Future Expected Premium Revenue to be Recognized, Beyond Year 20</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenuetobeRecognizedBeyondYear20_documentation_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenuetobeRecognizedBeyondYear20" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">For financial guarantee insurance contracts, the amount of premium revenue expected to be recognized beyond the twentieth year following the statement of financial position reporting date.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenuetobeRecognizedBeyondYear20" xlink:href="ago-20240630.xsd#ago_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenuetobeRecognizedBeyondYear20"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenuetobeRecognizedBeyondYear20" xlink:to="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenuetobeRecognizedBeyondYear20" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax_f812ec59-7dd0-4da2-b6bf-30e8b4590340_totalLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Other comprehensive income (loss)</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax_2ff3f7c1-5271-4337-9269-0fc587b57221_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other comprehensive income (loss)</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), Net of Tax</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_DocumentType_d28a53a1-9518-448b-a402-659956e08272_terseLabel_en-US" xlink:label="lab_dei_DocumentType" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Type</link:label>
    <link:label id="lab_dei_DocumentType_label_en-US" xlink:label="lab_dei_DocumentType" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Type</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_DocumentType"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentType" xlink:to="lab_dei_DocumentType" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_DerivativeContractTypeDomain_a43d3a56-ffc5-4b2f-9f11-1a34a9c041ea_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeContractTypeDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative Contract [Domain]</link:label>
    <link:label id="lab_us-gaap_DerivativeContractTypeDomain_label_en-US" xlink:label="lab_us-gaap_DerivativeContractTypeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Contract [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeContractTypeDomain" xlink:to="lab_us-gaap_DerivativeContractTypeDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_b10a20cd-5c2c-489d-a00a-240b4822bdcc_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Information by Operating Segments</link:label>
    <link:label id="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_label_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Segment Reporting Information, by Segment [Table Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock" xlink:to="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_GainLossOnInvestmentsMember1_acf338ef-5230-4b14-aa11-3c1492dfeb86_terseLabel_en-US" xlink:label="lab_us-gaap_GainLossOnInvestmentsMember1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Realized gains (losses) on investments</link:label>
    <link:label id="lab_us-gaap_GainLossOnInvestmentsMember1_label_en-US" xlink:label="lab_us-gaap_GainLossOnInvestmentsMember1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gain (Loss) on Investments [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnInvestmentsMember1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GainLossOnInvestmentsMember1"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GainLossOnInvestmentsMember1" xlink:to="lab_us-gaap_GainLossOnInvestmentsMember1" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinThirdFullFiscalYear_5adffc81-2f19-43d6-ac9e-d61c77080fe0_terseLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinThirdFullFiscalYear" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2027</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinThirdFullFiscalYear_label_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinThirdFullFiscalYear" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Future Expected, Net Loss to be Expensed in Third Full Fiscal Year</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinThirdFullFiscalYear_documentation_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinThirdFullFiscalYear" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Future Expected, Net Loss to be Expensed in Third Full Fiscal Year</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinThirdFullFiscalYear" xlink:href="ago-20240630.xsd#ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinThirdFullFiscalYear"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinThirdFullFiscalYear" xlink:to="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinThirdFullFiscalYear" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet_6811dd3e-9cd6-49b5-a632-ffa62ce83425_negatedLabel_en-US" xlink:label="lab_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Loss and LAE reserve - financial guaranty insurance contracts, net of reinsurance</link:label>
    <link:label id="lab_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet_label_en-US" xlink:label="lab_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liability for Unpaid Claims and Claims Adjustment Expense, Net</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet" xlink:to="lab_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FinancingReceivables60To89DaysPastDueMember_5a7cb2d6-2a51-4a2d-9bab-29087e95a879_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivables60To89DaysPastDueMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">60 &#8211; 89 Days Delinquent</link:label>
    <link:label id="lab_us-gaap_FinancingReceivables60To89DaysPastDueMember_label_en-US" xlink:label="lab_us-gaap_FinancingReceivables60To89DaysPastDueMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Asset, 60 to 89 Days Past Due [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivables60To89DaysPastDueMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivables60To89DaysPastDueMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancingReceivables60To89DaysPastDueMember" xlink:to="lab_us-gaap_FinancingReceivables60To89DaysPastDueMember" xlink:type="arc" order="1"/>
    <link:label id="lab_srt_MaximumMember_d9e4d7e7-15ab-4ecc-92c7-bb3410f33021_terseLabel_en-US" xlink:label="lab_srt_MaximumMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maximum</link:label>
    <link:label id="lab_srt_MaximumMember_label_en-US" xlink:label="lab_srt_MaximumMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Maximum [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MaximumMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_MaximumMember" xlink:to="lab_srt_MaximumMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_SoundPointAgreementMember_94627356-a663-4952-b69b-0e3a45052e2a_terseLabel_en-US" xlink:label="lab_ago_SoundPointAgreementMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sound Point Agreement</link:label>
    <link:label id="lab_ago_SoundPointAgreementMember_label_en-US" xlink:label="lab_ago_SoundPointAgreementMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Sound Point Agreement [Member]</link:label>
    <link:label id="lab_ago_SoundPointAgreementMember_documentation_en-US" xlink:label="lab_ago_SoundPointAgreementMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Sound Point Agreement</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_SoundPointAgreementMember" xlink:href="ago-20240630.xsd#ago_SoundPointAgreementMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_SoundPointAgreementMember" xlink:to="lab_ago_SoundPointAgreementMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_EquityValuationAssumptionDifferenceFnTextBlock_terseLabel_en-US" xlink:label="lab_ecd_EquityValuationAssumptionDifferenceFnTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity Valuation Assumption Difference, Footnote</link:label>
    <link:label id="lab_ecd_EquityValuationAssumptionDifferenceFnTextBlock_label_en-US" xlink:label="lab_ecd_EquityValuationAssumptionDifferenceFnTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity Valuation Assumption Difference, Footnote [Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_EquityValuationAssumptionDifferenceFnTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_EquityValuationAssumptionDifferenceFnTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_EquityValuationAssumptionDifferenceFnTextBlock" xlink:to="lab_ecd_EquityValuationAssumptionDifferenceFnTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_GainContingenciesByNatureAxis_edc231b3-5d52-46e3-b5fe-043e8b7c9d5d_terseLabel_en-US" xlink:label="lab_us-gaap_GainContingenciesByNatureAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gain Contingencies, Nature [Axis]</link:label>
    <link:label id="lab_us-gaap_GainContingenciesByNatureAxis_label_en-US" xlink:label="lab_us-gaap_GainContingenciesByNatureAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gain Contingencies, Nature [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainContingenciesByNatureAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GainContingenciesByNatureAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GainContingenciesByNatureAxis" xlink:to="lab_us-gaap_GainContingenciesByNatureAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_DeferredTaxAssetsRealizationAssessmentPeriodForWhichCumulativeOperatingIncomeConsidered_a0ac9e4d-4ed5-4d2b-8638-e842ba5314ff_terseLabel_en-US" xlink:label="lab_ago_DeferredTaxAssetsRealizationAssessmentPeriodForWhichCumulativeOperatingIncomeConsidered" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Realization assessment period</link:label>
    <link:label id="lab_ago_DeferredTaxAssetsRealizationAssessmentPeriodForWhichCumulativeOperatingIncomeConsidered_label_en-US" xlink:label="lab_ago_DeferredTaxAssetsRealizationAssessmentPeriodForWhichCumulativeOperatingIncomeConsidered" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Tax Assets, Realization Assessment Period for which Cumulative Operating Income Considered</link:label>
    <link:label id="lab_ago_DeferredTaxAssetsRealizationAssessmentPeriodForWhichCumulativeOperatingIncomeConsidered_documentation_en-US" xlink:label="lab_ago_DeferredTaxAssetsRealizationAssessmentPeriodForWhichCumulativeOperatingIncomeConsidered" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the period for which the entity has considered cumulative operating income for the assessment of realization of deferred tax assets.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_DeferredTaxAssetsRealizationAssessmentPeriodForWhichCumulativeOperatingIncomeConsidered" xlink:href="ago-20240630.xsd#ago_DeferredTaxAssetsRealizationAssessmentPeriodForWhichCumulativeOperatingIncomeConsidered"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_DeferredTaxAssetsRealizationAssessmentPeriodForWhichCumulativeOperatingIncomeConsidered" xlink:to="lab_ago_DeferredTaxAssetsRealizationAssessmentPeriodForWhichCumulativeOperatingIncomeConsidered" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_VariableInterestEntityNumberofPoliciesMonitoredNotWithintheScopeofASC810_b214efe7-5690-451d-b2b0-c557cfc6f5f4_terseLabel_en-US" xlink:label="lab_ago_VariableInterestEntityNumberofPoliciesMonitoredNotWithintheScopeofASC810" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of policies monitored, not within the scope of ASC 810</link:label>
    <link:label id="lab_ago_VariableInterestEntityNumberofPoliciesMonitoredNotWithintheScopeofASC810_label_en-US" xlink:label="lab_ago_VariableInterestEntityNumberofPoliciesMonitoredNotWithintheScopeofASC810" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable Interest Entity, Number of Policies Monitored, Not Within the Scope of ASC 810</link:label>
    <link:label id="lab_ago_VariableInterestEntityNumberofPoliciesMonitoredNotWithintheScopeofASC810_documentation_en-US" xlink:label="lab_ago_VariableInterestEntityNumberofPoliciesMonitoredNotWithintheScopeofASC810" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Variable Interest Entity, Number of Policies Monitored, Not Within the Scope of ASC 810</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_VariableInterestEntityNumberofPoliciesMonitoredNotWithintheScopeofASC810" xlink:href="ago-20240630.xsd#ago_VariableInterestEntityNumberofPoliciesMonitoredNotWithintheScopeofASC810"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_VariableInterestEntityNumberofPoliciesMonitoredNotWithintheScopeofASC810" xlink:to="lab_ago_VariableInterestEntityNumberofPoliciesMonitoredNotWithintheScopeofASC810" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_InvestmentTypeAxis_062b48e6-4bc0-4d10-8179-e5f61d50c4ad_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentTypeAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investment Type [Axis]</link:label>
    <link:label id="lab_us-gaap_InvestmentTypeAxis_label_en-US" xlink:label="lab_us-gaap_InvestmentTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investment Type [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InvestmentTypeAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentTypeAxis" xlink:to="lab_us-gaap_InvestmentTypeAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_a2750e4f-30fe-4e49-8fff-4f050a649e13_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table]</link:label>
    <link:label id="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_label_en-US" xlink:label="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:to="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_RecoveryEstimateSensitivityAnalysisChangeInEstimateForDecreasedConditionalDefaultRateRampDownPeriod_631fab8b-d413-46d2-a7da-ada9569bd6e8_terseLabel_en-US" xlink:label="lab_ago_RecoveryEstimateSensitivityAnalysisChangeInEstimateForDecreasedConditionalDefaultRateRampDownPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Change in estimate for decreased conditional default rate ramp down period</link:label>
    <link:label id="lab_ago_RecoveryEstimateSensitivityAnalysisChangeInEstimateForDecreasedConditionalDefaultRateRampDownPeriod_label_en-US" xlink:label="lab_ago_RecoveryEstimateSensitivityAnalysisChangeInEstimateForDecreasedConditionalDefaultRateRampDownPeriod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Recovery Estimate Sensitivity Analysis Change in Estimate for Decreased Conditional Default Rate Ramp Down Period</link:label>
    <link:label id="lab_ago_RecoveryEstimateSensitivityAnalysisChangeInEstimateForDecreasedConditionalDefaultRateRampDownPeriod_documentation_en-US" xlink:label="lab_ago_RecoveryEstimateSensitivityAnalysisChangeInEstimateForDecreasedConditionalDefaultRateRampDownPeriod" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the change in expected loss on a pool of insured obligations that would result from a decrease in the conditional default rate ramp period.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_RecoveryEstimateSensitivityAnalysisChangeInEstimateForDecreasedConditionalDefaultRateRampDownPeriod" xlink:href="ago-20240630.xsd#ago_RecoveryEstimateSensitivityAnalysisChangeInEstimateForDecreasedConditionalDefaultRateRampDownPeriod"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_RecoveryEstimateSensitivityAnalysisChangeInEstimateForDecreasedConditionalDefaultRateRampDownPeriod" xlink:to="lab_ago_RecoveryEstimateSensitivityAnalysisChangeInEstimateForDecreasedConditionalDefaultRateRampDownPeriod" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ParOutstandingAbstract_4c0cc5c3-ec4e-435f-ad46-1b550bb29429_terseLabel_en-US" xlink:label="lab_ago_ParOutstandingAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Par Outstanding</link:label>
    <link:label id="lab_ago_ParOutstandingAbstract_label_en-US" xlink:label="lab_ago_ParOutstandingAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Par Outstanding [Abstract]</link:label>
    <link:label id="lab_ago_ParOutstandingAbstract_documentation_en-US" xlink:label="lab_ago_ParOutstandingAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Par Outstanding</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ParOutstandingAbstract" xlink:href="ago-20240630.xsd#ago_ParOutstandingAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ParOutstandingAbstract" xlink:to="lab_ago_ParOutstandingAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_AccruedInvestmentIncomeReceivable_bd03b0cd-c874-4f70-8731-7a01e40cba11_terseLabel_en-US" xlink:label="lab_us-gaap_AccruedInvestmentIncomeReceivable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued investment income</link:label>
    <link:label id="lab_us-gaap_AccruedInvestmentIncomeReceivable_label_en-US" xlink:label="lab_us-gaap_AccruedInvestmentIncomeReceivable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrued Investment Income Receivable</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedInvestmentIncomeReceivable" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccruedInvestmentIncomeReceivable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccruedInvestmentIncomeReceivable" xlink:to="lab_us-gaap_AccruedInvestmentIncomeReceivable" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_1af15844-17a7-4ebf-890c-d6b8a0e6cb56_terseLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Dilutive securities:</link:label>
    <link:label id="lab_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_label_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Weighted Average Number of Shares Outstanding, Diluted, Adjustment [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract" xlink:to="lab_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_srt_RangeAxis_08edae20-96dd-4745-8840-6fa40c522c2f_terseLabel_en-US" xlink:label="lab_srt_RangeAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Statistical Measurement [Axis]</link:label>
    <link:label id="lab_srt_RangeAxis_label_en-US" xlink:label="lab_srt_RangeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statistical Measurement [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_RangeAxis" xlink:to="lab_srt_RangeAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_NonRule10b51ArrTrmntdFlag_terseLabel_en-US" xlink:label="lab_ecd_NonRule10b51ArrTrmntdFlag" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-Rule 10b5-1 Arrangement Terminated</link:label>
    <link:label id="lab_ecd_NonRule10b51ArrTrmntdFlag_label_en-US" xlink:label="lab_ecd_NonRule10b51ArrTrmntdFlag" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-Rule 10b5-1 Arrangement Terminated [Flag]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_NonRule10b51ArrTrmntdFlag" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_NonRule10b51ArrTrmntdFlag"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_NonRule10b51ArrTrmntdFlag" xlink:to="lab_ecd_NonRule10b51ArrTrmntdFlag" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_e90fcf39-8567-486d-97c6-4c500669eaaf_totalLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Income (loss) before income taxes</link:label>
    <link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_39623351-d2cb-48bf-99c9-6ad098638878_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pretax income (loss)</link:label>
    <link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_label_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
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    <link:label id="lab_ago_NumberofOutsideManagersManagingInvestmentPortfolio_20e14198-4571-4847-9816-37569ed4393a_terseLabel_en-US" xlink:label="lab_ago_NumberofOutsideManagersManagingInvestmentPortfolio" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of outside managers managing investment portfolio</link:label>
    <link:label id="lab_ago_NumberofOutsideManagersManagingInvestmentPortfolio_label_en-US" xlink:label="lab_ago_NumberofOutsideManagersManagingInvestmentPortfolio" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of Outside Managers Managing Investment Portfolio</link:label>
    <link:label id="lab_ago_NumberofOutsideManagersManagingInvestmentPortfolio_documentation_en-US" xlink:label="lab_ago_NumberofOutsideManagersManagingInvestmentPortfolio" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of Outside Managers Managing Investment Portfolio</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_NumberofOutsideManagersManagingInvestmentPortfolio" xlink:href="ago-20240630.xsd#ago_NumberofOutsideManagersManagingInvestmentPortfolio"/>
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    <link:label id="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsLiquidationRate_7734fbb4-cdd4-4c27-b27d-2c19bb14a676_terseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsLiquidationRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Liquidation rate</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsLiquidationRate_label_en-US" xlink:label="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsLiquidationRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Projected Loss Assumptions, Liquidation Rate</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsLiquidationRate_documentation_en-US" xlink:label="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsLiquidationRate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Projected Loss Assumptions, Liquidation Rate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuredFinancialObligationsProjectedLossAssumptionsLiquidationRate" xlink:href="ago-20240630.xsd#ago_InsuredFinancialObligationsProjectedLossAssumptionsLiquidationRate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InsuredFinancialObligationsProjectedLossAssumptionsLiquidationRate" xlink:to="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsLiquidationRate" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_NonPeoNeoAvgTotalCompAmt_terseLabel_en-US" xlink:label="lab_ecd_NonPeoNeoAvgTotalCompAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-PEO NEO Average Total Compensation Amount</link:label>
    <link:label id="lab_ecd_NonPeoNeoAvgTotalCompAmt_label_en-US" xlink:label="lab_ecd_NonPeoNeoAvgTotalCompAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-PEO NEO Average Total Compensation Amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_NonPeoNeoAvgTotalCompAmt" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_NonPeoNeoAvgTotalCompAmt"/>
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    <link:label id="lab_ecd_OutstandingRecoveryIndName_terseLabel_en-US" xlink:label="lab_ecd_OutstandingRecoveryIndName" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Name</link:label>
    <link:label id="lab_ecd_OutstandingRecoveryIndName_label_en-US" xlink:label="lab_ecd_OutstandingRecoveryIndName" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Outstanding Recovery, Individual Name</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_OutstandingRecoveryIndName" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_OutstandingRecoveryIndName"/>
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    <link:label id="lab_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock_f6cb6df1-bc65-43f7-a155-def138f297b0_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share</link:label>
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    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThan10AndWithin15YearsFromBalanceSheetDate_1281c35e-950f-4a2e-a302-a4ff2c2aa997_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThan10AndWithin15YearsFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2034-2038</link:label>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThan10AndWithin15YearsFromBalanceSheetDate_label_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThan10AndWithin15YearsFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contract, Premium Revenue to be Recognized, after Year 10 Through 15</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThan10AndWithin15YearsFromBalanceSheetDate" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThan10AndWithin15YearsFromBalanceSheetDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThan10AndWithin15YearsFromBalanceSheetDate" xlink:to="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThan10AndWithin15YearsFromBalanceSheetDate" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNetClaimLiabilityAbstract_90cefd70-259b-4744-bf82-db4a72062c23_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNetClaimLiabilityAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected losses to be paid (recovered)</link:label>
    <link:label id="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNetClaimLiabilityAbstract_label_en-US" xlink:label="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNetClaimLiabilityAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations with Credit Deterioration, Net Claim Liability [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNetClaimLiabilityAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNetClaimLiabilityAbstract"/>
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    <link:label id="lab_ecd_AwardTmgPredtrmndFlag_terseLabel_en-US" xlink:label="lab_ecd_AwardTmgPredtrmndFlag" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Award Timing Predetermined</link:label>
    <link:label id="lab_ecd_AwardTmgPredtrmndFlag_label_en-US" xlink:label="lab_ecd_AwardTmgPredtrmndFlag" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Award Timing Predetermined [Flag]</link:label>
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    <link:label id="lab_us-gaap_SubsequentEventTypeDomain_label_en-US" xlink:label="lab_us-gaap_SubsequentEventTypeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsequent Event Type [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventTypeDomain" xlink:to="lab_us-gaap_SubsequentEventTypeDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_PaymentsOfDividendsCommonStock_43f04078-816b-43ef-8ccb-1a132b2157d8_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsOfDividendsCommonStock" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Dividends paid</link:label>
    <link:label id="lab_us-gaap_PaymentsOfDividendsCommonStock_label_en-US" xlink:label="lab_us-gaap_PaymentsOfDividendsCommonStock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments of Ordinary Dividends, Common Stock</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividendsCommonStock" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsOfDividendsCommonStock"/>
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    <link:label id="lab_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_a3b11e47-276c-4fd3-bafc-94b6c4c1ce86_terseLabel_en-US" xlink:label="lab_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investment, Name [Axis]</link:label>
    <link:label id="lab_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_label_en-US" xlink:label="lab_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investment, Name [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
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    <link:label id="lab_us-gaap_RecourseStatusAxis_dc9b1b87-ca47-4cf6-a7c4-1b900bc36ffd_terseLabel_en-US" xlink:label="lab_us-gaap_RecourseStatusAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Recourse Status [Axis]</link:label>
    <link:label id="lab_us-gaap_RecourseStatusAxis_label_en-US" xlink:label="lab_us-gaap_RecourseStatusAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Recourse Status [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RecourseStatusAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RecourseStatusAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RecourseStatusAxis" xlink:to="lab_us-gaap_RecourseStatusAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuaranteeInsurancePremiumsTable_0c5ec172-9b17-4824-89cf-8c6a6e0ee307_terseLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeInsurancePremiumsTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Premiums [Table]</link:label>
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    <link:label id="lab_ago_FinancialGuaranteeInsurancePremiumsTable_documentation_en-US" xlink:label="lab_ago_FinancialGuaranteeInsurancePremiumsTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Premiums [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuaranteeInsurancePremiumsTable" xlink:href="ago-20240630.xsd#ago_FinancialGuaranteeInsurancePremiumsTable"/>
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    <link:label id="lab_dei_EntityListingsExchangeAxis_3dc6bc44-cf2e-4db1-9e7a-f29e6d046362_terseLabel_en-US" xlink:label="lab_dei_EntityListingsExchangeAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Listings, Exchange [Axis]</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityListingsExchangeAxis" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityListingsExchangeAxis"/>
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    <link:label id="lab_us-gaap_EarningsPerShareDiluted_7d955184-d8db-4ae2-b058-d893fafb37ba_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareDiluted" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Diluted (in dollars per share)</link:label>
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    <link:label id="lab_us-gaap_EarningsPerShareDiluted_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareDiluted" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings Per Share, Diluted</link:label>
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    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsFinalConditionalDefaultRateasPercentageofPlateauConditionalDefaultRate_3b56661a-8f88-4e34-b22d-76084e05f932_terseLabel_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsFinalConditionalDefaultRateasPercentageofPlateauConditionalDefaultRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Final conditional default rate as a percentage of plateau conditional default rate</link:label>
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    <link:label id="lab_ago_InsuredFinancialObligationsInsuredContractualPaymentsOutstandingNet_8cc47bfa-bd8c-4240-b625-1e8e3a2e1929_verboseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsInsuredContractualPaymentsOutstandingNet" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Net</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsInsuredContractualPaymentsOutstandingNet_7079bb6b-b293-48d4-b23b-c117ef5c46de_totalLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsInsuredContractualPaymentsOutstandingNet" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsInsuredContractualPaymentsOutstandingNet_label_en-US" xlink:label="lab_ago_InsuredFinancialObligationsInsuredContractualPaymentsOutstandingNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations Insured Contractual Payments Outstanding, Net</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsInsuredContractualPaymentsOutstandingNet_documentation_en-US" xlink:label="lab_ago_InsuredFinancialObligationsInsuredContractualPaymentsOutstandingNet" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the amount of insured contractual payments (principal and interest) outstanding on the underlying insured obligations for financial guaranty contracts, net of ceded contracts.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuredFinancialObligationsInsuredContractualPaymentsOutstandingNet" xlink:href="ago-20240630.xsd#ago_InsuredFinancialObligationsInsuredContractualPaymentsOutstandingNet"/>
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    <link:label id="lab_ecd_RestatementDoesNotRequireRecoveryTextBlock_label_en-US" xlink:label="lab_ecd_RestatementDoesNotRequireRecoveryTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restatement Does Not Require Recovery [Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_RestatementDoesNotRequireRecoveryTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_RestatementDoesNotRequireRecoveryTextBlock"/>
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    <link:label id="lab_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_79bd7c02-5240-4550-9c29-1b4e4f4ec210_terseLabel_en-US" xlink:label="lab_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Foreign exchange gains (losses) on remeasurement</link:label>
    <link:label id="lab_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_label_en-US" xlink:label="lab_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gain (Loss), Foreign Currency Transaction, before Tax</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ForeignCurrencyTransactionGainLossBeforeTax"/>
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    <link:label id="lab_us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic_06a4246d-8472-4627-ae0a-c52c90f6197d_terseLabel_en-US" xlink:label="lab_us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Less: Distributed and undistributed income (loss) available to nonvested shareholders</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic"/>
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    <link:label id="lab_us-gaap_StatementOfFinancialPositionAbstract_3f18f371-9b3b-4d1a-9770-2adb271f7257_terseLabel_en-US" xlink:label="lab_us-gaap_StatementOfFinancialPositionAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Statement of Financial Position [Abstract]</link:label>
    <link:label id="lab_us-gaap_StatementOfFinancialPositionAbstract_label_en-US" xlink:label="lab_us-gaap_StatementOfFinancialPositionAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Financial Position [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfFinancialPositionAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementOfFinancialPositionAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract" xlink:to="lab_us-gaap_StatementOfFinancialPositionAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_AssetBackedSecuritiesMember_ef286711-aa2e-49b1-a48f-2305fab073f7_terseLabel_en-US" xlink:label="lab_us-gaap_AssetBackedSecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Asset-backed securities</link:label>
    <link:label id="lab_us-gaap_AssetBackedSecuritiesMember_label_en-US" xlink:label="lab_us-gaap_AssetBackedSecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Asset-Backed Securities [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetBackedSecuritiesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetBackedSecuritiesMember" xlink:to="lab_us-gaap_AssetBackedSecuritiesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1_18551ba0-ce4b-49f8-bc47-60755f439766_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net income (loss)</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1" xlink:to="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableExcludingOtherNonFinancialGuarantee_33b626bb-9a60-4ed3-aded-8f431eda839a_periodStartLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableExcludingOtherNonFinancialGuarantee" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Financial guaranty insurance premiums receivable</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableExcludingOtherNonFinancialGuarantee_e5afb97d-2f25-48e6-90b7-0468e7ded39d_periodEndLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableExcludingOtherNonFinancialGuarantee" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Financial guaranty insurance premiums receivable</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableExcludingOtherNonFinancialGuarantee_label_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableExcludingOtherNonFinancialGuarantee" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Premium Receivable, Excluding Other Non Financial Guarantee</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableExcludingOtherNonFinancialGuarantee_documentation_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableExcludingOtherNonFinancialGuarantee" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Premium Receivable, Excluding Other Non Financial Guarantee</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableExcludingOtherNonFinancialGuarantee" xlink:href="ago-20240630.xsd#ago_FinancialGuaranteeInsuranceContractsPremiumReceivableExcludingOtherNonFinancialGuarantee"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableExcludingOtherNonFinancialGuarantee" xlink:to="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableExcludingOtherNonFinancialGuarantee" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedWithinOneYearFromBalanceSheetDate_4d1d9e15-43cc-4b98-90d0-ad8dfe67ce4d_totalLabel_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedWithinOneYearFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Subtotal 2024</link:label>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedWithinOneYearFromBalanceSheetDate_label_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedWithinOneYearFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contract, Premium Receivable, to be Collected, Year One</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedWithinOneYearFromBalanceSheetDate" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedWithinOneYearFromBalanceSheetDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedWithinOneYearFromBalanceSheetDate" xlink:to="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedWithinOneYearFromBalanceSheetDate" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ProfitLoss_45e47526-8d3a-4511-b9f2-2aef4dc8cfa2_totalLabel_en-US" xlink:label="lab_us-gaap_ProfitLoss" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net income (loss)</link:label>
    <link:label id="lab_us-gaap_ProfitLoss_066b1537-56ee-4a59-bc0d-4f5b31419a5a_terseLabel_en-US" xlink:label="lab_us-gaap_ProfitLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net income (loss)</link:label>
    <link:label id="lab_us-gaap_ProfitLoss_label_en-US" xlink:label="lab_us-gaap_ProfitLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Income (Loss), Including Portion Attributable to Noncontrolling Interest</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProfitLoss"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProfitLoss" xlink:to="lab_us-gaap_ProfitLoss" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_GuaranteeObligationsNatureDomain_4180103d-f532-4a85-91c7-1e39a532e1e4_terseLabel_en-US" xlink:label="lab_us-gaap_GuaranteeObligationsNatureDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Nature [Domain]</link:label>
    <link:label id="lab_us-gaap_GuaranteeObligationsNatureDomain_label_en-US" xlink:label="lab_us-gaap_GuaranteeObligationsNatureDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Nature [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsNatureDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GuaranteeObligationsNatureDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GuaranteeObligationsNatureDomain" xlink:to="lab_us-gaap_GuaranteeObligationsNatureDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_PuertoRicoTransportationAuthorityMember_b439a239-fb44-47c2-98ae-21bddfc75d43_terseLabel_en-US" xlink:label="lab_ago_PuertoRicoTransportationAuthorityMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Puerto Rico Transportation Authority</link:label>
    <link:label id="lab_ago_PuertoRicoTransportationAuthorityMember_label_en-US" xlink:label="lab_ago_PuertoRicoTransportationAuthorityMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Puerto Rico Transportation Authority [Member]</link:label>
    <link:label id="lab_ago_PuertoRicoTransportationAuthorityMember_documentation_en-US" xlink:label="lab_ago_PuertoRicoTransportationAuthorityMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Puerto Rico Transportation Authority [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_PuertoRicoTransportationAuthorityMember" xlink:href="ago-20240630.xsd#ago_PuertoRicoTransportationAuthorityMember"/>
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    <link:label id="lab_us-gaap_IncomeTaxExpenseBenefit_c9ba5de0-6472-4acf-a7bf-b3988abfaf2d_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefit" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Less: Provision (benefit) for income taxes</link:label>
    <link:label id="lab_us-gaap_IncomeTaxExpenseBenefit_1261749a-40af-4a54-8557-c86976cde266_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefit" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Income tax benefit</link:label>
    <link:label id="lab_us-gaap_IncomeTaxExpenseBenefit_eaab3c2b-7348-47a1-bd1f-1e975fe288ef_totalLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefit" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total provision (benefit) for income taxes</link:label>
    <link:label id="lab_us-gaap_IncomeTaxExpenseBenefit_581041f6-f5a9-44f3-954e-1dfc8f7a6c70_negatedLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefit" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Tax (provision) benefit</link:label>
    <link:label id="lab_us-gaap_IncomeTaxExpenseBenefit_label_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefit" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Expense (Benefit)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
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    <link:label id="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_424e4745-1d47-4c8a-9fea-5088c16bcb8e_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems"/>
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    <link:label id="lab_us-gaap_DerivativeNotionalAmount_b502c8db-3df3-4b67-9f6c-b7fa5d831ee0_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeNotionalAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Collateral posting requirement</link:label>
    <link:label id="lab_us-gaap_DerivativeNotionalAmount_label_en-US" xlink:label="lab_us-gaap_DerivativeNotionalAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative, Notional Amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeNotionalAmount"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeNotionalAmount" xlink:to="lab_us-gaap_DerivativeNotionalAmount" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue_9da4b0e9-8ddb-464e-afcc-90172847c131_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Due after 10&#160;years</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_AGAndAGMMember_bc6bbdd6-19d3-4d24-96a8-2e3d226ed2a1_terseLabel_en-US" xlink:label="lab_ago_AGAndAGMMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">AG And AGM</link:label>
    <link:label id="lab_ago_AGAndAGMMember_label_en-US" xlink:label="lab_ago_AGAndAGMMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">AG And AGM [Member]</link:label>
    <link:label id="lab_ago_AGAndAGMMember_documentation_en-US" xlink:label="lab_ago_AGAndAGMMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">AG And AGM</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_AGAndAGMMember" xlink:href="ago-20240630.xsd#ago_AGAndAGMMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_AGAndAGMMember" xlink:to="lab_ago_AGAndAGMMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_IncomeTaxesTable_0c5feaf2-98e5-413a-b514-e8adc261902e_terseLabel_en-US" xlink:label="lab_ago_IncomeTaxesTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income Taxes [Table]</link:label>
    <link:label id="lab_ago_IncomeTaxesTable_label_en-US" xlink:label="lab_ago_IncomeTaxesTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Taxes [Table]</link:label>
    <link:label id="lab_ago_IncomeTaxesTable_documentation_en-US" xlink:label="lab_ago_IncomeTaxesTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Income Taxes [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_IncomeTaxesTable" xlink:href="ago-20240630.xsd#ago_IncomeTaxesTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_IncomeTaxesTable" xlink:to="lab_ago_IncomeTaxesTable" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_a9cbd647-43af-4105-977a-baa71517fa84_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Asset management fees</link:label>
    <link:label id="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_label_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue from Contract with Customer, Excluding Assessed Tax</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:to="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_faffba04-88a3-412c-99a2-8c1482ccb6d9_terseLabel_en-US" xlink:label="lab_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Statement of Comprehensive Income [Abstract]</link:label>
    <link:label id="lab_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_label_en-US" xlink:label="lab_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Comprehensive Income [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract" xlink:to="lab_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_8bcc2aeb-8266-439b-9bb7-31cfe728c697_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash flows provided by (used in) investing activities</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Investing Activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_NumberofDelinquentPayments_2c0f4c3f-1226-4661-808f-24aa1abfe1af_terseLabel_en-US" xlink:label="lab_ago_NumberofDelinquentPayments" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of delinquent payments</link:label>
    <link:label id="lab_ago_NumberofDelinquentPayments_label_en-US" xlink:label="lab_ago_NumberofDelinquentPayments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of Delinquent Payments</link:label>
    <link:label id="lab_ago_NumberofDelinquentPayments_documentation_en-US" xlink:label="lab_ago_NumberofDelinquentPayments" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of Delinquent Payments</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_NumberofDelinquentPayments" xlink:href="ago-20240630.xsd#ago_NumberofDelinquentPayments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_NumberofDelinquentPayments" xlink:to="lab_ago_NumberofDelinquentPayments" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_OtherInvestmentsFairValueDisclosure_768a2822-39d6-4dd6-899e-9dcf5254f84f_terseLabel_en-US" xlink:label="lab_ago_OtherInvestmentsFairValueDisclosure" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other invested assets fair value</link:label>
    <link:label id="lab_ago_OtherInvestmentsFairValueDisclosure_label_en-US" xlink:label="lab_ago_OtherInvestmentsFairValueDisclosure" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Investments Fair Value Disclosure</link:label>
    <link:label id="lab_ago_OtherInvestmentsFairValueDisclosure_documentation_en-US" xlink:label="lab_ago_OtherInvestmentsFairValueDisclosure" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This element represents the fair value investments categorized as other which are not in and of themselves material enough to require separate disclosure.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_OtherInvestmentsFairValueDisclosure" xlink:href="ago-20240630.xsd#ago_OtherInvestmentsFairValueDisclosure"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_OtherInvestmentsFairValueDisclosure" xlink:to="lab_ago_OtherInvestmentsFairValueDisclosure" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_IncomeTaxAuthorityAxis_da7e9e90-56cb-42ad-bd64-555faaf1c1bd_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxAuthorityAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income Tax Authority [Axis]</link:label>
    <link:label id="lab_us-gaap_IncomeTaxAuthorityAxis_label_en-US" xlink:label="lab_us-gaap_IncomeTaxAuthorityAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Jurisdiction [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxAuthorityAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis" xlink:to="lab_us-gaap_IncomeTaxAuthorityAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsPeriodOfConditionalDefaultRateDownwardTrend_1d692acc-7c43-40ee-a125-22d40bca7d4d_terseLabel_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsPeriodOfConditionalDefaultRateDownwardTrend" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Period of conditional default rate downward trend</link:label>
    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsPeriodOfConditionalDefaultRateDownwardTrend_label_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsPeriodOfConditionalDefaultRateDownwardTrend" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Projected Loss Assumptions, Period Of Conditional Default Rate Downward Trend</link:label>
    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsPeriodOfConditionalDefaultRateDownwardTrend_documentation_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsPeriodOfConditionalDefaultRateDownwardTrend" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Projected Loss Assumptions, Period Of Conditional Default Rate Downward Trend</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_GuarantorObligationsProjectedLossAssumptionsPeriodOfConditionalDefaultRateDownwardTrend" xlink:href="ago-20240630.xsd#ago_GuarantorObligationsProjectedLossAssumptionsPeriodOfConditionalDefaultRateDownwardTrend"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_GuarantorObligationsProjectedLossAssumptionsPeriodOfConditionalDefaultRateDownwardTrend" xlink:to="lab_ago_GuarantorObligationsProjectedLossAssumptionsPeriodOfConditionalDefaultRateDownwardTrend" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_AllAdjToCompMember_terseLabel_en-US" xlink:label="lab_ecd_AllAdjToCompMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">All Adjustments to Compensation</link:label>
    <link:label id="lab_ecd_AllAdjToCompMember_label_en-US" xlink:label="lab_ecd_AllAdjToCompMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">All Adjustments to Compensation [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AllAdjToCompMember" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_AllAdjToCompMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AllAdjToCompMember" xlink:to="lab_ecd_AllAdjToCompMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancingReceivableDelinquentModifiedinPrevious12MonthsMember_1ba1c4bb-387a-48c9-b7e1-49115dbcf776_terseLabel_en-US" xlink:label="lab_ago_FinancingReceivableDelinquentModifiedinPrevious12MonthsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current but recently delinquent</link:label>
    <link:label id="lab_ago_FinancingReceivableDelinquentModifiedinPrevious12MonthsMember_label_en-US" xlink:label="lab_ago_FinancingReceivableDelinquentModifiedinPrevious12MonthsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Receivable, Delinquent/Modified in Previous 12 Months [Member]</link:label>
    <link:label id="lab_ago_FinancingReceivableDelinquentModifiedinPrevious12MonthsMember_documentation_en-US" xlink:label="lab_ago_FinancingReceivableDelinquentModifiedinPrevious12MonthsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financing Receivable, Delinquent/Modified in Previous 12 Months [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancingReceivableDelinquentModifiedinPrevious12MonthsMember" xlink:href="ago-20240630.xsd#ago_FinancingReceivableDelinquentModifiedinPrevious12MonthsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancingReceivableDelinquentModifiedinPrevious12MonthsMember" xlink:to="lab_ago_FinancingReceivableDelinquentModifiedinPrevious12MonthsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_VariableInterestEntityAssetsMember_2386f8a2-1a6b-4ee2-b8ba-05b12bd86618_terseLabel_en-US" xlink:label="lab_ago_VariableInterestEntityAssetsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">FG&#160;VIEs&#8217; Assets</link:label>
    <link:label id="lab_ago_VariableInterestEntityAssetsMember_label_en-US" xlink:label="lab_ago_VariableInterestEntityAssetsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable Interest Entity, Assets [Member]</link:label>
    <link:label id="lab_ago_VariableInterestEntityAssetsMember_documentation_en-US" xlink:label="lab_ago_VariableInterestEntityAssetsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the consolidated variable interest entity's assets included in the reporting entity's statement of financial position at fair value.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_VariableInterestEntityAssetsMember" xlink:href="ago-20240630.xsd#ago_VariableInterestEntityAssetsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_VariableInterestEntityAssetsMember" xlink:to="lab_ago_VariableInterestEntityAssetsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_a34a4810-91ed-4177-9f2d-d9d3d5510b7d_terseLabel_en-US" xlink:label="lab_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]</link:label>
    <link:label id="lab_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_label_en-US" xlink:label="lab_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems" xlink:to="lab_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_15c60899-ce50-41c4-b12e-f394f38b34c6_terseLabel_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Commitments and Contingencies Disclosure [Abstract]</link:label>
    <link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commitments and Contingencies Disclosure [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_LegalEntityAxis_fb62ba6a-3261-4723-9534-ea3d27af85b7_terseLabel_en-US" xlink:label="lab_dei_LegalEntityAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Legal Entity [Axis]</link:label>
    <link:label id="lab_dei_LegalEntityAxis_label_en-US" xlink:label="lab_dei_LegalEntityAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Legal Entity [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_LegalEntityAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_LegalEntityAxis" xlink:to="lab_dei_LegalEntityAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountYearTwo_388af5b0-af12-4abf-9ee8-f5925b8f21bb_terseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountYearTwo" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2026</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountYearTwo_label_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountYearTwo" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Principal Amount, Year Two</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountYearTwo_documentation_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountYearTwo" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Principal Amount, Year Two</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountYearTwo" xlink:href="ago-20240630.xsd#ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountYearTwo"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountYearTwo" xlink:to="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountYearTwo" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsConditionalDefaultRatePlateau_47d709fe-e31d-4df1-89cb-d6850a1cf1ea_verboseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsConditionalDefaultRatePlateau" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Plateau CDR</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsConditionalDefaultRatePlateau_label_en-US" xlink:label="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsConditionalDefaultRatePlateau" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Projected Loss Assumptions, Conditional Default Rate, Plateau</link:label>
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    <link:label id="lab_ago_RepaymentofWarehouseLoansandEquity_61ff2b64-2e27-4fe7-a52b-0183f7075e8d_negatedTerseLabel_en-US" xlink:label="lab_ago_RepaymentofWarehouseLoansandEquity" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Repayment of warehouse financing debt</link:label>
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    <link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_d6f7b73e-33db-4aa6-866f-995594ec1765_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Liabilities</link:label>
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    <link:label id="lab_us-gaap_EmployeeBenefitsAndShareBasedCompensation_c0cbee45-23d7-4849-9264-5f3f80e6f860_terseLabel_en-US" xlink:label="lab_us-gaap_EmployeeBenefitsAndShareBasedCompensation" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Employee compensation and benefit expenses</link:label>
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    <link:label id="lab_us-gaap_EstimateOfFairValueFairValueDisclosureMember_48ecdf08-6184-4854-94e6-34bcae2bef7b_terseLabel_en-US" xlink:label="lab_us-gaap_EstimateOfFairValueFairValueDisclosureMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated Fair Value</link:label>
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    <link:label id="lab_ago_LiabilityforUnpaidClaimsandClaimsAdjustmentExpenseNetofReinsuranceandSalvageSubrogationandOtherRecoveries_431ab92f-63ce-4abc-a47b-107ad70e3fdc_terseLabel_en-US" xlink:label="lab_ago_LiabilityforUnpaidClaimsandClaimsAdjustmentExpenseNetofReinsuranceandSalvageSubrogationandOtherRecoveries" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
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    <link:label id="lab_us-gaap_NetInvestmentIncome_c1470885-7e5a-4ae7-8896-142a2a34f76e_terseLabel_en-US" xlink:label="lab_us-gaap_NetInvestmentIncome" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net investment income</link:label>
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    <link:label id="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock_8bdb212f-89fc-403e-916f-9d45a5314ea0_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fixed Maturity Securities and Short Term Investments by Security Type</link:label>
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    <link:label id="lab_ago_InsuredFinancialObligationsOutstandingPrincipalAmountNet_747b96cd-86dc-4c70-b9b3-33166a036c15_verboseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsOutstandingPrincipalAmountNet" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Net par outstanding</link:label>
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    <link:label id="lab_ago_InsuredFinancialObligationsOutstandingPrincipalAmountNet_d6fc36ab-2610-4405-947b-be760e503aca_totalLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsOutstandingPrincipalAmountNet" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
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    <link:label id="lab_ago_PaydownOfFinancialGuarantyVariableInterestEntitiesLiabilities_c91544a4-3582-4d37-aae7-b6c90bb59fc4_negatedLabel_en-US" xlink:label="lab_ago_PaydownOfFinancialGuarantyVariableInterestEntitiesLiabilities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Net paydowns of financial guaranty variable interest entities&#8217; liabilities</link:label>
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    <link:label id="lab_us-gaap_EarningsPerShareTextBlock_688e8db5-5a6d-46fd-bda6-45e46790cf3b_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Earnings Per Share</link:label>
    <link:label id="lab_us-gaap_EarningsPerShareTextBlock_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings Per Share [Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EarningsPerShareTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareTextBlock" xlink:to="lab_us-gaap_EarningsPerShareTextBlock" xlink:type="arc" order="1"/>
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    <link:label id="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_label_en-US" xlink:label="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]</link:label>
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    <link:label id="lab_us-gaap_SubsequentEventMember_a53bca12-e24d-4bb7-8156-1a3708ea8a5e_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subsequent Event</link:label>
    <link:label id="lab_us-gaap_SubsequentEventMember_label_en-US" xlink:label="lab_us-gaap_SubsequentEventMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsequent Event [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventMember" xlink:to="lab_us-gaap_SubsequentEventMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithoutCreditImpairmentTax_63322001-4242-40a5-a4df-90e222bcf515_terseLabel_en-US" xlink:label="lab_ago_OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithoutCreditImpairmentTax" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investments with no credit impairment, tax</link:label>
    <link:label id="lab_ago_OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithoutCreditImpairmentTax_label_en-US" xlink:label="lab_ago_OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithoutCreditImpairmentTax" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), Available-for-sale Securities, Without Credit Impairment, Tax</link:label>
    <link:label id="lab_ago_OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithoutCreditImpairmentTax_documentation_en-US" xlink:label="lab_ago_OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithoutCreditImpairmentTax" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), Available-for-sale Securities, Without Credit Impairment, Tax</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithoutCreditImpairmentTax" xlink:href="ago-20240630.xsd#ago_OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithoutCreditImpairmentTax"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithoutCreditImpairmentTax" xlink:to="lab_ago_OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithoutCreditImpairmentTax" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_PeerGroupIssuersFnTextBlock_terseLabel_en-US" xlink:label="lab_ecd_PeerGroupIssuersFnTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Peer Group Issuers, Footnote</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_PeerGroupIssuersFnTextBlock" xlink:to="lab_ecd_PeerGroupIssuersFnTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_OtherIncome_b549b6d8-3561-4032-b519-80a661c34137_terseLabel_en-US" xlink:label="lab_us-gaap_OtherIncome" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other income (loss)</link:label>
    <link:label id="lab_us-gaap_OtherIncome_label_en-US" xlink:label="lab_us-gaap_OtherIncome" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Income</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherIncome" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherIncome"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherIncome" xlink:to="lab_us-gaap_OtherIncome" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_SegmentDomain_589197e9-47a3-40fa-8f32-2e7a57b5f4b0_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Segments [Domain]</link:label>
    <link:label id="lab_us-gaap_SegmentDomain_label_en-US" xlink:label="lab_us-gaap_SegmentDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segments [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SegmentDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="lab_us-gaap_SegmentDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_CreditRiskDerivativesAtFairValueBeforeEffectOfCreditSpreadNet_c34e4c67-edfb-4ec6-b2f2-e387055e7794_terseLabel_en-US" xlink:label="lab_ago_CreditRiskDerivativesAtFairValueBeforeEffectOfCreditSpreadNet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair value of credit derivatives before effect of AG credit spread</link:label>
    <link:label id="lab_ago_CreditRiskDerivativesAtFairValueBeforeEffectOfCreditSpreadNet_label_en-US" xlink:label="lab_ago_CreditRiskDerivativesAtFairValueBeforeEffectOfCreditSpreadNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Credit Risk Derivatives at Fair Value before Effect of Credit Spread Net</link:label>
    <link:label id="lab_ago_CreditRiskDerivativesAtFairValueBeforeEffectOfCreditSpreadNet_documentation_en-US" xlink:label="lab_ago_CreditRiskDerivativesAtFairValueBeforeEffectOfCreditSpreadNet" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fair value before effect of credit spread as of the balance sheet date of credit risk derivative assets, net of credit risk derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized on the balance sheet.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_CreditRiskDerivativesAtFairValueBeforeEffectOfCreditSpreadNet" xlink:href="ago-20240630.xsd#ago_CreditRiskDerivativesAtFairValueBeforeEffectOfCreditSpreadNet"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_CreditRiskDerivativesAtFairValueBeforeEffectOfCreditSpreadNet" xlink:to="lab_ago_CreditRiskDerivativesAtFairValueBeforeEffectOfCreditSpreadNet" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_HomeEquityLineOfCreditInsuredMember_ab2eed1e-f4b4-4836-872e-edd91e77fcbe_terseLabel_en-US" xlink:label="lab_ago_HomeEquityLineOfCreditInsuredMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Home Equity Line of Credit Insured</link:label>
    <link:label id="lab_ago_HomeEquityLineOfCreditInsuredMember_label_en-US" xlink:label="lab_ago_HomeEquityLineOfCreditInsuredMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Home Equity Line of Credit Insured [Member]</link:label>
    <link:label id="lab_ago_HomeEquityLineOfCreditInsuredMember_documentation_en-US" xlink:label="lab_ago_HomeEquityLineOfCreditInsuredMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Home Equity Line of Credit Insured</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_HomeEquityLineOfCreditInsuredMember" xlink:href="ago-20240630.xsd#ago_HomeEquityLineOfCreditInsuredMember"/>
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    <link:label id="lab_ago_ScheduleOfNetExpectedLossesToBePaidRecoveredAndNetEconomicDevelopmentBenefitLossTableTextBlock_558e3e5e-3ac4-48e9-aa27-e0bb193c7258_terseLabel_en-US" xlink:label="lab_ago_ScheduleOfNetExpectedLossesToBePaidRecoveredAndNetEconomicDevelopmentBenefitLossTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule Of Net Expected Losses To Be Paid (Recovered) And Net Economic Development (Benefit) Loss</link:label>
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    <link:label id="lab_ago_FinancialGuarantyInsuranceTextBlock_f82ec3a3-f870-4fbe-8fca-19b9c49b32c9_terseLabel_en-US" xlink:label="lab_ago_FinancialGuarantyInsuranceTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contracts Accounted for as Insurance</link:label>
    <link:label id="lab_ago_FinancialGuarantyInsuranceTextBlock_label_en-US" xlink:label="lab_ago_FinancialGuarantyInsuranceTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guaranty Insurance [Text Block]</link:label>
    <link:label id="lab_ago_FinancialGuarantyInsuranceTextBlock_documentation_en-US" xlink:label="lab_ago_FinancialGuarantyInsuranceTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financial Guaranty Insurance [Text Block]</link:label>
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    <link:label id="lab_us-gaap_FairValueOptionChangesInFairValueGainLoss1_ab351873-cd25-4494-aac6-c4979326088b_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueOptionChangesInFairValueGainLoss1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair value gains (losses) on FG VIEs</link:label>
    <link:label id="lab_us-gaap_FairValueOptionChangesInFairValueGainLoss1_label_en-US" xlink:label="lab_us-gaap_FairValueOptionChangesInFairValueGainLoss1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Option, Changes in Fair Value, Gain (Loss)</link:label>
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    <link:label id="lab_ecd_PeoMember_terseLabel_en-US" xlink:label="lab_ecd_PeoMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">PEO</link:label>
    <link:label id="lab_ecd_PeoMember_label_en-US" xlink:label="lab_ecd_PeoMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">PEO [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_PeoMember" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_PeoMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_PeoMember" xlink:to="lab_ecd_PeoMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_VariableInterestEntityPrimaryBeneficiaryCustodyReceiptsNoticePeriod_4127a531-c0e2-4388-a2c0-f4a542eb34e3_terseLabel_en-US" xlink:label="lab_ago_VariableInterestEntityPrimaryBeneficiaryCustodyReceiptsNoticePeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Custody receipts, notice period</link:label>
    <link:label id="lab_ago_VariableInterestEntityPrimaryBeneficiaryCustodyReceiptsNoticePeriod_label_en-US" xlink:label="lab_ago_VariableInterestEntityPrimaryBeneficiaryCustodyReceiptsNoticePeriod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable Interest Entity, Primary Beneficiary, Custody Receipts, Notice Period</link:label>
    <link:label id="lab_ago_VariableInterestEntityPrimaryBeneficiaryCustodyReceiptsNoticePeriod_documentation_en-US" xlink:label="lab_ago_VariableInterestEntityPrimaryBeneficiaryCustodyReceiptsNoticePeriod" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Variable Interest Entity, Primary Beneficiary, Custody Receipts, Notice Period</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_VariableInterestEntityPrimaryBeneficiaryCustodyReceiptsNoticePeriod" xlink:to="lab_ago_VariableInterestEntityPrimaryBeneficiaryCustodyReceiptsNoticePeriod" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_TrdArrIndName_terseLabel_en-US" xlink:label="lab_ecd_TrdArrIndName" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Name</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_TrdArrIndName" xlink:to="lab_ecd_TrdArrIndName" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsClaimLiabilityAbstract_eaa12d9a-bb99-4cbf-9fe3-51eb0e246604_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsClaimLiabilityAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial Guaranty Insurance BIG Transaction Loss Summary</link:label>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsClaimLiabilityAbstract_label_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsClaimLiabilityAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Claim Liability [Line Items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialGuaranteeInsuranceContractsClaimLiabilityAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancialGuaranteeInsuranceContractsClaimLiabilityAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancialGuaranteeInsuranceContractsClaimLiabilityAbstract" xlink:to="lab_us-gaap_FinancialGuaranteeInsuranceContractsClaimLiabilityAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_NoncashOrPartNoncashAcquisitionInvestmentsAcquiredAvailableForSale_84f59f48-3a10-44cd-82d5-55266c0911e1_negatedTerseLabel_en-US" xlink:label="lab_ago_NoncashOrPartNoncashAcquisitionInvestmentsAcquiredAvailableForSale" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Fixed-maturity securities, available-for-sale, received as salvage</link:label>
    <link:label id="lab_ago_NoncashOrPartNoncashAcquisitionInvestmentsAcquiredAvailableForSale_label_en-US" xlink:label="lab_ago_NoncashOrPartNoncashAcquisitionInvestmentsAcquiredAvailableForSale" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Noncash or Part Noncash Acquisition, Investments Acquired, Available-for-sale</link:label>
    <link:label id="lab_ago_NoncashOrPartNoncashAcquisitionInvestmentsAcquiredAvailableForSale_documentation_en-US" xlink:label="lab_ago_NoncashOrPartNoncashAcquisitionInvestmentsAcquiredAvailableForSale" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Noncash or Part Noncash Acquisition, Investments Acquired, Available-for-sale</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_NoncashOrPartNoncashAcquisitionInvestmentsAcquiredAvailableForSale" xlink:href="ago-20240630.xsd#ago_NoncashOrPartNoncashAcquisitionInvestmentsAcquiredAvailableForSale"/>
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    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditRiskDerivativeLiabilitiesAtFairValue" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CreditRiskDerivativeLiabilitiesAtFairValue"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CreditRiskDerivativeLiabilitiesAtFairValue" xlink:to="lab_us-gaap_CreditRiskDerivativeLiabilitiesAtFairValue" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue_c563a4d4-0825-47bb-98f5-efc083de1fcb_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Due after one year through five years</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_AggtErrCompAmt_terseLabel_en-US" xlink:label="lab_ecd_AggtErrCompAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Aggregate Erroneous Compensation Amount</link:label>
    <link:label id="lab_ecd_AggtErrCompAmt_label_en-US" xlink:label="lab_ecd_AggtErrCompAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Aggregate Erroneous Compensation Amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AggtErrCompAmt" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_AggtErrCompAmt"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AggtErrCompAmt" xlink:to="lab_ecd_AggtErrCompAmt" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_MeasurementInputRevenueMultipleMember_d3d9e4a2-aedc-4b4e-bcf7-d1130aad77eb_terseLabel_en-US" xlink:label="lab_us-gaap_MeasurementInputRevenueMultipleMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Measurement input, revenue multiple</link:label>
    <link:label id="lab_us-gaap_MeasurementInputRevenueMultipleMember_label_en-US" xlink:label="lab_us-gaap_MeasurementInputRevenueMultipleMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Measurement Input, Revenue Multiple [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputRevenueMultipleMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MeasurementInputRevenueMultipleMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MeasurementInputRevenueMultipleMember" xlink:to="lab_us-gaap_MeasurementInputRevenueMultipleMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_AverageTermOfCreditRiskDerivatives1_1f5299d3-b67f-4ff6-ba43-9ea7cae27e44_terseLabel_en-US" xlink:label="lab_us-gaap_AverageTermOfCreditRiskDerivatives1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated remaining weighted average life of credit derivatives (in years)</link:label>
    <link:label id="lab_us-gaap_AverageTermOfCreditRiskDerivatives1_label_en-US" xlink:label="lab_us-gaap_AverageTermOfCreditRiskDerivatives1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Average Term of Credit Risk Derivatives</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AverageTermOfCreditRiskDerivatives1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AverageTermOfCreditRiskDerivatives1"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AverageTermOfCreditRiskDerivatives1" xlink:to="lab_us-gaap_AverageTermOfCreditRiskDerivatives1" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_DerivativeCreditRiskValuationAdjustmentDerivativeLiabilities_18c67c98-d18c-4612-bfb6-99551daa4255_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeCreditRiskValuationAdjustmentDerivativeLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plus: Effect of AG credit spread</link:label>
    <link:label id="lab_us-gaap_DerivativeCreditRiskValuationAdjustmentDerivativeLiabilities_label_en-US" xlink:label="lab_us-gaap_DerivativeCreditRiskValuationAdjustmentDerivativeLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Credit Risk Valuation Adjustment, Derivative Liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeCreditRiskValuationAdjustmentDerivativeLiabilities" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeCreditRiskValuationAdjustmentDerivativeLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeCreditRiskValuationAdjustmentDerivativeLiabilities" xlink:to="lab_us-gaap_DerivativeCreditRiskValuationAdjustmentDerivativeLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_PuertoRicoDefaultedExposuresSubjectToAPlanSupportAgreementMember_9aa83ab6-7443-4385-aa62-2f2c616ede10_terseLabel_en-US" xlink:label="lab_ago_PuertoRicoDefaultedExposuresSubjectToAPlanSupportAgreementMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Puerto Rico Defaulted Exposures Subject to a Plan Support Agreement</link:label>
    <link:label id="lab_ago_PuertoRicoDefaultedExposuresSubjectToAPlanSupportAgreementMember_label_en-US" xlink:label="lab_ago_PuertoRicoDefaultedExposuresSubjectToAPlanSupportAgreementMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Puerto Rico Defaulted Exposures Subject to a Plan Support Agreement [Member]</link:label>
    <link:label id="lab_ago_PuertoRicoDefaultedExposuresSubjectToAPlanSupportAgreementMember_documentation_en-US" xlink:label="lab_ago_PuertoRicoDefaultedExposuresSubjectToAPlanSupportAgreementMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Puerto Rico Defaulted Exposures Subject to a Plan Support Agreement</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_PuertoRicoDefaultedExposuresSubjectToAPlanSupportAgreementMember" xlink:href="ago-20240630.xsd#ago_PuertoRicoDefaultedExposuresSubjectToAPlanSupportAgreementMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_PuertoRicoDefaultedExposuresSubjectToAPlanSupportAgreementMember" xlink:to="lab_ago_PuertoRicoDefaultedExposuresSubjectToAPlanSupportAgreementMember" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_LocalPhoneNumber_0f87e00f-b707-44e5-87f5-f507fa7938df_terseLabel_en-US" xlink:label="lab_dei_LocalPhoneNumber" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Local Phone Number</link:label>
    <link:label id="lab_dei_LocalPhoneNumber_label_en-US" xlink:label="lab_dei_LocalPhoneNumber" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Local Phone Number</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_LocalPhoneNumber"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_LocalPhoneNumber" xlink:to="lab_dei_LocalPhoneNumber" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_AggtErrCompNotYetDeterminedTextBlock_terseLabel_en-US" xlink:label="lab_ecd_AggtErrCompNotYetDeterminedTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Aggregate Erroneous Compensation Not Yet Determined</link:label>
    <link:label id="lab_ecd_AggtErrCompNotYetDeterminedTextBlock_label_en-US" xlink:label="lab_ecd_AggtErrCompNotYetDeterminedTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Aggregate Erroneous Compensation Not Yet Determined [Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AggtErrCompNotYetDeterminedTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_AggtErrCompNotYetDeterminedTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AggtErrCompNotYetDeterminedTextBlock" xlink:to="lab_ecd_AggtErrCompNotYetDeterminedTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ScheduleofCreditDerivativeInstrumentsNetChangeinFairValueTableTextBlock_777e8552-c47e-437c-adfc-24a2beeb5a51_terseLabel_en-US" xlink:label="lab_ago_ScheduleofCreditDerivativeInstrumentsNetChangeinFairValueTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net Change in Fair Value of Credit Derivatives</link:label>
    <link:label id="lab_ago_ScheduleofCreditDerivativeInstrumentsNetChangeinFairValueTableTextBlock_label_en-US" xlink:label="lab_ago_ScheduleofCreditDerivativeInstrumentsNetChangeinFairValueTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Credit Derivative Instruments, Net Change in Fair Value [Table Text Block]</link:label>
    <link:label id="lab_ago_ScheduleofCreditDerivativeInstrumentsNetChangeinFairValueTableTextBlock_documentation_en-US" xlink:label="lab_ago_ScheduleofCreditDerivativeInstrumentsNetChangeinFairValueTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule of Credit Derivative Instruments, Net Change in Fair Value [Table Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ScheduleofCreditDerivativeInstrumentsNetChangeinFairValueTableTextBlock" xlink:href="ago-20240630.xsd#ago_ScheduleofCreditDerivativeInstrumentsNetChangeinFairValueTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ScheduleofCreditDerivativeInstrumentsNetChangeinFairValueTableTextBlock" xlink:to="lab_ago_ScheduleofCreditDerivativeInstrumentsNetChangeinFairValueTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ScheduleofGeographicExposureofNetParOutstandingTableTextBlock_84cddc36-6f2a-40d9-ae72-81ee92f1f63e_terseLabel_en-US" xlink:label="lab_ago_ScheduleofGeographicExposureofNetParOutstandingTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Geographic Exposure of Net Par Outstanding</link:label>
    <link:label id="lab_ago_ScheduleofGeographicExposureofNetParOutstandingTableTextBlock_label_en-US" xlink:label="lab_ago_ScheduleofGeographicExposureofNetParOutstandingTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Geographic Exposure of Net Par Outstanding [Table Text Block]</link:label>
    <link:label id="lab_ago_ScheduleofGeographicExposureofNetParOutstandingTableTextBlock_documentation_en-US" xlink:label="lab_ago_ScheduleofGeographicExposureofNetParOutstandingTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule of Geographic Exposure of Net Par Outstanding [Table Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ScheduleofGeographicExposureofNetParOutstandingTableTextBlock" xlink:href="ago-20240630.xsd#ago_ScheduleofGeographicExposureofNetParOutstandingTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ScheduleofGeographicExposureofNetParOutstandingTableTextBlock" xlink:to="lab_ago_ScheduleofGeographicExposureofNetParOutstandingTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinFourthFullFiscalYear_d32b510e-2f43-4ca3-af3c-a0897727303f_terseLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinFourthFullFiscalYear" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2028</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinFourthFullFiscalYear_label_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinFourthFullFiscalYear" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Future Expected, Net Loss to be Expensed in Fourth Full Fiscal Year</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinFourthFullFiscalYear_documentation_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinFourthFullFiscalYear" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">For financial guarantee insurance contracts, the amount of net loss expected to be expensed within the fourth full fiscal year following the date of the latest balance sheet presented in the financial statements.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinFourthFullFiscalYear" xlink:href="ago-20240630.xsd#ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinFourthFullFiscalYear"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinFourthFullFiscalYear" xlink:to="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinFourthFullFiscalYear" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuaranteeInsurancePremiumsLineItems_30322943-0a3a-4d3c-9613-3589986f34f9_terseLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeInsurancePremiumsLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Premiums [Line Items]</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsurancePremiumsLineItems_label_en-US" xlink:label="lab_ago_FinancialGuaranteeInsurancePremiumsLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Premiums [Line Items]</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsurancePremiumsLineItems_documentation_en-US" xlink:label="lab_ago_FinancialGuaranteeInsurancePremiumsLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">[Line Items] for Financial Guarantee Insurance Premiums [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuaranteeInsurancePremiumsLineItems" xlink:href="ago-20240630.xsd#ago_FinancialGuaranteeInsurancePremiumsLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuaranteeInsurancePremiumsLineItems" xlink:to="lab_ago_FinancialGuaranteeInsurancePremiumsLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InternalNoninvestmentGradeLevel2Member_f7ab13ec-85ac-4fb8-872c-33b979b9c7d2_terseLabel_en-US" xlink:label="lab_ago_InternalNoninvestmentGradeLevel2Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">BIG&#160;2</link:label>
    <link:label id="lab_ago_InternalNoninvestmentGradeLevel2Member_label_en-US" xlink:label="lab_ago_InternalNoninvestmentGradeLevel2Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Internal Noninvestment Grade, Level 2 [Member]</link:label>
    <link:label id="lab_ago_InternalNoninvestmentGradeLevel2Member_documentation_en-US" xlink:label="lab_ago_InternalNoninvestmentGradeLevel2Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the below investment grade transactions for which lifetime losses are expected but for which no claims (other than liquidity claims) have yet been paid.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InternalNoninvestmentGradeLevel2Member" xlink:href="ago-20240630.xsd#ago_InternalNoninvestmentGradeLevel2Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InternalNoninvestmentGradeLevel2Member" xlink:to="lab_ago_InternalNoninvestmentGradeLevel2Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_GainContingencyAllegationsPaymentForTerminationofOtherCreditDerivativeTransactionsOwedbyPlaintifftoDefendantAsPerCalculationofDefendant_07ab6c1d-04e0-4fb2-bf04-f1090c1de478_terseLabel_en-US" xlink:label="lab_ago_GainContingencyAllegationsPaymentForTerminationofOtherCreditDerivativeTransactionsOwedbyPlaintifftoDefendantAsPerCalculationofDefendant" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other credit derivative transactions which LBIE owes to AG Financial Products as per calculation of AG financial products</link:label>
    <link:label id="lab_ago_GainContingencyAllegationsPaymentForTerminationofOtherCreditDerivativeTransactionsOwedbyPlaintifftoDefendantAsPerCalculationofDefendant_label_en-US" xlink:label="lab_ago_GainContingencyAllegationsPaymentForTerminationofOtherCreditDerivativeTransactionsOwedbyPlaintifftoDefendantAsPerCalculationofDefendant" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gain Contingency, Allegations, Payment For Termination of Other Credit Derivative Transactions Owed by Plaintiff to Defendant As Per Calculation of Defendant</link:label>
    <link:label id="lab_ago_GainContingencyAllegationsPaymentForTerminationofOtherCreditDerivativeTransactionsOwedbyPlaintifftoDefendantAsPerCalculationofDefendant_documentation_en-US" xlink:label="lab_ago_GainContingencyAllegationsPaymentForTerminationofOtherCreditDerivativeTransactionsOwedbyPlaintifftoDefendantAsPerCalculationofDefendant" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Gain Contingency, Allegations, Payment For Termination of Other Credit Derivative Transactions Owed by Plaintiff to Defendant As Per Calculation of Defendant</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_GainContingencyAllegationsPaymentForTerminationofOtherCreditDerivativeTransactionsOwedbyPlaintifftoDefendantAsPerCalculationofDefendant" xlink:href="ago-20240630.xsd#ago_GainContingencyAllegationsPaymentForTerminationofOtherCreditDerivativeTransactionsOwedbyPlaintifftoDefendantAsPerCalculationofDefendant"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_GainContingencyAllegationsPaymentForTerminationofOtherCreditDerivativeTransactionsOwedbyPlaintifftoDefendantAsPerCalculationofDefendant" xlink:to="lab_ago_GainContingencyAllegationsPaymentForTerminationofOtherCreditDerivativeTransactionsOwedbyPlaintifftoDefendantAsPerCalculationofDefendant" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_PeoTotalCompAmt_terseLabel_en-US" xlink:label="lab_ecd_PeoTotalCompAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">PEO Total Compensation Amount</link:label>
    <link:label id="lab_ecd_PeoTotalCompAmt_label_en-US" xlink:label="lab_ecd_PeoTotalCompAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">PEO Total Compensation Amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_PeoTotalCompAmt" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_PeoTotalCompAmt"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_PeoTotalCompAmt" xlink:to="lab_ecd_PeoTotalCompAmt" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_6ef7c4ad-0f28-49c2-b6c1-1eb0dfc1dce8_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]</link:label>
    <link:label id="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_label_en-US" xlink:label="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" xlink:to="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_HomeEquityLineofCreditandClosedendMortgageMember_69ab2689-4c4a-4e83-9a5a-94d6e73053e1_terseLabel_en-US" xlink:label="lab_ago_HomeEquityLineofCreditandClosedendMortgageMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Home Equity Line of Credit and Closed-end Mortgage</link:label>
    <link:label id="lab_ago_HomeEquityLineofCreditandClosedendMortgageMember_label_en-US" xlink:label="lab_ago_HomeEquityLineofCreditandClosedendMortgageMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Home Equity Line of Credit and Closed-end Mortgage [Member]</link:label>
    <link:label id="lab_ago_HomeEquityLineofCreditandClosedendMortgageMember_documentation_en-US" xlink:label="lab_ago_HomeEquityLineofCreditandClosedendMortgageMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Home Equity Line of Credit and Closed-end Mortgage [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_HomeEquityLineofCreditandClosedendMortgageMember" xlink:href="ago-20240630.xsd#ago_HomeEquityLineofCreditandClosedendMortgageMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_HomeEquityLineofCreditandClosedendMortgageMember" xlink:to="lab_ago_HomeEquityLineofCreditandClosedendMortgageMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearFifteenToEighteen_c42c4512-062a-45f4-a881-8fd5742fbbf3_terseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearFifteenToEighteen" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2039-2041</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearFifteenToEighteen_label_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearFifteenToEighteen" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Principal Amount, Year Fifteen to Eighteen</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearFifteenToEighteen_documentation_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearFifteenToEighteen" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Principal Amount, Year Fifteen to Eighteen</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearFifteenToEighteen" xlink:href="ago-20240630.xsd#ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearFifteenToEighteen"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearFifteenToEighteen" xlink:to="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearFifteenToEighteen" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedDuringRemainderOfFiscalYearFollowingBalanceSheetDate_fe867e50-954d-4efb-bf60-b2185769767f_totalLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedDuringRemainderOfFiscalYearFollowingBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Subtotal 2024</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedDuringRemainderOfFiscalYearFollowingBalanceSheetDate_label_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedDuringRemainderOfFiscalYearFollowingBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Future Expected, Net Loss to be Expensed During Remainder of Fiscal Year Following Balance Sheet Date</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedDuringRemainderOfFiscalYearFollowingBalanceSheetDate_documentation_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedDuringRemainderOfFiscalYearFollowingBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Future Expected, Net Loss to be Expensed During Remainder of Fiscal Year Following Balance Sheet Date</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedDuringRemainderOfFiscalYearFollowingBalanceSheetDate" xlink:href="ago-20240630.xsd#ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedDuringRemainderOfFiscalYearFollowingBalanceSheetDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedDuringRemainderOfFiscalYearFollowingBalanceSheetDate" xlink:to="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedDuringRemainderOfFiscalYearFollowingBalanceSheetDate" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThanThreeAndWithinFourYearsFromBalanceSheetDate_5a7f7741-c26f-4930-a07f-b50e92e78000_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThanThreeAndWithinFourYearsFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2027</link:label>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThanThreeAndWithinFourYearsFromBalanceSheetDate_label_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThanThreeAndWithinFourYearsFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contract, Premium Revenue to be Recognized, Year Four</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThanThreeAndWithinFourYearsFromBalanceSheetDate" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThanThreeAndWithinFourYearsFromBalanceSheetDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThanThreeAndWithinFourYearsFromBalanceSheetDate" xlink:to="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThanThreeAndWithinFourYearsFromBalanceSheetDate" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionFinalConditionalPrepaymentRatesFinalRateTerm_ac0ce767-57ca-464e-8227-d3224adf642d_terseLabel_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionFinalConditionalPrepaymentRatesFinalRateTerm" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Projected loss assumptions, final CPR, period for voluntary prepayments to continue</link:label>
    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionFinalConditionalPrepaymentRatesFinalRateTerm_label_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionFinalConditionalPrepaymentRatesFinalRateTerm" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Projected Loss Assumption, Final Conditional Prepayment Rates, Final Rate, Term</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ago_GuarantorObligationsProjectedLossAssumptionFinalConditionalPrepaymentRatesFinalRateTerm" xlink:href="ago-20240630.xsd#ago_GuarantorObligationsProjectedLossAssumptionFinalConditionalPrepaymentRatesFinalRateTerm"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_GuarantorObligationsProjectedLossAssumptionFinalConditionalPrepaymentRatesFinalRateTerm" xlink:to="lab_ago_GuarantorObligationsProjectedLossAssumptionFinalConditionalPrepaymentRatesFinalRateTerm" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_1097b371-0d29-4a14-ac91-c809123c6f9f_verboseLabel_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss of $69 and $77 (amortized cost of $6,478 and $6,746)</link:label>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_b1c14828-7c14-49b0-9934-e6f1df723b0c_terseLabel_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated Fair Value</link:label>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_a34c7b0b-98bb-4e37-8427-886cde7e2548_netLabel_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xml:lang="en-US">Estimated fair value</link:label>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_label_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-Sale, Excluding Accrued Interest</link:label>
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    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsSalvageandSubrogationRecoveriesNet_094cdadf-c83c-4942-8545-eb92a1b7bc6e_verboseLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsSalvageandSubrogationRecoveriesNet" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Salvage and subrogation recoverable, net</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsSalvageandSubrogationRecoveriesNet_label_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsSalvageandSubrogationRecoveriesNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Salvage and Subrogation Recoveries, Net</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsSalvageandSubrogationRecoveriesNet_documentation_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsSalvageandSubrogationRecoveriesNet" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Salvage and Subrogation Recoveries, Net</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuaranteeInsuranceContractsSalvageandSubrogationRecoveriesNet" xlink:href="ago-20240630.xsd#ago_FinancialGuaranteeInsuranceContractsSalvageandSubrogationRecoveriesNet"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuaranteeInsuranceContractsSalvageandSubrogationRecoveriesNet" xlink:to="lab_ago_FinancialGuaranteeInsuranceContractsSalvageandSubrogationRecoveriesNet" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingInterestNet_33e3cf5f-ad88-4434-bd93-067f31a6984f_terseLabel_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingInterestNet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingInterestNet_label_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingInterestNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations with Credit Deterioration Insured Contractual Payments Outstanding Interest Net</link:label>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingInterestNet_documentation_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingInterestNet" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This element represents the amount of insured contractual payments outstanding attributable to interest accrued on the underlying insured obligations for financial guaranty insurance contracts presented in the context of each surveillance grouping or category used by management to monitor and track potential deterioration in the credit worthiness of the insured party's ability to meet its financial obligations related to the contracts underlying financial guaranty insurance contracts, before adjusting for the effect of consolidating VIEs.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingInterestNet" xlink:href="ago-20240630.xsd#ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingInterestNet"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingInterestNet" xlink:to="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingInterestNet" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_CommonStockMember_97ab75e7-5516-460f-a140-bd041ea50c8f_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common Shares</link:label>
    <link:label id="lab_us-gaap_CommonStockMember_label_en-US" xlink:label="lab_us-gaap_CommonStockMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockMember" xlink:to="lab_us-gaap_CommonStockMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostBasisRollingMaturityAbstract_bae00d4e-94a2-4067-a7fa-b4a2459f2cf8_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostBasisRollingMaturityAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortized Cost</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostBasisRollingMaturityAbstract_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostBasisRollingMaturityAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-Sale, Amortized Cost, Rolling Maturity [Abstract]</link:label>
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    <link:label id="lab_ecd_ForgoneRecoveryDueToExpenseOfEnforcementAmt_terseLabel_en-US" xlink:label="lab_ecd_ForgoneRecoveryDueToExpenseOfEnforcementAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Forgone Recovery due to Expense of Enforcement, Amount</link:label>
    <link:label id="lab_ecd_ForgoneRecoveryDueToExpenseOfEnforcementAmt_label_en-US" xlink:label="lab_ecd_ForgoneRecoveryDueToExpenseOfEnforcementAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Forgone Recovery due to Expense of Enforcement, Amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_ForgoneRecoveryDueToExpenseOfEnforcementAmt" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_ForgoneRecoveryDueToExpenseOfEnforcementAmt"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_ForgoneRecoveryDueToExpenseOfEnforcementAmt" xlink:to="lab_ecd_ForgoneRecoveryDueToExpenseOfEnforcementAmt" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_f4e862a6-9555-4730-a3b5-449ac8e388f7_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value, Liabilities Measured on Recurring Basis</link:label>
    <link:label id="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_label_en-US" xlink:label="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock"/>
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    <link:label id="lab_ago_VariableInterestEntityConsolidatedCarryingAmountLiabilitiesWithoutRecourse_aac2d48c-09c9-4df2-aebe-f22f90b4a626_terseLabel_en-US" xlink:label="lab_ago_VariableInterestEntityConsolidatedCarryingAmountLiabilitiesWithoutRecourse" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial guaranty variable interest entities' liabilities, without recourse</link:label>
    <link:label id="lab_ago_VariableInterestEntityConsolidatedCarryingAmountLiabilitiesWithoutRecourse_label_en-US" xlink:label="lab_ago_VariableInterestEntityConsolidatedCarryingAmountLiabilitiesWithoutRecourse" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable Interest Entity, Consolidated, Carrying Amount, Liabilities, Without Recourse</link:label>
    <link:label id="lab_ago_VariableInterestEntityConsolidatedCarryingAmountLiabilitiesWithoutRecourse_documentation_en-US" xlink:label="lab_ago_VariableInterestEntityConsolidatedCarryingAmountLiabilitiesWithoutRecourse" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Variable Interest Entity, Consolidated, Carrying Amount, Liabilities, Without Recourse</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_VariableInterestEntityConsolidatedCarryingAmountLiabilitiesWithoutRecourse" xlink:to="lab_ago_VariableInterestEntityConsolidatedCarryingAmountLiabilitiesWithoutRecourse" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FairValueOptionLoansHeldasLiabilitiesAggregateDifferenceWithRecourse_e0ceb8b3-384b-4641-bd17-ebc7fa3b4ca1_terseLabel_en-US" xlink:label="lab_ago_FairValueOptionLoansHeldasLiabilitiesAggregateDifferenceWithRecourse" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">FG VIEs&#8217; liabilities with recourse</link:label>
    <link:label id="lab_ago_FairValueOptionLoansHeldasLiabilitiesAggregateDifferenceWithRecourse_label_en-US" xlink:label="lab_ago_FairValueOptionLoansHeldasLiabilitiesAggregateDifferenceWithRecourse" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Option, Loans Held as Liabilities, Aggregate Difference, With Recourse</link:label>
    <link:label id="lab_ago_FairValueOptionLoansHeldasLiabilitiesAggregateDifferenceWithRecourse_documentation_en-US" xlink:label="lab_ago_FairValueOptionLoansHeldasLiabilitiesAggregateDifferenceWithRecourse" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fair Value, Option, Loans Held as Liabilities, Aggregate Difference, With Recourse</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FairValueOptionLoansHeldasLiabilitiesAggregateDifferenceWithRecourse" xlink:href="ago-20240630.xsd#ago_FairValueOptionLoansHeldasLiabilitiesAggregateDifferenceWithRecourse"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FairValueOptionLoansHeldasLiabilitiesAggregateDifferenceWithRecourse" xlink:to="lab_ago_FairValueOptionLoansHeldasLiabilitiesAggregateDifferenceWithRecourse" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_VariableInterestEntityPrimaryBeneficiaryMaximumLossExposureAmount_61e82147-c15b-42ac-a05c-26951cbe6d6b_terseLabel_en-US" xlink:label="lab_us-gaap_VariableInterestEntityPrimaryBeneficiaryMaximumLossExposureAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maximum loss exposure</link:label>
    <link:label id="lab_us-gaap_VariableInterestEntityPrimaryBeneficiaryMaximumLossExposureAmount_label_en-US" xlink:label="lab_us-gaap_VariableInterestEntityPrimaryBeneficiaryMaximumLossExposureAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable Interest Entity, Primary Beneficiary, Maximum Loss Exposure, Amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMaximumLossExposureAmount" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VariableInterestEntityPrimaryBeneficiaryMaximumLossExposureAmount"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMaximumLossExposureAmount" xlink:to="lab_us-gaap_VariableInterestEntityPrimaryBeneficiaryMaximumLossExposureAmount" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_SegmentReportingAbstract_f9fae735-b30b-4eae-8ebe-8e73d5b5af10_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentReportingAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Segment Reporting [Abstract]</link:label>
    <link:label id="lab_us-gaap_SegmentReportingAbstract_label_en-US" xlink:label="lab_us-gaap_SegmentReportingAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segment Reporting [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SegmentReportingAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentReportingAbstract" xlink:to="lab_us-gaap_SegmentReportingAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableSpecialtyInsurance_9d93bb58-8623-4f9e-829b-a70450b943c5_periodStartLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableSpecialtyInsurance" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Less: Specialty insurance premium receivable</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableSpecialtyInsurance_42f64b00-9896-458b-bc27-549c0ba16f68_periodEndLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableSpecialtyInsurance" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Specialty insurance premium receivable</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableSpecialtyInsurance_label_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableSpecialtyInsurance" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Premium Receivable, Specialty Insurance</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableSpecialtyInsurance_documentation_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableSpecialtyInsurance" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Premium Receivable, Specialty Insurance</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableSpecialtyInsurance" xlink:href="ago-20240630.xsd#ago_FinancialGuaranteeInsuranceContractsPremiumReceivableSpecialtyInsurance"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableSpecialtyInsurance" xlink:to="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableSpecialtyInsurance" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityCentralIndexKey_f215b82d-f29a-4007-9c8d-17457727682c_terseLabel_en-US" xlink:label="lab_dei_EntityCentralIndexKey" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Central Index Key</link:label>
    <link:label id="lab_dei_EntityCentralIndexKey_label_en-US" xlink:label="lab_dei_EntityCentralIndexKey" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Central Index Key</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityCentralIndexKey"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityCentralIndexKey" xlink:to="lab_dei_EntityCentralIndexKey" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ScheduleOfRevenueDomesticAndForeignTableTextBlock_c187ba22-857b-44dc-a6ec-3e3017e43035_terseLabel_en-US" xlink:label="lab_ago_ScheduleOfRevenueDomesticAndForeignTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revenue by Tax Jurisdiction</link:label>
    <link:label id="lab_ago_ScheduleOfRevenueDomesticAndForeignTableTextBlock_label_en-US" xlink:label="lab_ago_ScheduleOfRevenueDomesticAndForeignTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Revenue Domestic and Foreign [Table Text Block]</link:label>
    <link:label id="lab_ago_ScheduleOfRevenueDomesticAndForeignTableTextBlock_documentation_en-US" xlink:label="lab_ago_ScheduleOfRevenueDomesticAndForeignTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tabular disclosure of revenue between domestic and foreign jurisdictions.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ScheduleOfRevenueDomesticAndForeignTableTextBlock" xlink:href="ago-20240630.xsd#ago_ScheduleOfRevenueDomesticAndForeignTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ScheduleOfRevenueDomesticAndForeignTableTextBlock" xlink:to="lab_ago_ScheduleOfRevenueDomesticAndForeignTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialInstrumentsSubjecttoMandatoryRedemptionSettlementTermsNumberofCustodialTrusts_b02d111b-bc08-46fb-bd47-69c3feb53af7_terseLabel_en-US" xlink:label="lab_ago_FinancialInstrumentsSubjecttoMandatoryRedemptionSettlementTermsNumberofCustodialTrusts" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of custodial trusts</link:label>
    <link:label id="lab_ago_FinancialInstrumentsSubjecttoMandatoryRedemptionSettlementTermsNumberofCustodialTrusts_label_en-US" xlink:label="lab_ago_FinancialInstrumentsSubjecttoMandatoryRedemptionSettlementTermsNumberofCustodialTrusts" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Number of Custodial Trusts</link:label>
    <link:label id="lab_ago_FinancialInstrumentsSubjecttoMandatoryRedemptionSettlementTermsNumberofCustodialTrusts_documentation_en-US" xlink:label="lab_ago_FinancialInstrumentsSubjecttoMandatoryRedemptionSettlementTermsNumberofCustodialTrusts" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the number of custodial trusts with whom the entity entered into put agreements.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialInstrumentsSubjecttoMandatoryRedemptionSettlementTermsNumberofCustodialTrusts" xlink:href="ago-20240630.xsd#ago_FinancialInstrumentsSubjecttoMandatoryRedemptionSettlementTermsNumberofCustodialTrusts"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialInstrumentsSubjecttoMandatoryRedemptionSettlementTermsNumberofCustodialTrusts" xlink:to="lab_ago_FinancialInstrumentsSubjecttoMandatoryRedemptionSettlementTermsNumberofCustodialTrusts" xlink:type="arc" order="1"/>
    <link:label id="lab_srt_StatementScenarioAxis_0e0f595c-d6bf-4a3e-bdbf-c38e48268c35_terseLabel_en-US" xlink:label="lab_srt_StatementScenarioAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Scenario [Axis]</link:label>
    <link:label id="lab_srt_StatementScenarioAxis_label_en-US" xlink:label="lab_srt_StatementScenarioAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Scenario [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementScenarioAxis" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_StatementScenarioAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_StatementScenarioAxis" xlink:to="lab_srt_StatementScenarioAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_LossContingencyDamagesSoughtValue_83fd1a4f-fecc-4f5b-9a40-9680f53572f6_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingencyDamagesSoughtValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Damages sought</link:label>
    <link:label id="lab_us-gaap_LossContingencyDamagesSoughtValue_label_en-US" xlink:label="lab_us-gaap_LossContingencyDamagesSoughtValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Contingency, Damages Sought, Value</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyDamagesSoughtValue" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LossContingencyDamagesSoughtValue"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingencyDamagesSoughtValue" xlink:to="lab_us-gaap_LossContingencyDamagesSoughtValue" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_NonCreditImpairmentRelatedUnrealizedFairValueGainsLossesOnCreditDerivativesMember_93b087fc-6075-4813-84c4-e6ee2265de24_terseLabel_en-US" xlink:label="lab_ago_NonCreditImpairmentRelatedUnrealizedFairValueGainsLossesOnCreditDerivativesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-credit impairment-related unrealized fair value gains (losses) on credit derivatives</link:label>
    <link:label id="lab_ago_NonCreditImpairmentRelatedUnrealizedFairValueGainsLossesOnCreditDerivativesMember_label_en-US" xlink:label="lab_ago_NonCreditImpairmentRelatedUnrealizedFairValueGainsLossesOnCreditDerivativesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-credit Impairment-related Unrealized Fair Value Gains (Losses) on Credit Derivatives [Member]</link:label>
    <link:label id="lab_ago_NonCreditImpairmentRelatedUnrealizedFairValueGainsLossesOnCreditDerivativesMember_documentation_en-US" xlink:label="lab_ago_NonCreditImpairmentRelatedUnrealizedFairValueGainsLossesOnCreditDerivativesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Non-credit Impairment-related Unrealized Fair Value Gains (Losses) on Credit Derivatives</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_NonCreditImpairmentRelatedUnrealizedFairValueGainsLossesOnCreditDerivativesMember" xlink:href="ago-20240630.xsd#ago_NonCreditImpairmentRelatedUnrealizedFairValueGainsLossesOnCreditDerivativesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_NonCreditImpairmentRelatedUnrealizedFairValueGainsLossesOnCreditDerivativesMember" xlink:to="lab_ago_NonCreditImpairmentRelatedUnrealizedFairValueGainsLossesOnCreditDerivativesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesAccretionOfDiscount_bc0583e3-fc97-463d-96b7-b0f4a2b10b63_terseLabel_en-US" xlink:label="lab_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesAccretionOfDiscount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accretion of discount</link:label>
    <link:label id="lab_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesAccretionOfDiscount_label_en-US" xlink:label="lab_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesAccretionOfDiscount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Net Expected Loss Development After Recoveries for Representations and Warranties, Accretion Of Discount</link:label>
    <link:label id="lab_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesAccretionOfDiscount_documentation_en-US" xlink:label="lab_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesAccretionOfDiscount" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Net Expected Loss Development After Recoveries for Representations and Warranties, Accretion Of Discount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesAccretionOfDiscount" xlink:href="ago-20240630.xsd#ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesAccretionOfDiscount"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesAccretionOfDiscount" xlink:to="lab_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesAccretionOfDiscount" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_AccumulatedTranslationAdjustmentMember_47213ccf-5eee-460c-98ab-55ad7e63e0f7_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedTranslationAdjustmentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cumulative Translation Adjustment</link:label>
    <link:label id="lab_us-gaap_AccumulatedTranslationAdjustmentMember_label_en-US" xlink:label="lab_us-gaap_AccumulatedTranslationAdjustmentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Foreign Currency Adjustment Attributable to Parent [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedTranslationAdjustmentMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccumulatedTranslationAdjustmentMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedTranslationAdjustmentMember" xlink:to="lab_us-gaap_AccumulatedTranslationAdjustmentMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetEarnedPremiumtobeRecognized_0e69425d-bdcb-4754-af48-3e82e72c5072_totalLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetEarnedPremiumtobeRecognized" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total future net earned premiums</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetEarnedPremiumtobeRecognized_label_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetEarnedPremiumtobeRecognized" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Future Expected Net Earned Premium to be Recognized</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetEarnedPremiumtobeRecognized_documentation_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetEarnedPremiumtobeRecognized" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">For financial guarantee insurance contracts, the undiscounted amount of premium revenue expected to be recognized over the term of the contract period.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetEarnedPremiumtobeRecognized" xlink:href="ago-20240630.xsd#ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetEarnedPremiumtobeRecognized"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetEarnedPremiumtobeRecognized" xlink:to="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetEarnedPremiumtobeRecognized" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSalePurchasedWithCreditDeteriorationAmountAtPurchasePrice_3634a230-bb04-4e35-b42f-486efab00081_terseLabel_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSalePurchasedWithCreditDeteriorationAmountAtPurchasePrice" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Securities purchased with credit deterioration</link:label>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSalePurchasedWithCreditDeteriorationAmountAtPurchasePrice_label_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSalePurchasedWithCreditDeteriorationAmountAtPurchasePrice" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-Sale, Purchased with Credit Deterioration, Amount at Purchase Price</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSalePurchasedWithCreditDeteriorationAmountAtPurchasePrice" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSalePurchasedWithCreditDeteriorationAmountAtPurchasePrice"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSalePurchasedWithCreditDeteriorationAmountAtPurchasePrice" xlink:to="lab_us-gaap_DebtSecuritiesAvailableForSalePurchasedWithCreditDeteriorationAmountAtPurchasePrice" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_NonPeoNeoAvgCompActuallyPaidAmt_terseLabel_en-US" xlink:label="lab_ecd_NonPeoNeoAvgCompActuallyPaidAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-PEO NEO Average Compensation Actually Paid Amount</link:label>
    <link:label id="lab_ecd_NonPeoNeoAvgCompActuallyPaidAmt_label_en-US" xlink:label="lab_ecd_NonPeoNeoAvgCompActuallyPaidAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-PEO NEO Average Compensation Actually Paid Amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_NonPeoNeoAvgCompActuallyPaidAmt" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_NonPeoNeoAvgCompActuallyPaidAmt"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_NonPeoNeoAvgCompActuallyPaidAmt" xlink:to="lab_ecd_NonPeoNeoAvgCompActuallyPaidAmt" xlink:type="arc" order="1"/>
    <link:label id="lab_sic_Z3721_2fcf8903-81cf-4ce3-a34a-126380b1a3a6_terseLabel_en-US" xlink:label="lab_sic_Z3721" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Aircraft residual value insurance (RVI)</link:label>
    <link:label id="lab_sic_Z3721_55eef020-f765-438f-be7d-e7f89309febc_verboseLabel_en-US" xlink:label="lab_sic_Z3721" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Aircraft residual value insurance</link:label>
    <link:label id="lab_sic_Z3721_label_en-US" xlink:label="lab_sic_Z3721" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">3721 Aircraft [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_sic_Z3721" xlink:href="https://xbrl.sec.gov/sic/2024/sic-2024.xsd#sic_Z3721"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_sic_Z3721" xlink:to="lab_sic_Z3721" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_ba351a6c-c6db-4af4-9d3e-b5ec270d3b65_terseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Shareholders' Equity</link:label>
    <link:label id="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity [Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquityNoteDisclosureTextBlock"/>
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    <link:label id="lab_us-gaap_FinancialInstrumentAxis_7704ef87-bd0b-4e73-b22b-e08dd4db8e68_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialInstrumentAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial Instrument [Axis]</link:label>
    <link:label id="lab_us-gaap_FinancialInstrumentAxis_label_en-US" xlink:label="lab_us-gaap_FinancialInstrumentAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Instrument [Axis]</link:label>
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    <link:label id="lab_us-gaap_SegmentReportingDisclosureTextBlock_label_en-US" xlink:label="lab_us-gaap_SegmentReportingDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segment Reporting Disclosure [Text Block]</link:label>
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    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationGrossClaimLiabilityNetOfReinsurance_2de771ba-a5c4-43b0-b5a3-bfea75128723_verboseLabel_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationGrossClaimLiabilityNetOfReinsurance" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationGrossClaimLiabilityNetOfReinsurance" xlink:href="ago-20240630.xsd#ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationGrossClaimLiabilityNetOfReinsurance"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationGrossClaimLiabilityNetOfReinsurance" xlink:to="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationGrossClaimLiabilityNetOfReinsurance" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueByMeasurementBasisAxis_4642b5ec-5d6f-461b-aa03-7c56cda6964f_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueByMeasurementBasisAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value, by Balance Sheet Grouping, Disclosure Item Amounts [Axis]</link:label>
    <link:label id="lab_us-gaap_FairValueByMeasurementBasisAxis_label_en-US" xlink:label="lab_us-gaap_FairValueByMeasurementBasisAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Measurement Basis [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
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    <link:label id="lab_ago_FinancingReceivablePeriodPastDueDomain_73eb7046-d340-4971-aac5-8d70936393a6_terseLabel_en-US" xlink:label="lab_ago_FinancingReceivablePeriodPastDueDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financing Receivable, Period Past Due [Domain]</link:label>
    <link:label id="lab_ago_FinancingReceivablePeriodPastDueDomain_label_en-US" xlink:label="lab_ago_FinancingReceivablePeriodPastDueDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Receivable, Period Past Due [Domain]</link:label>
    <link:label id="lab_ago_FinancingReceivablePeriodPastDueDomain_documentation_en-US" xlink:label="lab_ago_FinancingReceivablePeriodPastDueDomain" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">[Domain] for Information by period in which financing receivables are past due.</link:label>
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    <link:label id="lab_ecd_TrdArrIndTitle_terseLabel_en-US" xlink:label="lab_ecd_TrdArrIndTitle" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Title</link:label>
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    <link:label id="lab_us-gaap_DeferredCompensationShareBasedPaymentsMember_504c6626-ab09-4ee6-86d2-fc4a9243735d_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredCompensationShareBasedPaymentsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred Equity Compensation</link:label>
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    <link:label id="lab_srt_ConsolidatedEntitiesAxis_901379b7-f647-45cf-a131-decc3d6f60ab_terseLabel_en-US" xlink:label="lab_srt_ConsolidatedEntitiesAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Consolidated Entities [Axis]</link:label>
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    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsLiquidationRate_698a7cc7-8a61-473c-b678-fc14742ce24a_terseLabel_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsLiquidationRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Liquidation rate</link:label>
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    <link:label id="lab_us-gaap_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock_e56a372d-b4b4-4796-b965-117b04db8e66_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pretax Income (Loss) by Tax Jurisdiction</link:label>
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    <link:label id="lab_ago_ConsolidatedInvestmentVehiclesMember_0c10087d-54c7-4bb2-be23-b5aec58aec60_terseLabel_en-US" xlink:label="lab_ago_ConsolidatedInvestmentVehiclesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Consolidated Investment Vehicles</link:label>
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    <link:label id="lab_ago_IncomeTaxExpenseBenefitMember_76c229d5-2b6b-48fa-a88c-1b87086196c9_terseLabel_en-US" xlink:label="lab_ago_IncomeTaxExpenseBenefitMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tax effect</link:label>
    <link:label id="lab_ago_IncomeTaxExpenseBenefitMember_label_en-US" xlink:label="lab_ago_IncomeTaxExpenseBenefitMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Expense (Benefit) [Member]</link:label>
    <link:label id="lab_ago_IncomeTaxExpenseBenefitMember_documentation_en-US" xlink:label="lab_ago_IncomeTaxExpenseBenefitMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Income Tax Expense (Benefit)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_IncomeTaxExpenseBenefitMember" xlink:href="ago-20240630.xsd#ago_IncomeTaxExpenseBenefitMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_IncomeTaxExpenseBenefitMember" xlink:to="lab_ago_IncomeTaxExpenseBenefitMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ConditionalDefaultRatePlateauPeriod_a6f4adeb-07e8-4ca3-ba67-883034614c31_terseLabel_en-US" xlink:label="lab_ago_ConditionalDefaultRatePlateauPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Period of constant conditional default rate (in months)</link:label>
    <link:label id="lab_ago_ConditionalDefaultRatePlateauPeriod_label_en-US" xlink:label="lab_ago_ConditionalDefaultRatePlateauPeriod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Conditional Default Rate Plateau Period</link:label>
    <link:label id="lab_ago_ConditionalDefaultRatePlateauPeriod_documentation_en-US" xlink:label="lab_ago_ConditionalDefaultRatePlateauPeriod" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The period for which the conditional default rate of a pool of insured obligations is held constant, following the period for which default is estimated based on past due balances.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ConditionalDefaultRatePlateauPeriod" xlink:href="ago-20240630.xsd#ago_ConditionalDefaultRatePlateauPeriod"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ConditionalDefaultRatePlateauPeriod" xlink:to="lab_ago_ConditionalDefaultRatePlateauPeriod" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_DisposalGroupClassificationDomain_26496b3b-b558-41eb-b20f-755a45d1f859_terseLabel_en-US" xlink:label="lab_us-gaap_DisposalGroupClassificationDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disposal Group Classification [Domain]</link:label>
    <link:label id="lab_us-gaap_DisposalGroupClassificationDomain_label_en-US" xlink:label="lab_us-gaap_DisposalGroupClassificationDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disposal Group Classification [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain" xlink:to="lab_us-gaap_DisposalGroupClassificationDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_InsiderTrdPoliciesProcNotAdoptedTextBlock_terseLabel_en-US" xlink:label="lab_ecd_InsiderTrdPoliciesProcNotAdoptedTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Insider Trading Policies and Procedures Not Adopted</link:label>
    <link:label id="lab_ecd_InsiderTrdPoliciesProcNotAdoptedTextBlock_label_en-US" xlink:label="lab_ecd_InsiderTrdPoliciesProcNotAdoptedTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insider Trading Policies and Procedures Not Adopted [Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_InsiderTrdPoliciesProcNotAdoptedTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_InsiderTrdPoliciesProcNotAdoptedTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_InsiderTrdPoliciesProcNotAdoptedTextBlock" xlink:to="lab_ecd_InsiderTrdPoliciesProcNotAdoptedTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_PublicFinanceMember_591f401f-a1f1-47b1-a4a7-bdb8783d587e_terseLabel_en-US" xlink:label="lab_ago_PublicFinanceMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Public finance</link:label>
    <link:label id="lab_ago_PublicFinanceMember_label_en-US" xlink:label="lab_ago_PublicFinanceMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Public Finance [Member]</link:label>
    <link:label id="lab_ago_PublicFinanceMember_documentation_en-US" xlink:label="lab_ago_PublicFinanceMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents obligations of diverse borrowers including governments and authorities providing such essential services as hospitals, schools, utilities and airports, each of which has unique credit characteristics.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_PublicFinanceMember" xlink:href="ago-20240630.xsd#ago_PublicFinanceMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_PublicFinanceMember" xlink:to="lab_ago_PublicFinanceMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_PaymentsToAcquireShortTermInvestments_2741e180-636a-4208-ae22-8ec66816824f_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireShortTermInvestments" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Purchases</link:label>
    <link:label id="lab_us-gaap_PaymentsToAcquireShortTermInvestments_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireShortTermInvestments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments to Acquire Short-Term Investments</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireShortTermInvestments" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsToAcquireShortTermInvestments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquireShortTermInvestments" xlink:to="lab_us-gaap_PaymentsToAcquireShortTermInvestments" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_CreditDerivativesContractTypeDomain_c32b48bb-c394-429b-aad0-130dfb63cb90_terseLabel_en-US" xlink:label="lab_us-gaap_CreditDerivativesContractTypeDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Credit Derivatives Contract Type [Domain]</link:label>
    <link:label id="lab_us-gaap_CreditDerivativesContractTypeDomain_label_en-US" xlink:label="lab_us-gaap_CreditDerivativesContractTypeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Credit Derivatives Contract Type [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditDerivativesContractTypeDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CreditDerivativesContractTypeDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CreditDerivativesContractTypeDomain" xlink:to="lab_us-gaap_CreditDerivativesContractTypeDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_PreTaxIncomeTaxesAndRevenueLineItems_2294b86f-4938-4046-9a48-75a57ebb34f5_terseLabel_en-US" xlink:label="lab_ago_PreTaxIncomeTaxesAndRevenueLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pre-tax Income Taxes and Revenue [Line Items]</link:label>
    <link:label id="lab_ago_PreTaxIncomeTaxesAndRevenueLineItems_label_en-US" xlink:label="lab_ago_PreTaxIncomeTaxesAndRevenueLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pre-tax Income Taxes and Revenue [Line Items]</link:label>
    <link:label id="lab_ago_PreTaxIncomeTaxesAndRevenueLineItems_documentation_en-US" xlink:label="lab_ago_PreTaxIncomeTaxesAndRevenueLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Line items represent pretax income taxes and revenue financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_PreTaxIncomeTaxesAndRevenueLineItems" xlink:href="ago-20240630.xsd#ago_PreTaxIncomeTaxesAndRevenueLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_PreTaxIncomeTaxesAndRevenueLineItems" xlink:to="lab_ago_PreTaxIncomeTaxesAndRevenueLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FutureEquityInvestmentsMember_15235c03-ad3c-4223-88ab-7a952d68fdce_terseLabel_en-US" xlink:label="lab_ago_FutureEquityInvestmentsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Future Equity Investments</link:label>
    <link:label id="lab_ago_FutureEquityInvestmentsMember_label_en-US" xlink:label="lab_ago_FutureEquityInvestmentsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Future Equity Investments [Member]</link:label>
    <link:label id="lab_ago_FutureEquityInvestmentsMember_documentation_en-US" xlink:label="lab_ago_FutureEquityInvestmentsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Future Equity Investments [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FutureEquityInvestmentsMember" xlink:href="ago-20240630.xsd#ago_FutureEquityInvestmentsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FutureEquityInvestmentsMember" xlink:to="lab_ago_FutureEquityInvestmentsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_0bdcc9d6-7eed-4ce7-a808-9c73a1ac224f_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Repurchases of common shares</link:label>
    <link:label id="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_fc962db8-2a62-49eb-9f67-689113d2dac1_terseLabel_en-US" xlink:label="lab_us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Repurchases of common stock</link:label>
    <link:label id="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_label_en-US" xlink:label="lab_us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments for Repurchase of Common Stock</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:to="lab_us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_LossEstimateSensitivityAnalysisIncreaseInConditionalDefaultRateRampDownPeriod_b64c0d05-3878-4196-87e6-d9b864a15a60_terseLabel_en-US" xlink:label="lab_ago_LossEstimateSensitivityAnalysisIncreaseInConditionalDefaultRateRampDownPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Increase in conditional default rate ramp down period</link:label>
    <link:label id="lab_ago_LossEstimateSensitivityAnalysisIncreaseInConditionalDefaultRateRampDownPeriod_label_en-US" xlink:label="lab_ago_LossEstimateSensitivityAnalysisIncreaseInConditionalDefaultRateRampDownPeriod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Estimate Sensitivity Analysis Increase in Conditional Default Rate Ramp Down Period</link:label>
    <link:label id="lab_ago_LossEstimateSensitivityAnalysisIncreaseInConditionalDefaultRateRampDownPeriod_documentation_en-US" xlink:label="lab_ago_LossEstimateSensitivityAnalysisIncreaseInConditionalDefaultRateRampDownPeriod" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Loss Estimate Sensitivity Analysis Increase in Conditional Default Rate Ramp Down Period</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_LossEstimateSensitivityAnalysisIncreaseInConditionalDefaultRateRampDownPeriod" xlink:href="ago-20240630.xsd#ago_LossEstimateSensitivityAnalysisIncreaseInConditionalDefaultRateRampDownPeriod"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_LossEstimateSensitivityAnalysisIncreaseInConditionalDefaultRateRampDownPeriod" xlink:to="lab_ago_LossEstimateSensitivityAnalysisIncreaseInConditionalDefaultRateRampDownPeriod" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_InvestmentIncomeTextBlock_288bd1a3-6b16-4bc6-97c4-433815e4dd4b_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentIncomeTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net Investment Income</link:label>
    <link:label id="lab_us-gaap_InvestmentIncomeTextBlock_label_en-US" xlink:label="lab_us-gaap_InvestmentIncomeTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investment Income [Table Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InvestmentIncomeTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentIncomeTextBlock" xlink:to="lab_us-gaap_InvestmentIncomeTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_OtherNetRealizedInvestmentGainsLosses_26e62479-1719-4ba8-ada7-6637bf8fbb38_terseLabel_en-US" xlink:label="lab_ago_OtherNetRealizedInvestmentGainsLosses" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other net realized gains (losses)</link:label>
    <link:label id="lab_ago_OtherNetRealizedInvestmentGainsLosses_label_en-US" xlink:label="lab_ago_OtherNetRealizedInvestmentGainsLosses" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Net Realized Investment Gains (Losses)</link:label>
    <link:label id="lab_ago_OtherNetRealizedInvestmentGainsLosses_documentation_en-US" xlink:label="lab_ago_OtherNetRealizedInvestmentGainsLosses" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Net Realized Investment Gains (Losses)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_OtherNetRealizedInvestmentGainsLosses" xlink:href="ago-20240630.xsd#ago_OtherNetRealizedInvestmentGainsLosses"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_OtherNetRealizedInvestmentGainsLosses" xlink:to="lab_ago_OtherNetRealizedInvestmentGainsLosses" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_VariableInterestEntityNumberofPoliciesMonitored_4b6c51fa-e80d-48bc-aa2d-a874913ad8d6_terseLabel_en-US" xlink:label="lab_ago_VariableInterestEntityNumberofPoliciesMonitored" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of policies monitored</link:label>
    <link:label id="lab_ago_VariableInterestEntityNumberofPoliciesMonitored_label_en-US" xlink:label="lab_ago_VariableInterestEntityNumberofPoliciesMonitored" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable Interest Entity, Number of Policies Monitored</link:label>
    <link:label id="lab_ago_VariableInterestEntityNumberofPoliciesMonitored_documentation_en-US" xlink:label="lab_ago_VariableInterestEntityNumberofPoliciesMonitored" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Variable Interest Entity, Non-Consolidated, Number of Policies Monitored</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_VariableInterestEntityNumberofPoliciesMonitored" xlink:href="ago-20240630.xsd#ago_VariableInterestEntityNumberofPoliciesMonitored"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_VariableInterestEntityNumberofPoliciesMonitored" xlink:to="lab_ago_VariableInterestEntityNumberofPoliciesMonitored" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_a3734641-5052-4214-8217-ee2e9368f32e_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Segment Reporting Information, by Segment [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_label_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Segment Reporting Information, by Segment [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:to="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationStatementofFinancialPositionUnearnedPremiumRevenueNetofReinsuranceRecoverable_15168489-5293-4999-83d6-447951bb5224_terseLabel_en-US" xlink:label="lab_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationStatementofFinancialPositionUnearnedPremiumRevenueNetofReinsuranceRecoverable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationStatementofFinancialPositionUnearnedPremiumRevenueNetofReinsuranceRecoverable_label_en-US" xlink:label="lab_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationStatementofFinancialPositionUnearnedPremiumRevenueNetofReinsuranceRecoverable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations with Credit Deterioration, Statement of Financial Position, Unearned Premium Revenue, Net of Reinsurance Recoverable</link:label>
    <link:label id="lab_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationStatementofFinancialPositionUnearnedPremiumRevenueNetofReinsuranceRecoverable_documentation_en-US" xlink:label="lab_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationStatementofFinancialPositionUnearnedPremiumRevenueNetofReinsuranceRecoverable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations with Credit Deterioration, Statement of Financial Position, Unearned Premium Revenue, Net of Reinsurance Recoverable</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationStatementofFinancialPositionUnearnedPremiumRevenueNetofReinsuranceRecoverable" xlink:href="ago-20240630.xsd#ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationStatementofFinancialPositionUnearnedPremiumRevenueNetofReinsuranceRecoverable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationStatementofFinancialPositionUnearnedPremiumRevenueNetofReinsuranceRecoverable" xlink:to="lab_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationStatementofFinancialPositionUnearnedPremiumRevenueNetofReinsuranceRecoverable" xlink:type="arc" order="1"/>
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    <link:loc xlink:type="locator" xlink:label="loc_ago_LossEstimateSensitivityAnalysisDecreasedConditionalDefaultRateRampDownPeriod" xlink:href="ago-20240630.xsd#ago_LossEstimateSensitivityAnalysisDecreasedConditionalDefaultRateRampDownPeriod"/>
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    <link:loc xlink:type="locator" xlink:label="loc_ecd_EqtyAwrdsAdjsMember" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_EqtyAwrdsAdjsMember"/>
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    <link:label id="lab_ago_FundInvestmentsMember_03773b31-270b-4a54-beb9-d58a9023f63a_terseLabel_en-US" xlink:label="lab_ago_FundInvestmentsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fund Investments</link:label>
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    <link:label id="lab_ago_FundInvestmentsMember_documentation_en-US" xlink:label="lab_ago_FundInvestmentsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fund Investments [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FundInvestmentsMember" xlink:href="ago-20240630.xsd#ago_FundInvestmentsMember"/>
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    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossRollForward_28fcc442-5e2e-494c-8828-3fd58ef7465b_terseLabel_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossRollForward" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Roll Forward of Credit Losses in the Investment Portfolio</link:label>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossRollForward_label_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossRollForward" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossRollForward" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossRollForward"/>
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    <link:label id="lab_ecd_AwardUndrlygSecuritiesAmt_terseLabel_en-US" xlink:label="lab_ecd_AwardUndrlygSecuritiesAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Underlying Securities</link:label>
    <link:label id="lab_ecd_AwardUndrlygSecuritiesAmt_label_en-US" xlink:label="lab_ecd_AwardUndrlygSecuritiesAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Award Underlying Securities Amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AwardUndrlygSecuritiesAmt" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_AwardUndrlygSecuritiesAmt"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AwardUndrlygSecuritiesAmt" xlink:to="lab_ecd_AwardUndrlygSecuritiesAmt" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_MeasurementInputLossSeverityMember_d75bc705-e0af-4f25-9851-d501c7756f96_terseLabel_en-US" xlink:label="lab_us-gaap_MeasurementInputLossSeverityMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss severity</link:label>
    <link:label id="lab_us-gaap_MeasurementInputLossSeverityMember_label_en-US" xlink:label="lab_us-gaap_MeasurementInputLossSeverityMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Measurement Input, Loss Severity [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputLossSeverityMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MeasurementInputLossSeverityMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MeasurementInputLossSeverityMember" xlink:to="lab_us-gaap_MeasurementInputLossSeverityMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ScheduleOfCreditSpreadEffectOnCreditDerivativesFairValueTableTextBlock_12e9c4b7-26a2-4954-8fd6-19c692eebf42_terseLabel_en-US" xlink:label="lab_ago_ScheduleOfCreditSpreadEffectOnCreditDerivativesFairValueTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">CDS Spread on AGC and AGM</link:label>
    <link:label id="lab_ago_ScheduleOfCreditSpreadEffectOnCreditDerivativesFairValueTableTextBlock_label_en-US" xlink:label="lab_ago_ScheduleOfCreditSpreadEffectOnCreditDerivativesFairValueTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Credit Spread Effect on Credit Derivatives, Fair Value [Table Text Block]</link:label>
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    <link:label id="lab_us-gaap_DividendsCommonStockCash_852842f4-7e53-4335-94a7-74aaa97bcbe9_negatedLabel_en-US" xlink:label="lab_us-gaap_DividendsCommonStockCash" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Dividends</link:label>
    <link:label id="lab_us-gaap_DividendsCommonStockCash_label_en-US" xlink:label="lab_us-gaap_DividendsCommonStockCash" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Dividends, Common Stock, Cash</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCommonStockCash" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DividendsCommonStockCash"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DividendsCommonStockCash" xlink:to="lab_us-gaap_DividendsCommonStockCash" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_MeasurementInputLongTermRevenueGrowthRateMember_43bbe530-ecc9-4b16-a81f-4b569aa9b360_terseLabel_en-US" xlink:label="lab_us-gaap_MeasurementInputLongTermRevenueGrowthRateMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Terminal growth rate</link:label>
    <link:label id="lab_us-gaap_MeasurementInputLongTermRevenueGrowthRateMember_label_en-US" xlink:label="lab_us-gaap_MeasurementInputLongTermRevenueGrowthRateMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Measurement Input, Long-Term Revenue Growth Rate [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputLongTermRevenueGrowthRateMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MeasurementInputLongTermRevenueGrowthRateMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MeasurementInputLongTermRevenueGrowthRateMember" xlink:to="lab_us-gaap_MeasurementInputLongTermRevenueGrowthRateMember" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_AmendmentFlag_25c13d7c-cb87-41ed-99d7-7db7c939b2f3_terseLabel_en-US" xlink:label="lab_dei_AmendmentFlag" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amendment Flag</link:label>
    <link:label id="lab_dei_AmendmentFlag_label_en-US" xlink:label="lab_dei_AmendmentFlag" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amendment Flag</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_AmendmentFlag"/>
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    <link:label id="lab_us-gaap_CarryingReportedAmountFairValueDisclosureMember_fce8f88c-c1e8-4e1f-acb8-767a1ef08d05_terseLabel_en-US" xlink:label="lab_us-gaap_CarryingReportedAmountFairValueDisclosureMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Carrying Amount</link:label>
    <link:label id="lab_us-gaap_CarryingReportedAmountFairValueDisclosureMember_label_en-US" xlink:label="lab_us-gaap_CarryingReportedAmountFairValueDisclosureMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reported Value Measurement [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember" xlink:to="lab_us-gaap_CarryingReportedAmountFairValueDisclosureMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_IncomeTaxesLineItems_6151e999-930c-4dbf-8e50-a5a4f47e6f0e_terseLabel_en-US" xlink:label="lab_ago_IncomeTaxesLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income Taxes [Line Items]</link:label>
    <link:label id="lab_ago_IncomeTaxesLineItems_label_en-US" xlink:label="lab_ago_IncomeTaxesLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Taxes [Line Items]</link:label>
    <link:label id="lab_ago_IncomeTaxesLineItems_documentation_en-US" xlink:label="lab_ago_IncomeTaxesLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">[Line Items] for Income Taxes [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_IncomeTaxesLineItems" xlink:href="ago-20240630.xsd#ago_IncomeTaxesLineItems"/>
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    <link:label id="lab_us-gaap_StockAppreciationRightsSARSMember_terseLabel_en-US" xlink:label="lab_us-gaap_StockAppreciationRightsSARSMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock Appreciation Rights (SARs)</link:label>
    <link:label id="lab_us-gaap_StockAppreciationRightsSARSMember_label_en-US" xlink:label="lab_us-gaap_StockAppreciationRightsSARSMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock Appreciation Rights (SARs) [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockAppreciationRightsSARSMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockAppreciationRightsSARSMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockAppreciationRightsSARSMember" xlink:to="lab_us-gaap_StockAppreciationRightsSARSMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions_44fafaee-d7e2-46eb-90ea-f2db27494e4d_terseLabel_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of securities</link:label>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions_label_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions"/>
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    <link:label id="lab_us-gaap_LongLivedAssetsHeldForSaleLineItems_cf9d6232-1684-44b3-9158-fe7a4654f7b0_terseLabel_en-US" xlink:label="lab_us-gaap_LongLivedAssetsHeldForSaleLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-Lived Assets Held-for-sale [Line Items]</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleLineItems" xlink:to="lab_us-gaap_LongLivedAssetsHeldForSaleLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_e0c0e9a2-0e85-4286-a0de-6bde3b6689c6_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other comprehensive income (loss) before reclassifications</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), before Reclassifications, Net of Tax</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax"/>
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    <link:label id="lab_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_45970f30-a62f-4965-8e63-f6274b3fd0b8_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value, Measurements, Fair Value Hierarchy [Domain]</link:label>
    <link:label id="lab_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_label_en-US" xlink:label="lab_us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Hierarchy and NAV [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:to="lab_us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuarantyInsuredObligationsExpectedAmortizationAbstract_0833e557-6d22-4b08-bc93-f9bb14d116ed_verboseLabel_en-US" xlink:label="lab_ago_FinancialGuarantyInsuredObligationsExpectedAmortizationAbstract" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Scheduled Net Par Amortization</link:label>
    <link:label id="lab_ago_FinancialGuarantyInsuredObligationsExpectedAmortizationAbstract_label_en-US" xlink:label="lab_ago_FinancialGuarantyInsuredObligationsExpectedAmortizationAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guaranty Insured Obligations, Expected Amortization [Abstract]</link:label>
    <link:label id="lab_ago_FinancialGuarantyInsuredObligationsExpectedAmortizationAbstract_documentation_en-US" xlink:label="lab_ago_FinancialGuarantyInsuredObligationsExpectedAmortizationAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financial Guaranty Insured Obligations, Expected Amortization [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuarantyInsuredObligationsExpectedAmortizationAbstract" xlink:href="ago-20240630.xsd#ago_FinancialGuarantyInsuredObligationsExpectedAmortizationAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuarantyInsuredObligationsExpectedAmortizationAbstract" xlink:to="lab_ago_FinancialGuarantyInsuredObligationsExpectedAmortizationAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_RecoveryOfErrCompDisclosureLineItems_label_en-US" xlink:label="lab_ecd_RecoveryOfErrCompDisclosureLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Recovery of Erroneously Awarded Compensation Disclosure [Line Items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_RecoveryOfErrCompDisclosureLineItems" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_RecoveryOfErrCompDisclosureLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_RecoveryOfErrCompDisclosureLineItems" xlink:to="lab_ecd_RecoveryOfErrCompDisclosureLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InternalNoninvestmentGradeLevel3Member_5b470097-166f-432b-955c-3d4956c3dd3e_terseLabel_en-US" xlink:label="lab_ago_InternalNoninvestmentGradeLevel3Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">BIG&#160;3</link:label>
    <link:label id="lab_ago_InternalNoninvestmentGradeLevel3Member_label_en-US" xlink:label="lab_ago_InternalNoninvestmentGradeLevel3Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Internal Noninvestment Grade, Level 3 [Member]</link:label>
    <link:label id="lab_ago_InternalNoninvestmentGradeLevel3Member_documentation_en-US" xlink:label="lab_ago_InternalNoninvestmentGradeLevel3Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the below investment grade transactions for which lifetime losses are expected and on which claims (other than liquidity claims) have been paid. Transactions remain in this category when claims have been paid and only recoverable remains.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InternalNoninvestmentGradeLevel3Member" xlink:href="ago-20240630.xsd#ago_InternalNoninvestmentGradeLevel3Member"/>
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    <link:label id="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements_cba02993-0b64-485f-a381-a4084b760569_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Settlements</link:label>
    <link:label id="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements_label_en-US" xlink:label="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements" xlink:to="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityAddressPostalZipCode_175b6e45-efc3-478e-889e-2b900b9f6106_terseLabel_en-US" xlink:label="lab_dei_EntityAddressPostalZipCode" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Address, Postal Zip Code</link:label>
    <link:label id="lab_dei_EntityAddressPostalZipCode_label_en-US" xlink:label="lab_dei_EntityAddressPostalZipCode" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Address, Postal Zip Code</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityAddressPostalZipCode"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityAddressPostalZipCode" xlink:to="lab_dei_EntityAddressPostalZipCode" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNumberOfContractsIssuedAndOutstanding_4ed1c057-e57a-4d64-a198-da48fa8ec64d_verboseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNumberOfContractsIssuedAndOutstanding" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Number of risks, financial guaranty insurance</link:label>
    <link:label id="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNumberOfContractsIssuedAndOutstanding_48385eb0-4282-47ca-9139-6ba375557087_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNumberOfContractsIssuedAndOutstanding" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total (in contracts)</link:label>
    <link:label id="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNumberOfContractsIssuedAndOutstanding_label_en-US" xlink:label="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNumberOfContractsIssuedAndOutstanding" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations with Credit Deterioration, Number of Contracts Issued and Outstanding</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNumberOfContractsIssuedAndOutstanding" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNumberOfContractsIssuedAndOutstanding"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNumberOfContractsIssuedAndOutstanding" xlink:to="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNumberOfContractsIssuedAndOutstanding" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs_bb611bfe-74c8-4154-834e-e558edaca651_periodStartLabel_en-US" xlink:label="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Fair value at start of period</link:label>
    <link:label id="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs_63e28265-dff7-49b4-a2d1-ffdcdbb135a5_periodEndLabel_en-US" xlink:label="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Fair value at end of period</link:label>
    <link:label id="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs_label_en-US" xlink:label="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs" xlink:to="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_AociTaxAttributableToParent_c7db12e8-2d41-4855-821d-07fce5c81997_terseLabel_en-US" xlink:label="lab_us-gaap_AociTaxAttributableToParent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accumulated other comprehensive income, tax provision</link:label>
    <link:label id="lab_us-gaap_AociTaxAttributableToParent_label_en-US" xlink:label="lab_us-gaap_AociTaxAttributableToParent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">AOCI Tax, Attributable to Parent</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AociTaxAttributableToParent" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AociTaxAttributableToParent"/>
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    <link:label id="lab_ago_OutstandingExposureTextBlock_dac08423-6301-4c5a-86c1-52897e99a12b_terseLabel_en-US" xlink:label="lab_ago_OutstandingExposureTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Outstanding Exposure</link:label>
    <link:label id="lab_ago_OutstandingExposureTextBlock_label_en-US" xlink:label="lab_ago_OutstandingExposureTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Outstanding Exposure [Text Block]</link:label>
    <link:label id="lab_ago_OutstandingExposureTextBlock_documentation_en-US" xlink:label="lab_ago_OutstandingExposureTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The entity's insurance policies and credit derivative contracts guarantee the scheduled payments of principal and interest ("Debt Service") on public finance and structured finance obligations. Outstanding Exposure includes outstanding par and/or debt service amounts, including outstanding exposures on VIE's whether or not they are consolidated under US GAAP, on credits that are guaranteed by the entity.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_OutstandingExposureTextBlock" xlink:href="ago-20240630.xsd#ago_OutstandingExposureTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_OutstandingExposureTextBlock" xlink:to="lab_ago_OutstandingExposureTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ScheduleOfInvestmentsTable_ba80c5db-19f9-4b53-a819-75ded7fbeca0_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfInvestmentsTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Investments [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfInvestmentsTable_label_en-US" xlink:label="lab_us-gaap_ScheduleOfInvestmentsTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Investments [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInvestmentsTable" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfInvestmentsTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfInvestmentsTable" xlink:to="lab_us-gaap_ScheduleOfInvestmentsTable" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLoss_562d2343-5329-472e-b001-cd01022ce5cb_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Change in unrealized gains/(losses) included in earnings related to financial instruments</link:label>
    <link:label id="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLoss_label_en-US" xlink:label="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Liability, Recurring Basis, Still Held, Unrealized Gain (Loss)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLoss" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLoss"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLoss" xlink:to="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLoss" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_LitigationStatusAxis_2a8cd610-0ed6-4a36-bd9c-25883189bee4_terseLabel_en-US" xlink:label="lab_us-gaap_LitigationStatusAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Litigation Status [Axis]</link:label>
    <link:label id="lab_us-gaap_LitigationStatusAxis_label_en-US" xlink:label="lab_us-gaap_LitigationStatusAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Litigation Status [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LitigationStatusAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LitigationStatusAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LitigationStatusAxis" xlink:to="lab_us-gaap_LitigationStatusAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_982b4ce4-2998-4650-8746-fa025eb1eac6_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Other</link:label>
    <link:label id="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_label_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments for (Proceeds from) Other Investing Activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities" xlink:to="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_ChngInFrValOfOutsdngAndUnvstdEqtyAwrdsGrntdInPrrYrsMember_terseLabel_en-US" xlink:label="lab_ecd_ChngInFrValOfOutsdngAndUnvstdEqtyAwrdsGrntdInPrrYrsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested</link:label>
    <link:label id="lab_ecd_ChngInFrValOfOutsdngAndUnvstdEqtyAwrdsGrntdInPrrYrsMember_label_en-US" xlink:label="lab_ecd_ChngInFrValOfOutsdngAndUnvstdEqtyAwrdsGrntdInPrrYrsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_ChngInFrValOfOutsdngAndUnvstdEqtyAwrdsGrntdInPrrYrsMember" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_ChngInFrValOfOutsdngAndUnvstdEqtyAwrdsGrntdInPrrYrsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_ChngInFrValOfOutsdngAndUnvstdEqtyAwrdsGrntdInPrrYrsMember" xlink:to="lab_ecd_ChngInFrValOfOutsdngAndUnvstdEqtyAwrdsGrntdInPrrYrsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_YrEndFrValOfEqtyAwrdsGrntdInCvrdYrOutsdngAndUnvstdMember_terseLabel_en-US" xlink:label="lab_ecd_YrEndFrValOfEqtyAwrdsGrntdInCvrdYrOutsdngAndUnvstdMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested</link:label>
    <link:label id="lab_ecd_YrEndFrValOfEqtyAwrdsGrntdInCvrdYrOutsdngAndUnvstdMember_label_en-US" xlink:label="lab_ecd_YrEndFrValOfEqtyAwrdsGrntdInCvrdYrOutsdngAndUnvstdMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member]</link:label>
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    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsPercentOfOriginalPeriodOfConsistentConditionalDefaultRate_15bc376d-2c7f-4e3f-a30e-e96dfb2bc51d_terseLabel_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsPercentOfOriginalPeriodOfConsistentConditionalDefaultRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percent of original period of consistent conditional default rate</link:label>
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    <link:label id="lab_us-gaap_FairValueDisclosureItemAmountsDomain_0b677dd2-4350-4400-a330-0794e1f46d0d_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueDisclosureItemAmountsDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value Measurement [Domain]</link:label>
    <link:label id="lab_us-gaap_FairValueDisclosureItemAmountsDomain_label_en-US" xlink:label="lab_us-gaap_FairValueDisclosureItemAmountsDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Measurement [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
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    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingNet_9511a623-93b6-43e3-82ec-a08e4caa7f55_totalLabel_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingNet" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingNet_label_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations with Credit Deterioration Insured Contractual Payments Outstanding Net</link:label>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingNet_documentation_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingNet" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This element represents the amount of insured contractual payments outstanding on the underlying insured obligations for financial guaranty insurance contracts presented in the context of each surveillance grouping or category used by management to monitor and track potential deterioration in the credit worthiness of the insured party's ability to meet its financial obligations related to the contracts underlying financial guaranty insurance contracts, before adjusting for the effect of consolidating VIEs.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingNet" xlink:href="ago-20240630.xsd#ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingNet"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingNet" xlink:to="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingNet" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_DisclosureOfCreditDerivativesTextBlock_87444275-8f57-4acd-aee2-f051b338b121_terseLabel_en-US" xlink:label="lab_us-gaap_DisclosureOfCreditDerivativesTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Credit Derivatives Subordination and Ratings and Net Par Outstanding by Internal Rating</link:label>
    <link:label id="lab_us-gaap_DisclosureOfCreditDerivativesTextBlock_label_en-US" xlink:label="lab_us-gaap_DisclosureOfCreditDerivativesTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of Credit Derivatives [Table Text Block]</link:label>
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    <link:label id="lab_ecd_AdjToPeoCompFnTextBlock_terseLabel_en-US" xlink:label="lab_ecd_AdjToPeoCompFnTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Adjustment To PEO Compensation, Footnote</link:label>
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    <link:label id="lab_us-gaap_ForeignCurrencyTransactionGainLossRealized_2b16068e-8dd3-4ae6-82ac-7d6e891bc3f4_terseLabel_en-US" xlink:label="lab_us-gaap_ForeignCurrencyTransactionGainLossRealized" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net foreign currency gains (losses)</link:label>
    <link:label id="lab_us-gaap_ForeignCurrencyTransactionGainLossRealized_label_en-US" xlink:label="lab_us-gaap_ForeignCurrencyTransactionGainLossRealized" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Realized Gain (Loss), Foreign Currency Transaction, before Tax</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossRealized" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ForeignCurrencyTransactionGainLossRealized"/>
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    <link:label id="lab_ago_StockRepurchaseProgramAdditionalAuthorizedAmount_934ae401-ac77-4fd1-b3e7-2271616ccc5f_terseLabel_en-US" xlink:label="lab_ago_StockRepurchaseProgramAdditionalAuthorizedAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Repurchased additional authorized amount</link:label>
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    <link:label id="lab_ago_StockRepurchaseProgramAdditionalAuthorizedAmount_documentation_en-US" xlink:label="lab_ago_StockRepurchaseProgramAdditionalAuthorizedAmount" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Stock Repurchase Program, Additional Authorized Amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_StockRepurchaseProgramAdditionalAuthorizedAmount" xlink:href="ago-20240630.xsd#ago_StockRepurchaseProgramAdditionalAuthorizedAmount"/>
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    <link:label id="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_a32e7e1e-0721-4027-8945-821af8b2fa15_totalLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Distributed and undistributed income (loss) available to common shareholders of AGL and subsidiaries, basic</link:label>
    <link:label id="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_946d8a09-6bf2-4fb4-9783-ee5cdf49b0a7_terseLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Distributed and undistributed income (loss) available to common shareholders of AGL and subsidiaries, basic</link:label>
    <link:label id="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_label_en-US" xlink:label="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Income (Loss) Available to Common Stockholders, Basic</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:to="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_MarketApproachValuationTechniqueMember_7c732b87-83fc-422b-914f-af626945359e_terseLabel_en-US" xlink:label="lab_us-gaap_MarketApproachValuationTechniqueMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Valuation, Market Approach</link:label>
    <link:label id="lab_us-gaap_MarketApproachValuationTechniqueMember_label_en-US" xlink:label="lab_us-gaap_MarketApproachValuationTechniqueMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Valuation, Market Approach [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketApproachValuationTechniqueMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MarketApproachValuationTechniqueMember"/>
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    <link:label id="lab_ecd_CompActuallyPaidVsOtherMeasureTextBlock_terseLabel_en-US" xlink:label="lab_ecd_CompActuallyPaidVsOtherMeasureTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Compensation Actually Paid vs. Other Measure</link:label>
    <link:label id="lab_ecd_CompActuallyPaidVsOtherMeasureTextBlock_label_en-US" xlink:label="lab_ecd_CompActuallyPaidVsOtherMeasureTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Compensation Actually Paid vs. Other Measure [Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_CompActuallyPaidVsOtherMeasureTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_CompActuallyPaidVsOtherMeasureTextBlock"/>
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    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTableTextBlock_11de1512-e087-4c42-b9f2-d8a7ff537061_terseLabel_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fixed-Maturity Securities Gross Unrealized Loss by Length of Time</link:label>
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    <link:label id="lab_ecd_VstngDtFrValOfEqtyAwrdsGrntdAndVstdInCvrdYrMember_terseLabel_en-US" xlink:label="lab_ecd_VstngDtFrValOfEqtyAwrdsGrntdAndVstdInCvrdYrMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ecd_VstngDtFrValOfEqtyAwrdsGrntdAndVstdInCvrdYrMember" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_VstngDtFrValOfEqtyAwrdsGrntdAndVstdInCvrdYrMember"/>
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    <link:label id="lab_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarranties_3eb326a1-ac22-47e6-a5ee-9cc5dc990829_verboseLabel_en-US" xlink:label="lab_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarranties" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Net economic loss development (benefit)</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarranties" xlink:to="lab_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarranties" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_Assets_1ef0af9d-e719-44b3-aa63-45d890ac5b39_totalLabel_en-US" xlink:label="lab_us-gaap_Assets" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total assets</link:label>
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    <link:label id="lab_us-gaap_NetIncomeLoss_label_en-US" xlink:label="lab_us-gaap_NetIncomeLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Income (Loss) Attributable to Parent</link:label>
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    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivableNewBusinessWritten_589c3077-1664-43d3-9267-0791e0ee377a_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivableNewBusinessWritten" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gross written premiums on new business, net of commissions</link:label>
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    <link:label id="lab_us-gaap_RealizedGainLossOnInvestmentsTableTextBlock_340d3d64-7361-4578-b6a4-ca6655f58788_terseLabel_en-US" xlink:label="lab_us-gaap_RealizedGainLossOnInvestmentsTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net Realized Investment Gains (Losses)</link:label>
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    <link:label id="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_eff9a8dd-82cd-460e-94c7-98fb0b361750_terseLabel_en-US" xlink:label="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Effect of foreign exchange rate changes</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:to="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_ForgoneRecoveryIndName_terseLabel_en-US" xlink:label="lab_ecd_ForgoneRecoveryIndName" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Name</link:label>
    <link:label id="lab_ecd_ForgoneRecoveryIndName_label_en-US" xlink:label="lab_ecd_ForgoneRecoveryIndName" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Forgone Recovery, Individual Name</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_ForgoneRecoveryIndName" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_ForgoneRecoveryIndName"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_ForgoneRecoveryIndName" xlink:to="lab_ecd_ForgoneRecoveryIndName" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_UnderlyingAssetClassAxis_0220fb88-4b98-4a02-9646-45af3d2d2cb2_terseLabel_en-US" xlink:label="lab_us-gaap_UnderlyingAssetClassAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Underlying Asset Class [Axis]</link:label>
    <link:label id="lab_us-gaap_UnderlyingAssetClassAxis_label_en-US" xlink:label="lab_us-gaap_UnderlyingAssetClassAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Underlying Asset Class [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnderlyingAssetClassAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_UnderlyingAssetClassAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UnderlyingAssetClassAxis" xlink:to="lab_us-gaap_UnderlyingAssetClassAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_LossContingencyNatureDomain_a6109820-1acb-43dc-8296-d407d175fa92_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingencyNatureDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss Contingency, Nature [Domain]</link:label>
    <link:label id="lab_us-gaap_LossContingencyNatureDomain_label_en-US" xlink:label="lab_us-gaap_LossContingencyNatureDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Contingency, Nature [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyNatureDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LossContingencyNatureDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingencyNatureDomain" xlink:to="lab_us-gaap_LossContingencyNatureDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTaxAndReclassificationAdjustment_b7e8ef6e-53d6-46f0-b289-80ecaf2544d8_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTaxAndReclassificationAdjustment" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Change in instrument-specific credit risk on financial guaranty variable interest entities&#8217; liabilities with recourse, net of tax provision (benefit)</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTaxAndReclassificationAdjustment_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTaxAndReclassificationAdjustment" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, after Tax and Reclassification Adjustment</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTaxAndReclassificationAdjustment" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTaxAndReclassificationAdjustment"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTaxAndReclassificationAdjustment" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTaxAndReclassificationAdjustment" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivedOverContractPeriodPremiumReceivableWeightedAverageRiskFreeDiscountRate_dc89af35-841b-4ca1-8b97-c09ccf493189_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivedOverContractPeriodPremiumReceivableWeightedAverageRiskFreeDiscountRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted-average risk-free rate used to discount premiums</link:label>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivedOverContractPeriodPremiumReceivableWeightedAverageRiskFreeDiscountRate_label_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivedOverContractPeriodPremiumReceivableWeightedAverageRiskFreeDiscountRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contract, Premium Received over Contract Period, Premium Receivable, Weighted-Average Risk-Free Discount Rate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivedOverContractPeriodPremiumReceivableWeightedAverageRiskFreeDiscountRate" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivedOverContractPeriodPremiumReceivableWeightedAverageRiskFreeDiscountRate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivedOverContractPeriodPremiumReceivableWeightedAverageRiskFreeDiscountRate" xlink:to="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivedOverContractPeriodPremiumReceivableWeightedAverageRiskFreeDiscountRate" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_AwardTmgMnpiCnsdrdFlag_terseLabel_en-US" xlink:label="lab_ecd_AwardTmgMnpiCnsdrdFlag" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Award Timing MNPI Considered</link:label>
    <link:label id="lab_ecd_AwardTmgMnpiCnsdrdFlag_label_en-US" xlink:label="lab_ecd_AwardTmgMnpiCnsdrdFlag" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Award Timing MNPI Considered [Flag]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AwardTmgMnpiCnsdrdFlag" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_AwardTmgMnpiCnsdrdFlag"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AwardTmgMnpiCnsdrdFlag" xlink:to="lab_ecd_AwardTmgMnpiCnsdrdFlag" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingAbstract_248860a8-98cd-4f06-ab55-1360e0d7f41b_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total net outstanding exposure</link:label>
    <link:label id="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingAbstract_label_en-US" xlink:label="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations with Credit Deterioration, Insured Contractual Payments Outstanding [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingAbstract" xlink:to="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_OutstandingAggtErrCompAmt_terseLabel_en-US" xlink:label="lab_ecd_OutstandingAggtErrCompAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Outstanding Aggregate Erroneous Compensation Amount</link:label>
    <link:label id="lab_ecd_OutstandingAggtErrCompAmt_label_en-US" xlink:label="lab_ecd_OutstandingAggtErrCompAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Outstanding Aggregate Erroneous Compensation Amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_OutstandingAggtErrCompAmt" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_OutstandingAggtErrCompAmt"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_OutstandingAggtErrCompAmt" xlink:to="lab_ecd_OutstandingAggtErrCompAmt" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueDisclosureOfAssetAndLiabilityNotMeasuredAtFairValueTableTextBlock_fa66554b-8a0d-4756-841b-9c07bfb1dfbf_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueDisclosureOfAssetAndLiabilityNotMeasuredAtFairValueTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Financial Instruments Not Carried at Fair Value</link:label>
    <link:label id="lab_us-gaap_FairValueDisclosureOfAssetAndLiabilityNotMeasuredAtFairValueTableTextBlock_label_en-US" xlink:label="lab_us-gaap_FairValueDisclosureOfAssetAndLiabilityNotMeasuredAtFairValueTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Disclosure of Asset and Liability Not Measured at Fair Value [Table Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureOfAssetAndLiabilityNotMeasuredAtFairValueTableTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueDisclosureOfAssetAndLiabilityNotMeasuredAtFairValueTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueDisclosureOfAssetAndLiabilityNotMeasuredAtFairValueTableTextBlock" xlink:to="lab_us-gaap_FairValueDisclosureOfAssetAndLiabilityNotMeasuredAtFairValueTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_GuarantorObligationsNetExpectedLosstobePaidAfterRecoveriesforRepresentationsandWarrantiesPercent_a1997bc8-1cc4-4065-ad4d-aba3b64dd97f_terseLabel_en-US" xlink:label="lab_ago_GuarantorObligationsNetExpectedLosstobePaidAfterRecoveriesforRepresentationsandWarrantiesPercent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net expected loss to be paid after recoveries for representations and warranties, percent</link:label>
    <link:label id="lab_ago_GuarantorObligationsNetExpectedLosstobePaidAfterRecoveriesforRepresentationsandWarrantiesPercent_label_en-US" xlink:label="lab_ago_GuarantorObligationsNetExpectedLosstobePaidAfterRecoveriesforRepresentationsandWarrantiesPercent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Net Expected Loss to be Paid After Recoveries for Representations and Warranties, Percent</link:label>
    <link:label id="lab_ago_GuarantorObligationsNetExpectedLosstobePaidAfterRecoveriesforRepresentationsandWarrantiesPercent_documentation_en-US" xlink:label="lab_ago_GuarantorObligationsNetExpectedLosstobePaidAfterRecoveriesforRepresentationsandWarrantiesPercent" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Net Expected Loss to be Paid After Recoveries for Representations and Warranties, Percent</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_GuarantorObligationsNetExpectedLosstobePaidAfterRecoveriesforRepresentationsandWarrantiesPercent" xlink:href="ago-20240630.xsd#ago_GuarantorObligationsNetExpectedLosstobePaidAfterRecoveriesforRepresentationsandWarrantiesPercent"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_GuarantorObligationsNetExpectedLosstobePaidAfterRecoveriesforRepresentationsandWarrantiesPercent" xlink:to="lab_ago_GuarantorObligationsNetExpectedLosstobePaidAfterRecoveriesforRepresentationsandWarrantiesPercent" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_ba106959-0c1c-4900-9bbd-504e23021318_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Carrying amount and estimated fair value financial instruments</link:label>
    <link:label id="lab_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_label_en-US" xlink:label="lab_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="lab_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_PeoActuallyPaidCompAmt_terseLabel_en-US" xlink:label="lab_ecd_PeoActuallyPaidCompAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">PEO Actually Paid Compensation Amount</link:label>
    <link:label id="lab_ecd_PeoActuallyPaidCompAmt_label_en-US" xlink:label="lab_ecd_PeoActuallyPaidCompAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">PEO Actually Paid Compensation Amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_PeoActuallyPaidCompAmt" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_PeoActuallyPaidCompAmt"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_PeoActuallyPaidCompAmt" xlink:to="lab_ecd_PeoActuallyPaidCompAmt" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsNetPremiumsReceivableAdjustmentAccretionofDiscountonNetPremiumReceivable_d6f56395-e8d5-4236-92bf-0d8a5d37dac0_negatedTerseLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsNetPremiumsReceivableAdjustmentAccretionofDiscountonNetPremiumReceivable" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Accretion of discount on net premiums receivable</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsNetPremiumsReceivableAdjustmentAccretionofDiscountonNetPremiumReceivable_label_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsNetPremiumsReceivableAdjustmentAccretionofDiscountonNetPremiumReceivable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Net Premiums Receivable Adjustment Accretion of Discount on Net Premium Receivable</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsNetPremiumsReceivableAdjustmentAccretionofDiscountonNetPremiumReceivable_documentation_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsNetPremiumsReceivableAdjustmentAccretionofDiscountonNetPremiumReceivable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This element represents the accretion of the discount for premiums receivable, net of ceded contracts, on financial guaranty insurance contracts.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuaranteeInsuranceContractsNetPremiumsReceivableAdjustmentAccretionofDiscountonNetPremiumReceivable" xlink:href="ago-20240630.xsd#ago_FinancialGuaranteeInsuranceContractsNetPremiumsReceivableAdjustmentAccretionofDiscountonNetPremiumReceivable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuaranteeInsuranceContractsNetPremiumsReceivableAdjustmentAccretionofDiscountonNetPremiumReceivable" xlink:to="lab_ago_FinancialGuaranteeInsuranceContractsNetPremiumsReceivableAdjustmentAccretionofDiscountonNetPremiumReceivable" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_MarketableSecuritiesTextBlock_e1430e50-62c3-4a01-b70b-5a27d5edcc64_terseLabel_en-US" xlink:label="lab_us-gaap_MarketableSecuritiesTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Marketable Securities</link:label>
    <link:label id="lab_us-gaap_MarketableSecuritiesTextBlock_label_en-US" xlink:label="lab_us-gaap_MarketableSecuritiesTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Marketable Securities [Table Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketableSecuritiesTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MarketableSecuritiesTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MarketableSecuritiesTextBlock" xlink:to="lab_us-gaap_MarketableSecuritiesTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_PaymentsForProceedsFromInvestmentsAbstract_e26394f7-0cc1-4a29-a9c9-b7f576d139b1_terseLabel_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromInvestmentsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fixed-maturity securities, available-for-sale:</link:label>
    <link:label id="lab_us-gaap_PaymentsForProceedsFromInvestmentsAbstract_label_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromInvestmentsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments for (Proceeds from) Investments [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForProceedsFromInvestmentsAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsForProceedsFromInvestmentsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsForProceedsFromInvestmentsAbstract" xlink:to="lab_us-gaap_PaymentsForProceedsFromInvestmentsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_StructuredProductsMember_ae3a05eb-e583-4f1c-a438-b8e340c63419_terseLabel_en-US" xlink:label="lab_ago_StructuredProductsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Structured products</link:label>
    <link:label id="lab_ago_StructuredProductsMember_label_en-US" xlink:label="lab_ago_StructuredProductsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Structured Products [Member]</link:label>
    <link:label id="lab_ago_StructuredProductsMember_documentation_en-US" xlink:label="lab_ago_StructuredProductsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Structured Products [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_StructuredProductsMember" xlink:href="ago-20240630.xsd#ago_StructuredProductsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_StructuredProductsMember" xlink:to="lab_ago_StructuredProductsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_AdjToCompAxis_terseLabel_en-US" xlink:label="lab_ecd_AdjToCompAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Adjustment to Compensation:</link:label>
    <link:label id="lab_ecd_AdjToCompAxis_label_en-US" xlink:label="lab_ecd_AdjToCompAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustment to Compensation [Axis]</link:label>
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    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_e10ec5f9-59ef-4193-bd29-22e9df4de565_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accumulated other comprehensive income (loss), net of tax of $(75) and $(67)</link:label>
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    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueRollingMaturityAbstract_0619307c-2baf-482d-8cb1-aeff3d071668_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueRollingMaturityAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated Fair&#160;Value</link:label>
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    <link:label id="lab_ecd_PnsnAdjsSvcCstMember_terseLabel_en-US" xlink:label="lab_ecd_PnsnAdjsSvcCstMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pension Adjustments Service Cost</link:label>
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    <link:label id="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_89d8f2ca-eed7-4ab6-90df-c122f3ca376d_terseLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Basic shares (in shares)</link:label>
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    <link:label id="lab_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_d1210073-dcd4-49dd-ab0f-9b2ae382efba_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Related Party [Axis]</link:label>
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    <link:label id="lab_ago_CashFlowsFromConsolidatedInvestmentVehiclesAbstract_8178e72f-1871-4d1a-8d9d-5daffaf04a34_terseLabel_en-US" xlink:label="lab_ago_CashFlowsFromConsolidatedInvestmentVehiclesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash flows from consolidated investment vehicles:</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax" xlink:to="lab_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRatePlateauRateProjectionPeriodDecrease_55ec68ec-59e7-4e04-972f-97bb431413fd_terseLabel_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRatePlateauRateProjectionPeriodDecrease" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Decrease in the plateau period used to calculate potential change in loss estimate (in months)</link:label>
    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRatePlateauRateProjectionPeriodDecrease_label_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRatePlateauRateProjectionPeriodDecrease" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Projected Loss Assumptions, Conditional Default Rate, Plateau Rate, Projection Period Decrease</link:label>
    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRatePlateauRateProjectionPeriodDecrease_documentation_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRatePlateauRateProjectionPeriodDecrease" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the decrease in the conditional default rate plateau period for which the change in loss estimate for a pool of insured obligations is calculated.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRatePlateauRateProjectionPeriodDecrease" xlink:href="ago-20240630.xsd#ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRatePlateauRateProjectionPeriodDecrease"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRatePlateauRateProjectionPeriodDecrease" xlink:to="lab_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRatePlateauRateProjectionPeriodDecrease" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThanThreeAndWithinFourYearsFromBalanceSheetDate_455dea27-81cf-48a4-8ad8-b1fabbd1dc86_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThanThreeAndWithinFourYearsFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2027</link:label>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThanThreeAndWithinFourYearsFromBalanceSheetDate_label_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThanThreeAndWithinFourYearsFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contract, Premium Receivable, to be Collected, Year Four</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThanThreeAndWithinFourYearsFromBalanceSheetDate" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThanThreeAndWithinFourYearsFromBalanceSheetDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThanThreeAndWithinFourYearsFromBalanceSheetDate" xlink:to="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThanThreeAndWithinFourYearsFromBalanceSheetDate" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuaranteePoliciesPaidinInstallmentsMember_ea181682-fa70-4d14-96df-1cae08cafe76_terseLabel_en-US" xlink:label="lab_ago_FinancialGuaranteePoliciesPaidinInstallmentsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial Guarantee Policies Paid in Installments</link:label>
    <link:label id="lab_ago_FinancialGuaranteePoliciesPaidinInstallmentsMember_label_en-US" xlink:label="lab_ago_FinancialGuaranteePoliciesPaidinInstallmentsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Policies Paid in Installments [Member]</link:label>
    <link:label id="lab_ago_FinancialGuaranteePoliciesPaidinInstallmentsMember_documentation_en-US" xlink:label="lab_ago_FinancialGuaranteePoliciesPaidinInstallmentsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents financial guarantee insurance contracts paid in installments.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuaranteePoliciesPaidinInstallmentsMember" xlink:href="ago-20240630.xsd#ago_FinancialGuaranteePoliciesPaidinInstallmentsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuaranteePoliciesPaidinInstallmentsMember" xlink:to="lab_ago_FinancialGuaranteePoliciesPaidinInstallmentsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_InternalCreditAssessmentAxis_0d348f9c-51f0-4228-b9dc-ee2ee68d0fe6_terseLabel_en-US" xlink:label="lab_us-gaap_InternalCreditAssessmentAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Internal Credit Assessment [Axis]</link:label>
    <link:label id="lab_us-gaap_InternalCreditAssessmentAxis_label_en-US" xlink:label="lab_us-gaap_InternalCreditAssessmentAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Internal Credit Assessment [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InternalCreditAssessmentAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InternalCreditAssessmentAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InternalCreditAssessmentAxis" xlink:to="lab_us-gaap_InternalCreditAssessmentAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_EffectiveIncomeTaxRateReconciliationGlobalMinimumTaxAmount_55bb974a-21fc-40b6-be53-d61a45be3d0e_terseLabel_en-US" xlink:label="lab_ago_EffectiveIncomeTaxRateReconciliationGlobalMinimumTaxAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Global minimum tax</link:label>
    <link:label id="lab_ago_EffectiveIncomeTaxRateReconciliationGlobalMinimumTaxAmount_label_en-US" xlink:label="lab_ago_EffectiveIncomeTaxRateReconciliationGlobalMinimumTaxAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Effective Income Tax Rate Reconciliation, Global Minimum Tax, Amount</link:label>
    <link:label id="lab_ago_EffectiveIncomeTaxRateReconciliationGlobalMinimumTaxAmount_documentation_en-US" xlink:label="lab_ago_EffectiveIncomeTaxRateReconciliationGlobalMinimumTaxAmount" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Effective Income Tax Rate Reconciliation, Global Minimum Tax, Amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_EffectiveIncomeTaxRateReconciliationGlobalMinimumTaxAmount" xlink:href="ago-20240630.xsd#ago_EffectiveIncomeTaxRateReconciliationGlobalMinimumTaxAmount"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_EffectiveIncomeTaxRateReconciliationGlobalMinimumTaxAmount" xlink:to="lab_ago_EffectiveIncomeTaxRateReconciliationGlobalMinimumTaxAmount" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_SegmentReportingInformationLineItems_6ddd7e7f-6d30-44c8-b7e3-29596097795f_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentReportingInformationLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Segment Reporting Information [Line Items]</link:label>
    <link:label id="lab_us-gaap_SegmentReportingInformationLineItems_label_en-US" xlink:label="lab_us-gaap_SegmentReportingInformationLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segment Reporting Information [Line Items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems" xlink:to="lab_us-gaap_SegmentReportingInformationLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNetClaimLiability_80e1a60d-493a-4743-9b6d-f61a3f342ea0_totalLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNetClaimLiability" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Gross</link:label>
    <link:label id="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNetClaimLiability_label_en-US" xlink:label="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNetClaimLiability" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations with Credit Deterioration, Net Claim Liability</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNetClaimLiability" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNetClaimLiability"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNetClaimLiability" xlink:to="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNetClaimLiability" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_NumberOfSurveillanceCategories_a8552718-dbf8-4806-8d76-a43eee608e14_terseLabel_en-US" xlink:label="lab_ago_NumberOfSurveillanceCategories" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of surveillance categories</link:label>
    <link:label id="lab_ago_NumberOfSurveillanceCategories_label_en-US" xlink:label="lab_ago_NumberOfSurveillanceCategories" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number Of Surveillance Categories</link:label>
    <link:label id="lab_ago_NumberOfSurveillanceCategories_documentation_en-US" xlink:label="lab_ago_NumberOfSurveillanceCategories" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number Of Surveillance Categories</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_NumberOfSurveillanceCategories" xlink:href="ago-20240630.xsd#ago_NumberOfSurveillanceCategories"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_NumberOfSurveillanceCategories" xlink:to="lab_ago_NumberOfSurveillanceCategories" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsPeriodOfConsistentConditionalDefaultRate_3e4216fc-4ade-4e78-94c9-43dacfe85495_terseLabel_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsPeriodOfConsistentConditionalDefaultRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Projected loss assumptions, period of consistent conditional default rate</link:label>
    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsPeriodOfConsistentConditionalDefaultRate_label_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsPeriodOfConsistentConditionalDefaultRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Projected Loss Assumptions, Period Of Consistent Conditional Default Rate</link:label>
    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsPeriodOfConsistentConditionalDefaultRate_documentation_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsPeriodOfConsistentConditionalDefaultRate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Projected Loss Assumptions, Period Of Consistent Conditional Default Rate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_GuarantorObligationsProjectedLossAssumptionsPeriodOfConsistentConditionalDefaultRate" xlink:href="ago-20240630.xsd#ago_GuarantorObligationsProjectedLossAssumptionsPeriodOfConsistentConditionalDefaultRate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_GuarantorObligationsProjectedLossAssumptionsPeriodOfConsistentConditionalDefaultRate" xlink:to="lab_ago_GuarantorObligationsProjectedLossAssumptionsPeriodOfConsistentConditionalDefaultRate" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_AllTradingArrangementsMember_terseLabel_en-US" xlink:label="lab_ecd_AllTradingArrangementsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">All Trading Arrangements</link:label>
    <link:label id="lab_ecd_AllTradingArrangementsMember_label_en-US" xlink:label="lab_ecd_AllTradingArrangementsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">All Trading Arrangements [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AllTradingArrangementsMember" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_AllTradingArrangementsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AllTradingArrangementsMember" xlink:to="lab_ecd_AllTradingArrangementsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_CompActuallyPaidVsNetIncomeTextBlock_terseLabel_en-US" xlink:label="lab_ecd_CompActuallyPaidVsNetIncomeTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Compensation Actually Paid vs. Net Income</link:label>
    <link:label id="lab_ecd_CompActuallyPaidVsNetIncomeTextBlock_label_en-US" xlink:label="lab_ecd_CompActuallyPaidVsNetIncomeTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Compensation Actually Paid vs. Net Income [Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_CompActuallyPaidVsNetIncomeTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_CompActuallyPaidVsNetIncomeTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_CompActuallyPaidVsNetIncomeTextBlock" xlink:to="lab_ecd_CompActuallyPaidVsNetIncomeTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_170e0f11-eb6a-497d-ae68-8aeb39aac671_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Computation of Basic and Diluted Earnings Per Share</link:label>
    <link:label id="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_label_en-US" xlink:label="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:to="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_6f9bd82a-6ca2-4233-a042-6f5ef2e8d974_terseLabel_en-US" xlink:label="lab_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Variable Interest Entity, Primary Beneficiary</link:label>
    <link:label id="lab_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_label_en-US" xlink:label="lab_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable Interest Entity, Primary Beneficiary [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VariableInterestEntityPrimaryBeneficiaryMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember" xlink:to="lab_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember" xlink:type="arc" order="1"/>
    <link:label id="lab_exch_XNYS_fde018df-2969-4818-bf73-9289c3214795_terseLabel_en-US" xlink:label="lab_exch_XNYS" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">New York Stock Exchange</link:label>
    <link:label id="lab_exch_XNYS_label_en-US" xlink:label="lab_exch_XNYS" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">NEW YORK STOCK EXCHANGE, INC. [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_exch_XNYS" xlink:href="https://xbrl.sec.gov/exch/2024/exch-2024.xsd#exch_XNYS"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_exch_XNYS" xlink:to="lab_exch_XNYS" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_Rule10b51ArrAdoptedFlag_terseLabel_en-US" xlink:label="lab_ecd_Rule10b51ArrAdoptedFlag" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Rule 10b5-1 Arrangement Adopted</link:label>
    <link:label id="lab_ecd_Rule10b51ArrAdoptedFlag_label_en-US" xlink:label="lab_ecd_Rule10b51ArrAdoptedFlag" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Rule 10b5-1 Arrangement Adopted [Flag]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_Rule10b51ArrAdoptedFlag" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_Rule10b51ArrAdoptedFlag"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_Rule10b51ArrAdoptedFlag" xlink:to="lab_ecd_Rule10b51ArrAdoptedFlag" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_AwardsCloseToMnpiDiscTable_terseLabel_en-US" xlink:label="lab_ecd_AwardsCloseToMnpiDiscTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Awards Close in Time to MNPI Disclosures</link:label>
    <link:label id="lab_ecd_AwardsCloseToMnpiDiscTable_label_en-US" xlink:label="lab_ecd_AwardsCloseToMnpiDiscTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Awards Close in Time to MNPI Disclosures [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AwardsCloseToMnpiDiscTable" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_AwardsCloseToMnpiDiscTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AwardsCloseToMnpiDiscTable" xlink:to="lab_ecd_AwardsCloseToMnpiDiscTable" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_IncomeTaxesPaidNet_172621ec-6802-4574-b4f4-3a425dd3b576_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxesPaidNet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income taxes paid (received)</link:label>
    <link:label id="lab_us-gaap_IncomeTaxesPaidNet_label_en-US" xlink:label="lab_us-gaap_IncomeTaxesPaidNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Taxes Paid, Net</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxesPaidNet" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxesPaidNet"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxesPaidNet" xlink:to="lab_us-gaap_IncomeTaxesPaidNet" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FairValueInputsHedgeCost_bc481d05-9410-46c1-bbf8-64180c7d3069_terseLabel_en-US" xlink:label="lab_ago_FairValueInputsHedgeCost" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Hedge cost (in bps)</link:label>
    <link:label id="lab_ago_FairValueInputsHedgeCost_label_en-US" xlink:label="lab_ago_FairValueInputsHedgeCost" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Inputs Hedge Cost</link:label>
    <link:label id="lab_ago_FairValueInputsHedgeCost_documentation_en-US" xlink:label="lab_ago_FairValueInputsHedgeCost" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the hedge cost (in basis points), used as an input to measure fair value.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FairValueInputsHedgeCost" xlink:href="ago-20240630.xsd#ago_FairValueInputsHedgeCost"/>
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    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsPremiumsEarnedNet_ab948310-7754-45a1-8685-969d8f0e5d9f_totalLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsPremiumsEarnedNet" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Financial guaranty insurance net earned premiums</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsPremiumsEarnedNet_label_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsPremiumsEarnedNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Premiums Earned, Net</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsPremiumsEarnedNet_documentation_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsPremiumsEarnedNet" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Premiums Earned, Net</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuaranteeInsuranceContractsPremiumsEarnedNet" xlink:href="ago-20240630.xsd#ago_FinancialGuaranteeInsuranceContractsPremiumsEarnedNet"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuaranteeInsuranceContractsPremiumsEarnedNet" xlink:to="lab_ago_FinancialGuaranteeInsuranceContractsPremiumsEarnedNet" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_EquityMethodInvestments_62165a57-95c8-467f-8ed6-84e4ab1ae3dd_terseLabel_en-US" xlink:label="lab_us-gaap_EquityMethodInvestments" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity method investments</link:label>
    <link:label id="lab_us-gaap_EquityMethodInvestments_label_en-US" xlink:label="lab_us-gaap_EquityMethodInvestments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity Method Investments</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestments" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EquityMethodInvestments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EquityMethodInvestments" xlink:to="lab_us-gaap_EquityMethodInvestments" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_PayVsPerformanceDisclosureLineItems_label_en-US" xlink:label="lab_ecd_PayVsPerformanceDisclosureLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pay vs Performance Disclosure [Line Items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_PayVsPerformanceDisclosureLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="lab_ecd_PayVsPerformanceDisclosureLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsConditionalDefaultRateFinalRate_1d496936-b9e8-467f-8adc-963758c3adbe_terseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsConditionalDefaultRateFinalRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Final CDR</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsConditionalDefaultRateFinalRate_label_en-US" xlink:label="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsConditionalDefaultRateFinalRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Projected Loss Assumptions, Conditional Default Rate, Final Rate</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsConditionalDefaultRateFinalRate_documentation_en-US" xlink:label="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsConditionalDefaultRateFinalRate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Projected Loss Assumptions, Conditional Default Rate, Final Rate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuredFinancialObligationsProjectedLossAssumptionsConditionalDefaultRateFinalRate" xlink:href="ago-20240630.xsd#ago_InsuredFinancialObligationsProjectedLossAssumptionsConditionalDefaultRateFinalRate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InsuredFinancialObligationsProjectedLossAssumptionsConditionalDefaultRateFinalRate" xlink:to="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsConditionalDefaultRateFinalRate" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_PeerGroupTotalShareholderRtnAmt_terseLabel_en-US" xlink:label="lab_ecd_PeerGroupTotalShareholderRtnAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Peer Group Total Shareholder Return Amount</link:label>
    <link:label id="lab_ecd_PeerGroupTotalShareholderRtnAmt_label_en-US" xlink:label="lab_ecd_PeerGroupTotalShareholderRtnAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Peer Group Total Shareholder Return Amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_PeerGroupTotalShareholderRtnAmt" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_PeerGroupTotalShareholderRtnAmt"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_PeerGroupTotalShareholderRtnAmt" xlink:to="lab_ecd_PeerGroupTotalShareholderRtnAmt" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsRemainderOfFiscalYear_23368a6e-284a-47f1-ac94-714b150b1ebe_totalLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsRemainderOfFiscalYear" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Subtotal 2024</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsRemainderOfFiscalYear_label_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsRemainderOfFiscalYear" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Contractual Payments, Remainder Of Fiscal Year</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsRemainderOfFiscalYear_documentation_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsRemainderOfFiscalYear" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Contractual Payments, Remainder Of Fiscal Year</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsRemainderOfFiscalYear" xlink:href="ago-20240630.xsd#ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsRemainderOfFiscalYear"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsRemainderOfFiscalYear" xlink:to="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsRemainderOfFiscalYear" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ResidentialMortgageBackedSecuritiesMember_18dccb44-6e93-431c-999e-ed03974499b4_terseLabel_en-US" xlink:label="lab_us-gaap_ResidentialMortgageBackedSecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">RMBS</link:label>
    <link:label id="lab_us-gaap_ResidentialMortgageBackedSecuritiesMember_label_en-US" xlink:label="lab_us-gaap_ResidentialMortgageBackedSecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Residential Mortgage-Backed Securities [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialMortgageBackedSecuritiesMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ResidentialMortgageBackedSecuritiesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ResidentialMortgageBackedSecuritiesMember" xlink:to="lab_us-gaap_ResidentialMortgageBackedSecuritiesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsFirstQuarterAfterPeriodEnd_34ff5215-3285-4ba3-b69e-a9f13ef5be46_terseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsFirstQuarterAfterPeriodEnd" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2024 (July 1 - September 30)</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsFirstQuarterAfterPeriodEnd_label_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsFirstQuarterAfterPeriodEnd" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Contractual Payments, First Quarter After Period End</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsFirstQuarterAfterPeriodEnd_documentation_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsFirstQuarterAfterPeriodEnd" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Contractual Payments, First Quarter After Period End</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsFirstQuarterAfterPeriodEnd" xlink:href="ago-20240630.xsd#ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsFirstQuarterAfterPeriodEnd"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsFirstQuarterAfterPeriodEnd" xlink:to="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsFirstQuarterAfterPeriodEnd" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_LoansInsuredOrGuaranteeForGovernmentAuthoritiesDomain_191cf952-89bb-458a-8ae0-2d9e609111f6_terseLabel_en-US" xlink:label="lab_ago_LoansInsuredOrGuaranteeForGovernmentAuthoritiesDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loans Insured Or Guarantee For Government Authorities [Domain]</link:label>
    <link:label id="lab_ago_LoansInsuredOrGuaranteeForGovernmentAuthoritiesDomain_label_en-US" xlink:label="lab_ago_LoansInsuredOrGuaranteeForGovernmentAuthoritiesDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans Insured Or Guarantee For Government Authorities [Domain]</link:label>
    <link:label id="lab_ago_LoansInsuredOrGuaranteeForGovernmentAuthoritiesDomain_documentation_en-US" xlink:label="lab_ago_LoansInsuredOrGuaranteeForGovernmentAuthoritiesDomain" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">[Domain] for Loans Insured Or Guarantee For Government Authorities [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_LoansInsuredOrGuaranteeForGovernmentAuthoritiesDomain" xlink:href="ago-20240630.xsd#ago_LoansInsuredOrGuaranteeForGovernmentAuthoritiesDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_LoansInsuredOrGuaranteeForGovernmentAuthoritiesDomain" xlink:to="lab_ago_LoansInsuredOrGuaranteeForGovernmentAuthoritiesDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis_75294514-4289-49ca-a6ec-8d0fed23a745_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Due within one year</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Amortized Cost</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedBeyondNineteenthFiscalYearFromBalanceSheetDate_fb7969b3-17d6-4529-9c3a-1711647a7ae8_terseLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedBeyondNineteenthFiscalYearFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">After 2043</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedBeyondNineteenthFiscalYearFromBalanceSheetDate_label_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedBeyondNineteenthFiscalYearFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts Future Expected Net Loss to be Expensed Beyond Nineteenth Fiscal Year from Balance Sheet Date</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedBeyondNineteenthFiscalYearFromBalanceSheetDate_documentation_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedBeyondNineteenthFiscalYearFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts Future Expected Net Loss to be Expensed Beyond Nineteenth Fiscal Year from Balance Sheet Date</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedBeyondNineteenthFiscalYearFromBalanceSheetDate" xlink:href="ago-20240630.xsd#ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedBeyondNineteenthFiscalYearFromBalanceSheetDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedBeyondNineteenthFiscalYearFromBalanceSheetDate" xlink:to="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedBeyondNineteenthFiscalYearFromBalanceSheetDate" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_41df56be-0daf-42e3-ae40-6af665b707a4_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value of Credit Derivatives and Effect of AGC and AGM Credit Spreads</link:label>
    <link:label id="lab_us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_label_en-US" xlink:label="lab_us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock"/>
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    <link:label id="lab_ago_FairValueYearOneLossEstimate_96ee828c-e634-42c3-adbb-fa3dbcf9e6b6_terseLabel_en-US" xlink:label="lab_ago_FairValueYearOneLossEstimate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Implied Yield</link:label>
    <link:label id="lab_ago_FairValueYearOneLossEstimate_label_en-US" xlink:label="lab_ago_FairValueYearOneLossEstimate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Year One Loss Estimate</link:label>
    <link:label id="lab_ago_FairValueYearOneLossEstimate_documentation_en-US" xlink:label="lab_ago_FairValueYearOneLossEstimate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fair Value Year One Loss Estimate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FairValueYearOneLossEstimate" xlink:href="ago-20240630.xsd#ago_FairValueYearOneLossEstimate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FairValueYearOneLossEstimate" xlink:to="lab_ago_FairValueYearOneLossEstimate" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivablePremiumExpectedToBeCollected_ccc1053f-0463-49be-a45a-ebe03c4820e5_totalLabel_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivablePremiumExpectedToBeCollected" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivablePremiumExpectedToBeCollected_label_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivablePremiumExpectedToBeCollected" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Premium Receivable, Premium Expected to be Collected</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivablePremiumExpectedToBeCollected" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivablePremiumExpectedToBeCollected"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivablePremiumExpectedToBeCollected" xlink:to="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivablePremiumExpectedToBeCollected" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedDuringFourthQuarterFollowingBalanceSheetDate_752dc94e-4187-45a8-87b7-2b98d97c954e_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedDuringFourthQuarterFollowingBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2024 (October 1 - December 31)</link:label>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedDuringFourthQuarterFollowingBalanceSheetDate_label_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedDuringFourthQuarterFollowingBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contract, Premium Receivable, to be Collected, Fourth Quarter</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedDuringFourthQuarterFollowingBalanceSheetDate" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedDuringFourthQuarterFollowingBalanceSheetDate"/>
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    <link:label id="lab_ecd_OtherPerfMeasureAmt_terseLabel_en-US" xlink:label="lab_ecd_OtherPerfMeasureAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Performance Measure, Amount</link:label>
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    <link:label id="lab_us-gaap_CommonStockSharesOutstanding_ca0a5a06-27d3-4d17-8444-0c8141ab32a1_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common stock, shares outstanding (in shares)</link:label>
    <link:label id="lab_us-gaap_CommonStockSharesOutstanding_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Shares, Outstanding</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockSharesOutstanding" xlink:to="lab_us-gaap_CommonStockSharesOutstanding" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_DeferredLoanRecoveryScenarioDomain_0de749f1-151e-46d4-abea-663118e2d4b2_terseLabel_en-US" xlink:label="lab_ago_DeferredLoanRecoveryScenarioDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred Loan Recovery Scenario [Domain]</link:label>
    <link:label id="lab_ago_DeferredLoanRecoveryScenarioDomain_label_en-US" xlink:label="lab_ago_DeferredLoanRecoveryScenarioDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Loan Recovery Scenario [Domain]</link:label>
    <link:label id="lab_ago_DeferredLoanRecoveryScenarioDomain_documentation_en-US" xlink:label="lab_ago_DeferredLoanRecoveryScenarioDomain" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Deferred Loan Recovery Scenario [Domain]</link:label>
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    <link:label id="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_label_en-US" xlink:label="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Measurement Inputs and Valuation Techniques [Line Items]</link:label>
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    <link:label id="lab_ago_ReconcilingItemsDomain_89b90516-db7e-4a55-a52c-fafc319dffe8_terseLabel_en-US" xlink:label="lab_ago_ReconcilingItemsDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reconciling Items [Domain]</link:label>
    <link:label id="lab_ago_ReconcilingItemsDomain_label_en-US" xlink:label="lab_ago_ReconcilingItemsDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reconciling Items [Domain]</link:label>
    <link:label id="lab_ago_ReconcilingItemsDomain_documentation_en-US" xlink:label="lab_ago_ReconcilingItemsDomain" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Reconciling Items [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ReconcilingItemsDomain" xlink:href="ago-20240630.xsd#ago_ReconcilingItemsDomain"/>
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    <link:label id="lab_us-gaap_MinorityInterestDecreaseFromRedemptions_49835136-a1c0-4adc-be89-e82214c5eff4_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_MinorityInterestDecreaseFromRedemptions" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Reclassification to liabilities</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestDecreaseFromRedemptions" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MinorityInterestDecreaseFromRedemptions"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MinorityInterestDecreaseFromRedemptions" xlink:to="lab_us-gaap_MinorityInterestDecreaseFromRedemptions" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleRealizedLoss_b81533b7-a965-4611-9a99-7aac6b69525f_negatedLabel_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleRealizedLoss" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Gross realized losses on sales of available-for-sale securities</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleRealizedLoss" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleRealizedLoss"/>
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    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedDuringFourthQuarterFollowingBalanceSheetDate_7b8a671e-8824-4d39-849f-0df20fea5d77_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedDuringFourthQuarterFollowingBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2024 (October 1 - December 31)</link:label>
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    <link:label id="lab_ago_StructuredFinanceAndOtherMember_d832e0ac-e05c-4ae3-81f6-b1b01ac6276f_terseLabel_en-US" xlink:label="lab_ago_StructuredFinanceAndOtherMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Structured Finance and Other</link:label>
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    <link:label id="lab_dei_EntityTaxIdentificationNumber_210f6750-44f5-4587-b3ab-d6a53e294902_terseLabel_en-US" xlink:label="lab_dei_EntityTaxIdentificationNumber" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Tax Identification Number</link:label>
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    <link:label id="lab_srt_MortgageLoansOnRealEstateLoanCategoryDomain_07a6c9a4-59f6-4bca-96cd-4ce60222989f_terseLabel_en-US" xlink:label="lab_srt_MortgageLoansOnRealEstateLoanCategoryDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Category [Domain]</link:label>
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    <link:label id="lab_us-gaap_DeferredPolicyAcquisitionCosts_de702f00-7f63-4d3b-afaf-f7e3605392f7_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredPolicyAcquisitionCosts" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred acquisition costs</link:label>
    <link:label id="lab_us-gaap_DeferredPolicyAcquisitionCosts_label_en-US" xlink:label="lab_us-gaap_DeferredPolicyAcquisitionCosts" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Policy Acquisition Cost</link:label>
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    <link:label id="lab_us-gaap_IntersegmentEliminationMember_8f3b8b7b-ab93-47a0-af0b-8fb0b7b56417_terseLabel_en-US" xlink:label="lab_us-gaap_IntersegmentEliminationMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intersegment Eliminations</link:label>
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    <link:label id="lab_us-gaap_OtherCostAndExpenseOperating_bafab930-29c2-4cef-a3fb-b83b21684b73_terseLabel_en-US" xlink:label="lab_us-gaap_OtherCostAndExpenseOperating" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other operating expenses</link:label>
    <link:label id="lab_us-gaap_OtherCostAndExpenseOperating_label_en-US" xlink:label="lab_us-gaap_OtherCostAndExpenseOperating" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Cost and Expense, Operating</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCostAndExpenseOperating" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherCostAndExpenseOperating"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherCostAndExpenseOperating" xlink:to="lab_us-gaap_OtherCostAndExpenseOperating" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_LitigationSettlementAmountAwardedFromOtherPartyAnnualInterestRate_6644a5fd-3c80-430f-b65a-9934a48d3c47_terseLabel_en-US" xlink:label="lab_ago_LitigationSettlementAmountAwardedFromOtherPartyAnnualInterestRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amount awarded from other party, annual interest rate</link:label>
    <link:label id="lab_ago_LitigationSettlementAmountAwardedFromOtherPartyAnnualInterestRate_label_en-US" xlink:label="lab_ago_LitigationSettlementAmountAwardedFromOtherPartyAnnualInterestRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Litigation Settlement, Amount Awarded from Other Party, Annual Interest Rate</link:label>
    <link:label id="lab_ago_LitigationSettlementAmountAwardedFromOtherPartyAnnualInterestRate_documentation_en-US" xlink:label="lab_ago_LitigationSettlementAmountAwardedFromOtherPartyAnnualInterestRate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Litigation Settlement, Amount Awarded from Other Party, Annual Interest Rate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_LitigationSettlementAmountAwardedFromOtherPartyAnnualInterestRate" xlink:href="ago-20240630.xsd#ago_LitigationSettlementAmountAwardedFromOtherPartyAnnualInterestRate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_LitigationSettlementAmountAwardedFromOtherPartyAnnualInterestRate" xlink:to="lab_ago_LitigationSettlementAmountAwardedFromOtherPartyAnnualInterestRate" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationGrossClaimLiabilitySubtotalAbstract_3244ec1f-3937-4dec-baa0-39d0fdb458ab_terseLabel_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationGrossClaimLiabilitySubtotalAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subtotal</link:label>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationGrossClaimLiabilitySubtotalAbstract_label_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationGrossClaimLiabilitySubtotalAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations with Credit Deterioration Gross Claim Liability Subtotal [Abstract]</link:label>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationGrossClaimLiabilitySubtotalAbstract_documentation_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationGrossClaimLiabilitySubtotalAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">-- None. No documentation exists for this element. --</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationGrossClaimLiabilitySubtotalAbstract" xlink:href="ago-20240630.xsd#ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationGrossClaimLiabilitySubtotalAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationGrossClaimLiabilitySubtotalAbstract" xlink:to="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationGrossClaimLiabilitySubtotalAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_StatementEquityComponentsAxis_e2f51157-3f73-4ad2-a1f3-7df363762554_terseLabel_en-US" xlink:label="lab_us-gaap_StatementEquityComponentsAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity Components [Axis]</link:label>
    <link:label id="lab_us-gaap_StatementEquityComponentsAxis_label_en-US" xlink:label="lab_us-gaap_StatementEquityComponentsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity Components [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementEquityComponentsAxis" xlink:to="lab_us-gaap_StatementEquityComponentsAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_PercentageOfCDSContractsFairValuedUsingMinimumPremium_769b38d7-f85c-4935-8ccf-859a75796f66_terseLabel_en-US" xlink:label="lab_ago_PercentageOfCDSContractsFairValuedUsingMinimumPremium" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage of CDS contracts fair valued using minimum premium</link:label>
    <link:label id="lab_ago_PercentageOfCDSContractsFairValuedUsingMinimumPremium_label_en-US" xlink:label="lab_ago_PercentageOfCDSContractsFairValuedUsingMinimumPremium" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Percentage of CDS Contracts Fair Valued Using Minimum Premium</link:label>
    <link:label id="lab_ago_PercentageOfCDSContractsFairValuedUsingMinimumPremium_documentation_en-US" xlink:label="lab_ago_PercentageOfCDSContractsFairValuedUsingMinimumPremium" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of CDS Contracts Fair Valued Using Minimum Premium</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_PercentageOfCDSContractsFairValuedUsingMinimumPremium" xlink:href="ago-20240630.xsd#ago_PercentageOfCDSContractsFairValuedUsingMinimumPremium"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_PercentageOfCDSContractsFairValuedUsingMinimumPremium" xlink:to="lab_ago_PercentageOfCDSContractsFairValuedUsingMinimumPremium" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InsuranceSecuritizationsMember_32d7a112-2672-4fb0-a291-6da8ab12e6bf_terseLabel_en-US" xlink:label="lab_ago_InsuranceSecuritizationsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Insurance securitizations</link:label>
    <link:label id="lab_ago_InsuranceSecuritizationsMember_label_en-US" xlink:label="lab_ago_InsuranceSecuritizationsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insurance Securitizations [Member]</link:label>
    <link:label id="lab_ago_InsuranceSecuritizationsMember_documentation_en-US" xlink:label="lab_ago_InsuranceSecuritizationsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Insurance Securitizations</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuranceSecuritizationsMember" xlink:href="ago-20240630.xsd#ago_InsuranceSecuritizationsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InsuranceSecuritizationsMember" xlink:to="lab_ago_InsuranceSecuritizationsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_4afb87ef-eb4a-4d5e-97cb-678c621e7b42_periodStartLabel_en-US" xlink:label="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Fair value at beginning of period</link:label>
    <link:label id="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_03caabf2-c7a8-4ae2-9512-1bdf33116e16_periodEndLabel_en-US" xlink:label="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Fair value at end of period</link:label>
    <link:label id="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_label_en-US" xlink:label="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue" xlink:to="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_VariableInterestEntityConsolidatedCarryingAmountLiabilitiesWithRecourse_8076201f-74a4-4d18-8907-d1e44476b557_terseLabel_en-US" xlink:label="lab_ago_VariableInterestEntityConsolidatedCarryingAmountLiabilitiesWithRecourse" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial guaranty variable interest entities' liabilities, with recourse</link:label>
    <link:label id="lab_ago_VariableInterestEntityConsolidatedCarryingAmountLiabilitiesWithRecourse_label_en-US" xlink:label="lab_ago_VariableInterestEntityConsolidatedCarryingAmountLiabilitiesWithRecourse" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable Interest Entity, Consolidated, Carrying Amount, Liabilities, With Recourse</link:label>
    <link:label id="lab_ago_VariableInterestEntityConsolidatedCarryingAmountLiabilitiesWithRecourse_documentation_en-US" xlink:label="lab_ago_VariableInterestEntityConsolidatedCarryingAmountLiabilitiesWithRecourse" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Variable Interest Entity, Consolidated, Carrying Amount, Liabilities, With Recourse</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_VariableInterestEntityConsolidatedCarryingAmountLiabilitiesWithRecourse" xlink:href="ago-20240630.xsd#ago_VariableInterestEntityConsolidatedCarryingAmountLiabilitiesWithRecourse"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_VariableInterestEntityConsolidatedCarryingAmountLiabilitiesWithRecourse" xlink:to="lab_ago_VariableInterestEntityConsolidatedCarryingAmountLiabilitiesWithRecourse" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_PreTaxIncomeAndRevenueTable_3a43fe3f-7daa-486c-9504-9b6886e7414a_terseLabel_en-US" xlink:label="lab_ago_PreTaxIncomeAndRevenueTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pre-tax Income and Revenue [Table]</link:label>
    <link:label id="lab_ago_PreTaxIncomeAndRevenueTable_label_en-US" xlink:label="lab_ago_PreTaxIncomeAndRevenueTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pre-tax Income and Revenue [Table]</link:label>
    <link:label id="lab_ago_PreTaxIncomeAndRevenueTable_documentation_en-US" xlink:label="lab_ago_PreTaxIncomeAndRevenueTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule reflecting pertinent information, such as tax authority, amount of pretax income (loss), and revenues.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_PreTaxIncomeAndRevenueTable" xlink:href="ago-20240630.xsd#ago_PreTaxIncomeAndRevenueTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_PreTaxIncomeAndRevenueTable" xlink:to="lab_ago_PreTaxIncomeAndRevenueTable" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_InvestmentTypeCategorizationMember_e9bec128-0245-4ce3-8225-f193f2e19fee_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentTypeCategorizationMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investments [Domain]</link:label>
    <link:label id="lab_us-gaap_InvestmentTypeCategorizationMember_label_en-US" xlink:label="lab_us-gaap_InvestmentTypeCategorizationMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investments [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InvestmentTypeCategorizationMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember" xlink:to="lab_us-gaap_InvestmentTypeCategorizationMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_EarningsPerShareDilutedAbstract_4b351405-da84-4c3a-a3b6-a641eff5a6d0_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareDilutedAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Diluted EPS:</link:label>
    <link:label id="lab_us-gaap_EarningsPerShareDilutedAbstract_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareDilutedAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings Per Share, Diluted [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDilutedAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EarningsPerShareDilutedAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract" xlink:to="lab_us-gaap_EarningsPerShareDilutedAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_PuertoRicoTrustsMember_ade6c120-b4ed-4902-8aea-e49f16e465fc_terseLabel_en-US" xlink:label="lab_ago_PuertoRicoTrustsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Puerto Rico Trusts</link:label>
    <link:label id="lab_ago_PuertoRicoTrustsMember_label_en-US" xlink:label="lab_ago_PuertoRicoTrustsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Puerto Rico Trusts [Member]</link:label>
    <link:label id="lab_ago_PuertoRicoTrustsMember_documentation_en-US" xlink:label="lab_ago_PuertoRicoTrustsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Puerto Rico Trusts</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_PuertoRicoTrustsMember" xlink:href="ago-20240630.xsd#ago_PuertoRicoTrustsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_PuertoRicoTrustsMember" xlink:to="lab_ago_PuertoRicoTrustsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_fb4e3cfd-cf11-4beb-94a1-d27dadf40cfd_terseLabel_en-US" xlink:label="lab_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Supplemental disclosure of non-cash activities:</link:label>
    <link:label id="lab_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_label_en-US" xlink:label="lab_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract" xlink:to="lab_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsSecondQuarterAfterPeriodEnd_39c03c80-2b81-49f6-a706-764e746a8875_terseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsSecondQuarterAfterPeriodEnd" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2024 (October 1 - December 31)</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsSecondQuarterAfterPeriodEnd_label_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsSecondQuarterAfterPeriodEnd" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Contractual Payments, Second Quarter After Period End</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsSecondQuarterAfterPeriodEnd_documentation_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsSecondQuarterAfterPeriodEnd" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Contractual Payments, Second Quarter After Period End</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsSecondQuarterAfterPeriodEnd" xlink:href="ago-20240630.xsd#ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsSecondQuarterAfterPeriodEnd"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsSecondQuarterAfterPeriodEnd" xlink:to="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsSecondQuarterAfterPeriodEnd" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInOtherComprehensiveIncomeLoss_bd8d5b5f-a3e4-43ee-b657-42b5903e5b9f_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInOtherComprehensiveIncomeLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other comprehensive income (loss)</link:label>
    <link:label id="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInOtherComprehensiveIncomeLoss_label_en-US" xlink:label="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInOtherComprehensiveIncomeLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Other Comprehensive Income (Loss)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInOtherComprehensiveIncomeLoss" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInOtherComprehensiveIncomeLoss"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInOtherComprehensiveIncomeLoss" xlink:to="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInOtherComprehensiveIncomeLoss" xlink:type="arc" order="1"/>
    <link:label id="lab_srt_StatementGeographicalAxis_96438dd4-d53e-4f7c-a649-2197e3436492_terseLabel_en-US" xlink:label="lab_srt_StatementGeographicalAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Geographical [Axis]</link:label>
    <link:label id="lab_srt_StatementGeographicalAxis_label_en-US" xlink:label="lab_srt_StatementGeographicalAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Geographical [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_StatementGeographicalAxis"/>
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    <link:label id="lab_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities_a52914c0-9dda-4143-9f08-5bae8cb0ea5e_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maturities and paydowns</link:label>
    <link:label id="lab_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities_label_en-US" xlink:label="lab_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities"/>
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    <link:label id="lab_us-gaap_DeferredTaxAssetsLiabilitiesNet_4fa1ceda-1978-4e30-9865-de4addce06d3_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredTaxAssetsLiabilitiesNet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net deferred tax assets (liabilities)</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsLiabilitiesNet" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsLiabilitiesNet"/>
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    <link:label id="lab_srt_WeightedAverageMember_f581b0c0-5a6d-4373-bf9f-cda80ff574b5_terseLabel_en-US" xlink:label="lab_srt_WeightedAverageMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted Average</link:label>
    <link:label id="lab_srt_WeightedAverageMember_label_en-US" xlink:label="lab_srt_WeightedAverageMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Weighted Average [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_WeightedAverageMember" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_WeightedAverageMember"/>
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    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsClaimLiabilityWeightedAverageRiskFreeDiscountRate_d92e966d-54d6-4dc3-8b54-a9b5d2ae451f_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsClaimLiabilityWeightedAverageRiskFreeDiscountRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted average risk-free rates for U.S. dollar denominated financial guaranty insurance obligations</link:label>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsClaimLiabilityWeightedAverageRiskFreeDiscountRate_label_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsClaimLiabilityWeightedAverageRiskFreeDiscountRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contract, Claim Liability, Weighted-Average Risk-Free Discount Rate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialGuaranteeInsuranceContractsClaimLiabilityWeightedAverageRiskFreeDiscountRate" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancialGuaranteeInsuranceContractsClaimLiabilityWeightedAverageRiskFreeDiscountRate"/>
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    <link:label id="lab_ecd_EqtyAwrdsInSummryCompstnTblForAplblYrMember_terseLabel_en-US" xlink:label="lab_ecd_EqtyAwrdsInSummryCompstnTblForAplblYrMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ecd_EqtyAwrdsInSummryCompstnTblForAplblYrMember" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_EqtyAwrdsInSummryCompstnTblForAplblYrMember"/>
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    <link:label id="lab_us-gaap_LossContingencyAccrualAtCarryingValue_9eb80aaf-82f2-4ee0-9650-89b4ced7234a_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingencyAccrualAtCarryingValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss contingency accrual</link:label>
    <link:label id="lab_us-gaap_LossContingencyAccrualAtCarryingValue_label_en-US" xlink:label="lab_us-gaap_LossContingencyAccrualAtCarryingValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Contingency Accrual</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyAccrualAtCarryingValue" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LossContingencyAccrualAtCarryingValue"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingencyAccrualAtCarryingValue" xlink:to="lab_us-gaap_LossContingencyAccrualAtCarryingValue" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_6441a0e9-0e8c-40e7-b119-9d62405024d5_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-sale [Line Items]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_label_en-US" xlink:label="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-Sale [Line Items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_MoreStressfulEnvironmentMember_625f1cae-2324-4c4c-8315-fe9fc66f436a_terseLabel_en-US" xlink:label="lab_ago_MoreStressfulEnvironmentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">More Stressful Environment</link:label>
    <link:label id="lab_ago_MoreStressfulEnvironmentMember_label_en-US" xlink:label="lab_ago_MoreStressfulEnvironmentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">More Stressful Environment [Member]</link:label>
    <link:label id="lab_ago_MoreStressfulEnvironmentMember_documentation_en-US" xlink:label="lab_ago_MoreStressfulEnvironmentMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">More Stressful Environment [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_MoreStressfulEnvironmentMember" xlink:href="ago-20240630.xsd#ago_MoreStressfulEnvironmentMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_MoreStressfulEnvironmentMember" xlink:to="lab_ago_MoreStressfulEnvironmentMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_SpecialtyBusinessGrossPar_27b346a0-808a-446f-a0d4-f568011ff5ee_terseLabel_en-US" xlink:label="lab_ago_SpecialtyBusinessGrossPar" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Residual value insurance policies exposure downgraded</link:label>
    <link:label id="lab_ago_SpecialtyBusinessGrossPar_52a5a997-60c1-4456-8d11-938b31eac3ca_verboseLabel_en-US" xlink:label="lab_ago_SpecialtyBusinessGrossPar" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Gross Exposure</link:label>
    <link:label id="lab_ago_SpecialtyBusinessGrossPar_label_en-US" xlink:label="lab_ago_SpecialtyBusinessGrossPar" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Specialty Business, Gross Par</link:label>
    <link:label id="lab_ago_SpecialtyBusinessGrossPar_documentation_en-US" xlink:label="lab_ago_SpecialtyBusinessGrossPar" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Specialty Business, Gross Par</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_SpecialtyBusinessGrossPar" xlink:href="ago-20240630.xsd#ago_SpecialtyBusinessGrossPar"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_SpecialtyBusinessGrossPar" xlink:to="lab_ago_SpecialtyBusinessGrossPar" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InsuredFinancialObligationsInsuredCreditPerformanceofGuaranteedObligationsTerm_5ac80cca-ddd3-4d59-99de-ae63e1eaafb6_terseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsInsuredCreditPerformanceofGuaranteedObligationsTerm" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Period of insured credit performance of guaranteed obligations (in some cases over)</link:label>
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    <link:label id="lab_ago_InsuredFinancialObligationsInsuredCreditPerformanceofGuaranteedObligationsTerm_documentation_en-US" xlink:label="lab_ago_InsuredFinancialObligationsInsuredCreditPerformanceofGuaranteedObligationsTerm" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Insured Credit Performance of Guaranteed Obligations, Term</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuredFinancialObligationsInsuredCreditPerformanceofGuaranteedObligationsTerm" xlink:href="ago-20240630.xsd#ago_InsuredFinancialObligationsInsuredCreditPerformanceofGuaranteedObligationsTerm"/>
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    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition_5b48de6f-85e5-48c0-bfbc-a9ed1147abe9_totalLabel_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Fair Value</link:label>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition_label_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-Sale, Unrealized Loss Position</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition"/>
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    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsUnearnedPremiumRevenueExcludingClaimsPaidNotYetExpensedNet_d29b95a3-ae31-4149-b72f-a8e1d041c974_totalLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsUnearnedPremiumRevenueExcludingClaimsPaidNotYetExpensedNet" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsUnearnedPremiumRevenueExcludingClaimsPaidNotYetExpensedNet_label_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsUnearnedPremiumRevenueExcludingClaimsPaidNotYetExpensedNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Unearned Premium Revenue, Excluding Claims Paid Not Yet Expensed, Net</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsUnearnedPremiumRevenueExcludingClaimsPaidNotYetExpensedNet_documentation_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsUnearnedPremiumRevenueExcludingClaimsPaidNotYetExpensedNet" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of unearned premium revenue in the statement of financial position for financial guaranty insurance contracts, net of the unexpired portion of premiums ceded and before adjustment for loss claims paid but not yet expensed.</link:label>
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    <link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_63e1d91e-d172-455a-bf98-1a6926a5cda2_periodStartLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents and restricted cash at beginning of period</link:label>
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    <link:label id="lab_ago_NoncashDistributionsToNoncontrollingInterests_ae4d46f2-7ab4-4643-a04d-489c12185c00_terseLabel_en-US" xlink:label="lab_ago_NoncashDistributionsToNoncontrollingInterests" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Distributions to noncontrolling interests</link:label>
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    <link:label id="lab_ago_ConditionalDefaultRateNumberOfCurves_832adbd6-d160-43c3-b3a2-e3ef037f8047_terseLabel_en-US" xlink:label="lab_ago_ConditionalDefaultRateNumberOfCurves" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of conditional default rate curves modeled in estimating losses</link:label>
    <link:label id="lab_ago_ConditionalDefaultRateNumberOfCurves_label_en-US" xlink:label="lab_ago_ConditionalDefaultRateNumberOfCurves" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Conditional Default Rate, Number of Curves</link:label>
    <link:label id="lab_ago_ConditionalDefaultRateNumberOfCurves_documentation_en-US" xlink:label="lab_ago_ConditionalDefaultRateNumberOfCurves" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the number of possible conditional default rate curves modeled and probability weighted in estimating loss on insured obligations.</link:label>
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    <link:label id="lab_ago_FairValueMarketMultiplePriceToBook_4318b52c-b943-41da-95e8-17de88cf6daf_terseLabel_en-US" xlink:label="lab_ago_FairValueMarketMultiplePriceToBook" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Market multiple-price to book</link:label>
    <link:label id="lab_ago_FairValueMarketMultiplePriceToBook_label_en-US" xlink:label="lab_ago_FairValueMarketMultiplePriceToBook" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Market Multiple, Price to Book</link:label>
    <link:label id="lab_ago_FairValueMarketMultiplePriceToBook_documentation_en-US" xlink:label="lab_ago_FairValueMarketMultiplePriceToBook" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fair Value, Market Multiple, Price to Book</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FairValueMarketMultiplePriceToBook" xlink:to="lab_ago_FairValueMarketMultiplePriceToBook" xlink:type="arc" order="1"/>
    <link:label id="lab_srt_ConsolidationItemsAxis_504eeb8c-4b29-4089-8dd8-c76fe0e5e990_terseLabel_en-US" xlink:label="lab_srt_ConsolidationItemsAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Consolidation Items [Axis]</link:label>
    <link:label id="lab_srt_ConsolidationItemsAxis_label_en-US" xlink:label="lab_srt_ConsolidationItemsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Consolidation Items [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ConsolidationItemsAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ConsolidationItemsAxis" xlink:to="lab_srt_ConsolidationItemsAxis" xlink:type="arc" order="1"/>
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    <link:label id="lab_us-gaap_FairValueOfFinancialInstrumentsPolicy_label_en-US" xlink:label="lab_us-gaap_FairValueOfFinancialInstrumentsPolicy" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value of Financial Instruments, Policy [Policy Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueOfFinancialInstrumentsPolicy" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueOfFinancialInstrumentsPolicy"/>
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    <link:label id="lab_ago_ForeignCurrencyConcentrationRiskMember_71d966cf-d177-46d9-8f6f-84df2ccde637_terseLabel_en-US" xlink:label="lab_ago_ForeignCurrencyConcentrationRiskMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Foreign Currency Concentration Risk</link:label>
    <link:label id="lab_ago_ForeignCurrencyConcentrationRiskMember_label_en-US" xlink:label="lab_ago_ForeignCurrencyConcentrationRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Foreign Currency Concentration Risk [Member]</link:label>
    <link:label id="lab_ago_ForeignCurrencyConcentrationRiskMember_documentation_en-US" xlink:label="lab_ago_ForeignCurrencyConcentrationRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Foreign Currency Concentration Risk [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ForeignCurrencyConcentrationRiskMember" xlink:href="ago-20240630.xsd#ago_ForeignCurrencyConcentrationRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ForeignCurrencyConcentrationRiskMember" xlink:to="lab_ago_ForeignCurrencyConcentrationRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_HoldingCompanieswithOutstandingPublicDebtNumber_35aa2f54-816e-4fda-8df5-b737eb7abb96_terseLabel_en-US" xlink:label="lab_ago_HoldingCompanieswithOutstandingPublicDebtNumber" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of holding companies with outstanding public debt</link:label>
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    <link:label id="lab_ago_HoldingCompanieswithOutstandingPublicDebtNumber_documentation_en-US" xlink:label="lab_ago_HoldingCompanieswithOutstandingPublicDebtNumber" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Holding Companies with Outstanding Public Debt, Number</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_HoldingCompanieswithOutstandingPublicDebtNumber" xlink:href="ago-20240630.xsd#ago_HoldingCompanieswithOutstandingPublicDebtNumber"/>
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    <link:label id="lab_ago_AssuredGuarantySubsidiariesMember_6f3cd1ff-d0bf-498f-95db-3bd3234b7a41_terseLabel_en-US" xlink:label="lab_ago_AssuredGuarantySubsidiariesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">AGL Subsidiaries</link:label>
    <link:label id="lab_ago_AssuredGuarantySubsidiariesMember_label_en-US" xlink:label="lab_ago_AssuredGuarantySubsidiariesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assured Guaranty Subsidiaries [Member]</link:label>
    <link:label id="lab_ago_AssuredGuarantySubsidiariesMember_documentation_en-US" xlink:label="lab_ago_AssuredGuarantySubsidiariesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Assured Guaranty Subsidiaries [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_AssuredGuarantySubsidiariesMember" xlink:href="ago-20240630.xsd#ago_AssuredGuarantySubsidiariesMember"/>
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    <link:label id="lab_srt_ArithmeticAverageMember_67eebd7f-8709-49e4-b27e-f966259c5ed7_terseLabel_en-US" xlink:label="lab_srt_ArithmeticAverageMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Average</link:label>
    <link:label id="lab_srt_ArithmeticAverageMember_label_en-US" xlink:label="lab_srt_ArithmeticAverageMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Arithmetic Average [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ArithmeticAverageMember" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ArithmeticAverageMember"/>
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    <link:label id="lab_ecd_ForgoneRecoveryDueToDisqualificationOfTaxBenefitsAmt_terseLabel_en-US" xlink:label="lab_ecd_ForgoneRecoveryDueToDisqualificationOfTaxBenefitsAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Forgone Recovery due to Disqualification of Tax Benefits, Amount</link:label>
    <link:label id="lab_ecd_ForgoneRecoveryDueToDisqualificationOfTaxBenefitsAmt_label_en-US" xlink:label="lab_ecd_ForgoneRecoveryDueToDisqualificationOfTaxBenefitsAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Forgone Recovery due to Disqualification of Tax Benefits, Amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_ForgoneRecoveryDueToDisqualificationOfTaxBenefitsAmt" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_ForgoneRecoveryDueToDisqualificationOfTaxBenefitsAmt"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_ForgoneRecoveryDueToDisqualificationOfTaxBenefitsAmt" xlink:to="lab_ecd_ForgoneRecoveryDueToDisqualificationOfTaxBenefitsAmt" xlink:type="arc" order="1"/>
    <link:label id="lab_srt_ProductsAndServicesDomain_52130fdc-f02e-46bd-bcb1-bd11b8ce2f40_terseLabel_en-US" xlink:label="lab_srt_ProductsAndServicesDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Insurance Product Line [Domain]</link:label>
    <link:label id="lab_srt_ProductsAndServicesDomain_label_en-US" xlink:label="lab_srt_ProductsAndServicesDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Product and Service [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductsAndServicesDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ProductsAndServicesDomain" xlink:to="lab_srt_ProductsAndServicesDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FairValueGainsLossesOnCommittedCapitalSecuritiesMember_14436e1b-d4d0-4290-8d84-016583c90091_terseLabel_en-US" xlink:label="lab_ago_FairValueGainsLossesOnCommittedCapitalSecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair value gains (losses) on CCS</link:label>
    <link:label id="lab_ago_FairValueGainsLossesOnCommittedCapitalSecuritiesMember_label_en-US" xlink:label="lab_ago_FairValueGainsLossesOnCommittedCapitalSecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Gains (Losses) on Committed Capital Securities [Member]</link:label>
    <link:label id="lab_ago_FairValueGainsLossesOnCommittedCapitalSecuritiesMember_documentation_en-US" xlink:label="lab_ago_FairValueGainsLossesOnCommittedCapitalSecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fair Value Gains (Losses) on Committed Capital Securities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FairValueGainsLossesOnCommittedCapitalSecuritiesMember" xlink:href="ago-20240630.xsd#ago_FairValueGainsLossesOnCommittedCapitalSecuritiesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FairValueGainsLossesOnCommittedCapitalSecuritiesMember" xlink:to="lab_ago_FairValueGainsLossesOnCommittedCapitalSecuritiesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember_25c0947b-cc7e-47e2-9871-0b3a51d06aea_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Credit derivative liabilities, net</link:label>
    <link:label id="lab_us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember_label_en-US" xlink:label="lab_us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Financial Instruments, Liabilities [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember" xlink:to="lab_us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueDisclosuresAbstract_9ca8ecbd-e69b-4d0a-aa38-56bddae4c282_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueDisclosuresAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value Disclosures [Abstract]</link:label>
    <link:label id="lab_us-gaap_FairValueDisclosuresAbstract_label_en-US" xlink:label="lab_us-gaap_FairValueDisclosuresAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Disclosures [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosuresAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueDisclosuresAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueDisclosuresAbstract" xlink:to="lab_us-gaap_FairValueDisclosuresAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_IncomeApproachValuationTechniqueMember_cc71e0ee-fbf7-4e88-b818-bcc7ddbc630c_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeApproachValuationTechniqueMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Valuation, Income Approach</link:label>
    <link:label id="lab_us-gaap_IncomeApproachValuationTechniqueMember_label_en-US" xlink:label="lab_us-gaap_IncomeApproachValuationTechniqueMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Valuation, Income Approach [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeApproachValuationTechniqueMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeApproachValuationTechniqueMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeApproachValuationTechniqueMember" xlink:to="lab_us-gaap_IncomeApproachValuationTechniqueMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss_47109320-9b27-43f0-9fa5-998589de0179_verboseLabel_en-US" xlink:label="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Change in unrealized gains/(losses) related to financial instruments held</link:label>
    <link:label id="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss_label_en-US" xlink:label="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss"/>
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    <link:label id="lab_us-gaap_SurveillanceCategoryDomain_fe9a7cda-84c3-4517-be41-593b91bbebfe_terseLabel_en-US" xlink:label="lab_us-gaap_SurveillanceCategoryDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Surveillance Category [Domain]</link:label>
    <link:label id="lab_us-gaap_SurveillanceCategoryDomain_label_en-US" xlink:label="lab_us-gaap_SurveillanceCategoryDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Surveillance Category [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SurveillanceCategoryDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SurveillanceCategoryDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SurveillanceCategoryDomain" xlink:to="lab_us-gaap_SurveillanceCategoryDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_TotalPretaxRealizedAndUnrealizedGainsLossesRecordedAsAssetsAbstract_e31ff5ca-ae25-4c7c-8412-ed9fdc396055_terseLabel_en-US" xlink:label="lab_ago_TotalPretaxRealizedAndUnrealizedGainsLossesRecordedAsAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total pre-tax realized and unrealized gains (losses) recorded in:</link:label>
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    <link:label id="lab_ago_TotalPretaxRealizedAndUnrealizedGainsLossesRecordedAsAssetsAbstract_documentation_en-US" xlink:label="lab_ago_TotalPretaxRealizedAndUnrealizedGainsLossesRecordedAsAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Total Pretax Realized And Unrealized Gains (Losses) Recorded As Assets [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_TotalPretaxRealizedAndUnrealizedGainsLossesRecordedAsAssetsAbstract" xlink:href="ago-20240630.xsd#ago_TotalPretaxRealizedAndUnrealizedGainsLossesRecordedAsAssetsAbstract"/>
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    <link:label id="lab_ago_FinancingReceivablesBankruptcyMember_be5b0d5d-3945-418c-bef5-3af52680075f_terseLabel_en-US" xlink:label="lab_ago_FinancingReceivablesBankruptcyMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Bankruptcy</link:label>
    <link:label id="lab_ago_FinancingReceivablesBankruptcyMember_label_en-US" xlink:label="lab_ago_FinancingReceivablesBankruptcyMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Receivables, Bankruptcy [Member]</link:label>
    <link:label id="lab_ago_FinancingReceivablesBankruptcyMember_documentation_en-US" xlink:label="lab_ago_FinancingReceivablesBankruptcyMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financing Receivables, Bankruptcy [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancingReceivablesBankruptcyMember" xlink:href="ago-20240630.xsd#ago_FinancingReceivablesBankruptcyMember"/>
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    <link:label id="lab_dei_SecurityExchangeName_15e0cd3b-6eff-40d7-82ee-261482e94059_terseLabel_en-US" xlink:label="lab_dei_SecurityExchangeName" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Security Exchange Name</link:label>
    <link:label id="lab_dei_SecurityExchangeName_label_en-US" xlink:label="lab_dei_SecurityExchangeName" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Security Exchange Name</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_SecurityExchangeName"/>
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    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearFiveToNine_16372dba-c424-49f1-b1f8-c7a733ccef28_terseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearFiveToNine" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2029-2033</link:label>
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    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsNetOfTaxAbstract_ef637323-8a73-4be1-b214-2bff70ecf340_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsNetOfTaxAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Change in net unrealized gains (losses) on:</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsNetOfTaxAbstract_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsNetOfTaxAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">OCI, Debt Securities, Available-for-Sale, Gain (Loss), before Adjustment, after Tax [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsNetOfTaxAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsNetOfTaxAbstract"/>
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    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossTableTextBlock_14f694c0-de74-4fc2-b8e1-fdf3b3384e7b_terseLabel_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Rollforward of Credit Losses for Available-for-sale Fixed-Maturity Securities</link:label>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossTableTextBlock_label_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-Sale, Allowance for Credit Loss [Table Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossTableTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossTableTextBlock"/>
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    <link:label id="lab_us-gaap_RelatedPartyTransactionDomain_ddf120bc-ddf6-49ad-bad9-33c9982a5e58_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Related Party Transaction [Domain]</link:label>
    <link:label id="lab_us-gaap_RelatedPartyTransactionDomain_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Related Party Transaction [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyTransactionDomain"/>
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    <link:label id="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_label_en-US" xlink:label="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reclassification out of Accumulated Other Comprehensive Income [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember"/>
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    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionDeferredLoanBalancesToBeRecoveredPercent_39e829ba-9cd8-41db-ab3b-9a01a0f7be07_terseLabel_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionDeferredLoanBalancesToBeRecoveredPercent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percent of deferred loan balances to be recovered</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ago_GuarantorObligationsProjectedLossAssumptionDeferredLoanBalancesToBeRecoveredPercent" xlink:href="ago-20240630.xsd#ago_GuarantorObligationsProjectedLossAssumptionDeferredLoanBalancesToBeRecoveredPercent"/>
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    <link:label id="lab_us-gaap_FixedMaturitiesMember_48baf473-808e-476b-ab44-ef26e5ccf5d3_terseLabel_en-US" xlink:label="lab_us-gaap_FixedMaturitiesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fixed-maturity securities, available-for-sale</link:label>
    <link:label id="lab_us-gaap_FixedMaturitiesMember_label_en-US" xlink:label="lab_us-gaap_FixedMaturitiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fixed Maturities [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FixedMaturitiesMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FixedMaturitiesMember"/>
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    <link:label id="lab_ago_InsuredFinancialObligationsClaimLiabilityRiskFreeDiscountRate_label_en-US" xlink:label="lab_ago_InsuredFinancialObligationsClaimLiabilityRiskFreeDiscountRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Claim Liability, Risk Free Discount Rate</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsClaimLiabilityRiskFreeDiscountRate_documentation_en-US" xlink:label="lab_ago_InsuredFinancialObligationsClaimLiabilityRiskFreeDiscountRate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Claim Liability, Risk Free Discount Rate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuredFinancialObligationsClaimLiabilityRiskFreeDiscountRate" xlink:href="ago-20240630.xsd#ago_InsuredFinancialObligationsClaimLiabilityRiskFreeDiscountRate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InsuredFinancialObligationsClaimLiabilityRiskFreeDiscountRate" xlink:to="lab_ago_InsuredFinancialObligationsClaimLiabilityRiskFreeDiscountRate" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_IncomeTaxReconciliationTaxExemptIncome_217a2d28-715f-4589-8ff3-4c1be1e69ff5_negatedLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationTaxExemptIncome" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Tax-exempt interest</link:label>
    <link:label id="lab_us-gaap_IncomeTaxReconciliationTaxExemptIncome_label_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationTaxExemptIncome" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationTaxExemptIncome" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxReconciliationTaxExemptIncome"/>
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    <link:label id="lab_ago_ScheduleofNonFinancialGuarantyExposureTableTextBlock_54e0dee1-41d7-4c5b-a763-9c785129fb99_terseLabel_en-US" xlink:label="lab_ago_ScheduleofNonFinancialGuarantyExposureTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Non-Financial Guaranty Exposure</link:label>
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    <link:label id="lab_ago_ScheduleofNonFinancialGuarantyExposureTableTextBlock_documentation_en-US" xlink:label="lab_ago_ScheduleofNonFinancialGuarantyExposureTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule of Non-Financial Guaranty Exposure [Table Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ScheduleofNonFinancialGuarantyExposureTableTextBlock" xlink:href="ago-20240630.xsd#ago_ScheduleofNonFinancialGuarantyExposureTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ScheduleofNonFinancialGuarantyExposureTableTextBlock" xlink:to="lab_ago_ScheduleofNonFinancialGuarantyExposureTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InternalNoninvestmentGradeLevel1Member_bacb6e72-3916-40d1-b3c0-1a07c1b9e3bb_terseLabel_en-US" xlink:label="lab_ago_InternalNoninvestmentGradeLevel1Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">BIG&#160;1</link:label>
    <link:label id="lab_ago_InternalNoninvestmentGradeLevel1Member_label_en-US" xlink:label="lab_ago_InternalNoninvestmentGradeLevel1Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Internal Noninvestment Grade, Level 1 [Member]</link:label>
    <link:label id="lab_ago_InternalNoninvestmentGradeLevel1Member_documentation_en-US" xlink:label="lab_ago_InternalNoninvestmentGradeLevel1Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the below investment grade transactions showing sufficient deterioration to make lifetime losses possible, but for which none are currently expected. Transactions on which claims have been paid but are expected to be fully reimbursed (other than investment grade transactions on which only liquidity claims have been paid) are in this category.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InternalNoninvestmentGradeLevel1Member" xlink:href="ago-20240630.xsd#ago_InternalNoninvestmentGradeLevel1Member"/>
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    <link:label id="lab_ago_ScheduleofInsuredContractualPaymentsOutstandingTableTextBlock_03da047f-10ff-4c43-90d4-9761fdef8dae_terseLabel_en-US" xlink:label="lab_ago_ScheduleofInsuredContractualPaymentsOutstandingTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Service Outstanding</link:label>
    <link:label id="lab_ago_ScheduleofInsuredContractualPaymentsOutstandingTableTextBlock_label_en-US" xlink:label="lab_ago_ScheduleofInsuredContractualPaymentsOutstandingTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Insured Contractual Payments Outstanding [Table Text Block]</link:label>
    <link:label id="lab_ago_ScheduleofInsuredContractualPaymentsOutstandingTableTextBlock_documentation_en-US" xlink:label="lab_ago_ScheduleofInsuredContractualPaymentsOutstandingTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tabular disclosure of the outstanding amounts of the insured contractual payments (principal and interest) outstanding on the underlying the entity's financial guaranty contracts, prior to and net of cessions</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ScheduleofInsuredContractualPaymentsOutstandingTableTextBlock" xlink:href="ago-20240630.xsd#ago_ScheduleofInsuredContractualPaymentsOutstandingTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ScheduleofInsuredContractualPaymentsOutstandingTableTextBlock" xlink:to="lab_ago_ScheduleofInsuredContractualPaymentsOutstandingTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThanFiveAndWithin10YearsFromBalanceSheetDate_9cd92fa3-129a-4c8c-bf7c-301532a3a477_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThanFiveAndWithin10YearsFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2029-2033</link:label>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThanFiveAndWithin10YearsFromBalanceSheetDate_label_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThanFiveAndWithin10YearsFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contract, Premium Revenue to be Recognized, after Year 5 Through 10</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThanFiveAndWithin10YearsFromBalanceSheetDate" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThanFiveAndWithin10YearsFromBalanceSheetDate"/>
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    <link:label id="lab_us-gaap_OtherCommitment_e5e4e307-1f8f-42b6-811b-2499d66cfdba_terseLabel_en-US" xlink:label="lab_us-gaap_OtherCommitment" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Outstanding commitments to provide guaranties</link:label>
    <link:label id="lab_us-gaap_OtherCommitment_label_en-US" xlink:label="lab_us-gaap_OtherCommitment" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Commitment</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitment" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherCommitment"/>
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    <link:label id="lab_us-gaap_RealizedInvestmentGainsLosses_f68ebf80-b126-4e6b-a7f4-c2f3ba85ee99_verboseLabel_en-US" xlink:label="lab_us-gaap_RealizedInvestmentGainsLosses" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Net realized investment gains (losses)</link:label>
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    <link:label id="lab_us-gaap_SharesSubjectToMandatoryRedemptionSettlementTermsAmount_594e351b-9442-42ae-ab24-3a3f09c153e9_terseLabel_en-US" xlink:label="lab_us-gaap_SharesSubjectToMandatoryRedemptionSettlementTermsAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share value, amount</link:label>
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    <link:label id="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingPrincipal_label_en-US" xlink:label="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingPrincipal" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations with Credit Deterioration, Insured Contractual Payments Outstanding, Principal</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingPrincipal" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingPrincipal"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingPrincipal" xlink:to="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingPrincipal" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_InsuranceAbstract_f256e105-34d7-4dd5-9ea3-e7e55b8d1050_terseLabel_en-US" xlink:label="lab_us-gaap_InsuranceAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Insurance [Abstract]</link:label>
    <link:label id="lab_us-gaap_InsuranceAbstract_label_en-US" xlink:label="lab_us-gaap_InsuranceAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insurance [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InsuranceAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InsuranceAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InsuranceAbstract" xlink:to="lab_us-gaap_InsuranceAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3_903794e5-4956-415e-819e-c15173d8837b_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Transfers into Level 3</link:label>
    <link:label id="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3_label_en-US" xlink:label="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3" xlink:to="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_NoncashContributionsFromNoncontrollingInterests_d5608dd1-51c8-498b-ae50-c31d965471f6_terseLabel_en-US" xlink:label="lab_ago_NoncashContributionsFromNoncontrollingInterests" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contributions from noncontrolling interests</link:label>
    <link:label id="lab_ago_NoncashContributionsFromNoncontrollingInterests_label_en-US" xlink:label="lab_ago_NoncashContributionsFromNoncontrollingInterests" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Noncash, Contributions from Noncontrolling Interests</link:label>
    <link:label id="lab_ago_NoncashContributionsFromNoncontrollingInterests_documentation_en-US" xlink:label="lab_ago_NoncashContributionsFromNoncontrollingInterests" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Noncash, Contributions from Noncontrolling Interests</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_NoncashContributionsFromNoncontrollingInterests" xlink:href="ago-20240630.xsd#ago_NoncashContributionsFromNoncontrollingInterests"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_NoncashContributionsFromNoncontrollingInterests" xlink:to="lab_ago_NoncashContributionsFromNoncontrollingInterests" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FuturePremiumsToBeCollectedAbstract_ef17d039-1b5d-495f-85f2-a04f71d3703e_terseLabel_en-US" xlink:label="lab_ago_FuturePremiumsToBeCollectedAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Future Premiums to be Collected [Abstract]</link:label>
    <link:label id="lab_ago_FuturePremiumsToBeCollectedAbstract_label_en-US" xlink:label="lab_ago_FuturePremiumsToBeCollectedAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Future Premiums to be Collected [Abstract]</link:label>
    <link:label id="lab_ago_FuturePremiumsToBeCollectedAbstract_documentation_en-US" xlink:label="lab_ago_FuturePremiumsToBeCollectedAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Future Premiums to be Collected</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FuturePremiumsToBeCollectedAbstract" xlink:href="ago-20240630.xsd#ago_FuturePremiumsToBeCollectedAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FuturePremiumsToBeCollectedAbstract" xlink:to="lab_ago_FuturePremiumsToBeCollectedAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember_fba782de-6a1f-4e10-abf2-ee154ebc25a8_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ISCR on FG VIEs&#8217; Liabilities with Recourse</link:label>
    <link:label id="lab_us-gaap_AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember_label_en-US" xlink:label="lab_us-gaap_AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Gain (Loss), Financial Liability, Fair Value Option, Attributable to Parent [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember" xlink:to="lab_us-gaap_AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationTable_1788f794-c6d3-457d-8bb0-de4317c32130_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Table]</link:label>
    <link:label id="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationTable_label_en-US" xlink:label="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:to="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FairValueInputsInternalFloor_0c022481-341c-4500-b9c8-1a294b7ccd65_terseLabel_en-US" xlink:label="lab_ago_FairValueInputsInternalFloor" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Internal floor (in bps)</link:label>
    <link:label id="lab_ago_FairValueInputsInternalFloor_label_en-US" xlink:label="lab_ago_FairValueInputsInternalFloor" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Inputs Internal Floor</link:label>
    <link:label id="lab_ago_FairValueInputsInternalFloor_documentation_en-US" xlink:label="lab_ago_FairValueInputsInternalFloor" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fair Value Inputs Internal Floor</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FairValueInputsInternalFloor" xlink:href="ago-20240630.xsd#ago_FairValueInputsInternalFloor"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FairValueInputsInternalFloor" xlink:to="lab_ago_FairValueInputsInternalFloor" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_OperatingSegmentsAndCorporateNonSegmentMember_8ed86e39-7138-4ded-811f-81007cee6924_terseLabel_en-US" xlink:label="lab_ago_OperatingSegmentsAndCorporateNonSegmentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subtotal</link:label>
    <link:label id="lab_ago_OperatingSegmentsAndCorporateNonSegmentMember_label_en-US" xlink:label="lab_ago_OperatingSegmentsAndCorporateNonSegmentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Segments And Corporate Non Segment [Member]</link:label>
    <link:label id="lab_ago_OperatingSegmentsAndCorporateNonSegmentMember_documentation_en-US" xlink:label="lab_ago_OperatingSegmentsAndCorporateNonSegmentMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Operating Segments And Corporate Non Segment</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_OperatingSegmentsAndCorporateNonSegmentMember" xlink:href="ago-20240630.xsd#ago_OperatingSegmentsAndCorporateNonSegmentMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_OperatingSegmentsAndCorporateNonSegmentMember" xlink:to="lab_ago_OperatingSegmentsAndCorporateNonSegmentMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearTenToFourteen_61d23c6f-ef2e-4b33-9434-2331d3ab6c88_terseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearTenToFourteen" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2034-2038</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearTenToFourteen_label_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearTenToFourteen" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Principal Amount, Year Ten to Fourteen</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearTenToFourteen_documentation_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearTenToFourteen" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Principal Amount, Year Ten to Fourteen</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearTenToFourteen" xlink:href="ago-20240630.xsd#ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearTenToFourteen"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearTenToFourteen" xlink:to="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearTenToFourteen" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsPeriodtoReachIntermediateConditionalDefaultRate_086e3036-7d88-4a68-a040-14fb25103afe_verboseLabel_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsPeriodtoReachIntermediateConditionalDefaultRate" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Period from plateau to intermediate conditional default rate (in months)</link:label>
    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsPeriodtoReachIntermediateConditionalDefaultRate_label_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsPeriodtoReachIntermediateConditionalDefaultRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Projected Loss Assumptions, Period to Reach Intermediate Conditional Default Rate</link:label>
    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsPeriodtoReachIntermediateConditionalDefaultRate_documentation_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsPeriodtoReachIntermediateConditionalDefaultRate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the period over which the conditional default rate on a pool of insured obligations is assumed to improve from the current level to an intermediate conditional default rate.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_GuarantorObligationsProjectedLossAssumptionsPeriodtoReachIntermediateConditionalDefaultRate" xlink:href="ago-20240630.xsd#ago_GuarantorObligationsProjectedLossAssumptionsPeriodtoReachIntermediateConditionalDefaultRate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_GuarantorObligationsProjectedLossAssumptionsPeriodtoReachIntermediateConditionalDefaultRate" xlink:to="lab_ago_GuarantorObligationsProjectedLossAssumptionsPeriodtoReachIntermediateConditionalDefaultRate" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_VariableInterestEntityOtherConsolidatedCarryingAmountAssets_7c86dc5b-919b-4569-b480-3120dd4f3444_terseLabel_en-US" xlink:label="lab_ago_VariableInterestEntityOtherConsolidatedCarryingAmountAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other consolidated VIE assets</link:label>
    <link:label id="lab_ago_VariableInterestEntityOtherConsolidatedCarryingAmountAssets_label_en-US" xlink:label="lab_ago_VariableInterestEntityOtherConsolidatedCarryingAmountAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable Interest Entity, Other Consolidated, Carrying Amount, Assets</link:label>
    <link:label id="lab_ago_VariableInterestEntityOtherConsolidatedCarryingAmountAssets_documentation_en-US" xlink:label="lab_ago_VariableInterestEntityOtherConsolidatedCarryingAmountAssets" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Variable Interest Entity, Other Consolidated, Carrying Amount, Assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_VariableInterestEntityOtherConsolidatedCarryingAmountAssets" xlink:href="ago-20240630.xsd#ago_VariableInterestEntityOtherConsolidatedCarryingAmountAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_VariableInterestEntityOtherConsolidatedCarryingAmountAssets" xlink:to="lab_ago_VariableInterestEntityOtherConsolidatedCarryingAmountAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ProceedsFromSaleOfShortTermInvestments_f422362b-2b4d-47cf-983e-0e39c7255fca_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfShortTermInvestments" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sales</link:label>
    <link:label id="lab_us-gaap_ProceedsFromSaleOfShortTermInvestments_label_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfShortTermInvestments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Sale of Short-Term Investments</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfShortTermInvestments" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromSaleOfShortTermInvestments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromSaleOfShortTermInvestments" xlink:to="lab_us-gaap_ProceedsFromSaleOfShortTermInvestments" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityAddressCountry_a6764fb4-3d10-49af-8df1-bb1bae21aedd_terseLabel_en-US" xlink:label="lab_dei_EntityAddressCountry" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Address, Country</link:label>
    <link:label id="lab_dei_EntityAddressCountry_label_en-US" xlink:label="lab_dei_EntityAddressCountry" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Address, Country</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCountry" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityAddressCountry"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityAddressCountry" xlink:to="lab_dei_EntityAddressCountry" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_EquitySecuritiesandWarrantsMember_b76933e3-a9d5-4526-96a3-19cda3b7d84d_terseLabel_en-US" xlink:label="lab_ago_EquitySecuritiesandWarrantsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity Securities and Warrants</link:label>
    <link:label id="lab_ago_EquitySecuritiesandWarrantsMember_label_en-US" xlink:label="lab_ago_EquitySecuritiesandWarrantsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity Securities and Warrants [Member]</link:label>
    <link:label id="lab_ago_EquitySecuritiesandWarrantsMember_documentation_en-US" xlink:label="lab_ago_EquitySecuritiesandWarrantsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Equity Securities and Warrants [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_EquitySecuritiesandWarrantsMember" xlink:href="ago-20240630.xsd#ago_EquitySecuritiesandWarrantsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_EquitySecuritiesandWarrantsMember" xlink:to="lab_ago_EquitySecuritiesandWarrantsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancingReceivableRealEstateOwnedMember_930e31f5-e04a-4b6a-bac5-14fb6827b5a9_terseLabel_en-US" xlink:label="lab_ago_FinancingReceivableRealEstateOwnedMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Real Estate Owned</link:label>
    <link:label id="lab_ago_FinancingReceivableRealEstateOwnedMember_label_en-US" xlink:label="lab_ago_FinancingReceivableRealEstateOwnedMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Receivable, Real Estate Owned [Member]</link:label>
    <link:label id="lab_ago_FinancingReceivableRealEstateOwnedMember_documentation_en-US" xlink:label="lab_ago_FinancingReceivableRealEstateOwnedMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financing Receivable, Real Estate Owned [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancingReceivableRealEstateOwnedMember" xlink:href="ago-20240630.xsd#ago_FinancingReceivableRealEstateOwnedMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancingReceivableRealEstateOwnedMember" xlink:to="lab_ago_FinancingReceivableRealEstateOwnedMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_f18e6fe5-e095-46b4-b819-891400a1e457_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other comprehensive (loss) income</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueMeasurementsRecurringMember_6069abc5-14cb-4b2f-9180-51e337cd91d1_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueMeasurementsRecurringMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Recurring</link:label>
    <link:label id="lab_us-gaap_FairValueMeasurementsRecurringMember_label_en-US" xlink:label="lab_us-gaap_FairValueMeasurementsRecurringMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Recurring [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueMeasurementsRecurringMember" xlink:to="lab_us-gaap_FairValueMeasurementsRecurringMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_PositiveOutcomeOfLitigationMember_690bb949-c9c9-4332-9548-3724dad1725f_terseLabel_en-US" xlink:label="lab_us-gaap_PositiveOutcomeOfLitigationMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Positive Outcome of Litigation</link:label>
    <link:label id="lab_us-gaap_PositiveOutcomeOfLitigationMember_label_en-US" xlink:label="lab_us-gaap_PositiveOutcomeOfLitigationMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Positive Outcome of Litigation [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PositiveOutcomeOfLitigationMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PositiveOutcomeOfLitigationMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PositiveOutcomeOfLitigationMember" xlink:to="lab_us-gaap_PositiveOutcomeOfLitigationMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_BaseScenarioMember_f5a66b14-c42c-444f-a734-a767799214e1_terseLabel_en-US" xlink:label="lab_ago_BaseScenarioMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Base Scenario</link:label>
    <link:label id="lab_ago_BaseScenarioMember_label_en-US" xlink:label="lab_ago_BaseScenarioMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Base Scenario [Member]</link:label>
    <link:label id="lab_ago_BaseScenarioMember_documentation_en-US" xlink:label="lab_ago_BaseScenarioMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the current or base level on the basis of which the sensitivity analysis is done.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_BaseScenarioMember" xlink:href="ago-20240630.xsd#ago_BaseScenarioMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_BaseScenarioMember" xlink:to="lab_ago_BaseScenarioMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger_a5a57052-c0da-4a2b-ba2f-643ed0d330ad_terseLabel_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value</link:label>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger_label_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger" xlink:to="lab_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_LongTermDebt_2f99ee44-57a7-4f9a-850f-c60a8b04f0b3_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term debt</link:label>
    <link:label id="lab_us-gaap_LongTermDebt_c8b67763-4154-4bae-9ce0-5af92a1039ed_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebt" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Long-term debt</link:label>
    <link:label id="lab_us-gaap_LongTermDebt_label_en-US" xlink:label="lab_us-gaap_LongTermDebt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-Term Debt</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermDebt"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebt" xlink:to="lab_us-gaap_LongTermDebt" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_PnsnAdjsPrrSvcCstMember_terseLabel_en-US" xlink:label="lab_ecd_PnsnAdjsPrrSvcCstMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pension Adjustments Prior Service Cost</link:label>
    <link:label id="lab_ecd_PnsnAdjsPrrSvcCstMember_label_en-US" xlink:label="lab_ecd_PnsnAdjsPrrSvcCstMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pension Adjustments Prior Service Cost [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_PnsnAdjsPrrSvcCstMember" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_PnsnAdjsPrrSvcCstMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_PnsnAdjsPrrSvcCstMember" xlink:to="lab_ecd_PnsnAdjsPrrSvcCstMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationRollForward_80f5c617-9cb7-4847-9b36-81e82be905f1_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationRollForward" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]</link:label>
    <link:label id="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationRollForward_label_en-US" xlink:label="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationRollForward" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationRollForward" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationRollForward"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationRollForward" xlink:to="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationRollForward" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationRemainingWeightedAverageContractPeriodAbstract_c1f68704-b564-403b-8950-a9915508a314_terseLabel_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationRemainingWeightedAverageContractPeriodAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Remaining weighted average contract period</link:label>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationRemainingWeightedAverageContractPeriodAbstract_label_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationRemainingWeightedAverageContractPeriodAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations with Credit Deterioration, Remaining Weighted Average Contract Period [Abstract]</link:label>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationRemainingWeightedAverageContractPeriodAbstract_documentation_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationRemainingWeightedAverageContractPeriodAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">-- None. No documentation exists for this element. --</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationRemainingWeightedAverageContractPeriodAbstract" xlink:href="ago-20240630.xsd#ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationRemainingWeightedAverageContractPeriodAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationRemainingWeightedAverageContractPeriodAbstract" xlink:to="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationRemainingWeightedAverageContractPeriodAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueByBalanceSheetGroupingTable_80fdc1c7-1c70-47fe-9bd3-adc67b8fa27a_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueByBalanceSheetGroupingTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value, by Balance Sheet Grouping [Table]</link:label>
    <link:label id="lab_us-gaap_FairValueByBalanceSheetGroupingTable_label_en-US" xlink:label="lab_us-gaap_FairValueByBalanceSheetGroupingTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, by Balance Sheet Grouping [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueByBalanceSheetGroupingTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable" xlink:to="lab_us-gaap_FairValueByBalanceSheetGroupingTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_GovernmentAgencyObligationsAsPercentageOfTotalMortgageBackedSecurities_d6c4ee69-7b17-4dd5-9106-37ef2b0de9f0_terseLabel_en-US" xlink:label="lab_ago_GovernmentAgencyObligationsAsPercentageOfTotalMortgageBackedSecurities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Government agency obligations as a percentage of total mortgage backed securities</link:label>
    <link:label id="lab_ago_GovernmentAgencyObligationsAsPercentageOfTotalMortgageBackedSecurities_label_en-US" xlink:label="lab_ago_GovernmentAgencyObligationsAsPercentageOfTotalMortgageBackedSecurities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Government Agency Obligations as a Percentage of Total Mortgage Backed Securities</link:label>
    <link:label id="lab_ago_GovernmentAgencyObligationsAsPercentageOfTotalMortgageBackedSecurities_documentation_en-US" xlink:label="lab_ago_GovernmentAgencyObligationsAsPercentageOfTotalMortgageBackedSecurities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents government agency obligations as a percentage of the aggregate amortized cost of mortgage backed securities.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_GovernmentAgencyObligationsAsPercentageOfTotalMortgageBackedSecurities" xlink:href="ago-20240630.xsd#ago_GovernmentAgencyObligationsAsPercentageOfTotalMortgageBackedSecurities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_GovernmentAgencyObligationsAsPercentageOfTotalMortgageBackedSecurities" xlink:to="lab_ago_GovernmentAgencyObligationsAsPercentageOfTotalMortgageBackedSecurities" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryTable_8071c91d-d819-47c4-82fd-4606eb5aa66f_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investment Income [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryTable_label_en-US" xlink:label="lab_us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investment Income [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryTable" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryTable" xlink:to="lab_us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_PnsnBnftsAdjFnTextBlock_terseLabel_en-US" xlink:label="lab_ecd_PnsnBnftsAdjFnTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pension Benefits Adjustments, Footnote</link:label>
    <link:label id="lab_ecd_PnsnBnftsAdjFnTextBlock_label_en-US" xlink:label="lab_ecd_PnsnBnftsAdjFnTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pension Benefits Adjustments, Footnote [Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_PnsnBnftsAdjFnTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_PnsnBnftsAdjFnTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_PnsnBnftsAdjFnTextBlock" xlink:to="lab_ecd_PnsnBnftsAdjFnTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_TotalShareholderRtnVsPeerGroupTextBlock_terseLabel_en-US" xlink:label="lab_ecd_TotalShareholderRtnVsPeerGroupTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total Shareholder Return Vs Peer Group</link:label>
    <link:label id="lab_ecd_TotalShareholderRtnVsPeerGroupTextBlock_label_en-US" xlink:label="lab_ecd_TotalShareholderRtnVsPeerGroupTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Total Shareholder Return Vs Peer Group [Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_TotalShareholderRtnVsPeerGroupTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_TotalShareholderRtnVsPeerGroupTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_TotalShareholderRtnVsPeerGroupTextBlock" xlink:to="lab_ecd_TotalShareholderRtnVsPeerGroupTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_TreasuryStockAcquiredAverageCostPerShare_6bb63561-53b5-4aa2-beeb-6dca824253ff_terseLabel_en-US" xlink:label="lab_us-gaap_TreasuryStockAcquiredAverageCostPerShare" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Average price paid per share (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_TreasuryStockAcquiredAverageCostPerShare_label_en-US" xlink:label="lab_us-gaap_TreasuryStockAcquiredAverageCostPerShare" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Shares Acquired, Average Cost Per Share</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockAcquiredAverageCostPerShare" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TreasuryStockAcquiredAverageCostPerShare"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TreasuryStockAcquiredAverageCostPerShare" xlink:to="lab_us-gaap_TreasuryStockAcquiredAverageCostPerShare" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_InvestmentIncomeInvestmentExpense_c93a6341-5919-46dc-8ffc-ef220a4703dc_negatedLabel_en-US" xlink:label="lab_us-gaap_InvestmentIncomeInvestmentExpense" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Investment expenses</link:label>
    <link:label id="lab_us-gaap_InvestmentIncomeInvestmentExpense_label_en-US" xlink:label="lab_us-gaap_InvestmentIncomeInvestmentExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investment Income, Investment Expense</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeInvestmentExpense" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InvestmentIncomeInvestmentExpense"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentIncomeInvestmentExpense" xlink:to="lab_us-gaap_InvestmentIncomeInvestmentExpense" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_GuarantorObligationsDefaultPeriodFromDelinquent_f4b369c7-8af9-4d77-b96c-cdcd68be160d_terseLabel_en-US" xlink:label="lab_ago_GuarantorObligationsDefaultPeriodFromDelinquent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Default from delinquentor rate, term</link:label>
    <link:label id="lab_ago_GuarantorObligationsDefaultPeriodFromDelinquent_label_en-US" xlink:label="lab_ago_GuarantorObligationsDefaultPeriodFromDelinquent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Default Period From Delinquent</link:label>
    <link:label id="lab_ago_GuarantorObligationsDefaultPeriodFromDelinquent_documentation_en-US" xlink:label="lab_ago_GuarantorObligationsDefaultPeriodFromDelinquent" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the initial period over which defaults projected to occur on a pool of insured obligations represent defaults that can be attributed to obligations that are currently delinquent or in foreclosure.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_GuarantorObligationsDefaultPeriodFromDelinquent" xlink:href="ago-20240630.xsd#ago_GuarantorObligationsDefaultPeriodFromDelinquent"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_GuarantorObligationsDefaultPeriodFromDelinquent" xlink:to="lab_ago_GuarantorObligationsDefaultPeriodFromDelinquent" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerGreaterThan10PercentBookValueAggregateLosses_ef7b8602-f8aa-41e1-a102-d35dd8681efc_terseLabel_en-US" xlink:label="lab_ago_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerGreaterThan10PercentBookValueAggregateLosses" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total unrealized losses for securities having losses greater than 10% of book value for 12 months or more</link:label>
    <link:label id="lab_ago_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerGreaterThan10PercentBookValueAggregateLosses_label_en-US" xlink:label="lab_ago_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerGreaterThan10PercentBookValueAggregateLosses" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Continuous Unrealized Loss Position Twelve Months or Longer Greater than 10 Percent Book Value, Aggregate Losses</link:label>
    <link:label id="lab_ago_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerGreaterThan10PercentBookValueAggregateLosses_documentation_en-US" xlink:label="lab_ago_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerGreaterThan10PercentBookValueAggregateLosses" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This item represents the excess of amortized cost basis over fair value of securities that have been in a loss position for twelve months or longer for those securities which are categorized neither as held-to-maturity nor trading securities and which have unrealized losses greater than 10% of book value.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerGreaterThan10PercentBookValueAggregateLosses" xlink:href="ago-20240630.xsd#ago_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerGreaterThan10PercentBookValueAggregateLosses"/>
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    <link:label id="lab_ago_OtherInvestmentsInternallyManagedMember_7703c38e-c91a-4bb5-9f98-bd5a30de093a_terseLabel_en-US" xlink:label="lab_ago_OtherInvestmentsInternallyManagedMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other</link:label>
    <link:label id="lab_ago_OtherInvestmentsInternallyManagedMember_label_en-US" xlink:label="lab_ago_OtherInvestmentsInternallyManagedMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Investments, Internally Managed [Member]</link:label>
    <link:label id="lab_ago_OtherInvestmentsInternallyManagedMember_documentation_en-US" xlink:label="lab_ago_OtherInvestmentsInternallyManagedMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Investments, Internally Managed [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_OtherInvestmentsInternallyManagedMember" xlink:href="ago-20240630.xsd#ago_OtherInvestmentsInternallyManagedMember"/>
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    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLocationDomain_66375355-c658-499b-acb1-1f5b004fa599_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLocationDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income Location [Domain]</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLocationDomain_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLocationDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income Location [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLocationDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLocationDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLocationDomain" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLocationDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_VariableInterestEntityOtherConsolidatedCarryingAmountLiabilities_d1bce32f-3817-444b-8baa-395574c6c3b1_terseLabel_en-US" xlink:label="lab_ago_VariableInterestEntityOtherConsolidatedCarryingAmountLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other consolidated VIE liabilities</link:label>
    <link:label id="lab_ago_VariableInterestEntityOtherConsolidatedCarryingAmountLiabilities_label_en-US" xlink:label="lab_ago_VariableInterestEntityOtherConsolidatedCarryingAmountLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable Interest Entity, Other Consolidated, Carrying Amount, Liabilities</link:label>
    <link:label id="lab_ago_VariableInterestEntityOtherConsolidatedCarryingAmountLiabilities_documentation_en-US" xlink:label="lab_ago_VariableInterestEntityOtherConsolidatedCarryingAmountLiabilities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Variable Interest Entity, Other Consolidated, Carrying Amount, Liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_VariableInterestEntityOtherConsolidatedCarryingAmountLiabilities" xlink:href="ago-20240630.xsd#ago_VariableInterestEntityOtherConsolidatedCarryingAmountLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_VariableInterestEntityOtherConsolidatedCarryingAmountLiabilities" xlink:to="lab_ago_VariableInterestEntityOtherConsolidatedCarryingAmountLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ParentMember_2bcca7f2-84ef-4884-9bd6-95c29c6961a2_terseLabel_en-US" xlink:label="lab_us-gaap_ParentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_us-gaap_ParentMember_label_en-US" xlink:label="lab_us-gaap_ParentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Parent [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ParentMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ParentMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ParentMember" xlink:to="lab_us-gaap_ParentMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedMoreThanFourAndWithin9YearsFromBalanceSheetDate_a88d3169-3faf-4808-8432-2aec79e2a42a_terseLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedMoreThanFourAndWithin9YearsFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2029-2033</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedMoreThanFourAndWithin9YearsFromBalanceSheetDate_label_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedMoreThanFourAndWithin9YearsFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts Future Expected Net Loss to be Expensed More than Four and Within 9 Years from Balance Sheet Date</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedMoreThanFourAndWithin9YearsFromBalanceSheetDate_documentation_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedMoreThanFourAndWithin9YearsFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts Future Expected Net Loss to be Expensed More than Four and Within 9 Years from Balance Sheet Date</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedMoreThanFourAndWithin9YearsFromBalanceSheetDate" xlink:href="ago-20240630.xsd#ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedMoreThanFourAndWithin9YearsFromBalanceSheetDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedMoreThanFourAndWithin9YearsFromBalanceSheetDate" xlink:to="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedMoreThanFourAndWithin9YearsFromBalanceSheetDate" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_OtherAssetsandOtherInvestedAssetsMember_71e6239c-a4d8-4bb5-be04-e34c27d6c205_terseLabel_en-US" xlink:label="lab_ago_OtherAssetsandOtherInvestedAssetsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other</link:label>
    <link:label id="lab_ago_OtherAssetsandOtherInvestedAssetsMember_label_en-US" xlink:label="lab_ago_OtherAssetsandOtherInvestedAssetsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Assets and Other Invested Assets [Member]</link:label>
    <link:label id="lab_ago_OtherAssetsandOtherInvestedAssetsMember_documentation_en-US" xlink:label="lab_ago_OtherAssetsandOtherInvestedAssetsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Assets and Other Invested Assets [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_OtherAssetsandOtherInvestedAssetsMember" xlink:href="ago-20240630.xsd#ago_OtherAssetsandOtherInvestedAssetsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_OtherAssetsandOtherInvestedAssetsMember" xlink:to="lab_ago_OtherAssetsandOtherInvestedAssetsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_NonUsMember_de929dcd-0d5c-458f-b536-adc4df4a8d0b_terseLabel_en-US" xlink:label="lab_us-gaap_NonUsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-U.S. public finance</link:label>
    <link:label id="lab_us-gaap_NonUsMember_label_en-US" xlink:label="lab_us-gaap_NonUsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-US [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonUsMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NonUsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NonUsMember" xlink:to="lab_us-gaap_NonUsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_RevenuesAbstract_27482921-8395-4c2d-ad40-adeb56d2d17a_terseLabel_en-US" xlink:label="lab_us-gaap_RevenuesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revenues</link:label>
    <link:label id="lab_us-gaap_RevenuesAbstract_label_en-US" xlink:label="lab_us-gaap_RevenuesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenues [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuesAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenuesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenuesAbstract" xlink:to="lab_us-gaap_RevenuesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ScheduleofNetExpectedLossestobePaidTableTextBlock_6c5e0460-597d-4c92-9ec9-72aaa316a2a2_terseLabel_en-US" xlink:label="lab_ago_ScheduleofNetExpectedLossestobePaidTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net Expected Loss to be Paid By Accounting Model</link:label>
    <link:label id="lab_ago_ScheduleofNetExpectedLossestobePaidTableTextBlock_label_en-US" xlink:label="lab_ago_ScheduleofNetExpectedLossestobePaidTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Net Expected Losses to be Paid [Table Text Block]</link:label>
    <link:label id="lab_ago_ScheduleofNetExpectedLossestobePaidTableTextBlock_documentation_en-US" xlink:label="lab_ago_ScheduleofNetExpectedLossestobePaidTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule of Net Expected Losses to be Paid [Table Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ScheduleofNetExpectedLossestobePaidTableTextBlock" xlink:href="ago-20240630.xsd#ago_ScheduleofNetExpectedLossestobePaidTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ScheduleofNetExpectedLossestobePaidTableTextBlock" xlink:to="lab_ago_ScheduleofNetExpectedLossestobePaidTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_CurrentFiscalYearEndDate_395d7ea0-626d-47a6-b3ce-ae4730c0f78d_terseLabel_en-US" xlink:label="lab_dei_CurrentFiscalYearEndDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current Fiscal Year End Date</link:label>
    <link:label id="lab_dei_CurrentFiscalYearEndDate_label_en-US" xlink:label="lab_dei_CurrentFiscalYearEndDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current Fiscal Year End Date</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CurrentFiscalYearEndDate" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_CurrentFiscalYearEndDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_CurrentFiscalYearEndDate" xlink:to="lab_dei_CurrentFiscalYearEndDate" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue_5daac355-1f1a-4441-8dca-b1d2372a53cf_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Due within one year</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ShortTermInvestments_f5f2ed03-5684-4ccc-8189-3242121f889e_terseLabel_en-US" xlink:label="lab_us-gaap_ShortTermInvestments" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Short-term investments, at fair value</link:label>
    <link:label id="lab_us-gaap_ShortTermInvestments_label_en-US" xlink:label="lab_us-gaap_ShortTermInvestments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Short-Term Investments</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermInvestments" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShortTermInvestments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShortTermInvestments" xlink:to="lab_us-gaap_ShortTermInvestments" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_PeoName_terseLabel_en-US" xlink:label="lab_ecd_PeoName" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">PEO Name</link:label>
    <link:label id="lab_ecd_PeoName_label_en-US" xlink:label="lab_ecd_PeoName" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">PEO Name</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_PeoName" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_PeoName"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_PeoName" xlink:to="lab_ecd_PeoName" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_StockIssuedDuringPeriodValueSharebasedCompensationandOther_4d1f3c25-8a5f-4ae1-afd1-53341a95ac61_terseLabel_en-US" xlink:label="lab_ago_StockIssuedDuringPeriodValueSharebasedCompensationandOther" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share-based compensation</link:label>
    <link:label id="lab_ago_StockIssuedDuringPeriodValueSharebasedCompensationandOther_label_en-US" xlink:label="lab_ago_StockIssuedDuringPeriodValueSharebasedCompensationandOther" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock Issued During Period, Value, Share-based Compensation and Other</link:label>
    <link:label id="lab_ago_StockIssuedDuringPeriodValueSharebasedCompensationandOther_documentation_en-US" xlink:label="lab_ago_StockIssuedDuringPeriodValueSharebasedCompensationandOther" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Includes share-based compensation expense, net share activity under the company's long-term incentive plan, employee stock purchase plan, excess tax benefits for share-based compensation and share cancellations in satisfaction of withholding tax requirements.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_StockIssuedDuringPeriodValueSharebasedCompensationandOther" xlink:href="ago-20240630.xsd#ago_StockIssuedDuringPeriodValueSharebasedCompensationandOther"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_StockIssuedDuringPeriodValueSharebasedCompensationandOther" xlink:to="lab_ago_StockIssuedDuringPeriodValueSharebasedCompensationandOther" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ReinsuranceRecoverablesPeriodafterEndofReportingPeriodforSettlementofCededPaidLosses_6be50abc-0181-4a60-ab0f-d8fd3bce3442_terseLabel_en-US" xlink:label="lab_ago_ReinsuranceRecoverablesPeriodafterEndofReportingPeriodforSettlementofCededPaidLosses" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Period after the end of the reporting period within which the ceded paid losses are typically settled (in days)</link:label>
    <link:label id="lab_ago_ReinsuranceRecoverablesPeriodafterEndofReportingPeriodforSettlementofCededPaidLosses_label_en-US" xlink:label="lab_ago_ReinsuranceRecoverablesPeriodafterEndofReportingPeriodforSettlementofCededPaidLosses" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reinsurance Recoverables, Period after End of Reporting Period for Settlement of Ceded Paid Losses</link:label>
    <link:label id="lab_ago_ReinsuranceRecoverablesPeriodafterEndofReportingPeriodforSettlementofCededPaidLosses_documentation_en-US" xlink:label="lab_ago_ReinsuranceRecoverablesPeriodafterEndofReportingPeriodforSettlementofCededPaidLosses" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the period after the end of the reporting period within which the ceded paid losses are settled.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ReinsuranceRecoverablesPeriodafterEndofReportingPeriodforSettlementofCededPaidLosses" xlink:href="ago-20240630.xsd#ago_ReinsuranceRecoverablesPeriodafterEndofReportingPeriodforSettlementofCededPaidLosses"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ReinsuranceRecoverablesPeriodafterEndofReportingPeriodforSettlementofCededPaidLosses" xlink:to="lab_ago_ReinsuranceRecoverablesPeriodafterEndofReportingPeriodforSettlementofCededPaidLosses" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">All Award Types</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Award Type [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_AssetsofConsolidatedInvestmentVehicles_0648d930-204f-4e2c-9f00-72e28f0471f5_terseLabel_en-US" xlink:label="lab_ago_AssetsofConsolidatedInvestmentVehicles" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Assets of consolidated investment vehicles (includes $357 and $331, at fair value)</link:label>
    <link:label id="lab_ago_AssetsofConsolidatedInvestmentVehicles_63467894-5ab6-4754-bebf-393f3eba965c_verboseLabel_en-US" xlink:label="lab_ago_AssetsofConsolidatedInvestmentVehicles" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Assets of CIVs</link:label>
    <link:label id="lab_ago_AssetsofConsolidatedInvestmentVehicles_label_en-US" xlink:label="lab_ago_AssetsofConsolidatedInvestmentVehicles" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets of Consolidated Investment Vehicles</link:label>
    <link:label id="lab_ago_AssetsofConsolidatedInvestmentVehicles_documentation_en-US" xlink:label="lab_ago_AssetsofConsolidatedInvestmentVehicles" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Assets of Consolidated Investment Vehicles</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_AssetsofConsolidatedInvestmentVehicles" xlink:href="ago-20240630.xsd#ago_AssetsofConsolidatedInvestmentVehicles"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_AssetsofConsolidatedInvestmentVehicles" xlink:to="lab_ago_AssetsofConsolidatedInvestmentVehicles" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ScheduleofInsuredFinancialObligationsTable_1ebf4919-446a-4c3b-9d8b-e0840bd369cf_terseLabel_en-US" xlink:label="lab_ago_ScheduleofInsuredFinancialObligationsTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations [Table]</link:label>
    <link:label id="lab_ago_ScheduleofInsuredFinancialObligationsTable_label_en-US" xlink:label="lab_ago_ScheduleofInsuredFinancialObligationsTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations [Table]</link:label>
    <link:label id="lab_ago_ScheduleofInsuredFinancialObligationsTable_documentation_en-US" xlink:label="lab_ago_ScheduleofInsuredFinancialObligationsTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ScheduleofInsuredFinancialObligationsTable" xlink:href="ago-20240630.xsd#ago_ScheduleofInsuredFinancialObligationsTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ScheduleofInsuredFinancialObligationsTable" xlink:to="lab_ago_ScheduleofInsuredFinancialObligationsTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock_terseLabel_en-US" xlink:label="lab_ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Compensation Actually Paid vs. Company Selected Measure</link:label>
    <link:label id="lab_ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock_label_en-US" xlink:label="lab_ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Compensation Actually Paid vs. Company Selected Measure [Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock" xlink:to="lab_ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_NonPeoNeoMember_terseLabel_en-US" xlink:label="lab_ecd_NonPeoNeoMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-PEO NEO</link:label>
    <link:label id="lab_ecd_NonPeoNeoMember_label_en-US" xlink:label="lab_ecd_NonPeoNeoMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-PEO NEO [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_NonPeoNeoMember" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_NonPeoNeoMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_NonPeoNeoMember" xlink:to="lab_ecd_NonPeoNeoMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_InvestmentsFairValueDisclosure_c8e6b866-d423-4ac8-9174-fe2308f3c6e3_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentsFairValueDisclosure" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investments, fair value disclosure</link:label>
    <link:label id="lab_us-gaap_InvestmentsFairValueDisclosure_label_en-US" xlink:label="lab_us-gaap_InvestmentsFairValueDisclosure" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investments, Fair Value Disclosure</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsFairValueDisclosure" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InvestmentsFairValueDisclosure"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentsFairValueDisclosure" xlink:to="lab_us-gaap_InvestmentsFairValueDisclosure" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountYearThree_a2bf2f30-2ff7-4003-9b14-116f3b2de51e_terseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountYearThree" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2027</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountYearThree_label_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountYearThree" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Principal Amount, Year Three</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountYearThree_documentation_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountYearThree" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Principal Amount, Year Three</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountYearThree" xlink:href="ago-20240630.xsd#ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountYearThree"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountYearThree" xlink:to="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingPrincipalAmountYearThree" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_TradingSecuritiesDebt_966d4e75-f939-4b9b-b133-cec13bced842_verboseLabel_en-US" xlink:label="lab_us-gaap_TradingSecuritiesDebt" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Fixed-maturity securities, trading, at fair value</link:label>
    <link:label id="lab_us-gaap_TradingSecuritiesDebt_c03cee04-238b-4e75-8a66-2de9221381f5_terseLabel_en-US" xlink:label="lab_us-gaap_TradingSecuritiesDebt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fixed-maturity securities, trading</link:label>
    <link:label id="lab_us-gaap_TradingSecuritiesDebt_label_en-US" xlink:label="lab_us-gaap_TradingSecuritiesDebt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Trading</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradingSecuritiesDebt" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TradingSecuritiesDebt"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TradingSecuritiesDebt" xlink:to="lab_us-gaap_TradingSecuritiesDebt" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityNetDiscount_bf8fd4e5-27d5-410b-a61e-c9aecd1a5a53_negatedLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityNetDiscount" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Gross</link:label>
    <link:label id="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityNetDiscount_label_en-US" xlink:label="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityNetDiscount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations with Credit Deterioration, Reductions of Gross Claim Liability, Net Discount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityNetDiscount" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityNetDiscount"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityNetDiscount" xlink:to="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityNetDiscount" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_RepaymentsOfCollateralizedLoanObligations_f5817db1-5ac6-4c33-bdd7-90e48160038a_negatedTerseLabel_en-US" xlink:label="lab_ago_RepaymentsOfCollateralizedLoanObligations" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Repayment of collateralized loan obligations</link:label>
    <link:label id="lab_ago_RepaymentsOfCollateralizedLoanObligations_label_en-US" xlink:label="lab_ago_RepaymentsOfCollateralizedLoanObligations" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Repayments Of Collateralized Loan Obligations</link:label>
    <link:label id="lab_ago_RepaymentsOfCollateralizedLoanObligations_documentation_en-US" xlink:label="lab_ago_RepaymentsOfCollateralizedLoanObligations" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Repayments Of Collateralized Loan Obligations</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_RepaymentsOfCollateralizedLoanObligations" xlink:href="ago-20240630.xsd#ago_RepaymentsOfCollateralizedLoanObligations"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_RepaymentsOfCollateralizedLoanObligations" xlink:to="lab_ago_RepaymentsOfCollateralizedLoanObligations" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_DebtServiceAbstract_9d4d5f4e-23d3-4b6c-896b-b7d63088a657_terseLabel_en-US" xlink:label="lab_ago_DebtServiceAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Service</link:label>
    <link:label id="lab_ago_DebtServiceAbstract_label_en-US" xlink:label="lab_ago_DebtServiceAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Service [Abstract]</link:label>
    <link:label id="lab_ago_DebtServiceAbstract_documentation_en-US" xlink:label="lab_ago_DebtServiceAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Service</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_DebtServiceAbstract" xlink:href="ago-20240630.xsd#ago_DebtServiceAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_DebtServiceAbstract" xlink:to="lab_ago_DebtServiceAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_IncomeTaxReconciliationOtherAdjustments_350ffdca-c3dd-431b-a080-9f5ef48be727_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationOtherAdjustments" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other</link:label>
    <link:label id="lab_us-gaap_IncomeTaxReconciliationOtherAdjustments_label_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationOtherAdjustments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Effective Income Tax Rate Reconciliation, Other Adjustments, Amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationOtherAdjustments" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxReconciliationOtherAdjustments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxReconciliationOtherAdjustments" xlink:to="lab_us-gaap_IncomeTaxReconciliationOtherAdjustments" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_37acd3a2-9e06-4aa7-8953-5cf341d4e3b4_terseLabel_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Recent Accounting Standards Not Yet Adopted</link:label>
    <link:label id="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_label_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">New Accounting Pronouncements, Policy [Policy Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:to="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ScheduleOfEstimatedExpectedLossesAssumptionsSecondLienRmbsTableTextBlock_2869926b-7a79-418d-9571-2270967cfc32_terseLabel_en-US" xlink:label="lab_ago_ScheduleOfEstimatedExpectedLossesAssumptionsSecondLienRmbsTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Key Assumptions in Base Case Expected Loss Estimates Second Lien RMBS</link:label>
    <link:label id="lab_ago_ScheduleOfEstimatedExpectedLossesAssumptionsSecondLienRmbsTableTextBlock_label_en-US" xlink:label="lab_ago_ScheduleOfEstimatedExpectedLossesAssumptionsSecondLienRmbsTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Estimated Expected Losses Assumptions Second Lien RMBS [Table Text Block]</link:label>
    <link:label id="lab_ago_ScheduleOfEstimatedExpectedLossesAssumptionsSecondLienRmbsTableTextBlock_documentation_en-US" xlink:label="lab_ago_ScheduleOfEstimatedExpectedLossesAssumptionsSecondLienRmbsTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tabular disclosure of the key assumptions used in the calculation of estimated expected losses for second lien RMBS.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ScheduleOfEstimatedExpectedLossesAssumptionsSecondLienRmbsTableTextBlock" xlink:href="ago-20240630.xsd#ago_ScheduleOfEstimatedExpectedLossesAssumptionsSecondLienRmbsTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ScheduleOfEstimatedExpectedLossesAssumptionsSecondLienRmbsTableTextBlock" xlink:to="lab_ago_ScheduleOfEstimatedExpectedLossesAssumptionsSecondLienRmbsTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_StatementClassOfStockAxis_4df3b1e8-abfc-4d44-a17e-c05da9d93480_terseLabel_en-US" xlink:label="lab_us-gaap_StatementClassOfStockAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Class of Stock [Axis]</link:label>
    <link:label id="lab_us-gaap_StatementClassOfStockAxis_label_en-US" xlink:label="lab_us-gaap_StatementClassOfStockAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Class of Stock [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementClassOfStockAxis" xlink:to="lab_us-gaap_StatementClassOfStockAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FairValueInputsTerm_ea427f7f-821d-442c-b510-34f628a133df_terseLabel_en-US" xlink:label="lab_ago_FairValueInputsTerm" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Term (years)</link:label>
    <link:label id="lab_ago_FairValueInputsTerm_label_en-US" xlink:label="lab_ago_FairValueInputsTerm" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Inputs Term</link:label>
    <link:label id="lab_ago_FairValueInputsTerm_documentation_en-US" xlink:label="lab_ago_FairValueInputsTerm" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the term used as an input to measure fair value.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FairValueInputsTerm" xlink:href="ago-20240630.xsd#ago_FairValueInputsTerm"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FairValueInputsTerm" xlink:to="lab_ago_FairValueInputsTerm" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InsuredFinancialObligationsNumberofContracts_badd2106-9847-4ab3-b324-287f0a437b63_totalLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsNumberofContracts" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Number of risks</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsNumberofContracts_label_en-US" xlink:label="lab_ago_InsuredFinancialObligationsNumberofContracts" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Number of Contracts</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsNumberofContracts_documentation_en-US" xlink:label="lab_ago_InsuredFinancialObligationsNumberofContracts" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the number of unique credits in the insured portfolio.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuredFinancialObligationsNumberofContracts" xlink:href="ago-20240630.xsd#ago_InsuredFinancialObligationsNumberofContracts"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InsuredFinancialObligationsNumberofContracts" xlink:to="lab_ago_InsuredFinancialObligationsNumberofContracts" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_MeasureName_terseLabel_en-US" xlink:label="lab_ecd_MeasureName" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Name</link:label>
    <link:label id="lab_ecd_MeasureName_label_en-US" xlink:label="lab_ecd_MeasureName" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Measure Name</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_MeasureName" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_MeasureName"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_MeasureName" xlink:to="lab_ecd_MeasureName" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityInteractiveDataCurrent_7f9e4224-79ad-43db-a9a0-7f060638ef5e_terseLabel_en-US" xlink:label="lab_dei_EntityInteractiveDataCurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Interactive Data Current</link:label>
    <link:label id="lab_dei_EntityInteractiveDataCurrent_label_en-US" xlink:label="lab_dei_EntityInteractiveDataCurrent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Interactive Data Current</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityInteractiveDataCurrent" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityInteractiveDataCurrent"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityInteractiveDataCurrent" xlink:to="lab_dei_EntityInteractiveDataCurrent" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FairValueInputsYield_54949856-b1db-40d3-8ba9-b31164f932c6_terseLabel_en-US" xlink:label="lab_ago_FairValueInputsYield" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Yield (as a percent)</link:label>
    <link:label id="lab_ago_FairValueInputsYield_label_en-US" xlink:label="lab_ago_FairValueInputsYield" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Inputs Yield</link:label>
    <link:label id="lab_ago_FairValueInputsYield_documentation_en-US" xlink:label="lab_ago_FairValueInputsYield" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the yield used as an input to measure fair value.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FairValueInputsYield" xlink:href="ago-20240630.xsd#ago_FairValueInputsYield"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FairValueInputsYield" xlink:to="lab_ago_FairValueInputsYield" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsPoliciesPaidinInstallmentsTableTextBlock_2d255af6-3ae8-4dda-901d-b038c45a0593_verboseLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsPoliciesPaidinInstallmentsTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Selected Information for Policies Paid in Installments</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsPoliciesPaidinInstallmentsTableTextBlock_label_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsPoliciesPaidinInstallmentsTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Policies Paid in Installments [Table Text Block]</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsPoliciesPaidinInstallmentsTableTextBlock_documentation_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsPoliciesPaidinInstallmentsTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tabular disclosure of the selected information for financial guarantee insurance policies paid in installments, including premiums receivable, gross deferred premium revenue, weighted-average risk-free rate used to discount premiums and weighted-average period of premiums receivable.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuaranteeInsuranceContractsPoliciesPaidinInstallmentsTableTextBlock" xlink:href="ago-20240630.xsd#ago_FinancialGuaranteeInsuranceContractsPoliciesPaidinInstallmentsTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuaranteeInsuranceContractsPoliciesPaidinInstallmentsTableTextBlock" xlink:to="lab_ago_FinancialGuaranteeInsuranceContractsPoliciesPaidinInstallmentsTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt_34bdd4d4-cf46-49b8-a6c3-3bf365f8c5ec_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sales</link:label>
    <link:label id="lab_us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt_label_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Sale of Debt Securities, Available-for-Sale</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt" xlink:to="lab_us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsPeriodtoReachFinalLossSeverityRate_02908f19-e42d-4e50-bcd4-96043c605610_terseLabel_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsPeriodtoReachFinalLossSeverityRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Projected loss assumptions, period to reach final loss severity rate</link:label>
    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsPeriodtoReachFinalLossSeverityRate_label_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsPeriodtoReachFinalLossSeverityRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Projected Loss Assumptions, Period to Reach Final Loss Severity Rate</link:label>
    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsPeriodtoReachFinalLossSeverityRate_documentation_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsPeriodtoReachFinalLossSeverityRate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the period over which the conditional prepayment rate assumed for a pool of insured obligations trends from the initial to the final rate.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_GuarantorObligationsProjectedLossAssumptionsPeriodtoReachFinalLossSeverityRate" xlink:href="ago-20240630.xsd#ago_GuarantorObligationsProjectedLossAssumptionsPeriodtoReachFinalLossSeverityRate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_GuarantorObligationsProjectedLossAssumptionsPeriodtoReachFinalLossSeverityRate" xlink:to="lab_ago_GuarantorObligationsProjectedLossAssumptionsPeriodtoReachFinalLossSeverityRate" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_PolicyholderBenefitsAndClaimsIncurredNet_8cb2a2c5-5c3f-4759-9bfb-82abe81a5458_verboseLabel_en-US" xlink:label="lab_us-gaap_PolicyholderBenefitsAndClaimsIncurredNet" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Loss and loss adjustment expenses (benefit)</link:label>
    <link:label id="lab_us-gaap_PolicyholderBenefitsAndClaimsIncurredNet_label_en-US" xlink:label="lab_us-gaap_PolicyholderBenefitsAndClaimsIncurredNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Policyholder Benefits and Claims Incurred, Net</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PolicyholderBenefitsAndClaimsIncurredNet" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PolicyholderBenefitsAndClaimsIncurredNet"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PolicyholderBenefitsAndClaimsIncurredNet" xlink:to="lab_us-gaap_PolicyholderBenefitsAndClaimsIncurredNet" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_PendingLitigationMember_4744ccbb-912d-43ea-a0e3-f51c7b6a03fc_terseLabel_en-US" xlink:label="lab_us-gaap_PendingLitigationMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pending Litigation</link:label>
    <link:label id="lab_us-gaap_PendingLitigationMember_label_en-US" xlink:label="lab_us-gaap_PendingLitigationMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pending Litigation [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PendingLitigationMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PendingLitigationMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PendingLitigationMember" xlink:to="lab_us-gaap_PendingLitigationMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedOneYearFromBalanceSheetDate_576e9eca-947a-450a-aa48-df1abd4d5dd9_totalLabel_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedOneYearFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Subtotal 2024</link:label>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedOneYearFromBalanceSheetDate_label_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedOneYearFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contract, Premium Revenue to be Recognized, Year One</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedOneYearFromBalanceSheetDate" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedOneYearFromBalanceSheetDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedOneYearFromBalanceSheetDate" xlink:to="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedOneYearFromBalanceSheetDate" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ScheduleofExpectedLossestobePaidLineItems_f83c7bd4-d304-4495-83d0-be3ea8686b87_terseLabel_en-US" xlink:label="lab_ago_ScheduleofExpectedLossestobePaidLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Expected Losses to be Paid [Line Items]</link:label>
    <link:label id="lab_ago_ScheduleofExpectedLossestobePaidLineItems_label_en-US" xlink:label="lab_ago_ScheduleofExpectedLossestobePaidLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Expected Losses to be Paid [Line Items]</link:label>
    <link:label id="lab_ago_ScheduleofExpectedLossestobePaidLineItems_documentation_en-US" xlink:label="lab_ago_ScheduleofExpectedLossestobePaidLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">[Line Items] for Schedule of Expected Losses to be Paid [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ScheduleofExpectedLossestobePaidLineItems" xlink:href="ago-20240630.xsd#ago_ScheduleofExpectedLossestobePaidLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ScheduleofExpectedLossestobePaidLineItems" xlink:to="lab_ago_ScheduleofExpectedLossestobePaidLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_CreditDerivativesByContractTypeAxis_5a5ea134-d284-4fe3-adf0-0e592a18bbee_terseLabel_en-US" xlink:label="lab_us-gaap_CreditDerivativesByContractTypeAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Credit Derivatives Contract Type [Axis]</link:label>
    <link:label id="lab_us-gaap_CreditDerivativesByContractTypeAxis_label_en-US" xlink:label="lab_us-gaap_CreditDerivativesByContractTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Credit Derivatives Contract Type [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditDerivativesByContractTypeAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CreditDerivativesByContractTypeAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CreditDerivativesByContractTypeAxis" xlink:to="lab_us-gaap_CreditDerivativesByContractTypeAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_AssumptionForFairValueOnSecuritizationDateOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesPrepaymentSpeed_4d5ee82d-3df0-4ad2-bf9f-af52f04285cf_terseLabel_en-US" xlink:label="lab_us-gaap_AssumptionForFairValueOnSecuritizationDateOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesPrepaymentSpeed" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Conditional prepayment rate</link:label>
    <link:label id="lab_us-gaap_AssumptionForFairValueOnSecuritizationDateOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesPrepaymentSpeed_label_en-US" xlink:label="lab_us-gaap_AssumptionForFairValueOnSecuritizationDateOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesPrepaymentSpeed" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Assumption, Date of Securitization or Asset-Backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities, Prepayment Speed</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssumptionForFairValueOnSecuritizationDateOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesPrepaymentSpeed" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssumptionForFairValueOnSecuritizationDateOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesPrepaymentSpeed"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssumptionForFairValueOnSecuritizationDateOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesPrepaymentSpeed" xlink:to="lab_us-gaap_AssumptionForFairValueOnSecuritizationDateOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesPrepaymentSpeed" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FairValueInputsBankProfit_901b9518-1ad7-4ccf-ad4e-6ed78198b043_terseLabel_en-US" xlink:label="lab_ago_FairValueInputsBankProfit" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Bank profit (as a percent)</link:label>
    <link:label id="lab_ago_FairValueInputsBankProfit_label_en-US" xlink:label="lab_ago_FairValueInputsBankProfit" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Inputs Bank Profit</link:label>
    <link:label id="lab_ago_FairValueInputsBankProfit_documentation_en-US" xlink:label="lab_ago_FairValueInputsBankProfit" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the bank profit (in basis points), used as an input to measure fair value.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FairValueInputsBankProfit" xlink:href="ago-20240630.xsd#ago_FairValueInputsBankProfit"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FairValueInputsBankProfit" xlink:to="lab_ago_FairValueInputsBankProfit" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ScheduleOfCreditDerivativesTable_0f934e87-e2b7-471a-be74-567440c0fc0e_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfCreditDerivativesTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Credit Derivatives [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfCreditDerivativesTable_label_en-US" xlink:label="lab_us-gaap_ScheduleOfCreditDerivativesTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Credit Derivative [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfCreditDerivativesTable" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfCreditDerivativesTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfCreditDerivativesTable" xlink:to="lab_us-gaap_ScheduleOfCreditDerivativesTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuarantyContractsAccountedForAsCreditDerivativesAbstract_cfbbcdd9-eaf2-439b-a04a-0bac63366761_terseLabel_en-US" xlink:label="lab_ago_FinancialGuarantyContractsAccountedForAsCreditDerivativesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net Par Outstanding on Credit Derivatives</link:label>
    <link:label id="lab_ago_FinancialGuarantyContractsAccountedForAsCreditDerivativesAbstract_label_en-US" xlink:label="lab_ago_FinancialGuarantyContractsAccountedForAsCreditDerivativesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guaranty Contracts Accounted for as Credit Derivatives Abstract</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuarantyContractsAccountedForAsCreditDerivativesAbstract" xlink:href="ago-20240630.xsd#ago_FinancialGuarantyContractsAccountedForAsCreditDerivativesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuarantyContractsAccountedForAsCreditDerivativesAbstract" xlink:to="lab_ago_FinancialGuarantyContractsAccountedForAsCreditDerivativesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_StockRedeemedOrCalledDuringPeriodValue_1a3b35a0-3c84-4e98-af32-f8b197f519e4_terseLabel_en-US" xlink:label="lab_us-gaap_StockRedeemedOrCalledDuringPeriodValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock redeemed or during period</link:label>
    <link:label id="lab_us-gaap_StockRedeemedOrCalledDuringPeriodValue_label_en-US" xlink:label="lab_us-gaap_StockRedeemedOrCalledDuringPeriodValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock Redeemed or Called During Period, Value</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRedeemedOrCalledDuringPeriodValue" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockRedeemedOrCalledDuringPeriodValue"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockRedeemedOrCalledDuringPeriodValue" xlink:to="lab_us-gaap_StockRedeemedOrCalledDuringPeriodValue" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_DebtSecuritiesRealizedGainLoss_cb262a91-892b-4634-93fa-2e67489f10ff_totalLabel_en-US" xlink:label="lab_us-gaap_DebtSecuritiesRealizedGainLoss" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net realized investment gains (losses)</link:label>
    <link:label id="lab_us-gaap_DebtSecuritiesRealizedGainLoss_label_en-US" xlink:label="lab_us-gaap_DebtSecuritiesRealizedGainLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Realized Gain (Loss)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesRealizedGainLoss" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesRealizedGainLoss"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtSecuritiesRealizedGainLoss" xlink:to="lab_us-gaap_DebtSecuritiesRealizedGainLoss" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings_323cb6ad-7c6e-4ea2-8e78-b19fe818be04_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net income (loss)</link:label>
    <link:label id="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings_label_en-US" xlink:label="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings"/>
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    <link:label id="lab_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesChangesInTimingAndAssumptions_63a07af0-d911-459a-8e73-cbde3a0d9d35_terseLabel_en-US" xlink:label="lab_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesChangesInTimingAndAssumptions" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Changes in timing and assumptions</link:label>
    <link:label id="lab_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesChangesInTimingAndAssumptions_label_en-US" xlink:label="lab_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesChangesInTimingAndAssumptions" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Net Expected Loss Development After Recoveries for Representations and Warranties, Changes In Timing And Assumptions</link:label>
    <link:label id="lab_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesChangesInTimingAndAssumptions_documentation_en-US" xlink:label="lab_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesChangesInTimingAndAssumptions" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Net Expected Loss Development After Recoveries for Representations and Warranties, Changes In Timing And Assumptions</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesChangesInTimingAndAssumptions" xlink:href="ago-20240630.xsd#ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesChangesInTimingAndAssumptions"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesChangesInTimingAndAssumptions" xlink:to="lab_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesChangesInTimingAndAssumptions" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_CorporateNonSegmentMember_21ad33f9-8b60-49ca-8c85-7a148e89ac2a_terseLabel_en-US" xlink:label="lab_us-gaap_CorporateNonSegmentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Corporate division</link:label>
    <link:label id="lab_us-gaap_CorporateNonSegmentMember_label_en-US" xlink:label="lab_us-gaap_CorporateNonSegmentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateNonSegmentMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CorporateNonSegmentMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CorporateNonSegmentMember" xlink:to="lab_us-gaap_CorporateNonSegmentMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ScheduleOfInvestmentsLineItems_cbbe1413-e0b3-4a57-8496-d2b6ce6ddeff_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfInvestmentsLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Investments [Line Items]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfInvestmentsLineItems_label_en-US" xlink:label="lab_us-gaap_ScheduleOfInvestmentsLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Investments [Line Items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInvestmentsLineItems" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfInvestmentsLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems" xlink:to="lab_us-gaap_ScheduleOfInvestmentsLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_PuertoRicoHighwaysAndTransportationAuthorityMember_e28e4a26-3113-4f47-829b-17cdee32c007_terseLabel_en-US" xlink:label="lab_ago_PuertoRicoHighwaysAndTransportationAuthorityMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">PRHTA</link:label>
    <link:label id="lab_ago_PuertoRicoHighwaysAndTransportationAuthorityMember_label_en-US" xlink:label="lab_ago_PuertoRicoHighwaysAndTransportationAuthorityMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Puerto Rico Highways and Transportation Authority [Member]</link:label>
    <link:label id="lab_ago_PuertoRicoHighwaysAndTransportationAuthorityMember_documentation_en-US" xlink:label="lab_ago_PuertoRicoHighwaysAndTransportationAuthorityMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Puerto Rico Highways and Transportation Authority</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_PuertoRicoHighwaysAndTransportationAuthorityMember" xlink:href="ago-20240630.xsd#ago_PuertoRicoHighwaysAndTransportationAuthorityMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_PuertoRicoHighwaysAndTransportationAuthorityMember" xlink:to="lab_ago_PuertoRicoHighwaysAndTransportationAuthorityMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_SupplementalCashFlowInformationAbstract_181289b5-cb2a-4763-8b33-4dc4f43afd93_terseLabel_en-US" xlink:label="lab_us-gaap_SupplementalCashFlowInformationAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Supplemental cash flow information</link:label>
    <link:label id="lab_us-gaap_SupplementalCashFlowInformationAbstract_label_en-US" xlink:label="lab_us-gaap_SupplementalCashFlowInformationAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Supplemental Cash Flow Information [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SupplementalCashFlowInformationAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SupplementalCashFlowInformationAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SupplementalCashFlowInformationAbstract" xlink:to="lab_us-gaap_SupplementalCashFlowInformationAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ShortTermInvestmentsAbstract_693a9323-5342-45c5-a50f-7204387b2d90_terseLabel_en-US" xlink:label="lab_us-gaap_ShortTermInvestmentsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Short-term investments with original maturities of over three months:</link:label>
    <link:label id="lab_us-gaap_ShortTermInvestmentsAbstract_label_en-US" xlink:label="lab_us-gaap_ShortTermInvestmentsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Short-Term Investments [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermInvestmentsAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShortTermInvestmentsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShortTermInvestmentsAbstract" xlink:to="lab_us-gaap_ShortTermInvestmentsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReservesSalvageAbstract_945e311d-bb11-4e31-a906-c225cfd250f2_terseLabel_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReservesSalvageAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reserves (salvage)</link:label>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReservesSalvageAbstract_label_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReservesSalvageAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations with Credit Deterioration, Reserves Salvage [Abstract]</link:label>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReservesSalvageAbstract_documentation_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReservesSalvageAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">-- None. No documentation exists for this element. --</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReservesSalvageAbstract" xlink:href="ago-20240630.xsd#ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReservesSalvageAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReservesSalvageAbstract" xlink:to="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReservesSalvageAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsYearTwo_bfd19a4d-b2b9-4d1d-b11a-e893d9124224_terseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsYearTwo" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2026</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsYearTwo_label_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsYearTwo" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Contractual Payments, Year Two</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsYearTwo_documentation_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsYearTwo" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Contractual Payments, Year Two</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsYearTwo" xlink:href="ago-20240630.xsd#ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsYearTwo"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsYearTwo" xlink:to="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsYearTwo" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_f8216042-2792-4316-b81e-1436b1752316_totalLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Distributed and undistributed income (loss) available to common shareholders of AGL and subsidiaries, diluted</link:label>
    <link:label id="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_label_en-US" xlink:label="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Income (Loss) Available to Common Stockholders, Diluted</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted" xlink:to="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_8be0c4e8-d085-454b-a863-6d813c04e403_terseLabel_en-US" xlink:label="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reclassification out of Accumulated Other Comprehensive Income [Domain]</link:label>
    <link:label id="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_label_en-US" xlink:label="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reclassification out of Accumulated Other Comprehensive Income [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain"/>
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    <link:label id="lab_us-gaap_ConcentrationRiskBenchmarkDomain_b874f3cd-a53c-4555-8ff6-e55f4ae952c4_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskBenchmarkDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Concentration Risk Benchmark [Domain]</link:label>
    <link:label id="lab_us-gaap_ConcentrationRiskBenchmarkDomain_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskBenchmarkDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Concentration Risk Benchmark [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain" xlink:to="lab_us-gaap_ConcentrationRiskBenchmarkDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_PuertoRicoElectricPowerAuthorityMember_59dcad58-23bf-4329-9a07-bd21a1f71762_terseLabel_en-US" xlink:label="lab_ago_PuertoRicoElectricPowerAuthorityMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Puerto Rico Electric Power Authority</link:label>
    <link:label id="lab_ago_PuertoRicoElectricPowerAuthorityMember_label_en-US" xlink:label="lab_ago_PuertoRicoElectricPowerAuthorityMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Puerto Rico Electric Power Authority [Member]</link:label>
    <link:label id="lab_ago_PuertoRicoElectricPowerAuthorityMember_documentation_en-US" xlink:label="lab_ago_PuertoRicoElectricPowerAuthorityMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Puerto Rico Electric Power Authority [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_PuertoRicoElectricPowerAuthorityMember" xlink:href="ago-20240630.xsd#ago_PuertoRicoElectricPowerAuthorityMember"/>
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    <link:label id="lab_country_BM_9931ce46-7367-4d71-b4b6-79caa4637298_terseLabel_en-US" xlink:label="lab_country_BM" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Bermuda</link:label>
    <link:label id="lab_country_BM_label_en-US" xlink:label="lab_country_BM" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">BERMUDA</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_country_BM" xlink:href="https://xbrl.sec.gov/country/2024/country-2024.xsd#country_BM"/>
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    <link:label id="lab_ago_LoansInsuredOrGuaranteeForGovernmentAuthoritiesAxis_079c5a8d-854f-4183-88f0-199fc3570b1c_terseLabel_en-US" xlink:label="lab_ago_LoansInsuredOrGuaranteeForGovernmentAuthoritiesAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loans Insured Or Guarantee For Government Authorities [Axis]</link:label>
    <link:label id="lab_ago_LoansInsuredOrGuaranteeForGovernmentAuthoritiesAxis_label_en-US" xlink:label="lab_ago_LoansInsuredOrGuaranteeForGovernmentAuthoritiesAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans Insured Or Guarantee For Government Authorities [Axis]</link:label>
    <link:label id="lab_ago_LoansInsuredOrGuaranteeForGovernmentAuthoritiesAxis_documentation_en-US" xlink:label="lab_ago_LoansInsuredOrGuaranteeForGovernmentAuthoritiesAxis" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Loans Insured Or Guarantee For Government Authorities [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_LoansInsuredOrGuaranteeForGovernmentAuthoritiesAxis" xlink:href="ago-20240630.xsd#ago_LoansInsuredOrGuaranteeForGovernmentAuthoritiesAxis"/>
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    <link:label id="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperations_e77b409d-fa68-41e5-825e-9f0cb6c3129b_terseLabel_en-US" xlink:label="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Effective tax rate</link:label>
    <link:label id="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperations_label_en-US" xlink:label="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Effective Income Tax Rate Reconciliation, Percent</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations"/>
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    <link:label id="lab_us-gaap_OperatingIncomeLoss_0adb56c2-8a19-4ac3-b737-2266b3773cf0_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingIncomeLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Segment adjusted operating income (loss)</link:label>
    <link:label id="lab_us-gaap_OperatingIncomeLoss_label_en-US" xlink:label="lab_us-gaap_OperatingIncomeLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Income (Loss)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingIncomeLoss" xlink:to="lab_us-gaap_OperatingIncomeLoss" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_CommitmenttoProvideGuaranteesMember_bf971023-b677-4f23-bdfe-ade713126813_terseLabel_en-US" xlink:label="lab_ago_CommitmenttoProvideGuaranteesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Commitment to Provide Guarantees</link:label>
    <link:label id="lab_ago_CommitmenttoProvideGuaranteesMember_label_en-US" xlink:label="lab_ago_CommitmenttoProvideGuaranteesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commitment to Provide Guarantees [Member]</link:label>
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    <link:label id="lab_us-gaap_FairValueOptionAggregateDifferencesLoansAndLongTermReceivables_967deca2-7654-411a-93c9-c6d3228400d3_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueOptionAggregateDifferencesLoansAndLongTermReceivables" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">FG VIEs&#8217; assets</link:label>
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    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThanFiveAndWithin10YearsFromBalanceSheetDate_d446ab54-d377-46f6-94c0-8facd0fa9e6a_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThanFiveAndWithin10YearsFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2029-2033</link:label>
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    <link:label id="lab_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_43d18c16-6330-4802-a0e4-74a37d30e9ba_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Long-Lived Assets Held-for-sale [Table]</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ecd_IndividualAxis" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_IndividualAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_IndividualAxis" xlink:to="lab_ecd_IndividualAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsLossSeverityInitialRate_ca915f26-9bad-4c86-adb9-8497a9624bd0_terseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsLossSeverityInitialRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss severity on future defaults</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsLossSeverityInitialRate_label_en-US" xlink:label="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsLossSeverityInitialRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Projected Loss Assumptions, Loss Severity, Initial Rate</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsLossSeverityInitialRate_documentation_en-US" xlink:label="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsLossSeverityInitialRate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Projected Loss Assumptions, Loss Severity, Initial Rate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuredFinancialObligationsProjectedLossAssumptionsLossSeverityInitialRate" xlink:href="ago-20240630.xsd#ago_InsuredFinancialObligationsProjectedLossAssumptionsLossSeverityInitialRate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InsuredFinancialObligationsProjectedLossAssumptionsLossSeverityInitialRate" xlink:to="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsLossSeverityInitialRate" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember_479f6c5b-8200-4de5-92aa-96a83121ba70_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accumulated Other Comprehensive Income (Loss)</link:label>
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember_b084949f-62d5-4a50-a552-d57cb6dc6ae6_verboseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Total AOCI</link:label>
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember_label_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">AOCI Attributable to Parent [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:to="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_74da922f-aae9-465a-bc78-cdd141cc01b4_verboseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Liabilities held for sale</link:label>
    <link:label id="lab_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_label_en-US" xlink:label="lab_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disposal Group, Including Discontinued Operation, Liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation" xlink:to="lab_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation" xlink:type="arc" order="1"/>
    <link:label id="lab_srt_ProductOrServiceAxis_d5ffab53-c7d6-4ade-ac94-5ebd0ce4cb35_terseLabel_en-US" xlink:label="lab_srt_ProductOrServiceAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Insurance Product Line [Axis]</link:label>
    <link:label id="lab_srt_ProductOrServiceAxis_label_en-US" xlink:label="lab_srt_ProductOrServiceAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Product and Service [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductOrServiceAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ProductOrServiceAxis" xlink:to="lab_srt_ProductOrServiceAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_StatementLineItems_77887918-8568-4f50-bdff-94dd187966e2_terseLabel_en-US" xlink:label="lab_us-gaap_StatementLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Statement [Line Items]</link:label>
    <link:label id="lab_us-gaap_StatementLineItems_label_en-US" xlink:label="lab_us-gaap_StatementLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement [Line Items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementLineItems" xlink:to="lab_us-gaap_StatementLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_MeasurementInputTypeDomain_cae54ad3-0ec7-4974-be2c-bc1d4de5e094_terseLabel_en-US" xlink:label="lab_us-gaap_MeasurementInputTypeDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Measurement Input Type [Domain]</link:label>
    <link:label id="lab_us-gaap_MeasurementInputTypeDomain_label_en-US" xlink:label="lab_us-gaap_MeasurementInputTypeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Measurement Input Type [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MeasurementInputTypeDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MeasurementInputTypeDomain" xlink:to="lab_us-gaap_MeasurementInputTypeDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_SoundPointCapitalManagementLPMember_e8069a27-7604-450f-b375-8919afbf8546_terseLabel_en-US" xlink:label="lab_ago_SoundPointCapitalManagementLPMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sound Point Capital Management, LP</link:label>
    <link:label id="lab_ago_SoundPointCapitalManagementLPMember_41a3f82e-da41-4a69-ad74-0aeb7ecb161f_verboseLabel_en-US" xlink:label="lab_ago_SoundPointCapitalManagementLPMember" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Sound Point</link:label>
    <link:label id="lab_ago_SoundPointCapitalManagementLPMember_label_en-US" xlink:label="lab_ago_SoundPointCapitalManagementLPMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Sound Point Capital Management, LP [Member]</link:label>
    <link:label id="lab_ago_SoundPointCapitalManagementLPMember_documentation_en-US" xlink:label="lab_ago_SoundPointCapitalManagementLPMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Sound Point Capital Management, LP</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_SoundPointCapitalManagementLPMember" xlink:href="ago-20240630.xsd#ago_SoundPointCapitalManagementLPMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_SoundPointCapitalManagementLPMember" xlink:to="lab_ago_SoundPointCapitalManagementLPMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_InvestmentIncomeNetAbstract_65aab5c8-3ac2-4042-8f95-46027198cc3b_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentIncomeNetAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net Investment Income</link:label>
    <link:label id="lab_us-gaap_InvestmentIncomeNetAbstract_label_en-US" xlink:label="lab_us-gaap_InvestmentIncomeNetAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investment Income, Net [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeNetAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InvestmentIncomeNetAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentIncomeNetAbstract" xlink:to="lab_us-gaap_InvestmentIncomeNetAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock_terseLabel_en-US" xlink:label="lab_ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Compensation Actually Paid vs. Total Shareholder Return</link:label>
    <link:label id="lab_ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock_label_en-US" xlink:label="lab_ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Compensation Actually Paid vs. Total Shareholder Return [Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock" xlink:to="lab_ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationStatementOfFinancialPositionUnearnedPremiumRevenueAbstract_8289ff70-b17f-495d-9fdf-63fe03844510_terseLabel_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationStatementOfFinancialPositionUnearnedPremiumRevenueAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred premium revenue</link:label>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationStatementOfFinancialPositionUnearnedPremiumRevenueAbstract_label_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationStatementOfFinancialPositionUnearnedPremiumRevenueAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations with Credit Deterioration, Statement of Financial Position Unearned Premium Revenue [Abstract]</link:label>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationStatementOfFinancialPositionUnearnedPremiumRevenueAbstract_documentation_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationStatementOfFinancialPositionUnearnedPremiumRevenueAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">-- None. No documentation exists for this element. --</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationStatementOfFinancialPositionUnearnedPremiumRevenueAbstract" xlink:href="ago-20240630.xsd#ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationStatementOfFinancialPositionUnearnedPremiumRevenueAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationStatementOfFinancialPositionUnearnedPremiumRevenueAbstract" xlink:to="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationStatementOfFinancialPositionUnearnedPremiumRevenueAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLocationAxis_f9d0c328-8fa3-4ac1-bdec-e906e0efae73_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLocationAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income Location [Axis]</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLocationAxis_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLocationAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income Location [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLocationAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLocationAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLocationAxis" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLocationAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_PuertoRicoMunicipalFinanceAuthorityMember_b6d634ad-faae-428e-bed7-a11cd99144ae_terseLabel_en-US" xlink:label="lab_ago_PuertoRicoMunicipalFinanceAuthorityMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">MFA</link:label>
    <link:label id="lab_ago_PuertoRicoMunicipalFinanceAuthorityMember_label_en-US" xlink:label="lab_ago_PuertoRicoMunicipalFinanceAuthorityMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Puerto Rico Municipal Finance Authority [Member]</link:label>
    <link:label id="lab_ago_PuertoRicoMunicipalFinanceAuthorityMember_documentation_en-US" xlink:label="lab_ago_PuertoRicoMunicipalFinanceAuthorityMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Puerto Rico Municipal Finance Authority [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_PuertoRicoMunicipalFinanceAuthorityMember" xlink:href="ago-20240630.xsd#ago_PuertoRicoMunicipalFinanceAuthorityMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_PuertoRicoMunicipalFinanceAuthorityMember" xlink:to="lab_ago_PuertoRicoMunicipalFinanceAuthorityMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_8a30fc23-c9bb-48b1-b653-b99c4cd57f6c_negatedPeriodStartLabel_en-US" xlink:label="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" xlink:role="http://www.xbrl.org/2009/role/negatedPeriodStartLabel" xlink:type="resource" xml:lang="en-US">Fair value at start of period</link:label>
    <link:label id="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_ddc3e33d-8f92-4375-ab15-6e2950cd23ea_negatedPeriodEndLabel_en-US" xlink:label="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" xlink:role="http://www.xbrl.org/2009/role/negatedPeriodEndLabel" xlink:type="resource" xml:lang="en-US">Fair value at end of period</link:label>
    <link:label id="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_label_en-US" xlink:label="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" xlink:to="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableActivityTableTextBlock_7e7242e7-9a7d-4dac-aa8a-247ef3c107f1_verboseLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableActivityTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Gross Premium Receivable, Net of Commissions on Assumed Business Roll Forward</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableActivityTableTextBlock_label_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableActivityTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Premium Receivable Activity [Table Text Block]</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableActivityTableTextBlock_documentation_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableActivityTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tabular disclosure of premium receivable activity with respect to financial guarantee insurance contracts.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableActivityTableTextBlock" xlink:href="ago-20240630.xsd#ago_FinancialGuaranteeInsuranceContractsPremiumReceivableActivityTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableActivityTableTextBlock" xlink:to="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivableActivityTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_2212b058-9e00-4a04-b18f-30aa72946b54_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value Assets Measured on Recurring Basis</link:label>
    <link:label id="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_label_en-US" xlink:label="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:to="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ReconciliationOfCashAndRestrictedCashToConsolidateBalanceSheetAbstract_154d9782-10e7-453d-8cb8-d5c563ae159a_terseLabel_en-US" xlink:label="lab_ago_ReconciliationOfCashAndRestrictedCashToConsolidateBalanceSheetAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reconciliation of cash and cash equivalents and restricted cash to the condensed consolidated balance sheets:</link:label>
    <link:label id="lab_ago_ReconciliationOfCashAndRestrictedCashToConsolidateBalanceSheetAbstract_label_en-US" xlink:label="lab_ago_ReconciliationOfCashAndRestrictedCashToConsolidateBalanceSheetAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reconciliation of Cash and Restricted Cash to Consolidate Balance Sheet [Abstract]</link:label>
    <link:label id="lab_ago_ReconciliationOfCashAndRestrictedCashToConsolidateBalanceSheetAbstract_documentation_en-US" xlink:label="lab_ago_ReconciliationOfCashAndRestrictedCashToConsolidateBalanceSheetAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Reconciliation of Cash and Restricted Cash to Consolidate Balance Sheet</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ReconciliationOfCashAndRestrictedCashToConsolidateBalanceSheetAbstract" xlink:href="ago-20240630.xsd#ago_ReconciliationOfCashAndRestrictedCashToConsolidateBalanceSheetAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ReconciliationOfCashAndRestrictedCashToConsolidateBalanceSheetAbstract" xlink:to="lab_ago_ReconciliationOfCashAndRestrictedCashToConsolidateBalanceSheetAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivablePremiumExpectedtobeCollectedBeyondYear20_0fa78823-077a-4b83-a0b6-6f79c159a3a6_terseLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivablePremiumExpectedtobeCollectedBeyondYear20" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">After 2043</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivablePremiumExpectedtobeCollectedBeyondYear20_label_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivablePremiumExpectedtobeCollectedBeyondYear20" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Premium Receivable, Premium Expected to be Collected, Beyond Year 20</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivablePremiumExpectedtobeCollectedBeyondYear20_documentation_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivablePremiumExpectedtobeCollectedBeyondYear20" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">For financial guarantee insurance contracts, the aggregate amount of premium related to the premium receivable which is expected to be collected beyond the twentieth year following the statement of financial position reporting date.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuaranteeInsuranceContractsPremiumReceivablePremiumExpectedtobeCollectedBeyondYear20" xlink:href="ago-20240630.xsd#ago_FinancialGuaranteeInsuranceContractsPremiumReceivablePremiumExpectedtobeCollectedBeyondYear20"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuaranteeInsuranceContractsPremiumReceivablePremiumExpectedtobeCollectedBeyondYear20" xlink:to="lab_ago_FinancialGuaranteeInsuranceContractsPremiumReceivablePremiumExpectedtobeCollectedBeyondYear20" xlink:type="arc" order="1"/>
    <link:label id="lab_srt_MinimumMember_0a46ca29-b191-4452-a1be-851e3fec62ec_terseLabel_en-US" xlink:label="lab_srt_MinimumMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Minimum</link:label>
    <link:label id="lab_srt_MinimumMember_label_en-US" xlink:label="lab_srt_MinimumMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Minimum [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MinimumMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_MinimumMember" xlink:to="lab_srt_MinimumMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_InternalNoninvestmentGradeMember_353aa7ad-5eb8-4cf8-855c-84f85acfe113_terseLabel_en-US" xlink:label="lab_us-gaap_InternalNoninvestmentGradeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">BIG</link:label>
    <link:label id="lab_us-gaap_InternalNoninvestmentGradeMember_label_en-US" xlink:label="lab_us-gaap_InternalNoninvestmentGradeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Internal Noninvestment Grade [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InternalNoninvestmentGradeMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InternalNoninvestmentGradeMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InternalNoninvestmentGradeMember" xlink:to="lab_us-gaap_InternalNoninvestmentGradeMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_TrdArrAdoptionDate_terseLabel_en-US" xlink:label="lab_ecd_TrdArrAdoptionDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Adoption Date</link:label>
    <link:label id="lab_ecd_TrdArrAdoptionDate_label_en-US" xlink:label="lab_ecd_TrdArrAdoptionDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Trading Arrangement Adoption Date</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_TrdArrAdoptionDate" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_TrdArrAdoptionDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_TrdArrAdoptionDate" xlink:to="lab_ecd_TrdArrAdoptionDate" xlink:type="arc" order="1"/>
    <link:label id="lab_country_GB_a1e44796-7203-4861-8951-80f87014be37_verboseLabel_en-US" xlink:label="lab_country_GB" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">United Kingdom</link:label>
    <link:label id="lab_country_GB_4436185f-145e-4b8a-bba1-4b539b476748_terseLabel_en-US" xlink:label="lab_country_GB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">U.K.</link:label>
    <link:label id="lab_country_GB_label_en-US" xlink:label="lab_country_GB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">UNITED KINGDOM</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_country_GB" xlink:href="https://xbrl.sec.gov/country/2024/country-2024.xsd#country_GB"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_country_GB" xlink:to="lab_country_GB" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_DeferredPolicyAcquisitionCostAmortizationExpense_65c1e1e8-98d3-4dcc-8bc0-5668433714dd_verboseLabel_en-US" xlink:label="lab_us-gaap_DeferredPolicyAcquisitionCostAmortizationExpense" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Amortization of deferred acquisition costs</link:label>
    <link:label id="lab_us-gaap_DeferredPolicyAcquisitionCostAmortizationExpense_label_en-US" xlink:label="lab_us-gaap_DeferredPolicyAcquisitionCostAmortizationExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Policy Acquisition Costs, Amortization Expense</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredPolicyAcquisitionCostAmortizationExpense" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredPolicyAcquisitionCostAmortizationExpense"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredPolicyAcquisitionCostAmortizationExpense" xlink:to="lab_us-gaap_DeferredPolicyAcquisitionCostAmortizationExpense" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedDuringThirdQuarterFollowingBalanceSheetDate_de94e8f8-9695-4be8-9511-aadfe42dbbdf_terseLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedDuringThirdQuarterFollowingBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2024 (July 1 - September 30)</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedDuringThirdQuarterFollowingBalanceSheetDate_label_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedDuringThirdQuarterFollowingBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts Future Expected Net Loss to be Expensed During Third Quarter Following Balance Sheet Date</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedDuringThirdQuarterFollowingBalanceSheetDate_documentation_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedDuringThirdQuarterFollowingBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts Future Expected Net Loss to be Expensed During Third Quarter Following Balance Sheet Date</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedDuringThirdQuarterFollowingBalanceSheetDate" xlink:href="ago-20240630.xsd#ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedDuringThirdQuarterFollowingBalanceSheetDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedDuringThirdQuarterFollowingBalanceSheetDate" xlink:to="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedDuringThirdQuarterFollowingBalanceSheetDate" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingPrincipalAbstract_11519836-448a-4690-b768-0fa7a41f88ad_terseLabel_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingPrincipalAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Principal</link:label>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingPrincipalAbstract_label_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingPrincipalAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations with Credit Deterioration, Insured Contractual Payments Outstanding Principal [Abstract]</link:label>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingPrincipalAbstract_documentation_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingPrincipalAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">-- None. No documentation exists for this element. --</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingPrincipalAbstract" xlink:href="ago-20240630.xsd#ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingPrincipalAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingPrincipalAbstract" xlink:to="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingPrincipalAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityNetOfReinsuranceRecoverableDiscountAccretion_b3a53ed3-b215-45e0-9ed6-092cd578f67a_terseLabel_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityNetOfReinsuranceRecoverableDiscountAccretion" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Future accretion</link:label>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityNetOfReinsuranceRecoverableDiscountAccretion_0904f789-67c1-49a5-8662-0938f8c178cc_negatedTerseLabel_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityNetOfReinsuranceRecoverableDiscountAccretion" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityNetOfReinsuranceRecoverableDiscountAccretion_label_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityNetOfReinsuranceRecoverableDiscountAccretion" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations with Credit Deterioration, Reductions of Gross Claim Liability, Net of Reinsurance Recoverable, Discount (Accretion)</link:label>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityNetOfReinsuranceRecoverableDiscountAccretion_documentation_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityNetOfReinsuranceRecoverableDiscountAccretion" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations with Credit Deterioration, Reductions of Gross Claim Liability, Net of Reinsurance Recoverable, Discount (Accretion)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityNetOfReinsuranceRecoverableDiscountAccretion" xlink:href="ago-20240630.xsd#ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityNetOfReinsuranceRecoverableDiscountAccretion"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityNetOfReinsuranceRecoverableDiscountAccretion" xlink:to="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityNetOfReinsuranceRecoverableDiscountAccretion" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_VariableInterestEntityLineItems_19d14a21-f83a-448f-95df-49a65750662a_terseLabel_en-US" xlink:label="lab_us-gaap_VariableInterestEntityLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Variable Interest Entity [Line Items]</link:label>
    <link:label id="lab_us-gaap_VariableInterestEntityLineItems_label_en-US" xlink:label="lab_us-gaap_VariableInterestEntityLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable Interest Entity [Line Items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityLineItems" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VariableInterestEntityLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_VariableInterestEntityLineItems" xlink:to="lab_us-gaap_VariableInterestEntityLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_StatementBusinessSegmentsAxis_325803ab-b6ea-495d-b22f-df2a05ab13c6_terseLabel_en-US" xlink:label="lab_us-gaap_StatementBusinessSegmentsAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Segments [Axis]</link:label>
    <link:label id="lab_us-gaap_StatementBusinessSegmentsAxis_label_en-US" xlink:label="lab_us-gaap_StatementBusinessSegmentsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segments [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:to="lab_us-gaap_StatementBusinessSegmentsAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_ChngInFrValAsOfVstngDtOfPrrYrEqtyAwrdsVstdInCvrdYrMember_terseLabel_en-US" xlink:label="lab_ecd_ChngInFrValAsOfVstngDtOfPrrYrEqtyAwrdsVstdInCvrdYrMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year</link:label>
    <link:label id="lab_ecd_ChngInFrValAsOfVstngDtOfPrrYrEqtyAwrdsVstdInCvrdYrMember_label_en-US" xlink:label="lab_ecd_ChngInFrValAsOfVstngDtOfPrrYrEqtyAwrdsVstdInCvrdYrMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_ChngInFrValAsOfVstngDtOfPrrYrEqtyAwrdsVstdInCvrdYrMember" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_ChngInFrValAsOfVstngDtOfPrrYrEqtyAwrdsVstdInCvrdYrMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_ChngInFrValAsOfVstngDtOfPrrYrEqtyAwrdsVstdInCvrdYrMember" xlink:to="lab_ecd_ChngInFrValAsOfVstngDtOfPrrYrEqtyAwrdsVstdInCvrdYrMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_bcc81cb4-d97f-46f7-a02c-92b2d30a3021_terseLabel_en-US" xlink:label="lab_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Corporate tax rate</link:label>
    <link:label id="lab_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_label_en-US" xlink:label="lab_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" xlink:to="lab_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_AssetsHeldInTrust_458cd2c7-2fec-4071-beed-73f921a9fdd6_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsHeldInTrust" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Assets held-in-trust</link:label>
    <link:label id="lab_us-gaap_AssetsHeldInTrust_label_en-US" xlink:label="lab_us-gaap_AssetsHeldInTrust" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Asset, Held-in-Trust</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsHeldInTrust" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetsHeldInTrust"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsHeldInTrust" xlink:to="lab_us-gaap_AssetsHeldInTrust" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_DerivativeInstrumentRiskAxis_4f374a39-4d81-4ec1-8529-36b78d8a837c_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeInstrumentRiskAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative Instrument [Axis]</link:label>
    <link:label id="lab_us-gaap_DerivativeInstrumentRiskAxis_label_en-US" xlink:label="lab_us-gaap_DerivativeInstrumentRiskAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Instrument [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis" xlink:to="lab_us-gaap_DerivativeInstrumentRiskAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_MeasurementInputPriceToBookMember_902c09e3-fbed-4ba3-9c1e-3955b562822d_terseLabel_en-US" xlink:label="lab_ago_MeasurementInputPriceToBookMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Exit multiple-price to book</link:label>
    <link:label id="lab_ago_MeasurementInputPriceToBookMember_label_en-US" xlink:label="lab_ago_MeasurementInputPriceToBookMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Measurement Input, Price to Book [Member]</link:label>
    <link:label id="lab_ago_MeasurementInputPriceToBookMember_documentation_en-US" xlink:label="lab_ago_MeasurementInputPriceToBookMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Measurement Input, Price to Book</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_MeasurementInputPriceToBookMember" xlink:href="ago-20240630.xsd#ago_MeasurementInputPriceToBookMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_MeasurementInputPriceToBookMember" xlink:to="lab_ago_MeasurementInputPriceToBookMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_NonUnitedStatesMember_e5edbfc1-aa56-487c-a59d-90fe3baafdb0_terseLabel_en-US" xlink:label="lab_ago_NonUnitedStatesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non United States</link:label>
    <link:label id="lab_ago_NonUnitedStatesMember_label_en-US" xlink:label="lab_ago_NonUnitedStatesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non United States [Member]</link:label>
    <link:label id="lab_ago_NonUnitedStatesMember_documentation_en-US" xlink:label="lab_ago_NonUnitedStatesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Non United States [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_NonUnitedStatesMember" xlink:href="ago-20240630.xsd#ago_NonUnitedStatesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_NonUnitedStatesMember" xlink:to="lab_ago_NonUnitedStatesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_HomeEquityMember_c95fcb7b-6f85-4db1-b949-b49426f889a7_terseLabel_en-US" xlink:label="lab_us-gaap_HomeEquityMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Home Equity Line of Credit</link:label>
    <link:label id="lab_us-gaap_HomeEquityMember_label_en-US" xlink:label="lab_us-gaap_HomeEquityMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Home Equity Line of Credit [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HomeEquityMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_HomeEquityMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_HomeEquityMember" xlink:to="lab_us-gaap_HomeEquityMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuarantyContractsAccountedforasCreditDerivativesOutstandingPrincipalAmount_6aa3a73e-daf1-4756-ae45-e17d9b7e162e_netLabel_en-US" xlink:label="lab_ago_FinancialGuarantyContractsAccountedforasCreditDerivativesOutstandingPrincipalAmount" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xml:lang="en-US">Net par outstanding, credit derivative</link:label>
    <link:label id="lab_ago_FinancialGuarantyContractsAccountedforasCreditDerivativesOutstandingPrincipalAmount_1e61b312-568b-4d58-ba9a-2134660188c5_verboseLabel_en-US" xlink:label="lab_ago_FinancialGuarantyContractsAccountedforasCreditDerivativesOutstandingPrincipalAmount" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Net&#160;Par Outstanding</link:label>
    <link:label id="lab_ago_FinancialGuarantyContractsAccountedforasCreditDerivativesOutstandingPrincipalAmount_label_en-US" xlink:label="lab_ago_FinancialGuarantyContractsAccountedforasCreditDerivativesOutstandingPrincipalAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guaranty Contracts Accounted for as Credit Derivatives Outstanding Principal Amount</link:label>
    <link:label id="lab_ago_FinancialGuarantyContractsAccountedforasCreditDerivativesOutstandingPrincipalAmount_documentation_en-US" xlink:label="lab_ago_FinancialGuarantyContractsAccountedforasCreditDerivativesOutstandingPrincipalAmount" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the outstanding principal amounts of the underlying insured obligations that are accounted for as credit derivatives, net of protection purchased.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuarantyContractsAccountedforasCreditDerivativesOutstandingPrincipalAmount" xlink:href="ago-20240630.xsd#ago_FinancialGuarantyContractsAccountedforasCreditDerivativesOutstandingPrincipalAmount"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuarantyContractsAccountedforasCreditDerivativesOutstandingPrincipalAmount" xlink:to="lab_ago_FinancialGuarantyContractsAccountedforasCreditDerivativesOutstandingPrincipalAmount" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_AwardExrcPrice_terseLabel_en-US" xlink:label="lab_ecd_AwardExrcPrice" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Exercise Price</link:label>
    <link:label id="lab_ecd_AwardExrcPrice_label_en-US" xlink:label="lab_ecd_AwardExrcPrice" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Award Exercise Price</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AwardExrcPrice" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_AwardExrcPrice"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AwardExrcPrice" xlink:to="lab_ecd_AwardExrcPrice" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock_68682a19-c403-4d32-94a3-b2ea903e0957_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Deferred Tax Assets and Liabilities</link:label>
    <link:label id="lab_us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock_label_en-US" xlink:label="lab_us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Deferred Tax Assets and Liabilities [Table Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" xlink:to="lab_us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearTenToFourteen_b42858e4-b207-49f8-b2fe-3b4bb7793d30_terseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearTenToFourteen" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2034-2038</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearTenToFourteen_label_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearTenToFourteen" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Contractual Payments, Year Ten to Fourteen</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearTenToFourteen_documentation_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearTenToFourteen" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Contractual Payments, Year Ten to Fourteen</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearTenToFourteen" xlink:href="ago-20240630.xsd#ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearTenToFourteen"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearTenToFourteen" xlink:to="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingContractualPaymentsYearTenToFourteen" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNumberOfRisksAbstract_ce2a6961-f042-4ee1-85a8-25f6e503c534_terseLabel_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNumberOfRisksAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of risks</link:label>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNumberOfRisksAbstract_label_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNumberOfRisksAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations with Credit Deterioration, Number of Risks [Abstract]</link:label>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNumberOfRisksAbstract_documentation_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNumberOfRisksAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">-- None. No documentation exists for this element. --</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNumberOfRisksAbstract" xlink:href="ago-20240630.xsd#ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNumberOfRisksAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNumberOfRisksAbstract" xlink:to="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNumberOfRisksAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_TrdArrDuration_terseLabel_en-US" xlink:label="lab_ecd_TrdArrDuration" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Arrangement Duration</link:label>
    <link:label id="lab_ecd_TrdArrDuration_label_en-US" xlink:label="lab_ecd_TrdArrDuration" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Trading Arrangement Duration</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_TrdArrDuration" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_TrdArrDuration"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_TrdArrDuration" xlink:to="lab_ecd_TrdArrDuration" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithCreditImpairmentTax_c253a39f-52de-406b-aba2-5373b97312f4_terseLabel_en-US" xlink:label="lab_ago_OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithCreditImpairmentTax" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investments with credit impairment, tax</link:label>
    <link:label id="lab_ago_OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithCreditImpairmentTax_label_en-US" xlink:label="lab_ago_OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithCreditImpairmentTax" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), Available-for-sale Securities, With Credit Impairment, Tax</link:label>
    <link:label id="lab_ago_OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithCreditImpairmentTax_documentation_en-US" xlink:label="lab_ago_OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithCreditImpairmentTax" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), Available-for-sale Securities, With Credit Impairment, Tax</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithCreditImpairmentTax" xlink:href="ago-20240630.xsd#ago_OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithCreditImpairmentTax"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithCreditImpairmentTax" xlink:to="lab_ago_OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithCreditImpairmentTax" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ScheduleOfVariableInterestEntitiesTable_be254996-9a7d-420b-b552-dceda3e473ba_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfVariableInterestEntitiesTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Variable Interest Entities [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfVariableInterestEntitiesTable_label_en-US" xlink:label="lab_us-gaap_ScheduleOfVariableInterestEntitiesTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable Interest Entity [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfVariableInterestEntitiesTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable" xlink:to="lab_us-gaap_ScheduleOfVariableInterestEntitiesTable" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months_c13df266-9554-46a5-8827-6983761cc8c1_terseLabel_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value</link:label>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months_label_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months" xlink:to="lab_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_DomesticCountryMember_acc96bb1-6a98-4d74-b79f-bd37167e9066_terseLabel_en-US" xlink:label="lab_us-gaap_DomesticCountryMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Domestic Tax Jurisdiction</link:label>
    <link:label id="lab_us-gaap_DomesticCountryMember_label_en-US" xlink:label="lab_us-gaap_DomesticCountryMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Domestic Tax Jurisdiction [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DomesticCountryMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DomesticCountryMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DomesticCountryMember" xlink:to="lab_us-gaap_DomesticCountryMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_Investments_5e04ef0a-8ddd-4a9f-b423-75fe00aa3661_totalLabel_en-US" xlink:label="lab_us-gaap_Investments" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total investments</link:label>
    <link:label id="lab_us-gaap_Investments_label_en-US" xlink:label="lab_us-gaap_Investments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investments</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Investments" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Investments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Investments" xlink:to="lab_us-gaap_Investments" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_MtrlTermsOfTrdArrTextBlock_terseLabel_en-US" xlink:label="lab_ecd_MtrlTermsOfTrdArrTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Material Terms of Trading Arrangement</link:label>
    <link:label id="lab_ecd_MtrlTermsOfTrdArrTextBlock_label_en-US" xlink:label="lab_ecd_MtrlTermsOfTrdArrTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Material Terms of Trading Arrangement [Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_MtrlTermsOfTrdArrTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_MtrlTermsOfTrdArrTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_MtrlTermsOfTrdArrTextBlock" xlink:to="lab_ecd_MtrlTermsOfTrdArrTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_EquityFundsMember_c8a7a3da-431c-4112-8442-d594f5ea628f_terseLabel_en-US" xlink:label="lab_us-gaap_EquityFundsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Funds</link:label>
    <link:label id="lab_us-gaap_EquityFundsMember_label_en-US" xlink:label="lab_us-gaap_EquityFundsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity Funds [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityFundsMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EquityFundsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EquityFundsMember" xlink:to="lab_us-gaap_EquityFundsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_AllIndividualsMember_terseLabel_en-US" xlink:label="lab_ecd_AllIndividualsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">All Individuals</link:label>
    <link:label id="lab_ecd_AllIndividualsMember_label_en-US" xlink:label="lab_ecd_AllIndividualsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">All Individuals [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AllIndividualsMember" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_AllIndividualsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AllIndividualsMember" xlink:to="lab_ecd_AllIndividualsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_LossContingencyStayImplemented_4043b011-5b64-48f1-b9c3-66e7d376067b_terseLabel_en-US" xlink:label="lab_ago_LossContingencyStayImplemented" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stay implemented</link:label>
    <link:label id="lab_ago_LossContingencyStayImplemented_label_en-US" xlink:label="lab_ago_LossContingencyStayImplemented" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Contingency, Stay Implemented</link:label>
    <link:label id="lab_ago_LossContingencyStayImplemented_documentation_en-US" xlink:label="lab_ago_LossContingencyStayImplemented" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Loss Contingency, Stay Implemented</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_LossContingencyStayImplemented" xlink:href="ago-20240630.xsd#ago_LossContingencyStayImplemented"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_LossContingencyStayImplemented" xlink:to="lab_ago_LossContingencyStayImplemented" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuaranteeVariableInterestEntitiesMember_f10a34f1-117d-44d7-b184-c348b881a971_terseLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeVariableInterestEntitiesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">FG VIEs' assets</link:label>
    <link:label id="lab_ago_FinancialGuaranteeVariableInterestEntitiesMember_label_en-US" xlink:label="lab_ago_FinancialGuaranteeVariableInterestEntitiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Variable Interest Entities [Member]</link:label>
    <link:label id="lab_ago_FinancialGuaranteeVariableInterestEntitiesMember_documentation_en-US" xlink:label="lab_ago_FinancialGuaranteeVariableInterestEntitiesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financial Guarantee Variable Interest Entities [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuaranteeVariableInterestEntitiesMember" xlink:href="ago-20240630.xsd#ago_FinancialGuaranteeVariableInterestEntitiesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuaranteeVariableInterestEntitiesMember" xlink:to="lab_ago_FinancialGuaranteeVariableInterestEntitiesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_country_FR_76d878c5-7f36-4997-9c6c-8718883f048c_terseLabel_en-US" xlink:label="lab_country_FR" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">France</link:label>
    <link:label id="lab_country_FR_label_en-US" xlink:label="lab_country_FR" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">FRANCE</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_country_FR" xlink:href="https://xbrl.sec.gov/country/2024/country-2024.xsd#country_FR"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_country_FR" xlink:to="lab_country_FR" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParentMember_dd2c3e48-6af2-4bfd-ba5e-bd3d71e1865b_terseLabel_en-US" xlink:label="lab_us-gaap_AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">No Credit Impairment</link:label>
    <link:label id="lab_us-gaap_AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParentMember_label_en-US" xlink:label="lab_us-gaap_AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">AOCI, Gain (Loss), Debt Securities, Available-for-Sale, without Allowance for Credit Loss, Parent [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParentMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParentMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParentMember" xlink:to="lab_us-gaap_AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParentMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_CashofConsolidatedInvestmentVehicles_c27b56fd-df82-4159-be15-880016446dd1_terseLabel_en-US" xlink:label="lab_ago_CashofConsolidatedInvestmentVehicles" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents of consolidated investment vehicles (See Note 8)</link:label>
    <link:label id="lab_ago_CashofConsolidatedInvestmentVehicles_label_en-US" xlink:label="lab_ago_CashofConsolidatedInvestmentVehicles" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash of Consolidated Investment Vehicles</link:label>
    <link:label id="lab_ago_CashofConsolidatedInvestmentVehicles_documentation_en-US" xlink:label="lab_ago_CashofConsolidatedInvestmentVehicles" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cash of Consolidated Investment Vehicles</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_CashofConsolidatedInvestmentVehicles" xlink:href="ago-20240630.xsd#ago_CashofConsolidatedInvestmentVehicles"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_CashofConsolidatedInvestmentVehicles" xlink:to="lab_ago_CashofConsolidatedInvestmentVehicles" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ScheduleofExpectedLossestobePaidTable_3bab37ae-551a-49c0-bdda-336e8dee2a11_terseLabel_en-US" xlink:label="lab_ago_ScheduleofExpectedLossestobePaidTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Expected Losses to be Paid [Table]</link:label>
    <link:label id="lab_ago_ScheduleofExpectedLossestobePaidTable_label_en-US" xlink:label="lab_ago_ScheduleofExpectedLossestobePaidTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Expected Losses to be Paid [Table]</link:label>
    <link:label id="lab_ago_ScheduleofExpectedLossestobePaidTable_documentation_en-US" xlink:label="lab_ago_ScheduleofExpectedLossestobePaidTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule of Expected Losses to be Paid [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ScheduleofExpectedLossestobePaidTable" xlink:href="ago-20240630.xsd#ago_ScheduleofExpectedLossestobePaidTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ScheduleofExpectedLossestobePaidTable" xlink:to="lab_ago_ScheduleofExpectedLossestobePaidTable" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_IncomeTaxDisclosureAbstract_67774382-331a-429f-a4b7-2cfe9456453b_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income Tax Disclosure [Abstract]</link:label>
    <link:label id="lab_us-gaap_IncomeTaxDisclosureAbstract_label_en-US" xlink:label="lab_us-gaap_IncomeTaxDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Disclosure [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxDisclosureAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxDisclosureAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract" xlink:to="lab_us-gaap_IncomeTaxDisclosureAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntitiesTable_09ab17b8-39a2-4e17-b4f3-e7c0c5421f4b_terseLabel_en-US" xlink:label="lab_dei_EntitiesTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entities [Table]</link:label>
    <link:label id="lab_dei_EntitiesTable_label_en-US" xlink:label="lab_dei_EntitiesTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entities [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntitiesTable" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntitiesTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntitiesTable" xlink:to="lab_dei_EntitiesTable" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_OtherInvestments_ba21e57f-95fe-4f13-ae7a-0a467dd6438b_terseLabel_en-US" xlink:label="lab_us-gaap_OtherInvestments" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other invested assets (includes $4 and $3, at fair value)</link:label>
    <link:label id="lab_us-gaap_OtherInvestments_ddc30a7c-f7e1-42b5-b126-c79442edd2bb_verboseLabel_en-US" xlink:label="lab_us-gaap_OtherInvestments" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Other invested assets</link:label>
    <link:label id="lab_us-gaap_OtherInvestments_label_en-US" xlink:label="lab_us-gaap_OtherInvestments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Investments</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherInvestments" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherInvestments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherInvestments" xlink:to="lab_us-gaap_OtherInvestments" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityNetDiscountAbstract_2650d853-563d-4fc2-b2cf-b410fcd21eb8_terseLabel_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityNetDiscountAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Discount</link:label>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityNetDiscountAbstract_label_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityNetDiscountAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations with Credit Deterioration Reductions of Gross Claim Liability, Net Discount [Abstract]</link:label>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityNetDiscountAbstract_documentation_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityNetDiscountAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">-- None. No documentation exists for this element. --</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityNetDiscountAbstract" xlink:href="ago-20240630.xsd#ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityNetDiscountAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityNetDiscountAbstract" xlink:to="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityNetDiscountAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_StatementOfStockholdersEquityAbstract_6e236e8f-defe-4a02-8481-9e23d4316475_terseLabel_en-US" xlink:label="lab_us-gaap_StatementOfStockholdersEquityAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Statement of Stockholders' Equity [Abstract]</link:label>
    <link:label id="lab_us-gaap_StatementOfStockholdersEquityAbstract_label_en-US" xlink:label="lab_us-gaap_StatementOfStockholdersEquityAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Stockholders' Equity [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfStockholdersEquityAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementOfStockholdersEquityAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfStockholdersEquityAbstract" xlink:to="lab_us-gaap_StatementOfStockholdersEquityAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FixedMaturityInvestmentsNonInvestmentGradeNotRatedPercent_5489ea15-7f8c-4339-badc-fd7930b649bf_terseLabel_en-US" xlink:label="lab_ago_FixedMaturityInvestmentsNonInvestmentGradeNotRatedPercent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fixed-maturity investments, non-investment grade, percent</link:label>
    <link:label id="lab_ago_FixedMaturityInvestmentsNonInvestmentGradeNotRatedPercent_label_en-US" xlink:label="lab_ago_FixedMaturityInvestmentsNonInvestmentGradeNotRatedPercent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fixed-Maturity Investments, Non-Investment Grade, Not Rated, Percent</link:label>
    <link:label id="lab_ago_FixedMaturityInvestmentsNonInvestmentGradeNotRatedPercent_documentation_en-US" xlink:label="lab_ago_FixedMaturityInvestmentsNonInvestmentGradeNotRatedPercent" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fixed-Maturity Investments, Non-Investment Grade, Not Rated, Percent</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FixedMaturityInvestmentsNonInvestmentGradeNotRatedPercent" xlink:href="ago-20240630.xsd#ago_FixedMaturityInvestmentsNonInvestmentGradeNotRatedPercent"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FixedMaturityInvestmentsNonInvestmentGradeNotRatedPercent" xlink:to="lab_ago_FixedMaturityInvestmentsNonInvestmentGradeNotRatedPercent" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_LossEstimateSensitivityAnalysisChangeInEstimateForIncreasedConditionalDefaultRatePlateauPeriod_cbd728dd-dd91-4cf9-877a-b8c7c777152f_negatedLabel_en-US" xlink:label="lab_ago_LossEstimateSensitivityAnalysisChangeInEstimateForIncreasedConditionalDefaultRatePlateauPeriod" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Change in estimate for increased conditional default rate plateau period</link:label>
    <link:label id="lab_ago_LossEstimateSensitivityAnalysisChangeInEstimateForIncreasedConditionalDefaultRatePlateauPeriod_label_en-US" xlink:label="lab_ago_LossEstimateSensitivityAnalysisChangeInEstimateForIncreasedConditionalDefaultRatePlateauPeriod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Estimate Sensitivity Analysis Change in Estimate for Increased Conditional Default Rate Plateau Period</link:label>
    <link:label id="lab_ago_LossEstimateSensitivityAnalysisChangeInEstimateForIncreasedConditionalDefaultRatePlateauPeriod_documentation_en-US" xlink:label="lab_ago_LossEstimateSensitivityAnalysisChangeInEstimateForIncreasedConditionalDefaultRatePlateauPeriod" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the change in expected loss on a pool of insured obligations that would result from an increase in the conditional default rate plateau period.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_LossEstimateSensitivityAnalysisChangeInEstimateForIncreasedConditionalDefaultRatePlateauPeriod" xlink:href="ago-20240630.xsd#ago_LossEstimateSensitivityAnalysisChangeInEstimateForIncreasedConditionalDefaultRatePlateauPeriod"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_LossEstimateSensitivityAnalysisChangeInEstimateForIncreasedConditionalDefaultRatePlateauPeriod" xlink:to="lab_ago_LossEstimateSensitivityAnalysisChangeInEstimateForIncreasedConditionalDefaultRatePlateauPeriod" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_e56d1d97-ed22-4aad-ac6a-7774bc2a26f4_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gross Unrealized Gains</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax" xlink:to="lab_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_AdditionalLossRecoveryAssumptionRecoveryPeriod_d670399a-9f25-4ab6-9491-16f5c3294f5d_terseLabel_en-US" xlink:label="lab_ago_AdditionalLossRecoveryAssumptionRecoveryPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Additional loss recovery assumption, recovery period</link:label>
    <link:label id="lab_ago_AdditionalLossRecoveryAssumptionRecoveryPeriod_label_en-US" xlink:label="lab_ago_AdditionalLossRecoveryAssumptionRecoveryPeriod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Additional Loss Recovery Assumption, Recovery Period</link:label>
    <link:label id="lab_ago_AdditionalLossRecoveryAssumptionRecoveryPeriod_documentation_en-US" xlink:label="lab_ago_AdditionalLossRecoveryAssumptionRecoveryPeriod" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Additional Loss Recovery Assumption, Recovery Period</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_AdditionalLossRecoveryAssumptionRecoveryPeriod" xlink:href="ago-20240630.xsd#ago_AdditionalLossRecoveryAssumptionRecoveryPeriod"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_AdditionalLossRecoveryAssumptionRecoveryPeriod" xlink:to="lab_ago_AdditionalLossRecoveryAssumptionRecoveryPeriod" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueOptionLoansHeldAsAssets90DaysOrMorePastDue_417e1f58-02fd-4f40-b000-16bda3dd83d2_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueOptionLoansHeldAsAssets90DaysOrMorePastDue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unpaid principal balance for FG VIEs&#8217; assets that were 90&#160;days or more past due</link:label>
    <link:label id="lab_us-gaap_FairValueOptionLoansHeldAsAssets90DaysOrMorePastDue_label_en-US" xlink:label="lab_us-gaap_FairValueOptionLoansHeldAsAssets90DaysOrMorePastDue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Option, Loans Held as Assets, 90 Days or More Past Due</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueOptionLoansHeldAsAssets90DaysOrMorePastDue" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueOptionLoansHeldAsAssets90DaysOrMorePastDue"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueOptionLoansHeldAsAssets90DaysOrMorePastDue" xlink:to="lab_us-gaap_FairValueOptionLoansHeldAsAssets90DaysOrMorePastDue" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_TotalStressPeriod_c954b094-4832-456c-a637-fdee45c79a2b_terseLabel_en-US" xlink:label="lab_ago_TotalStressPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stress period (in months)</link:label>
    <link:label id="lab_ago_TotalStressPeriod_label_en-US" xlink:label="lab_ago_TotalStressPeriod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Total Stress Period</link:label>
    <link:label id="lab_ago_TotalStressPeriod_documentation_en-US" xlink:label="lab_ago_TotalStressPeriod" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the total stress period.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_TotalStressPeriod" xlink:href="ago-20240630.xsd#ago_TotalStressPeriod"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_TotalStressPeriod" xlink:to="lab_ago_TotalStressPeriod" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_OtherCommitmentsDomain_3ab3fa5c-a708-42df-9e9f-20465f490043_terseLabel_en-US" xlink:label="lab_us-gaap_OtherCommitmentsDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Commitments [Domain]</link:label>
    <link:label id="lab_us-gaap_OtherCommitmentsDomain_label_en-US" xlink:label="lab_us-gaap_OtherCommitmentsDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Commitments [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherCommitmentsDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherCommitmentsDomain" xlink:to="lab_us-gaap_OtherCommitmentsDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_AssetsFairValueDisclosureAbstract_e45780ba-f4a8-405b-a739-0fd6f60df6d0_verboseLabel_en-US" xlink:label="lab_us-gaap_AssetsFairValueDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Assets:</link:label>
    <link:label id="lab_us-gaap_AssetsFairValueDisclosureAbstract_label_en-US" xlink:label="lab_us-gaap_AssetsFairValueDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets, Fair Value Disclosure [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosureAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetsFairValueDisclosureAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract" xlink:to="lab_us-gaap_AssetsFairValueDisclosureAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThan15AndWithin20YearsFromBalanceSheetDate_3d93f351-8639-4d3f-b651-ce69ed849123_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThan15AndWithin20YearsFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2039-2043</link:label>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThan15AndWithin20YearsFromBalanceSheetDate_label_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThan15AndWithin20YearsFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contract, Premium Revenue to be Recognized, after Year 15 Through 20</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThan15AndWithin20YearsFromBalanceSheetDate" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThan15AndWithin20YearsFromBalanceSheetDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThan15AndWithin20YearsFromBalanceSheetDate" xlink:to="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThan15AndWithin20YearsFromBalanceSheetDate" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ExpectedLossAdjustmentExpenseToBePaid_1a10ee75-be07-47cd-9fc7-7edbb1046b91_terseLabel_en-US" xlink:label="lab_ago_ExpectedLossAdjustmentExpenseToBePaid" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected LAE to be paid</link:label>
    <link:label id="lab_ago_ExpectedLossAdjustmentExpenseToBePaid_label_en-US" xlink:label="lab_ago_ExpectedLossAdjustmentExpenseToBePaid" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Expected Loss Adjustment Expense To Be Paid</link:label>
    <link:label id="lab_ago_ExpectedLossAdjustmentExpenseToBePaid_documentation_en-US" xlink:label="lab_ago_ExpectedLossAdjustmentExpenseToBePaid" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Expected Loss Adjustment Expense To Be Paid</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ExpectedLossAdjustmentExpenseToBePaid" xlink:href="ago-20240630.xsd#ago_ExpectedLossAdjustmentExpenseToBePaid"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ExpectedLossAdjustmentExpenseToBePaid" xlink:to="lab_ago_ExpectedLossAdjustmentExpenseToBePaid" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_RelatedPartyDomain_2cda1419-d731-4a2e-b49f-2d67731a2549_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Related Party [Domain]</link:label>
    <link:label id="lab_us-gaap_RelatedPartyDomain_label_en-US" xlink:label="lab_us-gaap_RelatedPartyDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Related and Nonrelated Parties [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyDomain" xlink:to="lab_us-gaap_RelatedPartyDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InsuranceContractsMember_4e1b85ae-f4b3-4009-96a3-6315e16a6aae_terseLabel_en-US" xlink:label="lab_ago_InsuranceContractsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Insurance</link:label>
    <link:label id="lab_ago_InsuranceContractsMember_label_en-US" xlink:label="lab_ago_InsuranceContractsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insurance Contracts [Member]</link:label>
    <link:label id="lab_ago_InsuranceContractsMember_documentation_en-US" xlink:label="lab_ago_InsuranceContractsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Insurance Contracts [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuranceContractsMember" xlink:href="ago-20240630.xsd#ago_InsuranceContractsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InsuranceContractsMember" xlink:to="lab_ago_InsuranceContractsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuarantyVariableInterestEntitiesMember_8c33a57c-60ba-4b4f-a172-9ee9049789f2_terseLabel_en-US" xlink:label="lab_ago_FinancialGuarantyVariableInterestEntitiesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial Guaranty Variable Interest Entities</link:label>
    <link:label id="lab_ago_FinancialGuarantyVariableInterestEntitiesMember_label_en-US" xlink:label="lab_ago_FinancialGuarantyVariableInterestEntitiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guaranty Variable Interest Entities [Member]</link:label>
    <link:label id="lab_ago_FinancialGuarantyVariableInterestEntitiesMember_documentation_en-US" xlink:label="lab_ago_FinancialGuarantyVariableInterestEntitiesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financial Guaranty Variable Interest Entities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuarantyVariableInterestEntitiesMember" xlink:href="ago-20240630.xsd#ago_FinancialGuarantyVariableInterestEntitiesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuarantyVariableInterestEntitiesMember" xlink:to="lab_ago_FinancialGuarantyVariableInterestEntitiesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancingReceivableForeclosureMember_ea247dc6-a711-4191-91ef-cb4f0c2fb9ec_terseLabel_en-US" xlink:label="lab_ago_FinancingReceivableForeclosureMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Foreclosure</link:label>
    <link:label id="lab_ago_FinancingReceivableForeclosureMember_label_en-US" xlink:label="lab_ago_FinancingReceivableForeclosureMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Receivable, Foreclosure [Member]</link:label>
    <link:label id="lab_ago_FinancingReceivableForeclosureMember_documentation_en-US" xlink:label="lab_ago_FinancingReceivableForeclosureMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financing Receivable, Foreclosure [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancingReceivableForeclosureMember" xlink:href="ago-20240630.xsd#ago_FinancingReceivableForeclosureMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancingReceivableForeclosureMember" xlink:to="lab_ago_FinancingReceivableForeclosureMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsAbstract_b5323d62-d3d7-467e-807c-347a7cc8a4fb_terseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Scheduled Net Debt Service Amortization</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsAbstract_label_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Contractual Payments [Abstract]</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsAbstract_documentation_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Contractual Payments [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsAbstract" xlink:href="ago-20240630.xsd#ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsAbstract" xlink:to="lab_ago_InsuredFinancialObligationsMaturitiesofOutstandingContractualPaymentsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueByLiabilityClassAxis_a75eafcf-e48e-42c2-bdeb-847ba45ab48a_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueByLiabilityClassAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Liability Class [Axis]</link:label>
    <link:label id="lab_us-gaap_FairValueByLiabilityClassAxis_label_en-US" xlink:label="lab_us-gaap_FairValueByLiabilityClassAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liability Class [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByLiabilityClassAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueByLiabilityClassAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueByLiabilityClassAxis" xlink:to="lab_us-gaap_FairValueByLiabilityClassAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ProceedsFromRepaymentsOfLinesOfCredit_e9971de6-1356-4b2e-95cf-d2a85c9fc8f5_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromRepaymentsOfLinesOfCredit" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Borrowing (payment) under credit facilities</link:label>
    <link:label id="lab_us-gaap_ProceedsFromRepaymentsOfLinesOfCredit_label_en-US" xlink:label="lab_us-gaap_ProceedsFromRepaymentsOfLinesOfCredit" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from (Repayments of) Lines of Credit</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromRepaymentsOfLinesOfCredit" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromRepaymentsOfLinesOfCredit"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromRepaymentsOfLinesOfCredit" xlink:to="lab_us-gaap_ProceedsFromRepaymentsOfLinesOfCredit" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_OtherComprehensiveIncomeLossOtherNetofTaxPortionAttributableToParent_8cee2599-ff34-41d7-80bd-c2c90cae78a0_terseLabel_en-US" xlink:label="lab_ago_OtherComprehensiveIncomeLossOtherNetofTaxPortionAttributableToParent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other, net of tax provision (benefit)</link:label>
    <link:label id="lab_ago_OtherComprehensiveIncomeLossOtherNetofTaxPortionAttributableToParent_label_en-US" xlink:label="lab_ago_OtherComprehensiveIncomeLossOtherNetofTaxPortionAttributableToParent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), Other, Net of Tax, Portion Attributable To Parent</link:label>
    <link:label id="lab_ago_OtherComprehensiveIncomeLossOtherNetofTaxPortionAttributableToParent_documentation_en-US" xlink:label="lab_ago_OtherComprehensiveIncomeLossOtherNetofTaxPortionAttributableToParent" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent and Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax, Portion Attributable to Parent</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_OtherComprehensiveIncomeLossOtherNetofTaxPortionAttributableToParent" xlink:href="ago-20240630.xsd#ago_OtherComprehensiveIncomeLossOtherNetofTaxPortionAttributableToParent"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_OtherComprehensiveIncomeLossOtherNetofTaxPortionAttributableToParent" xlink:to="lab_ago_OtherComprehensiveIncomeLossOtherNetofTaxPortionAttributableToParent" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedMoreThan14AndWithin19YearsFromBalanceSheetDate_50e5f335-d5da-4bad-9d98-d70dc98b69f9_terseLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedMoreThan14AndWithin19YearsFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2039-2043</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedMoreThan14AndWithin19YearsFromBalanceSheetDate_label_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedMoreThan14AndWithin19YearsFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts Future Expected Net Loss to be Expensed More than 14 and Within 19 Years from Balance Sheet Date</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedMoreThan14AndWithin19YearsFromBalanceSheetDate_documentation_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedMoreThan14AndWithin19YearsFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts Future Expected Net Loss to be Expensed More than 14 and Within 19 Years from Balance Sheet Date</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedMoreThan14AndWithin19YearsFromBalanceSheetDate" xlink:href="ago-20240630.xsd#ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedMoreThan14AndWithin19YearsFromBalanceSheetDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedMoreThan14AndWithin19YearsFromBalanceSheetDate" xlink:to="lab_ago_FinancialGuaranteeInsuranceContractsFutureExpectedNetLossToBeExpensedMoreThan14AndWithin19YearsFromBalanceSheetDate" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuarantyOfVariableInterestEntitiesAssetsHeld_42eedcbf-37ab-472d-9bc1-b87afe864d82_terseLabel_en-US" xlink:label="lab_ago_FinancialGuarantyOfVariableInterestEntitiesAssetsHeld" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial guaranty variable interest entities&#8217; assets (includes $160 and $174, at fair value)</link:label>
    <link:label id="lab_ago_FinancialGuarantyOfVariableInterestEntitiesAssetsHeld_label_en-US" xlink:label="lab_ago_FinancialGuarantyOfVariableInterestEntitiesAssetsHeld" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guaranty Of Variable Interest Entities, Assets Held</link:label>
    <link:label id="lab_ago_FinancialGuarantyOfVariableInterestEntitiesAssetsHeld_documentation_en-US" xlink:label="lab_ago_FinancialGuarantyOfVariableInterestEntitiesAssetsHeld" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financial Guaranty Of Variable Interest Entities, Assets Held</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuarantyOfVariableInterestEntitiesAssetsHeld" xlink:href="ago-20240630.xsd#ago_FinancialGuarantyOfVariableInterestEntitiesAssetsHeld"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuarantyOfVariableInterestEntitiesAssetsHeld" xlink:to="lab_ago_FinancialGuarantyOfVariableInterestEntitiesAssetsHeld" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InsuredFinancialObligationsOutstandingPrincipalAmountGross_8f6249f2-fcef-4d9e-8bf9-441cabf1abb4_terseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsOutstandingPrincipalAmountGross" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gross</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsOutstandingPrincipalAmountGross_8bb2b811-8bed-4f72-9ed8-c10480673030_verboseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsOutstandingPrincipalAmountGross" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Exposure to Puerto Rico</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsOutstandingPrincipalAmountGross_label_en-US" xlink:label="lab_ago_InsuredFinancialObligationsOutstandingPrincipalAmountGross" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations Outstanding Principal Amount, Gross</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsOutstandingPrincipalAmountGross_documentation_en-US" xlink:label="lab_ago_InsuredFinancialObligationsOutstandingPrincipalAmountGross" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the outstanding principal amounts of the underlying insured obligations for financial guaranty contracts, gross of ceded contracts.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuredFinancialObligationsOutstandingPrincipalAmountGross" xlink:href="ago-20240630.xsd#ago_InsuredFinancialObligationsOutstandingPrincipalAmountGross"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InsuredFinancialObligationsOutstandingPrincipalAmountGross" xlink:to="lab_ago_InsuredFinancialObligationsOutstandingPrincipalAmountGross" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InsuredFinancialObligationsProbabilityofPayingMoreClaimsthanReimbursedPercentage_0bc85bcd-83fd-4bcc-a4a4-3defbc7c6fbf_terseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsProbabilityofPayingMoreClaimsthanReimbursedPercentage" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Probability of paying more claims than being reimbursed (as a percent)</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsProbabilityofPayingMoreClaimsthanReimbursedPercentage_label_en-US" xlink:label="lab_ago_InsuredFinancialObligationsProbabilityofPayingMoreClaimsthanReimbursedPercentage" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Probability of Paying More Claims than Reimbursed, Percentage</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsProbabilityofPayingMoreClaimsthanReimbursedPercentage_documentation_en-US" xlink:label="lab_ago_InsuredFinancialObligationsProbabilityofPayingMoreClaimsthanReimbursedPercentage" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Probability that, on a present value basis, the entity will pay more claims over the life of that transaction than it will ultimately have been reimbursed.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuredFinancialObligationsProbabilityofPayingMoreClaimsthanReimbursedPercentage" xlink:href="ago-20240630.xsd#ago_InsuredFinancialObligationsProbabilityofPayingMoreClaimsthanReimbursedPercentage"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InsuredFinancialObligationsProbabilityofPayingMoreClaimsthanReimbursedPercentage" xlink:to="lab_ago_InsuredFinancialObligationsProbabilityofPayingMoreClaimsthanReimbursedPercentage" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_StockRepurchasedDuringPeriodShares_c14f165c-e75c-4c01-ba2f-622f34e3c75f_terseLabel_en-US" xlink:label="lab_us-gaap_StockRepurchasedDuringPeriodShares" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Shares repurchased (in shares)</link:label>
    <link:label id="lab_us-gaap_StockRepurchasedDuringPeriodShares_label_en-US" xlink:label="lab_us-gaap_StockRepurchasedDuringPeriodShares" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock Repurchased During Period, Shares</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodShares" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockRepurchasedDuringPeriodShares"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockRepurchasedDuringPeriodShares" xlink:to="lab_us-gaap_StockRepurchasedDuringPeriodShares" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ValuationTechniqueAxis_66a47b17-21bf-477f-93fa-67d1bfa27dd1_terseLabel_en-US" xlink:label="lab_us-gaap_ValuationTechniqueAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Valuation Approach and Technique [Axis]</link:label>
    <link:label id="lab_us-gaap_ValuationTechniqueAxis_label_en-US" xlink:label="lab_us-gaap_ValuationTechniqueAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Valuation Approach and Technique [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ValuationTechniqueAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ValuationTechniqueAxis" xlink:to="lab_us-gaap_ValuationTechniqueAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions_65c70ef6-ec9c-4e5a-812e-e8f1af9bd58c_terseLabel_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of securities</link:label>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions_label_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions" xlink:to="lab_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivable_e4fc2ae4-a619-4de2-98ca-bc7d88c0fce6_periodStartLabel_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivable" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Beginning of year</link:label>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivable_5c574416-8d91-49af-ad8e-351cfb4a90e2_periodEndLabel_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivable" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending balance</link:label>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivable_d7c14ead-2616-40ab-bf6c-a4d4f5b4002b_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Premiums receivable, net of commissions payable</link:label>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivable_label_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Premium Receivable</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivable" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivable" xlink:to="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivable" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsNumberofScenariosConsidered_20a48a47-8adc-4235-93d1-712f17a5467f_terseLabel_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsNumberofScenariosConsidered" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of scenarios weighted in estimating expected losses</link:label>
    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsNumberofScenariosConsidered_label_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsNumberofScenariosConsidered" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Projected Loss Assumptions, Number of Scenarios Considered</link:label>
    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsNumberofScenariosConsidered_documentation_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsNumberofScenariosConsidered" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the number of scenarios used during the current period in estimation of expected loss on a pool of insured obligations.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_GuarantorObligationsProjectedLossAssumptionsNumberofScenariosConsidered" xlink:href="ago-20240630.xsd#ago_GuarantorObligationsProjectedLossAssumptionsNumberofScenariosConsidered"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_GuarantorObligationsProjectedLossAssumptionsNumberofScenariosConsidered" xlink:to="lab_ago_GuarantorObligationsProjectedLossAssumptionsNumberofScenariosConsidered" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsPremiumsReceivableAdjustmentForeignExchangeTranslation_e9043646-de44-433f-9c0b-067233640a8b_terseLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsPremiumsReceivableAdjustmentForeignExchangeTranslation" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Foreign exchange gain (loss) on remeasurement</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsPremiumsReceivableAdjustmentForeignExchangeTranslation_label_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsPremiumsReceivableAdjustmentForeignExchangeTranslation" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Premiums Receivable Adjustment Foreign Exchange Translation</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsPremiumsReceivableAdjustmentForeignExchangeTranslation_documentation_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsPremiumsReceivableAdjustmentForeignExchangeTranslation" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents gains or losses due to foreign exchange rate changes that relate to installment premium receivables on financial guaranty insurance contracts denominated in currencies other than U.S. dollar.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuaranteeInsuranceContractsPremiumsReceivableAdjustmentForeignExchangeTranslation" xlink:href="ago-20240630.xsd#ago_FinancialGuaranteeInsuranceContractsPremiumsReceivableAdjustmentForeignExchangeTranslation"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuaranteeInsuranceContractsPremiumsReceivableAdjustmentForeignExchangeTranslation" xlink:to="lab_ago_FinancialGuaranteeInsuranceContractsPremiumsReceivableAdjustmentForeignExchangeTranslation" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_03568f3b-5eb1-443a-bf6e-2f4541cddafd_terseLabel_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contingencies</link:label>
    <link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commitments and Contingencies Disclosure [Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommitmentsAndContingenciesDisclosureTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:to="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_MeasureAxis_terseLabel_en-US" xlink:label="lab_ecd_MeasureAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Measure:</link:label>
    <link:label id="lab_ecd_MeasureAxis_label_en-US" xlink:label="lab_ecd_MeasureAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Measure [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_MeasureAxis" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_MeasureAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_MeasureAxis" xlink:to="lab_ecd_MeasureAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_UnearnedPremiums_14291be1-f4f6-49c2-a49e-bc3b6b4f9be3_terseLabel_en-US" xlink:label="lab_us-gaap_UnearnedPremiums" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unearned premium reserve</link:label>
    <link:label id="lab_us-gaap_UnearnedPremiums_label_en-US" xlink:label="lab_us-gaap_UnearnedPremiums" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unearned Premiums</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnearnedPremiums" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_UnearnedPremiums"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UnearnedPremiums" xlink:to="lab_us-gaap_UnearnedPremiums" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_f6a76340-e339-4acd-8c29-8dcf460302d5_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Asset Class [Domain]</link:label>
    <link:label id="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_26e528d6-fc6e-41d7-8323-8e0b9dd550b3_verboseLabel_en-US" xlink:label="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Asset Class [Domain]</link:label>
    <link:label id="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_label_en-US" xlink:label="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Asset Class [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:to="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_InvestmentsAbstract_c5c08048-9e78-46d4-a2b2-814d285c6326_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investments:</link:label>
    <link:label id="lab_us-gaap_InvestmentsAbstract_label_en-US" xlink:label="lab_us-gaap_InvestmentsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investments [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InvestmentsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentsAbstract" xlink:to="lab_us-gaap_InvestmentsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_CreditDerivativeRealizedGainLossandOtherSettlements_ea21bf88-383a-4c7a-be0c-c856109fefab_terseLabel_en-US" xlink:label="lab_ago_CreditDerivativeRealizedGainLossandOtherSettlements" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Realized gains (losses) and other settlements</link:label>
    <link:label id="lab_ago_CreditDerivativeRealizedGainLossandOtherSettlements_label_en-US" xlink:label="lab_ago_CreditDerivativeRealizedGainLossandOtherSettlements" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Credit Derivative, Realized Gain (Loss) and Other Settlements</link:label>
    <link:label id="lab_ago_CreditDerivativeRealizedGainLossandOtherSettlements_documentation_en-US" xlink:label="lab_ago_CreditDerivativeRealizedGainLossandOtherSettlements" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the premiums received and receivable, ceding commissions, and the losses paid and payable. This element refers to the gain (loss) included in earnings.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_CreditDerivativeRealizedGainLossandOtherSettlements" xlink:href="ago-20240630.xsd#ago_CreditDerivativeRealizedGainLossandOtherSettlements"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_CreditDerivativeRealizedGainLossandOtherSettlements" xlink:to="lab_ago_CreditDerivativeRealizedGainLossandOtherSettlements" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_CreditDefaultSwapMember_fd6d576d-3fa0-4070-b1b0-82fc363a34b3_terseLabel_en-US" xlink:label="lab_us-gaap_CreditDefaultSwapMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_us-gaap_CreditDefaultSwapMember_label_en-US" xlink:label="lab_us-gaap_CreditDefaultSwapMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Credit Default Swap [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditDefaultSwapMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CreditDefaultSwapMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CreditDefaultSwapMember" xlink:to="lab_us-gaap_CreditDefaultSwapMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions_a6939776-d27f-4e96-866c-307ded178de3_terseLabel_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of securities</link:label>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions_label_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions" xlink:to="lab_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityEmergingGrowthCompany_381d8a92-2fca-4ddb-9349-65731cc69e02_terseLabel_en-US" xlink:label="lab_dei_EntityEmergingGrowthCompany" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Emerging Growth Company</link:label>
    <link:label id="lab_dei_EntityEmergingGrowthCompany_label_en-US" xlink:label="lab_dei_EntityEmergingGrowthCompany" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Emerging Growth Company</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityEmergingGrowthCompany" xlink:to="lab_dei_EntityEmergingGrowthCompany" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThanOneAndWithinTwoYearsFromBalanceSheetDate_7639abd4-b0de-45b9-99a7-1a46f5301733_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThanOneAndWithinTwoYearsFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2025</link:label>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThanOneAndWithinTwoYearsFromBalanceSheetDate_label_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThanOneAndWithinTwoYearsFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contract, Premium Revenue to be Recognized, Year Two</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThanOneAndWithinTwoYearsFromBalanceSheetDate" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThanOneAndWithinTwoYearsFromBalanceSheetDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThanOneAndWithinTwoYearsFromBalanceSheetDate" xlink:to="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThanOneAndWithinTwoYearsFromBalanceSheetDate" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_TotalPretaxRealizedAndUnrealizedGainsLossesRecordedAsLiabilitiesAbstract_266c705a-9152-4fdb-b808-5215d78de048_terseLabel_en-US" xlink:label="lab_ago_TotalPretaxRealizedAndUnrealizedGainsLossesRecordedAsLiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total Pretax Realized And Unrealized Gains (Losses) Recorded As Liabilities [Abstract]</link:label>
    <link:label id="lab_ago_TotalPretaxRealizedAndUnrealizedGainsLossesRecordedAsLiabilitiesAbstract_label_en-US" xlink:label="lab_ago_TotalPretaxRealizedAndUnrealizedGainsLossesRecordedAsLiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Total Pretax Realized And Unrealized Gains (Losses) Recorded As Liabilities [Abstract]</link:label>
    <link:label id="lab_ago_TotalPretaxRealizedAndUnrealizedGainsLossesRecordedAsLiabilitiesAbstract_documentation_en-US" xlink:label="lab_ago_TotalPretaxRealizedAndUnrealizedGainsLossesRecordedAsLiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Total Pretax Realized And Unrealized Gains (Losses) Recorded As Liabilities [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_TotalPretaxRealizedAndUnrealizedGainsLossesRecordedAsLiabilitiesAbstract" xlink:href="ago-20240630.xsd#ago_TotalPretaxRealizedAndUnrealizedGainsLossesRecordedAsLiabilitiesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_TotalPretaxRealizedAndUnrealizedGainsLossesRecordedAsLiabilitiesAbstract" xlink:to="lab_ago_TotalPretaxRealizedAndUnrealizedGainsLossesRecordedAsLiabilitiesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ReconciliationOfNetExpectedLossToBePaidAndNetExpectedLossToBeExpensedTableTextBlock_dec6767d-b1f7-4955-9431-f0391338c2b9_terseLabel_en-US" xlink:label="lab_ago_ReconciliationOfNetExpectedLossToBePaidAndNetExpectedLossToBeExpensedTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reconciliation of Net Expected Loss to be Paid and Net Expected Loss to be Expensed Financial Guaranty Insurance Contracts</link:label>
    <link:label id="lab_ago_ReconciliationOfNetExpectedLossToBePaidAndNetExpectedLossToBeExpensedTableTextBlock_label_en-US" xlink:label="lab_ago_ReconciliationOfNetExpectedLossToBePaidAndNetExpectedLossToBeExpensedTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reconciliation of Net Expected Loss to be Paid and Net Expected Loss to be Expensed [Table Text Block]</link:label>
    <link:label id="lab_ago_ReconciliationOfNetExpectedLossToBePaidAndNetExpectedLossToBeExpensedTableTextBlock_documentation_en-US" xlink:label="lab_ago_ReconciliationOfNetExpectedLossToBePaidAndNetExpectedLossToBeExpensedTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tabular disclosure of the reconciliation of expected loss to be paid and net expected loss to be expensed.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ReconciliationOfNetExpectedLossToBePaidAndNetExpectedLossToBeExpensedTableTextBlock" xlink:href="ago-20240630.xsd#ago_ReconciliationOfNetExpectedLossToBePaidAndNetExpectedLossToBeExpensedTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ReconciliationOfNetExpectedLossToBePaidAndNetExpectedLossToBeExpensedTableTextBlock" xlink:to="lab_ago_ReconciliationOfNetExpectedLossToBePaidAndNetExpectedLossToBeExpensedTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_IncomeTaxBenefitPeriodOfRecognition_5e0a23e9-5264-4e9b-bd0f-312220066de0_terseLabel_en-US" xlink:label="lab_ago_IncomeTaxBenefitPeriodOfRecognition" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income tax benefit, period of recognition</link:label>
    <link:label id="lab_ago_IncomeTaxBenefitPeriodOfRecognition_label_en-US" xlink:label="lab_ago_IncomeTaxBenefitPeriodOfRecognition" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Benefit, Period Of Recognition</link:label>
    <link:label id="lab_ago_IncomeTaxBenefitPeriodOfRecognition_documentation_en-US" xlink:label="lab_ago_IncomeTaxBenefitPeriodOfRecognition" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Income Tax Benefit, Period Of Recognition</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_IncomeTaxBenefitPeriodOfRecognition" xlink:href="ago-20240630.xsd#ago_IncomeTaxBenefitPeriodOfRecognition"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_IncomeTaxBenefitPeriodOfRecognition" xlink:to="lab_ago_IncomeTaxBenefitPeriodOfRecognition" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_LiabilitiesFairValueDisclosure_4f04d212-0ad8-4979-9adb-275f5caf869a_totalLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesFairValueDisclosure" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total liabilities carried at fair value</link:label>
    <link:label id="lab_us-gaap_LiabilitiesFairValueDisclosure_898340f0-a0b8-45d7-b74a-9cb7f8cf6d7c_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesFairValueDisclosure" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Fair value</link:label>
    <link:label id="lab_us-gaap_LiabilitiesFairValueDisclosure_label_en-US" xlink:label="lab_us-gaap_LiabilitiesFairValueDisclosure" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities, Fair Value Disclosure</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosure" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesFairValueDisclosure"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosure" xlink:to="lab_us-gaap_LiabilitiesFairValueDisclosure" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements_e14945b3-bc6e-4a7b-9395-20dfd4b83dc6_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Settlements</link:label>
    <link:label id="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements_label_en-US" xlink:label="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements" xlink:to="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_OtherInvestmentsMember_52a7a2ac-a942-473a-816f-f5f9a702c9fe_terseLabel_en-US" xlink:label="lab_us-gaap_OtherInvestmentsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other</link:label>
    <link:label id="lab_us-gaap_OtherInvestmentsMember_label_en-US" xlink:label="lab_us-gaap_OtherInvestmentsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Investments [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherInvestmentsMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherInvestmentsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherInvestmentsMember" xlink:to="lab_us-gaap_OtherInvestmentsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearOne_edf9c45e-c29e-4083-93ff-a1cf697b23a4_terseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearOne" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2025</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearOne_label_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearOne" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Principal Amount, Year One</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearOne_documentation_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearOne" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Principal Amount, Year One</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearOne" xlink:href="ago-20240630.xsd#ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearOne"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearOne" xlink:to="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountYearOne" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_VariableInterestEntityChangeinFairValue_ca4b4d11-d843-4955-9f85-d16507acedc8_terseLabel_en-US" xlink:label="lab_ago_VariableInterestEntityChangeinFairValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair value gains (losses) on financial guaranty variable interest entities</link:label>
    <link:label id="lab_ago_VariableInterestEntityChangeinFairValue_label_en-US" xlink:label="lab_ago_VariableInterestEntityChangeinFairValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable Interest Entity, Change in Fair Value</link:label>
    <link:label id="lab_ago_VariableInterestEntityChangeinFairValue_documentation_en-US" xlink:label="lab_ago_VariableInterestEntityChangeinFairValue" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The amount of the variable interest entity's revenues consolidated into the statement of income, including interest income, net realized and unrealized gains (losses) on assets, and other income, net of the amount of the variable interest entity's expenses consolidated into the statement of income, including interest expense, net realized and unrealized gains (losses) on liabilities with and without recourse, and other expenses.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_VariableInterestEntityChangeinFairValue" xlink:href="ago-20240630.xsd#ago_VariableInterestEntityChangeinFairValue"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_VariableInterestEntityChangeinFairValue" xlink:to="lab_ago_VariableInterestEntityChangeinFairValue" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsAcceleratedPremiumRevenueAmount_c4c4fe91-6f11-4d12-9c0e-771df51051a1_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsAcceleratedPremiumRevenueAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accelerations from refundings and terminations</link:label>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsAcceleratedPremiumRevenueAmount_label_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsAcceleratedPremiumRevenueAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Accelerated Premium Revenue, Amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialGuaranteeInsuranceContractsAcceleratedPremiumRevenueAmount" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancialGuaranteeInsuranceContractsAcceleratedPremiumRevenueAmount"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancialGuaranteeInsuranceContractsAcceleratedPremiumRevenueAmount" xlink:to="lab_us-gaap_FinancialGuaranteeInsuranceContractsAcceleratedPremiumRevenueAmount" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_GuaranteeObligationsMember_802bb7f8-faf3-4125-ad87-f82652d2bae0_terseLabel_en-US" xlink:label="lab_us-gaap_GuaranteeObligationsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Guarantee Obligations</link:label>
    <link:label id="lab_us-gaap_GuaranteeObligationsMember_label_en-US" xlink:label="lab_us-gaap_GuaranteeObligationsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Guarantee Obligations [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GuaranteeObligationsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GuaranteeObligationsMember" xlink:to="lab_us-gaap_GuaranteeObligationsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_NonGaapMeasureDescriptionTextBlock_terseLabel_en-US" xlink:label="lab_ecd_NonGaapMeasureDescriptionTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-GAAP Measure Description</link:label>
    <link:label id="lab_ecd_NonGaapMeasureDescriptionTextBlock_label_en-US" xlink:label="lab_ecd_NonGaapMeasureDescriptionTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-GAAP Measure Description [Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_NonGaapMeasureDescriptionTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_NonGaapMeasureDescriptionTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_NonGaapMeasureDescriptionTextBlock" xlink:to="lab_ecd_NonGaapMeasureDescriptionTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InternalInvestmentGradeAAMember_2fee49a6-67dc-46b1-8588-cc432976c799_terseLabel_en-US" xlink:label="lab_ago_InternalInvestmentGradeAAMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">AA</link:label>
    <link:label id="lab_ago_InternalInvestmentGradeAAMember_label_en-US" xlink:label="lab_ago_InternalInvestmentGradeAAMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Internal Investment Grade, AA [Member]</link:label>
    <link:label id="lab_ago_InternalInvestmentGradeAAMember_documentation_en-US" xlink:label="lab_ago_InternalInvestmentGradeAAMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The entity's internal risk assessment category, AA, representing the third lowest risk level. 1</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InternalInvestmentGradeAAMember" xlink:href="ago-20240630.xsd#ago_InternalInvestmentGradeAAMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InternalInvestmentGradeAAMember" xlink:to="lab_ago_InternalInvestmentGradeAAMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingPrincipalNet_d997d0e0-efa3-46e6-87e7-f8309ecd3d37_verboseLabel_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingPrincipalNet" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Net par outstanding, financial guaranty insurance</link:label>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingPrincipalNet_25e3769e-2197-4e69-b3c9-69735af45a68_terseLabel_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingPrincipalNet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingPrincipalNet_label_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingPrincipalNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations with Credit Deterioration Insured Contractual Payments Outstanding Principal Net</link:label>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingPrincipalNet_documentation_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingPrincipalNet" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This element represents the amount of insured contractual payments outstanding attributable to the principal of the underlying insured obligations for financial guaranty insurance contracts presented in the context of each surveillance grouping or category used by management to monitor and track potential deterioration in the credit worthiness of the insured party's ability to meet its financial obligations related to the contracts underlying financial guaranty insurance contracts, before adjusting for the effect of consolidating VIEs.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingPrincipalNet" xlink:href="ago-20240630.xsd#ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingPrincipalNet"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingPrincipalNet" xlink:to="lab_ago_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingPrincipalNet" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_AssuredGuarantyUSHoldingsInc3150SeniorNotesDue2031Member_b9b658c1-63b8-43c4-b1bc-7d8478012e79_terseLabel_en-US" xlink:label="lab_ago_AssuredGuarantyUSHoldingsInc3150SeniorNotesDue2031Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Assured Guaranty US Holdings Inc. 3.150% Senior Notes due 2031 (and the related guarantee of Registrant)</link:label>
    <link:label id="lab_ago_AssuredGuarantyUSHoldingsInc3150SeniorNotesDue2031Member_label_en-US" xlink:label="lab_ago_AssuredGuarantyUSHoldingsInc3150SeniorNotesDue2031Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assured Guaranty US Holdings Inc. 3.150% Senior Notes due 2031 [Member]</link:label>
    <link:label id="lab_ago_AssuredGuarantyUSHoldingsInc3150SeniorNotesDue2031Member_documentation_en-US" xlink:label="lab_ago_AssuredGuarantyUSHoldingsInc3150SeniorNotesDue2031Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Assured Guaranty US Holdings Inc. 3.150% Senior Notes due 2031</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_AssuredGuarantyUSHoldingsInc3150SeniorNotesDue2031Member" xlink:href="ago-20240630.xsd#ago_AssuredGuarantyUSHoldingsInc3150SeniorNotesDue2031Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_AssuredGuarantyUSHoldingsInc3150SeniorNotesDue2031Member" xlink:to="lab_ago_AssuredGuarantyUSHoldingsInc3150SeniorNotesDue2031Member" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_EquityComponentDomain_415af055-b6d0-46e7-9771-94d1caefa5ba_terseLabel_en-US" xlink:label="lab_us-gaap_EquityComponentDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity Component [Domain]</link:label>
    <link:label id="lab_us-gaap_EquityComponentDomain_label_en-US" xlink:label="lab_us-gaap_EquityComponentDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity Component [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EquityComponentDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EquityComponentDomain" xlink:to="lab_us-gaap_EquityComponentDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ClassOfTreasuryStockTable_922e35ad-169c-4bd2-8fcc-b41315b96d5e_terseLabel_en-US" xlink:label="lab_us-gaap_ClassOfTreasuryStockTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Class of Treasury Stock [Table]</link:label>
    <link:label id="lab_us-gaap_ClassOfTreasuryStockTable_label_en-US" xlink:label="lab_us-gaap_ClassOfTreasuryStockTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Class of Treasury Stock [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfTreasuryStockTable" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfTreasuryStockTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ClassOfTreasuryStockTable" xlink:to="lab_us-gaap_ClassOfTreasuryStockTable" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_InterestAndDividendIncomeOperating_7b0e5d92-5c74-404d-94cb-d781f277f3e8_terseLabel_en-US" xlink:label="lab_us-gaap_InterestAndDividendIncomeOperating" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gross investment income</link:label>
    <link:label id="lab_us-gaap_InterestAndDividendIncomeOperating_label_en-US" xlink:label="lab_us-gaap_InterestAndDividendIncomeOperating" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest and Dividend Income, Operating</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestAndDividendIncomeOperating" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestAndDividendIncomeOperating"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestAndDividendIncomeOperating" xlink:to="lab_us-gaap_InterestAndDividendIncomeOperating" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_PooledCorporateObligationMember_c3e68565-6018-4ce6-9006-8d0106dd937f_terseLabel_en-US" xlink:label="lab_ago_PooledCorporateObligationMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pooled corporate obligations</link:label>
    <link:label id="lab_ago_PooledCorporateObligationMember_label_en-US" xlink:label="lab_ago_PooledCorporateObligationMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pooled Corporate Obligation [Member]</link:label>
    <link:label id="lab_ago_PooledCorporateObligationMember_documentation_en-US" xlink:label="lab_ago_PooledCorporateObligationMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Pooled Corporate Obligation</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_PooledCorporateObligationMember" xlink:href="ago-20240630.xsd#ago_PooledCorporateObligationMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_PooledCorporateObligationMember" xlink:to="lab_ago_PooledCorporateObligationMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationRemainingWeightedAverageContractPeriodNet_0ff853ee-1717-4c04-b1a5-9a5404afe0aa_terseLabel_en-US" xlink:label="lab_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationRemainingWeightedAverageContractPeriodNet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total (in years)</link:label>
    <link:label id="lab_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationRemainingWeightedAverageContractPeriodNet_label_en-US" xlink:label="lab_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationRemainingWeightedAverageContractPeriodNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations with Credit Deterioration, Remaining Weighted Average Contract Period, Net</link:label>
    <link:label id="lab_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationRemainingWeightedAverageContractPeriodNet_documentation_en-US" xlink:label="lab_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationRemainingWeightedAverageContractPeriodNet" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This element represents the remaining weighted average contract period of financial guaranty insurance contracts for each surveillance grouping or category used by management to monitor and track potential deterioration in the credit worthiness of the insured party's ability to meet its financial obligations related to the contracts underlying financial guaranty insurance contracts, before adjusting for the effect of consolidating VIEs.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationRemainingWeightedAverageContractPeriodNet" xlink:href="ago-20240630.xsd#ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationRemainingWeightedAverageContractPeriodNet"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationRemainingWeightedAverageContractPeriodNet" xlink:to="lab_ago_ScheduleofInsuredFinancialObligationswithCreditDeteriorationRemainingWeightedAverageContractPeriodNet" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_Additional402vDisclosureTextBlock_terseLabel_en-US" xlink:label="lab_ecd_Additional402vDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Additional 402(v) Disclosure</link:label>
    <link:label id="lab_ecd_Additional402vDisclosureTextBlock_label_en-US" xlink:label="lab_ecd_Additional402vDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Additional 402(v) Disclosure [Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_Additional402vDisclosureTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_Additional402vDisclosureTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_Additional402vDisclosureTextBlock" xlink:to="lab_ecd_Additional402vDisclosureTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_61f143bb-1f19-41a3-95de-a4f99cac1e99_negatedTotalLabel_en-US" xlink:label="lab_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xml:lang="en-US">Total amount reclassified from AOCI, net of tax</link:label>
    <link:label id="lab_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_label_en-US" xlink:label="lab_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax" xlink:to="lab_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityShellCompany_c3ba2ea2-4885-4156-a85d-b915d8aa4aea_terseLabel_en-US" xlink:label="lab_dei_EntityShellCompany" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Shell Company</link:label>
    <link:label id="lab_dei_EntityShellCompany_label_en-US" xlink:label="lab_dei_EntityShellCompany" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Shell Company</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityShellCompany" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityShellCompany"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityShellCompany" xlink:to="lab_dei_EntityShellCompany" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityIncorporationStateCountryCode_ddf45b0a-257d-4b08-a99e-6ed140805b6c_terseLabel_en-US" xlink:label="lab_dei_EntityIncorporationStateCountryCode" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Incorporation, State or Country Code</link:label>
    <link:label id="lab_dei_EntityIncorporationStateCountryCode_label_en-US" xlink:label="lab_dei_EntityIncorporationStateCountryCode" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Incorporation, State or Country Code</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityIncorporationStateCountryCode" xlink:to="lab_dei_EntityIncorporationStateCountryCode" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_PuertoRicoResolvedExposuresSubjectToAPlanSupportAgreementMember_9d258e35-8c6a-42c5-b487-991116cf2f21_terseLabel_en-US" xlink:label="lab_ago_PuertoRicoResolvedExposuresSubjectToAPlanSupportAgreementMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Puerto Rico Resolved Exposures Subject to a Plan Support Agreement</link:label>
    <link:label id="lab_ago_PuertoRicoResolvedExposuresSubjectToAPlanSupportAgreementMember_label_en-US" xlink:label="lab_ago_PuertoRicoResolvedExposuresSubjectToAPlanSupportAgreementMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Puerto Rico Resolved Exposures Subject to a Plan Support Agreement [Member]</link:label>
    <link:label id="lab_ago_PuertoRicoResolvedExposuresSubjectToAPlanSupportAgreementMember_documentation_en-US" xlink:label="lab_ago_PuertoRicoResolvedExposuresSubjectToAPlanSupportAgreementMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Puerto Rico Resolved Exposures Subject to a Plan Support Agreement</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_PuertoRicoResolvedExposuresSubjectToAPlanSupportAgreementMember" xlink:href="ago-20240630.xsd#ago_PuertoRicoResolvedExposuresSubjectToAPlanSupportAgreementMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_PuertoRicoResolvedExposuresSubjectToAPlanSupportAgreementMember" xlink:to="lab_ago_PuertoRicoResolvedExposuresSubjectToAPlanSupportAgreementMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FinancingReceivables30To59DaysPastDueMember_4f245c9c-ff80-4380-b44a-11b359896f1d_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivables30To59DaysPastDueMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">30 &#8211; 59 Days Delinquent</link:label>
    <link:label id="lab_us-gaap_FinancingReceivables30To59DaysPastDueMember_label_en-US" xlink:label="lab_us-gaap_FinancingReceivables30To59DaysPastDueMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Asset, 30 to 59 Days Past Due [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivables30To59DaysPastDueMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivables30To59DaysPastDueMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancingReceivables30To59DaysPastDueMember" xlink:to="lab_us-gaap_FinancingReceivables30To59DaysPastDueMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_GuaranteeObligationsByNatureAxis_0314749f-fb99-45d2-99b6-6e67f65f5341_terseLabel_en-US" xlink:label="lab_us-gaap_GuaranteeObligationsByNatureAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Nature [Axis]</link:label>
    <link:label id="lab_us-gaap_GuaranteeObligationsByNatureAxis_label_en-US" xlink:label="lab_us-gaap_GuaranteeObligationsByNatureAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Nature [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsByNatureAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GuaranteeObligationsByNatureAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GuaranteeObligationsByNatureAxis" xlink:to="lab_us-gaap_GuaranteeObligationsByNatureAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_StatementTable_4cc16383-e198-4215-9718-3bac7de0f1ac_terseLabel_en-US" xlink:label="lab_us-gaap_StatementTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Statement [Table]</link:label>
    <link:label id="lab_us-gaap_StatementTable_label_en-US" xlink:label="lab_us-gaap_StatementTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementTable" xlink:to="lab_us-gaap_StatementTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_DiscontinuedOperationContinuingInvolvementTermToReinvestAllReturnsOfCapital_d80dcf31-ec25-4e3b-bce4-fce611c5c0c9_terseLabel_en-US" xlink:label="lab_ago_DiscontinuedOperationContinuingInvolvementTermToReinvestAllReturnsOfCapital" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Term to reinvest all returns of capital</link:label>
    <link:label id="lab_ago_DiscontinuedOperationContinuingInvolvementTermToReinvestAllReturnsOfCapital_label_en-US" xlink:label="lab_ago_DiscontinuedOperationContinuingInvolvementTermToReinvestAllReturnsOfCapital" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Discontinued Operation, Continuing Involvement, Term To Reinvest All Returns Of Capital</link:label>
    <link:label id="lab_ago_DiscontinuedOperationContinuingInvolvementTermToReinvestAllReturnsOfCapital_documentation_en-US" xlink:label="lab_ago_DiscontinuedOperationContinuingInvolvementTermToReinvestAllReturnsOfCapital" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Discontinued Operation, Continuing Involvement, Term To Reinvest All Returns Of Capital</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_DiscontinuedOperationContinuingInvolvementTermToReinvestAllReturnsOfCapital" xlink:href="ago-20240630.xsd#ago_DiscontinuedOperationContinuingInvolvementTermToReinvestAllReturnsOfCapital"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_DiscontinuedOperationContinuingInvolvementTermToReinvestAllReturnsOfCapital" xlink:to="lab_ago_DiscontinuedOperationContinuingInvolvementTermToReinvestAllReturnsOfCapital" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueMeasurementFrequencyDomain_651cbb8a-55fa-4c45-a21d-896df57ec0ad_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueMeasurementFrequencyDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Measurement Frequency [Domain]</link:label>
    <link:label id="lab_us-gaap_FairValueMeasurementFrequencyDomain_label_en-US" xlink:label="lab_us-gaap_FairValueMeasurementFrequencyDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Measurement Frequency [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain" xlink:to="lab_us-gaap_FairValueMeasurementFrequencyDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_srt_CounterpartyNameAxis_2ea75f1d-421e-404d-982c-939065f83ca3_terseLabel_en-US" xlink:label="lab_srt_CounterpartyNameAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Counterparty Name [Axis]</link:label>
    <link:label id="lab_srt_CounterpartyNameAxis_label_en-US" xlink:label="lab_srt_CounterpartyNameAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Counterparty Name [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_CounterpartyNameAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_CounterpartyNameAxis" xlink:to="lab_srt_CounterpartyNameAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ScheduleOfVariableInterestEntitiesTextBlock_8ef9379c-018a-4075-94c9-21c585b8418b_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfVariableInterestEntitiesTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Consolidated FG VIE's</link:label>
    <link:label id="lab_us-gaap_ScheduleOfVariableInterestEntitiesTextBlock_label_en-US" xlink:label="lab_us-gaap_ScheduleOfVariableInterestEntitiesTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Variable Interest Entities [Table Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfVariableInterestEntitiesTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfVariableInterestEntitiesTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfVariableInterestEntitiesTextBlock" xlink:to="lab_us-gaap_ScheduleOfVariableInterestEntitiesTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_srt_ConsolidationItemsDomain_b1226658-ad63-4960-885f-f22e082bcea2_terseLabel_en-US" xlink:label="lab_srt_ConsolidationItemsDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Consolidation Items [Domain]</link:label>
    <link:label id="lab_srt_ConsolidationItemsDomain_label_en-US" xlink:label="lab_srt_ConsolidationItemsDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Consolidation Items [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ConsolidationItemsDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ConsolidationItemsDomain" xlink:to="lab_srt_ConsolidationItemsDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements_8557a26f-8731-4308-bba1-022da83f821a_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Settlements</link:label>
    <link:label id="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements_label_en-US" xlink:label="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements" xlink:to="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsNetLosstobeExpensedPresentValue_4109e129-17ba-4f14-83b8-f511d89dce03_terseLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsNetLosstobeExpensedPresentValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net expected loss to be expensed (present value)</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsNetLosstobeExpensedPresentValue_1c0b8712-426d-4506-8ced-99d038ad5a29_totalLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsNetLosstobeExpensedPresentValue" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net expected loss to be expensed (present value)</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsNetLosstobeExpensedPresentValue_label_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsNetLosstobeExpensedPresentValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Net Loss to be Expensed, Present Value</link:label>
    <link:label id="lab_ago_FinancialGuaranteeInsuranceContractsNetLosstobeExpensedPresentValue_documentation_en-US" xlink:label="lab_ago_FinancialGuaranteeInsuranceContractsNetLosstobeExpensedPresentValue" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Net Loss to be Expensed, Present Value</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuaranteeInsuranceContractsNetLosstobeExpensedPresentValue" xlink:href="ago-20240630.xsd#ago_FinancialGuaranteeInsuranceContractsNetLosstobeExpensedPresentValue"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuaranteeInsuranceContractsNetLosstobeExpensedPresentValue" xlink:to="lab_ago_FinancialGuaranteeInsuranceContractsNetLosstobeExpensedPresentValue" xlink:type="arc" order="1"/>
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    <link:label id="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_b07870ee-6bcd-47f7-a14f-444b2f4505c3_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Concentration Risk Benchmark [Axis]</link:label>
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    <link:label id="lab_us-gaap_SecondMortgageMember_15c6e78e-215c-4330-8d29-98c0ad3c119a_terseLabel_en-US" xlink:label="lab_us-gaap_SecondMortgageMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Second Lien</link:label>
    <link:label id="lab_us-gaap_SecondMortgageMember_label_en-US" xlink:label="lab_us-gaap_SecondMortgageMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Second Mortgage [Member]</link:label>
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    <link:label id="lab_us-gaap_StatementOfCashFlowsAbstract_b966ed9d-6c30-43ee-a5e7-28843d76e0f0_terseLabel_en-US" xlink:label="lab_us-gaap_StatementOfCashFlowsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Statement of Cash Flows [Abstract]</link:label>
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    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAbstract_c184ded7-7408-40de-8650-4893e3a08934_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Distribution of Fixed Maturity Securities by Contractual Maturity</link:label>
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    <link:label id="lab_ago_PremiumsEarnedNetSpecialtyInsuranceandReinsurance_258f5f0f-858f-48ed-8fa3-34695b805f84_terseLabel_en-US" xlink:label="lab_ago_PremiumsEarnedNetSpecialtyInsuranceandReinsurance" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Specialty net earned premiums</link:label>
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    <link:label id="lab_ago_AssetsofConsolidatedInvestmentVehiclesFairValueDisclosure_65ecdf94-8263-4d62-9b84-c340b1035178_terseLabel_en-US" xlink:label="lab_ago_AssetsofConsolidatedInvestmentVehiclesFairValueDisclosure" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Assets of consolidated investment vehicles, fair value disclosure</link:label>
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    <link:label id="lab_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_aa91299f-02cd-4ed7-bffc-54c9bf36f6c8_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Common shares repurchases</link:label>
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    <link:label id="lab_ago_AlternativeInvestmentMember_88679f58-48b3-41bb-82ad-ca1b96aae685_terseLabel_en-US" xlink:label="lab_ago_AlternativeInvestmentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Alternative Investment</link:label>
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    <link:label id="lab_us-gaap_RecourseMember_f038d0a4-23eb-485e-a5a3-4426658631b4_terseLabel_en-US" xlink:label="lab_us-gaap_RecourseMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Recourse</link:label>
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    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_3e67353c-200e-4fdb-8955-17239bceb9c0_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash flows provided by (used in) financing activities</link:label>
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    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivableRollForward_97cb3803-53f2-473a-838b-487382d3e3e1_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumReceivableRollForward" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gross Premium Receivable Net of Ceding Commissions [Roll Forward]</link:label>
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    <link:label id="lab_us-gaap_CommercialMortgageBackedSecuritiesMember_188bba0c-3e62-4021-bb08-bb825ccdebf0_terseLabel_en-US" xlink:label="lab_us-gaap_CommercialMortgageBackedSecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">CMBS</link:label>
    <link:label id="lab_us-gaap_CommercialMortgageBackedSecuritiesMember_label_en-US" xlink:label="lab_us-gaap_CommercialMortgageBackedSecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commercial Mortgage-Backed Securities [Member]</link:label>
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    <link:label id="lab_us-gaap_FairValueInputsLevel2Member_2ab3eb4f-eec3-4a9f-94ab-fedffe6681cf_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel2Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Level&#160;2</link:label>
    <link:label id="lab_us-gaap_FairValueInputsLevel2Member_label_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel2Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Inputs, Level 2 [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueInputsLevel2Member" xlink:to="lab_us-gaap_FairValueInputsLevel2Member" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_e5423d55-8596-4953-a892-220e6f665fc1_terseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Shareholders&#8217; equity</link:label>
    <link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:to="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_srt_SegmentGeographicalDomain_ea7b9936-15e0-45a2-9b9c-7f235d3bce71_terseLabel_en-US" xlink:label="lab_srt_SegmentGeographicalDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Geographical [Domain]</link:label>
    <link:label id="lab_srt_SegmentGeographicalDomain_label_en-US" xlink:label="lab_srt_SegmentGeographicalDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Geographical [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_SegmentGeographicalDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_SegmentGeographicalDomain" xlink:to="lab_srt_SegmentGeographicalDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FairValueGainLossOnCommittedCapitalSecurities_368fb33e-c8fd-4bd3-b705-63d2194aea8b_terseLabel_en-US" xlink:label="lab_ago_FairValueGainLossOnCommittedCapitalSecurities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair value gains (losses) on committed capital securities</link:label>
    <link:label id="lab_ago_FairValueGainLossOnCommittedCapitalSecurities_label_en-US" xlink:label="lab_ago_FairValueGainLossOnCommittedCapitalSecurities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Gain (Loss) On Committed Capital Securities</link:label>
    <link:label id="lab_ago_FairValueGainLossOnCommittedCapitalSecurities_documentation_en-US" xlink:label="lab_ago_FairValueGainLossOnCommittedCapitalSecurities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fair Value, Gain (Loss) On Committed Capital Securities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FairValueGainLossOnCommittedCapitalSecurities" xlink:href="ago-20240630.xsd#ago_FairValueGainLossOnCommittedCapitalSecurities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FairValueGainLossOnCommittedCapitalSecurities" xlink:to="lab_ago_FairValueGainLossOnCommittedCapitalSecurities" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_AssuredGuarantyFinancialProductsIncMember_964420eb-10b5-4b74-938d-5e9589d166ed_terseLabel_en-US" xlink:label="lab_ago_AssuredGuarantyFinancialProductsIncMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">AG Financial Products Inc.</link:label>
    <link:label id="lab_ago_AssuredGuarantyFinancialProductsIncMember_label_en-US" xlink:label="lab_ago_AssuredGuarantyFinancialProductsIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assured Guaranty Financial Products Inc [Member]</link:label>
    <link:label id="lab_ago_AssuredGuarantyFinancialProductsIncMember_documentation_en-US" xlink:label="lab_ago_AssuredGuarantyFinancialProductsIncMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Assured Guaranty Financial Products Inc [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_AssuredGuarantyFinancialProductsIncMember" xlink:href="ago-20240630.xsd#ago_AssuredGuarantyFinancialProductsIncMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_AssuredGuarantyFinancialProductsIncMember" xlink:to="lab_ago_AssuredGuarantyFinancialProductsIncMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis_63318e0b-798d-4f06-b9b8-ee46a1bb87ba_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Due after 10&#160;years</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Amortized Cost</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ConsolidationPolicyTextBlock_eaf8d768-286e-4d28-951a-07bc80adff49_terseLabel_en-US" xlink:label="lab_us-gaap_ConsolidationPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Consolidation</link:label>
    <link:label id="lab_us-gaap_ConsolidationPolicyTextBlock_label_en-US" xlink:label="lab_us-gaap_ConsolidationPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Consolidation, Policy [Policy Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConsolidationPolicyTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConsolidationPolicyTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConsolidationPolicyTextBlock" xlink:to="lab_us-gaap_ConsolidationPolicyTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FairValueOptionLoansHeldasLiabilitiesAggregateDifferenceWithoutRecourse_40f99056-11f4-4e64-b289-a8ac5a96f74a_terseLabel_en-US" xlink:label="lab_ago_FairValueOptionLoansHeldasLiabilitiesAggregateDifferenceWithoutRecourse" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">FG VIEs&#8217; liabilities without recourse</link:label>
    <link:label id="lab_ago_FairValueOptionLoansHeldasLiabilitiesAggregateDifferenceWithoutRecourse_label_en-US" xlink:label="lab_ago_FairValueOptionLoansHeldasLiabilitiesAggregateDifferenceWithoutRecourse" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Option, Loans Held as Liabilities, Aggregate Difference, Without Recourse</link:label>
    <link:label id="lab_ago_FairValueOptionLoansHeldasLiabilitiesAggregateDifferenceWithoutRecourse_documentation_en-US" xlink:label="lab_ago_FairValueOptionLoansHeldasLiabilitiesAggregateDifferenceWithoutRecourse" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fair Value, Option, Loans Held as Liabilities, Aggregate Difference, Without Recourse</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FairValueOptionLoansHeldasLiabilitiesAggregateDifferenceWithoutRecourse" xlink:href="ago-20240630.xsd#ago_FairValueOptionLoansHeldasLiabilitiesAggregateDifferenceWithoutRecourse"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FairValueOptionLoansHeldasLiabilitiesAggregateDifferenceWithoutRecourse" xlink:to="lab_ago_FairValueOptionLoansHeldasLiabilitiesAggregateDifferenceWithoutRecourse" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_RestatementDateAxis_terseLabel_en-US" xlink:label="lab_ecd_RestatementDateAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restatement Determination Date:</link:label>
    <link:label id="lab_ecd_RestatementDateAxis_label_en-US" xlink:label="lab_ecd_RestatementDateAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restatement Determination Date [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_RestatementDateAxis" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_RestatementDateAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_RestatementDateAxis" xlink:to="lab_ecd_RestatementDateAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_Security12bTitle_5f3b396d-2607-4d4a-984a-34459643dc86_terseLabel_en-US" xlink:label="lab_dei_Security12bTitle" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Title of 12(b) Security</link:label>
    <link:label id="lab_dei_Security12bTitle_label_en-US" xlink:label="lab_dei_Security12bTitle" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Title of 12(b) Security</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_Security12bTitle"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_Security12bTitle" xlink:to="lab_dei_Security12bTitle" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ConcentrationRiskByTypeAxis_a9a407b1-83be-4eec-9e21-b0d987cc340b_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByTypeAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Concentration Risk Type [Axis]</link:label>
    <link:label id="lab_us-gaap_ConcentrationRiskByTypeAxis_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Concentration Risk Type [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskByTypeAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis" xlink:to="lab_us-gaap_ConcentrationRiskByTypeAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_CommonStockValue_7336f44a-8ff9-4a7f-8961-82d8247a1250_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common shares ($0.01 par value, 500,000,000 shares authorized; 53,185,707 and 56,217,305 shares issued and outstanding)</link:label>
    <link:label id="lab_us-gaap_CommonStockValue_label_en-US" xlink:label="lab_us-gaap_CommonStockValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Value, Issued</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockValue"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockValue" xlink:to="lab_us-gaap_CommonStockValue" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_LossRecoveryAssumption_08c17de7-afff-4712-9460-8a2b7adceadc_terseLabel_en-US" xlink:label="lab_ago_LossRecoveryAssumption" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss recovery assumption (as a percent)</link:label>
    <link:label id="lab_ago_LossRecoveryAssumption_label_en-US" xlink:label="lab_ago_LossRecoveryAssumption" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Recovery Assumption</link:label>
    <link:label id="lab_ago_LossRecoveryAssumption_documentation_en-US" xlink:label="lab_ago_LossRecoveryAssumption" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the percentage of assumed lifetime losses on a pool of insured obligations that is anticipated to be recovered.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_LossRecoveryAssumption" xlink:href="ago-20240630.xsd#ago_LossRecoveryAssumption"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_LossRecoveryAssumption" xlink:to="lab_ago_LossRecoveryAssumption" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ProceedsFromSaleOfOtherAssetsInvestingActivities_5f98b80b-4add-479a-a8af-dcdc78bb1cc0_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfOtherAssetsInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sales of and return of capital from other invested assets</link:label>
    <link:label id="lab_us-gaap_ProceedsFromSaleOfOtherAssetsInvestingActivities_label_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfOtherAssetsInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Sale of Other Assets, Investing Activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfOtherAssetsInvestingActivities" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromSaleOfOtherAssetsInvestingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromSaleOfOtherAssetsInvestingActivities" xlink:to="lab_us-gaap_ProceedsFromSaleOfOtherAssetsInvestingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis_45c9bd94-7da3-47eb-bbee-c6598a67b6ee_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Due after one year through five years</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Amortized Cost</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_StructuredFinanceMember_e1a49cfd-15b4-445f-8281-4b65cd705001_terseLabel_en-US" xlink:label="lab_us-gaap_StructuredFinanceMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Structured finance</link:label>
    <link:label id="lab_us-gaap_StructuredFinanceMember_label_en-US" xlink:label="lab_us-gaap_StructuredFinanceMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Structured Finance [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StructuredFinanceMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StructuredFinanceMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StructuredFinanceMember" xlink:to="lab_us-gaap_StructuredFinanceMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_LehmanBrothersInternationalEuropeMember_dd4b8444-1927-4a24-bc9a-ff4908db58fb_terseLabel_en-US" xlink:label="lab_ago_LehmanBrothersInternationalEuropeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lehman Brothers International (Europe)</link:label>
    <link:label id="lab_ago_LehmanBrothersInternationalEuropeMember_label_en-US" xlink:label="lab_ago_LehmanBrothersInternationalEuropeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lehman Brothers International (Europe) [Member]</link:label>
    <link:label id="lab_ago_LehmanBrothersInternationalEuropeMember_documentation_en-US" xlink:label="lab_ago_LehmanBrothersInternationalEuropeMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lehman Brothers International (Europe) [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_LehmanBrothersInternationalEuropeMember" xlink:href="ago-20240630.xsd#ago_LehmanBrothersInternationalEuropeMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_LehmanBrothersInternationalEuropeMember" xlink:to="lab_ago_LehmanBrothersInternationalEuropeMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InvestmentsAuthorizedAmountToInvest_0bce69d8-c9d3-4b53-a901-746366d51b51_terseLabel_en-US" xlink:label="lab_ago_InvestmentsAuthorizedAmountToInvest" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investments, authorized amount to invest</link:label>
    <link:label id="lab_ago_InvestmentsAuthorizedAmountToInvest_label_en-US" xlink:label="lab_ago_InvestmentsAuthorizedAmountToInvest" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investments, Authorized Amount To Invest</link:label>
    <link:label id="lab_ago_InvestmentsAuthorizedAmountToInvest_documentation_en-US" xlink:label="lab_ago_InvestmentsAuthorizedAmountToInvest" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Investments, Authorized Amount To Invest</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InvestmentsAuthorizedAmountToInvest" xlink:href="ago-20240630.xsd#ago_InvestmentsAuthorizedAmountToInvest"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InvestmentsAuthorizedAmountToInvest" xlink:to="lab_ago_InvestmentsAuthorizedAmountToInvest" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_9e899479-6721-499f-853a-cecaa2b64fa2_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value by Liability Class [Domain]</link:label>
    <link:label id="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_label_en-US" xlink:label="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value by Liability Class [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" xlink:to="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_848c4850-8668-40dd-a042-beb5de33b11d_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash flows from financing activities:</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Financing Activities [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract"/>
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    <link:label id="lab_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_c928b7b1-83da-480e-b872-6f4dc48a4ca9_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">State taxes</link:label>
    <link:label id="lab_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_label_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes" xlink:to="lab_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_CreditDerivativeQuotedPrice_1cb57c49-28b8-4ea7-b080-7a7ba74db274_terseLabel_en-US" xlink:label="lab_ago_CreditDerivativeQuotedPrice" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Quoted price of CDS contract (as a percent)</link:label>
    <link:label id="lab_ago_CreditDerivativeQuotedPrice_label_en-US" xlink:label="lab_ago_CreditDerivativeQuotedPrice" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Credit Derivative Quoted Price</link:label>
    <link:label id="lab_ago_CreditDerivativeQuotedPrice_documentation_en-US" xlink:label="lab_ago_CreditDerivativeQuotedPrice" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the quoted price of credit derivative contracts.</link:label>
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    <link:label id="lab_us-gaap_ValuationTechniqueDomain_ecd228cb-04aa-40a6-b4c4-9e2f614990f4_terseLabel_en-US" xlink:label="lab_us-gaap_ValuationTechniqueDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Valuation Approach and Technique [Domain]</link:label>
    <link:label id="lab_us-gaap_ValuationTechniqueDomain_label_en-US" xlink:label="lab_us-gaap_ValuationTechniqueDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Valuation Approach and Technique [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ValuationTechniqueDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ValuationTechniqueDomain" xlink:to="lab_us-gaap_ValuationTechniqueDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_EarningsPerShareBasic_39613d4b-dbee-4af1-ace4-7e1f90ba4913_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasic" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Basic (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_EarningsPerShareBasic_1f01760e-3aa3-4aff-a01b-92beaf7914ed_verboseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasic" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Basic EPS (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_EarningsPerShareBasic_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasic" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings Per Share, Basic</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareBasic" xlink:to="lab_us-gaap_EarningsPerShareBasic" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_VariableInterestEntityNumberofEntitiesConsolidated_fc65bcf5-8a97-48e0-9eca-5d15b5ee5f50_terseLabel_en-US" xlink:label="lab_ago_VariableInterestEntityNumberofEntitiesConsolidated" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total number of entities consolidated</link:label>
    <link:label id="lab_ago_VariableInterestEntityNumberofEntitiesConsolidated_label_en-US" xlink:label="lab_ago_VariableInterestEntityNumberofEntitiesConsolidated" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable Interest Entity, Number of Entities Consolidated</link:label>
    <link:label id="lab_ago_VariableInterestEntityNumberofEntitiesConsolidated_documentation_en-US" xlink:label="lab_ago_VariableInterestEntityNumberofEntitiesConsolidated" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Variable Interest Entity, Number of Entities Consolidated</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_VariableInterestEntityNumberofEntitiesConsolidated" xlink:href="ago-20240630.xsd#ago_VariableInterestEntityNumberofEntitiesConsolidated"/>
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    <link:label id="lab_ecd_AwardTmgMnpiDiscTextBlock_terseLabel_en-US" xlink:label="lab_ecd_AwardTmgMnpiDiscTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Award Timing MNPI Disclosure</link:label>
    <link:label id="lab_ecd_AwardTmgMnpiDiscTextBlock_label_en-US" xlink:label="lab_ecd_AwardTmgMnpiDiscTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Award Timing MNPI Disclosure [Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AwardTmgMnpiDiscTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_AwardTmgMnpiDiscTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AwardTmgMnpiDiscTextBlock" xlink:to="lab_ecd_AwardTmgMnpiDiscTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_OtherStructuredFinanceMember_82926600-1c87-448a-84d5-07e1d5d16576_terseLabel_en-US" xlink:label="lab_ago_OtherStructuredFinanceMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other structured finance</link:label>
    <link:label id="lab_ago_OtherStructuredFinanceMember_label_en-US" xlink:label="lab_ago_OtherStructuredFinanceMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Structured Finance [Member]</link:label>
    <link:label id="lab_ago_OtherStructuredFinanceMember_documentation_en-US" xlink:label="lab_ago_OtherStructuredFinanceMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents structured finance obligations not separately disclosed.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_OtherStructuredFinanceMember" xlink:href="ago-20240630.xsd#ago_OtherStructuredFinanceMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_OtherStructuredFinanceMember" xlink:to="lab_ago_OtherStructuredFinanceMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsConditionalPrepaymentRateFinalRate_4bcf5a3a-0e16-436d-a4b7-6411565f4ce0_verboseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsConditionalPrepaymentRateFinalRate" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Final CPR</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsConditionalPrepaymentRateFinalRate_label_en-US" xlink:label="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsConditionalPrepaymentRateFinalRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Projected Loss Assumptions, Conditional Prepayment Rate, Final Rate</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsConditionalPrepaymentRateFinalRate_documentation_en-US" xlink:label="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsConditionalPrepaymentRateFinalRate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Projected Loss Assumptions, Conditional Prepayment Rate, Final Rate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuredFinancialObligationsProjectedLossAssumptionsConditionalPrepaymentRateFinalRate" xlink:href="ago-20240630.xsd#ago_InsuredFinancialObligationsProjectedLossAssumptionsConditionalPrepaymentRateFinalRate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InsuredFinancialObligationsProjectedLossAssumptionsConditionalPrepaymentRateFinalRate" xlink:to="lab_ago_InsuredFinancialObligationsProjectedLossAssumptionsConditionalPrepaymentRateFinalRate" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsBelowInvestmentGradeTableTextBlock_621ec271-faf4-4b05-be59-480fae97032a_terseLabel_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsBelowInvestmentGradeTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of BIG Net Par Outstanding and Number of Risks</link:label>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsBelowInvestmentGradeTableTextBlock_label_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsBelowInvestmentGradeTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule Of Insured Financial Obligations, Below Investment Grade [Table Text Block]</link:label>
    <link:label id="lab_ago_ScheduleOfInsuredFinancialObligationsBelowInvestmentGradeTableTextBlock_documentation_en-US" xlink:label="lab_ago_ScheduleOfInsuredFinancialObligationsBelowInvestmentGradeTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule Of Insured Financial Obligations, Below Investment Grade [Table Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ScheduleOfInsuredFinancialObligationsBelowInvestmentGradeTableTextBlock" xlink:href="ago-20240630.xsd#ago_ScheduleOfInsuredFinancialObligationsBelowInvestmentGradeTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ScheduleOfInsuredFinancialObligationsBelowInvestmentGradeTableTextBlock" xlink:to="lab_ago_ScheduleOfInsuredFinancialObligationsBelowInvestmentGradeTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_AggtPnsnAdjsSvcCstMember_terseLabel_en-US" xlink:label="lab_ecd_AggtPnsnAdjsSvcCstMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Aggregate Pension Adjustments Service Cost</link:label>
    <link:label id="lab_ecd_AggtPnsnAdjsSvcCstMember_label_en-US" xlink:label="lab_ecd_AggtPnsnAdjsSvcCstMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Aggregate Pension Adjustments Service Cost [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AggtPnsnAdjsSvcCstMember" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_AggtPnsnAdjsSvcCstMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AggtPnsnAdjsSvcCstMember" xlink:to="lab_ecd_AggtPnsnAdjsSvcCstMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_235e729a-6b19-4c2b-aef5-49091ea71593_terseLabel_en-US" xlink:label="lab_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disposal Group, Held-for-sale, Not Discontinued Operations</link:label>
    <link:label id="lab_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_label_en-US" xlink:label="lab_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disposal Group, Held-for-Sale, Not Discontinued Operations [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember" xlink:to="lab_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsClaimLiabilityTable_9fc9e8a9-ad87-47f9-8ad3-d8bfa094eead_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsClaimLiabilityTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations with Credit Deterioration [Table]</link:label>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsClaimLiabilityTable_label_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsClaimLiabilityTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Claim Liability [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialGuaranteeInsuranceContractsClaimLiabilityTable" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancialGuaranteeInsuranceContractsClaimLiabilityTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancialGuaranteeInsuranceContractsClaimLiabilityTable" xlink:to="lab_us-gaap_FinancialGuaranteeInsuranceContractsClaimLiabilityTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_GuarantorObligationsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidAfterRecoveriesforRepresentationsandWarranties_406ef366-34a8-4e84-8b07-ca80081f82ad_negatedTerseLabel_en-US" xlink:label="lab_ago_GuarantorObligationsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidAfterRecoveriesforRepresentationsandWarranties" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Net (paid) recovered losses</link:label>
    <link:label id="lab_ago_GuarantorObligationsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidAfterRecoveriesforRepresentationsandWarranties_label_en-US" xlink:label="lab_ago_GuarantorObligationsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidAfterRecoveriesforRepresentationsandWarranties" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Liability For Unpaid Claims And Claims Adjustment Expense, Claims Paid After Recoveries for Representations and Warranties</link:label>
    <link:label id="lab_ago_GuarantorObligationsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidAfterRecoveriesforRepresentationsandWarranties_documentation_en-US" xlink:label="lab_ago_GuarantorObligationsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidAfterRecoveriesforRepresentationsandWarranties" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Liability For Unpaid Claims And Claims Adjustment Expense, Claims Paid After Recoveries for Representations and Warranties</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_GuarantorObligationsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidAfterRecoveriesforRepresentationsandWarranties" xlink:href="ago-20240630.xsd#ago_GuarantorObligationsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidAfterRecoveriesforRepresentationsandWarranties"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_GuarantorObligationsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidAfterRecoveriesforRepresentationsandWarranties" xlink:to="lab_ago_GuarantorObligationsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidAfterRecoveriesforRepresentationsandWarranties" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance_8ce794e5-61b8-463a-8693-54d20c1c4912_terseLabel_en-US" xlink:label="lab_us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contributions</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance" xlink:to="lab_us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ScheduleofInsuredFinancialObligationsLineItems_4f673c6f-2e4e-4e67-95c3-9b8284507f78_terseLabel_en-US" xlink:label="lab_ago_ScheduleofInsuredFinancialObligationsLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations [Line Items]</link:label>
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    <link:label id="lab_ago_ScheduleofInsuredFinancialObligationsLineItems_documentation_en-US" xlink:label="lab_ago_ScheduleofInsuredFinancialObligationsLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">[Line Items] for Schedule of Insured Financial Obligations [Table]</link:label>
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    <link:label id="lab_us-gaap_FairValueAssetLiabilityRecurringBasisStillHeldUnrealizedGainLoss_b99d57e2-775d-4df2-a26a-40d9b01685d5_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueAssetLiabilityRecurringBasisStillHeldUnrealizedGainLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair value gains (losses) on trading securities still held</link:label>
    <link:label id="lab_us-gaap_FairValueAssetLiabilityRecurringBasisStillHeldUnrealizedGainLoss_label_en-US" xlink:label="lab_us-gaap_FairValueAssetLiabilityRecurringBasisStillHeldUnrealizedGainLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Asset (Liability), Recurring Basis, Still Held, Unrealized Gain (Loss)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetLiabilityRecurringBasisStillHeldUnrealizedGainLoss" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueAssetLiabilityRecurringBasisStillHeldUnrealizedGainLoss"/>
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    <link:label id="lab_us-gaap_USTreasuryAndGovernmentMember_d80f25a6-aaf2-4146-b363-236c8dc1a797_terseLabel_en-US" xlink:label="lab_us-gaap_USTreasuryAndGovernmentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">U.S. government and agencies</link:label>
    <link:label id="lab_us-gaap_USTreasuryAndGovernmentMember_label_en-US" xlink:label="lab_us-gaap_USTreasuryAndGovernmentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">US Treasury and Government [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasuryAndGovernmentMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_USTreasuryAndGovernmentMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_USTreasuryAndGovernmentMember" xlink:to="lab_us-gaap_USTreasuryAndGovernmentMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense_ad464db6-14a6-4428-92c2-419ade1b11ab_terseLabel_en-US" xlink:label="lab_us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expenses recognized</link:label>
    <link:label id="lab_us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense_label_en-US" xlink:label="lab_us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disposal Group, Including Discontinued Operation, Operating Expense</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense" xlink:to="lab_us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_VariableInterestEntityNumberofPoliciesthatContainProvisionsforConsolidation_37dac253-46b4-4804-8fd6-1903d88636c0_terseLabel_en-US" xlink:label="lab_ago_VariableInterestEntityNumberofPoliciesthatContainProvisionsforConsolidation" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of policies that contain provisions for consolidation</link:label>
    <link:label id="lab_ago_VariableInterestEntityNumberofPoliciesthatContainProvisionsforConsolidation_label_en-US" xlink:label="lab_ago_VariableInterestEntityNumberofPoliciesthatContainProvisionsforConsolidation" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable Interest Entity, Number of Policies that Contain Provisions for Consolidation</link:label>
    <link:label id="lab_ago_VariableInterestEntityNumberofPoliciesthatContainProvisionsforConsolidation_documentation_en-US" xlink:label="lab_ago_VariableInterestEntityNumberofPoliciesthatContainProvisionsforConsolidation" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Variable Interest Entity, Number of Policies that Contain Provisions for Consolidation</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_VariableInterestEntityNumberofPoliciesthatContainProvisionsforConsolidation" xlink:href="ago-20240630.xsd#ago_VariableInterestEntityNumberofPoliciesthatContainProvisionsforConsolidation"/>
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    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis_79d97069-b68e-469e-bc1f-ee20cac29a15_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Due after five years through 10&#160;years</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 5 through 10 Years, Amortized Cost</link:label>
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    <link:label id="lab_us-gaap_CreditDerivativesLineItems_34cd55ea-a712-421b-983d-7a5792c0841f_terseLabel_en-US" xlink:label="lab_us-gaap_CreditDerivativesLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Credit Derivatives</link:label>
    <link:label id="lab_us-gaap_CreditDerivativesLineItems_label_en-US" xlink:label="lab_us-gaap_CreditDerivativesLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Credit Derivatives [Line Items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditDerivativesLineItems" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CreditDerivativesLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CreditDerivativesLineItems" xlink:to="lab_us-gaap_CreditDerivativesLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_Revenues_b7b92a79-3b3b-4c8e-9fbc-eb3d86451eb6_totalLabel_en-US" xlink:label="lab_us-gaap_Revenues" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total revenues</link:label>
    <link:label id="lab_us-gaap_Revenues_bee9ce1f-b8e1-417a-95ca-2f5efcfee51b_terseLabel_en-US" xlink:label="lab_us-gaap_Revenues" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revenues</link:label>
    <link:label id="lab_us-gaap_Revenues_label_en-US" xlink:label="lab_us-gaap_Revenues" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenues</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Revenues"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Revenues" xlink:to="lab_us-gaap_Revenues" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRatePlateauRateProjectionPeriod_0a8b4996-b7c7-445d-9541-e4205fb5d17b_terseLabel_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRatePlateauRateProjectionPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Projected loss assumptions, CDR, plateau rate, projection period</link:label>
    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRatePlateauRateProjectionPeriod_label_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRatePlateauRateProjectionPeriod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Projected Loss Assumptions, Conditional Default Rate, Plateau Rate, Projection Period</link:label>
    <link:label id="lab_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRatePlateauRateProjectionPeriod_documentation_en-US" xlink:label="lab_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRatePlateauRateProjectionPeriod" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the period over which the application of the constant conditional default rate would produce approximately the amount of defaults calculated for each delinquency category of insured financial obligations.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRatePlateauRateProjectionPeriod" xlink:href="ago-20240630.xsd#ago_GuarantorObligationsProjectedLossAssumptionsConditionalDefaultRatePlateauRateProjectionPeriod"/>
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    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountRemainderOfFiscalYear_11165738-4990-4787-afb6-e35818119488_totalLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountRemainderOfFiscalYear" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Subtotal 2024</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountRemainderOfFiscalYear_label_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountRemainderOfFiscalYear" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Principal Amount, Remainder Of Fiscal Year</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountRemainderOfFiscalYear_documentation_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountRemainderOfFiscalYear" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maturities of Outstanding Principal Amount, Remainder Of Fiscal Year</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountRemainderOfFiscalYear" xlink:href="ago-20240630.xsd#ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountRemainderOfFiscalYear"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountRemainderOfFiscalYear" xlink:to="lab_ago_InsuredFinancialObligationsMaturitiesOfOutstandingPrincipalAmountRemainderOfFiscalYear" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityAddressCityOrTown_066c2567-e51b-44b2-bf8e-1cf4bf2c7b02_terseLabel_en-US" xlink:label="lab_dei_EntityAddressCityOrTown" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Address, City or Town</link:label>
    <link:label id="lab_dei_EntityAddressCityOrTown_label_en-US" xlink:label="lab_dei_EntityAddressCityOrTown" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Address, City or Town</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityAddressCityOrTown"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityAddressCityOrTown" xlink:to="lab_dei_EntityAddressCityOrTown" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ScheduleofFinancialGuarantyObligationsbyInternalRatingTableTextBlock_f48fa034-9d52-4c56-9bc4-264dbe10e942_terseLabel_en-US" xlink:label="lab_ago_ScheduleofFinancialGuarantyObligationsbyInternalRatingTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial Guaranty Portfolio by Internal Rating</link:label>
    <link:label id="lab_ago_ScheduleofFinancialGuarantyObligationsbyInternalRatingTableTextBlock_label_en-US" xlink:label="lab_ago_ScheduleofFinancialGuarantyObligationsbyInternalRatingTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Financial Guaranty Obligations by Internal Rating [Table Text Block]</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ago_ScheduleofFinancialGuarantyObligationsbyInternalRatingTableTextBlock" xlink:href="ago-20240630.xsd#ago_ScheduleofFinancialGuarantyObligationsbyInternalRatingTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ScheduleofFinancialGuarantyObligationsbyInternalRatingTableTextBlock" xlink:to="lab_ago_ScheduleofFinancialGuarantyObligationsbyInternalRatingTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationStatementOfFinancialPositionUnearnedPremiumRevenue_8e98709c-3cdc-42f9-8d34-14c5102f1d84_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationStatementOfFinancialPositionUnearnedPremiumRevenue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gross</link:label>
    <link:label id="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationStatementOfFinancialPositionUnearnedPremiumRevenue_label_en-US" xlink:label="lab_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationStatementOfFinancialPositionUnearnedPremiumRevenue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Insured Financial Obligations with Credit Deterioration, Statement of Financial Position, Unearned Premium Revenue</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationStatementOfFinancialPositionUnearnedPremiumRevenue" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationStatementOfFinancialPositionUnearnedPremiumRevenue"/>
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    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumsReceivableAdjustmentAbstract_8a72018c-6eac-417a-9b65-fdc365cc4961_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumsReceivableAdjustmentAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Adjustments:</link:label>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumsReceivableAdjustmentAbstract_label_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumsReceivableAdjustmentAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contracts, Premiums Receivable, Adjustment [Abstract]</link:label>
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    <link:label id="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisChangeInUnrealizedGainLoss_f2890333-7b65-4be6-a0cf-3d8f77d2e9f9_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisChangeInUnrealizedGainLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Change in unrealized gains/(losses) included in earnings related to financial instruments</link:label>
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    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThanTwoAndWithinThreeYearsFromBalanceSheetDate_a52b22d0-85d3-440e-be0a-388f13bf5722_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThanTwoAndWithinThreeYearsFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2026</link:label>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThanTwoAndWithinThreeYearsFromBalanceSheetDate_label_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThanTwoAndWithinThreeYearsFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contract, Premium Receivable, to be Collected, Year Three</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThanTwoAndWithinThreeYearsFromBalanceSheetDate" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThanTwoAndWithinThreeYearsFromBalanceSheetDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThanTwoAndWithinThreeYearsFromBalanceSheetDate" xlink:to="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThanTwoAndWithinThreeYearsFromBalanceSheetDate" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_cfdf87f0-d691-4591-a660-de52f2f67cff_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investments, Debt and Equity Securities [Abstract]</link:label>
    <link:label id="lab_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_label_en-US" xlink:label="lab_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investments, Debt and Equity Securities [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract" xlink:to="lab_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_UnderlyingAssetClassDomain_bcab2745-33d3-469e-a368-d1109eedeeac_terseLabel_en-US" xlink:label="lab_us-gaap_UnderlyingAssetClassDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Underlying Asset Class [Domain]</link:label>
    <link:label id="lab_us-gaap_UnderlyingAssetClassDomain_label_en-US" xlink:label="lab_us-gaap_UnderlyingAssetClassDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Underlying Asset Class [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnderlyingAssetClassDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_UnderlyingAssetClassDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UnderlyingAssetClassDomain" xlink:to="lab_us-gaap_UnderlyingAssetClassDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_LossContingenciesTable_34c7ee40-fcc2-4164-acea-08a01f344fdc_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingenciesTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss Contingencies [Table]</link:label>
    <link:label id="lab_us-gaap_LossContingenciesTable_label_en-US" xlink:label="lab_us-gaap_LossContingenciesTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Contingencies [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesTable" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LossContingenciesTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingenciesTable" xlink:to="lab_us-gaap_LossContingenciesTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_DvddsOrOthrErngsPdOnEqtyAwrdsNtOthrwsRflctdInTtlCompForCvrdYrMember_terseLabel_en-US" xlink:label="lab_ecd_DvddsOrOthrErngsPdOnEqtyAwrdsNtOthrwsRflctdInTtlCompForCvrdYrMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year</link:label>
    <link:label id="lab_ecd_DvddsOrOthrErngsPdOnEqtyAwrdsNtOthrwsRflctdInTtlCompForCvrdYrMember_label_en-US" xlink:label="lab_ecd_DvddsOrOthrErngsPdOnEqtyAwrdsNtOthrwsRflctdInTtlCompForCvrdYrMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_DvddsOrOthrErngsPdOnEqtyAwrdsNtOthrwsRflctdInTtlCompForCvrdYrMember" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_DvddsOrOthrErngsPdOnEqtyAwrdsNtOthrwsRflctdInTtlCompForCvrdYrMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_DvddsOrOthrErngsPdOnEqtyAwrdsNtOthrwsRflctdInTtlCompForCvrdYrMember" xlink:to="lab_ecd_DvddsOrOthrErngsPdOnEqtyAwrdsNtOthrwsRflctdInTtlCompForCvrdYrMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ForeignCountryMember_37a682f6-8463-4c76-8b97-9f2fc0487aa9_terseLabel_en-US" xlink:label="lab_us-gaap_ForeignCountryMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Foreign Tax Authority</link:label>
    <link:label id="lab_us-gaap_ForeignCountryMember_label_en-US" xlink:label="lab_us-gaap_ForeignCountryMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Foreign Tax Jurisdiction [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCountryMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ForeignCountryMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ForeignCountryMember" xlink:to="lab_us-gaap_ForeignCountryMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_RecoveryBondsMember_fd9d57c3-64a9-4d73-9fb3-572d497176c6_terseLabel_en-US" xlink:label="lab_ago_RecoveryBondsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Puerto Rico, New Recovery Bonds</link:label>
    <link:label id="lab_ago_RecoveryBondsMember_label_en-US" xlink:label="lab_ago_RecoveryBondsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Recovery Bonds [Member]</link:label>
    <link:label id="lab_ago_RecoveryBondsMember_documentation_en-US" xlink:label="lab_ago_RecoveryBondsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Recovery Bonds</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_RecoveryBondsMember" xlink:href="ago-20240630.xsd#ago_RecoveryBondsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_RecoveryBondsMember" xlink:to="lab_ago_RecoveryBondsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_LiabilitiesFairValueDisclosureAbstract_c0dbe0fa-26a0-44ee-9390-eda14c38c79e_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesFairValueDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Liabilities:</link:label>
    <link:label id="lab_us-gaap_LiabilitiesFairValueDisclosureAbstract_label_en-US" xlink:label="lab_us-gaap_LiabilitiesFairValueDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities, Fair Value Disclosure [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesFairValueDisclosureAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract" xlink:to="lab_us-gaap_LiabilitiesFairValueDisclosureAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_InsuredFinancialObligationsMaximumPeriodofLiquidityClaims_1d2e2691-8989-4d20-ad82-fbc743d21ecb_terseLabel_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaximumPeriodofLiquidityClaims" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maximum period of liquidity claims (in years)</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaximumPeriodofLiquidityClaims_label_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaximumPeriodofLiquidityClaims" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insured Financial Obligations, Maximum Period of Liquidity Claims</link:label>
    <link:label id="lab_ago_InsuredFinancialObligationsMaximumPeriodofLiquidityClaims_documentation_en-US" xlink:label="lab_ago_InsuredFinancialObligationsMaximumPeriodofLiquidityClaims" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the period within which the entity expects the reimbursement of the liquidity claims.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuredFinancialObligationsMaximumPeriodofLiquidityClaims" xlink:href="ago-20240630.xsd#ago_InsuredFinancialObligationsMaximumPeriodofLiquidityClaims"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_InsuredFinancialObligationsMaximumPeriodofLiquidityClaims" xlink:to="lab_ago_InsuredFinancialObligationsMaximumPeriodofLiquidityClaims" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_OperatingSegmentsExcludingIntersegmentEliminationMember_4b158810-934d-4acc-9e6e-44eb0ece1897_terseLabel_en-US" xlink:label="lab_ago_OperatingSegmentsExcludingIntersegmentEliminationMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating Segments Excluding Intersegment Elimination</link:label>
    <link:label id="lab_ago_OperatingSegmentsExcludingIntersegmentEliminationMember_label_en-US" xlink:label="lab_ago_OperatingSegmentsExcludingIntersegmentEliminationMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Segments Excluding Intersegment Elimination [Member]</link:label>
    <link:label id="lab_ago_OperatingSegmentsExcludingIntersegmentEliminationMember_documentation_en-US" xlink:label="lab_ago_OperatingSegmentsExcludingIntersegmentEliminationMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Operating Segments Excluding Intersegment Elimination</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_OperatingSegmentsExcludingIntersegmentEliminationMember" xlink:href="ago-20240630.xsd#ago_OperatingSegmentsExcludingIntersegmentEliminationMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_OperatingSegmentsExcludingIntersegmentEliminationMember" xlink:to="lab_ago_OperatingSegmentsExcludingIntersegmentEliminationMember" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_DocumentFiscalYearFocus_84f8f715-c1a3-4074-8a19-d0ff89bd47be_terseLabel_en-US" xlink:label="lab_dei_DocumentFiscalYearFocus" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Fiscal Year Focus</link:label>
    <link:label id="lab_dei_DocumentFiscalYearFocus_label_en-US" xlink:label="lab_dei_DocumentFiscalYearFocus" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Fiscal Year Focus</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalYearFocus" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_DocumentFiscalYearFocus"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentFiscalYearFocus" xlink:to="lab_dei_DocumentFiscalYearFocus" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_DistributionsToNoncontrollingInterestsFromInvestmentVehicles_7925bd30-93ec-4d89-a925-0ce71f50c2b8_negatedTerseLabel_en-US" xlink:label="lab_ago_DistributionsToNoncontrollingInterestsFromInvestmentVehicles" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Distributions to noncontrolling interests from consolidated investment vehicles</link:label>
    <link:label id="lab_ago_DistributionsToNoncontrollingInterestsFromInvestmentVehicles_label_en-US" xlink:label="lab_ago_DistributionsToNoncontrollingInterestsFromInvestmentVehicles" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Distributions To Noncontrolling Interests From Investment Vehicles</link:label>
    <link:label id="lab_ago_DistributionsToNoncontrollingInterestsFromInvestmentVehicles_documentation_en-US" xlink:label="lab_ago_DistributionsToNoncontrollingInterestsFromInvestmentVehicles" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Distributions To Noncontrolling Interests From Investment Vehicles</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_DistributionsToNoncontrollingInterestsFromInvestmentVehicles" xlink:href="ago-20240630.xsd#ago_DistributionsToNoncontrollingInterestsFromInvestmentVehicles"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_DistributionsToNoncontrollingInterestsFromInvestmentVehicles" xlink:to="lab_ago_DistributionsToNoncontrollingInterestsFromInvestmentVehicles" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_FinancialGuaranteeAccountedforasCreditDerivativesMember_6afee257-0da6-4fa8-8f56-65f3147e46cd_terseLabel_en-US" xlink:label="lab_ago_FinancialGuaranteeAccountedforasCreditDerivativesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Credit derivatives</link:label>
    <link:label id="lab_ago_FinancialGuaranteeAccountedforasCreditDerivativesMember_label_en-US" xlink:label="lab_ago_FinancialGuaranteeAccountedforasCreditDerivativesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Accounted for as Credit Derivatives [Member]</link:label>
    <link:label id="lab_ago_FinancialGuaranteeAccountedforasCreditDerivativesMember_documentation_en-US" xlink:label="lab_ago_FinancialGuaranteeAccountedforasCreditDerivativesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financial Guarantee Accounted for as Credit Derivatives [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_FinancialGuaranteeAccountedforasCreditDerivativesMember" xlink:href="ago-20240630.xsd#ago_FinancialGuaranteeAccountedforasCreditDerivativesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_FinancialGuaranteeAccountedforasCreditDerivativesMember" xlink:to="lab_ago_FinancialGuaranteeAccountedforasCreditDerivativesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_AssetsFairValueDisclosure_a0a2a13e-db32-4a28-89cc-18edeb4caeb9_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsFairValueDisclosure" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total assets carried at fair value</link:label>
    <link:label id="lab_us-gaap_AssetsFairValueDisclosure_3a6d9a08-1332-4037-b5a5-2d80a1c643a7_totalLabel_en-US" xlink:label="lab_us-gaap_AssetsFairValueDisclosure" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total assets carried at fair value</link:label>
    <link:label id="lab_us-gaap_AssetsFairValueDisclosure_label_en-US" xlink:label="lab_us-gaap_AssetsFairValueDisclosure" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets, Fair Value Disclosure</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsFairValueDisclosure" xlink:to="lab_us-gaap_AssetsFairValueDisclosure" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThanTwoAndWithinThreeYearsFromBalanceSheetDate_f30638ff-3d86-41c1-84a2-691d3a36e257_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThanTwoAndWithinThreeYearsFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2026</link:label>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThanTwoAndWithinThreeYearsFromBalanceSheetDate_label_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThanTwoAndWithinThreeYearsFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contract, Premium Revenue to be Recognized, Year Three</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThanTwoAndWithinThreeYearsFromBalanceSheetDate" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThanTwoAndWithinThreeYearsFromBalanceSheetDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThanTwoAndWithinThreeYearsFromBalanceSheetDate" xlink:to="lab_us-gaap_FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThanTwoAndWithinThreeYearsFromBalanceSheetDate" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_PuertoRicoHighwaysAuthorityMember_46711570-d63b-4ee9-9467-21297b6cc26a_terseLabel_en-US" xlink:label="lab_ago_PuertoRicoHighwaysAuthorityMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Puerto Rico Highways Authority</link:label>
    <link:label id="lab_ago_PuertoRicoHighwaysAuthorityMember_label_en-US" xlink:label="lab_ago_PuertoRicoHighwaysAuthorityMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Puerto Rico Highways Authority [Member]</link:label>
    <link:label id="lab_ago_PuertoRicoHighwaysAuthorityMember_documentation_en-US" xlink:label="lab_ago_PuertoRicoHighwaysAuthorityMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Puerto Rico Highways Authority [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_PuertoRicoHighwaysAuthorityMember" xlink:href="ago-20240630.xsd#ago_PuertoRicoHighwaysAuthorityMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_PuertoRicoHighwaysAuthorityMember" xlink:to="lab_ago_PuertoRicoHighwaysAuthorityMember" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_DocumentPeriodEndDate_c7e0e1a5-0dd9-429f-8ce0-b8f145b9e44b_terseLabel_en-US" xlink:label="lab_dei_DocumentPeriodEndDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Period End Date</link:label>
    <link:label id="lab_dei_DocumentPeriodEndDate_label_en-US" xlink:label="lab_dei_DocumentPeriodEndDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Period End Date</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_DocumentPeriodEndDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentPeriodEndDate" xlink:to="lab_dei_DocumentPeriodEndDate" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ReconcilingItemsAxis_fcd3eb26-2fe4-4eb8-a170-cc7d0e7069c6_terseLabel_en-US" xlink:label="lab_ago_ReconcilingItemsAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reconciling Items [Axis]</link:label>
    <link:label id="lab_ago_ReconcilingItemsAxis_label_en-US" xlink:label="lab_ago_ReconcilingItemsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reconciling Items [Axis]</link:label>
    <link:label id="lab_ago_ReconcilingItemsAxis_documentation_en-US" xlink:label="lab_ago_ReconcilingItemsAxis" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Reconciling Items</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ReconcilingItemsAxis" xlink:href="ago-20240630.xsd#ago_ReconcilingItemsAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ReconcilingItemsAxis" xlink:to="lab_ago_ReconcilingItemsAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_AssuredGuarantyMunicipalCorp.Member_fb8d8dce-1d04-4286-81ef-1d74c4d5f68b_terseLabel_en-US" xlink:label="lab_ago_AssuredGuarantyMunicipalCorp.Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Assured Guaranty Municipal Corp.</link:label>
    <link:label id="lab_ago_AssuredGuarantyMunicipalCorp.Member_label_en-US" xlink:label="lab_ago_AssuredGuarantyMunicipalCorp.Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assured Guaranty Municipal Corp. [Member]</link:label>
    <link:label id="lab_ago_AssuredGuarantyMunicipalCorp.Member_documentation_en-US" xlink:label="lab_ago_AssuredGuarantyMunicipalCorp.Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Assured Guaranty Municipal Corp.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_AssuredGuarantyMunicipalCorp.Member" xlink:href="ago-20240630.xsd#ago_AssuredGuarantyMunicipalCorp.Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_AssuredGuarantyMunicipalCorp.Member" xlink:to="lab_ago_AssuredGuarantyMunicipalCorp.Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_ReserveForLossesAndLossAdjustmentExpensesNetOfReinsuranceAndSalvageAndSubrogationRecoveries_6a0a6a2a-bdf3-4653-b0a6-42e0a214f87a_terseLabel_en-US" xlink:label="lab_ago_ReserveForLossesAndLossAdjustmentExpensesNetOfReinsuranceAndSalvageAndSubrogationRecoveries" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net Reserve (Recoverable)</link:label>
    <link:label id="lab_ago_ReserveForLossesAndLossAdjustmentExpensesNetOfReinsuranceAndSalvageAndSubrogationRecoveries_label_en-US" xlink:label="lab_ago_ReserveForLossesAndLossAdjustmentExpensesNetOfReinsuranceAndSalvageAndSubrogationRecoveries" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reserve for Losses and Loss Adjustment Expenses, Net of Reinsurance and Salvage and Subrogation Recoveries</link:label>
    <link:label id="lab_ago_ReserveForLossesAndLossAdjustmentExpensesNetOfReinsuranceAndSalvageAndSubrogationRecoveries_documentation_en-US" xlink:label="lab_ago_ReserveForLossesAndLossAdjustmentExpensesNetOfReinsuranceAndSalvageAndSubrogationRecoveries" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the reserve for losses and loss adjustment expenses, net of reinsurance recoverable on unpaid losses and net of salvage and subrogation recoverable.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_ReserveForLossesAndLossAdjustmentExpensesNetOfReinsuranceAndSalvageAndSubrogationRecoveries" xlink:href="ago-20240630.xsd#ago_ReserveForLossesAndLossAdjustmentExpensesNetOfReinsuranceAndSalvageAndSubrogationRecoveries"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_ReserveForLossesAndLossAdjustmentExpensesNetOfReinsuranceAndSalvageAndSubrogationRecoveries" xlink:to="lab_ago_ReserveForLossesAndLossAdjustmentExpensesNetOfReinsuranceAndSalvageAndSubrogationRecoveries" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesChangesInDiscountRates_0aeec27d-5fe0-4984-9f6b-1e4e6a6a51a4_terseLabel_en-US" xlink:label="lab_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesChangesInDiscountRates" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Changes in discount rates</link:label>
    <link:label id="lab_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesChangesInDiscountRates_label_en-US" xlink:label="lab_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesChangesInDiscountRates" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Net Expected Loss Development After Recoveries for Representations and Warranties, Changes In Discount Rates</link:label>
    <link:label id="lab_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesChangesInDiscountRates_documentation_en-US" xlink:label="lab_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesChangesInDiscountRates" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Net Expected Loss Development After Recoveries for Representations and Warranties, Changes In Discount Rates</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesChangesInDiscountRates" xlink:href="ago-20240630.xsd#ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesChangesInDiscountRates"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesChangesInDiscountRates" xlink:to="lab_ago_GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesChangesInDiscountRates" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueByAssetClassAxis_bb1ff387-3b6c-481b-bb73-ce6cea2c606a_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueByAssetClassAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Asset Class [Axis]</link:label>
    <link:label id="lab_us-gaap_FairValueByAssetClassAxis_label_en-US" xlink:label="lab_us-gaap_FairValueByAssetClassAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Asset Class [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByAssetClassAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueByAssetClassAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueByAssetClassAxis" xlink:to="lab_us-gaap_FairValueByAssetClassAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ecd_InsiderTradingArrLineItems_label_en-US" xlink:label="lab_ecd_InsiderTradingArrLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insider Trading Arrangements [Line Items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_InsiderTradingArrLineItems" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_InsiderTradingArrLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_InsiderTradingArrLineItems" xlink:to="lab_ecd_InsiderTradingArrLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss_027254ed-74ba-4c63-ac02-0a8fa91abe55_verboseLabel_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Amortized cost</link:label>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss_882771c1-0cb1-41ff-8ba2-f879eddff57c_terseLabel_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortized Cost</link:label>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss_label_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss" xlink:to="lab_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThan15AndWithin20YearsFromBalanceSheetDate_91c33dad-bd27-44ef-9ad9-ef72810f4166_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThan15AndWithin20YearsFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2039-2043</link:label>
    <link:label id="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThan15AndWithin20YearsFromBalanceSheetDate_label_en-US" xlink:label="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThan15AndWithin20YearsFromBalanceSheetDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantee Insurance Contract, Premium Receivable, to be Collected, after Year 15 Through 20</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThan15AndWithin20YearsFromBalanceSheetDate" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThan15AndWithin20YearsFromBalanceSheetDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThan15AndWithin20YearsFromBalanceSheetDate" xlink:to="lab_us-gaap_FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThan15AndWithin20YearsFromBalanceSheetDate" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_MaterialReconcilingItemsMember_e3146dff-8234-4308-9d7d-b103656202fa_terseLabel_en-US" xlink:label="lab_us-gaap_MaterialReconcilingItemsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reconciling items:</link:label>
    <link:label id="lab_us-gaap_MaterialReconcilingItemsMember_label_en-US" xlink:label="lab_us-gaap_MaterialReconcilingItemsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MaterialReconcilingItemsMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MaterialReconcilingItemsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MaterialReconcilingItemsMember" xlink:to="lab_us-gaap_MaterialReconcilingItemsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_DocumentTransitionReport_f94d95d3-8417-4ab0-85a1-a1aa5accd404_terseLabel_en-US" xlink:label="lab_dei_DocumentTransitionReport" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Transition Report</link:label>
    <link:label id="lab_dei_DocumentTransitionReport_label_en-US" xlink:label="lab_dei_DocumentTransitionReport" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Transition Report</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentTransitionReport" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_DocumentTransitionReport"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentTransitionReport" xlink:to="lab_dei_DocumentTransitionReport" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_LehmanBrothersInternationalEuropeVsAgFinancialProductsIncMember_f28ef367-f934-49d2-8861-0fd9013faa68_terseLabel_en-US" xlink:label="lab_ago_LehmanBrothersInternationalEuropeVsAgFinancialProductsIncMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">LBIE vs. AG Financial Products</link:label>
    <link:label id="lab_ago_LehmanBrothersInternationalEuropeVsAgFinancialProductsIncMember_label_en-US" xlink:label="lab_ago_LehmanBrothersInternationalEuropeVsAgFinancialProductsIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lehman Brothers International Europe Vs AG Financial Products Inc [Member]</link:label>
    <link:label id="lab_ago_LehmanBrothersInternationalEuropeVsAgFinancialProductsIncMember_documentation_en-US" xlink:label="lab_ago_LehmanBrothersInternationalEuropeVsAgFinancialProductsIncMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the information pertaining to the case filed by Lehman Brothers International (Europe) against AG Financial Products Inc., an affiliate of AGC.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_LehmanBrothersInternationalEuropeVsAgFinancialProductsIncMember" xlink:href="ago-20240630.xsd#ago_LehmanBrothersInternationalEuropeVsAgFinancialProductsIncMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_LehmanBrothersInternationalEuropeVsAgFinancialProductsIncMember" xlink:to="lab_ago_LehmanBrothersInternationalEuropeVsAgFinancialProductsIncMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_DiscontinuedOperationContinuingInvolvementTermToMakeNewInvestments_6ec3cb3d-9867-4672-8a0b-4fb6cece6b9e_terseLabel_en-US" xlink:label="lab_ago_DiscontinuedOperationContinuingInvolvementTermToMakeNewInvestments" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Term to make new investments</link:label>
    <link:label id="lab_ago_DiscontinuedOperationContinuingInvolvementTermToMakeNewInvestments_label_en-US" xlink:label="lab_ago_DiscontinuedOperationContinuingInvolvementTermToMakeNewInvestments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Discontinued Operation, Continuing Involvement, Term To Make New Investments</link:label>
    <link:label id="lab_ago_DiscontinuedOperationContinuingInvolvementTermToMakeNewInvestments_documentation_en-US" xlink:label="lab_ago_DiscontinuedOperationContinuingInvolvementTermToMakeNewInvestments" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Discontinued Operation, Continuing Involvement, Term To Make New Investments</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ago_DiscontinuedOperationContinuingInvolvementTermToMakeNewInvestments" xlink:href="ago-20240630.xsd#ago_DiscontinuedOperationContinuingInvolvementTermToMakeNewInvestments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ago_DiscontinuedOperationContinuingInvolvementTermToMakeNewInvestments" xlink:to="lab_ago_DiscontinuedOperationContinuingInvolvementTermToMakeNewInvestments" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_PaymentsToAcquireOtherInvestments_f1eeae73-8edd-4ac5-b8c3-894445c2dd3a_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireOtherInvestments" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Purchases of and contributions to other invested assets</link:label>
    <link:label id="lab_us-gaap_PaymentsToAcquireOtherInvestments_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireOtherInvestments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments to Acquire Other Investments</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireOtherInvestments" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsToAcquireOtherInvestments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquireOtherInvestments" xlink:to="lab_us-gaap_PaymentsToAcquireOtherInvestments" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_da888596-9a62-4863-a546-909e431c247f_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value, Recurring and Nonrecurring [Table]</link:label>
    <link:label id="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_label_en-US" xlink:label="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Recurring and Nonrecurring [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:to="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityCurrentReportingStatus_3b820aae-ac0f-40b1-a65d-f977c29738d8_terseLabel_en-US" xlink:label="lab_dei_EntityCurrentReportingStatus" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Current Reporting Status</link:label>
    <link:label id="lab_dei_EntityCurrentReportingStatus_label_en-US" xlink:label="lab_dei_EntityCurrentReportingStatus" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Current Reporting Status</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCurrentReportingStatus" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityCurrentReportingStatus"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityCurrentReportingStatus" xlink:to="lab_dei_EntityCurrentReportingStatus" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_RetainedEarningsMember_2b86dfe3-fe77-4964-b0dd-df99baaefb25_terseLabel_en-US" xlink:label="lab_us-gaap_RetainedEarningsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Retained Earnings</link:label>
    <link:label id="lab_us-gaap_RetainedEarningsMember_label_en-US" xlink:label="lab_us-gaap_RetainedEarningsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Retained Earnings [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RetainedEarningsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RetainedEarningsMember" xlink:to="lab_us-gaap_RetainedEarningsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_LitigationStatusDomain_99a4c2d4-a716-42b4-b56c-f133adabb593_terseLabel_en-US" xlink:label="lab_us-gaap_LitigationStatusDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Litigation Status [Domain]</link:label>
    <link:label id="lab_us-gaap_LitigationStatusDomain_label_en-US" xlink:label="lab_us-gaap_LitigationStatusDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Litigation Status [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LitigationStatusDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LitigationStatusDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LitigationStatusDomain" xlink:to="lab_us-gaap_LitigationStatusDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ago_GainContingencyAllegationsPaymentForTerminationofCreditDerivativeTransactionsOwedbyDefendanttoPlaintiffAsPerCalculationofPlaintiff_cd0b387a-2a30-4a37-a7d1-28ebf7f015fe_terseLabel_en-US" xlink:label="lab_ago_GainContingencyAllegationsPaymentForTerminationofCreditDerivativeTransactionsOwedbyDefendanttoPlaintiffAsPerCalculationofPlaintiff" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Termination payments which AG Financial Products owes to LBIE as per calculation of LBIE</link:label>
    <link:label id="lab_ago_GainContingencyAllegationsPaymentForTerminationofCreditDerivativeTransactionsOwedbyDefendanttoPlaintiffAsPerCalculationofPlaintiff_label_en-US" xlink:label="lab_ago_GainContingencyAllegationsPaymentForTerminationofCreditDerivativeTransactionsOwedbyDefendanttoPlaintiffAsPerCalculationofPlaintiff" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gain Contingency, Allegations, Payment For Termination of Credit Derivative Transactions Owed by Defendant to Plaintiff As Per Calculation of Plaintiff</link:label>
    <link:label id="lab_ago_GainContingencyAllegationsPaymentForTerminationofCreditDerivativeTransactionsOwedbyDefendanttoPlaintiffAsPerCalculationofPlaintiff_documentation_en-US" xlink:label="lab_ago_GainContingencyAllegationsPaymentForTerminationofCreditDerivativeTransactionsOwedbyDefendanttoPlaintiffAsPerCalculationofPlaintiff" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the amount of payment on the termination of credit derivatives transactions which the defendant owes to plaintiff as per the calculation of plaintiff.</link:label>
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    <link:label id="lab_us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt_ce10f10a-3b08-406e-894b-9261ccc54861_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Purchases</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt"/>
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    <link:loc xlink:type="locator" xlink:label="loc_ago_InsuredFinancialObligationsLossMitigationSecuritiesMember" xlink:href="ago-20240630.xsd#ago_InsuredFinancialObligationsLossMitigationSecuritiesMember"/>
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