XML 53 R42.htm IDEA: XBRL DOCUMENT
v3.22.2

Outstanding Exposure - Debt Service Outstanding (Details) - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Debt Service [Abstract] |  |
Gross | $ 363,037 | $ 367,770
Net | 362,832 | 367,360
Par Outstanding |  |
Gross | 232,994 | 236,765
Net | 232,812 | 236,392
Public finance |  |
Debt Service [Abstract] |  |
Gross | 353,431 | 357,694
Net | 353,251 | 357,314
Par Outstanding |  |
Gross | 224,252 | 227,507
Net | 224,095 | 227,164
Structured finance |  |
Debt Service [Abstract] |  |
Gross | 9,606 | 10,076
Net | 9,581 | 10,046
Par Outstanding |  |
Gross | 8,742 | 9,258
Net | $ 8,717 | $ 9,228

X
- Definition Debt Service + References No definition available. + Details
Name: | ago_DebtServiceAbstract
Namespace Prefix: | ago_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the amount of insured contractual payments (principal and interest) outstanding on the underlying insured obligations for direct financial guaranty contracts. + References No definition available. + Details
Name: | ago_InsuredFinancialObligationsInsuredContractualPaymentsOutstandingGross
Namespace Prefix: | ago_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents the amount of insured contractual payments (principal and interest) outstanding on the underlying insured obligations for financial guaranty contracts, net of ceded contracts. + References No definition available. + Details
Name: | ago_InsuredFinancialObligationsInsuredContractualPaymentsOutstandingNet
Namespace Prefix: | ago_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents the outstanding principal amounts of the underlying insured obligations for financial guaranty contracts, gross of ceded contracts. + References No definition available. + Details
Name: | ago_InsuredFinancialObligationsOutstandingPrincipalAmountGross
Namespace Prefix: | ago_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents the outstanding principal amounts of the underlying insured obligations for financial guaranty contracts, after netting out ceded contracts. + References No definition available. + Details
Name: | ago_InsuredFinancialObligationsOutstandingPrincipalAmountNet
Namespace Prefix: | ago_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Par Outstanding + References No definition available. + Details
Name: | ago_ParOutstandingAbstract
Namespace Prefix: | ago_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_UnderlyingAssetClassAxis=ago_PublicFinanceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_UnderlyingAssetClassAxis=us-gaap_StructuredFinanceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |