XML 181 R158.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Employee Benefits - Schedule of Changes in Level 3 Plan Assets Measured at Fair Value (Details) - Pension - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
U.S. Plans |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, beginning of year | $ 3,228 | $ 3,345
Fair value of plan assets, end of year | 2,976 | 3,228
Foreign Plan |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, beginning of year | 734 | 709
Fair value of plan assets, end of year | 704 | 734
Level 3 | U.S. Plans |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, beginning of year | 11 | 20
Net Realized and Unrealized Gains (Losses) | (1) | (4)
Purchases | 0 | 0
Sales | (3) | (5)
Issuances | 0 | 0
Settlements | 0 | 0
Transfers In | 0 | 0
Transfers Out | (1) | 0
Fair value of plan assets, end of year | 6 | 11
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year | 0 | (3)
Level 3 | U.S. Plans | Other Comprehensive Income (Loss) |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year | 0 | 0
Level 3 | Foreign Plan |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, beginning of year | 138 | 132
Net Realized and Unrealized Gains (Losses) | 21 | 6
Purchases | 2 | 0
Sales | 0 | 0
Issuances | 0 | 0
Settlements | 0 | 0
Transfers In | 0 | 0
Transfers Out | 0 | 0
Fair value of plan assets, end of year | 161 | 138
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year | 0 | 0
Level 3 | Foreign Plan | Other Comprehensive Income (Loss) |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year | 0 | 0
Direct private equity | Level 3 | U.S. Plans |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, beginning of year | 0 | 5
Net Realized and Unrealized Gains (Losses) |  | (5)
Purchases |  | 0
Sales |  | 0
Issuances |  | 0
Settlements |  | 0
Transfers In |  | 0
Transfers Out |  | 0
Fair value of plan assets, end of year |  | 0
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year |  | (5)
Direct private equity | Level 3 | U.S. Plans | Other Comprehensive Income (Loss) |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year |  | 0
Fixed maturity securities | U.S. investment grade | Level 3 | U.S. Plans |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, beginning of year | 10 | 10
Net Realized and Unrealized Gains (Losses) | (1) | 1
Purchases | 0 | 0
Sales | (3) | (1)
Issuances | 0 | 0
Settlements | 0 | 0
Transfers In | 0 | 0
Transfers Out | (1) | 0
Fair value of plan assets, end of year | 5 | 10
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year | 0 | 1
Fixed maturity securities | U.S. investment grade | Level 3 | U.S. Plans | Other Comprehensive Income (Loss) |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year | 0 | 0
Fixed maturity securities | U.S. investment grade | Level 3 | Foreign Plan |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, beginning of year | 0 |
Fair value of plan assets, end of year | 0 | 0
Fixed maturity securities | Mortgage-backed, asset-backed and collateralized | Level 3 | U.S. Plans |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, beginning of year | 1 | 5
Net Realized and Unrealized Gains (Losses) | 0 | 0
Purchases | 0 | 0
Sales | 0 | (4)
Issuances | 0 | 0
Settlements | 0 | 0
Transfers In | 0 | 0
Transfers Out | 0 | 0
Fair value of plan assets, end of year | 1 | 1
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year | 0 | 1
Fixed maturity securities | Mortgage-backed, asset-backed and collateralized | Level 3 | U.S. Plans | Other Comprehensive Income (Loss) |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year | 0 | 0
Fixed maturity securities | Mortgage-backed, asset-backed and collateralized | Level 3 | Foreign Plan |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, beginning of year | 0 |
Fair value of plan assets, end of year | 0 | 0
Insurance contracts | Level 3 | Foreign Plan |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, beginning of year | 138 | 132
Net Realized and Unrealized Gains (Losses) | 21 | 6
Purchases | 2 | 0
Sales | 0 | 0
Issuances | 0 | 0
Settlements | 0 | 0
Transfers In | 0 | 0
Transfers Out | 0 | 0
Fair value of plan assets, end of year | 161 | 138
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year | 0 | 0
Insurance contracts | Level 3 | Foreign Plan | Other Comprehensive Income (Loss) |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year | $ 0 | $ 0

X
- Definition Defined Benefit Plan Actual Return On Plan Assets During Period + References No definition available. + Details
Name: | aig_DefinedBenefitPlanActualReturnOnPlanAssetsDuringPeriod
Namespace Prefix: | aig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Defined Benefit Plan Plan Assets Level 3 Reconciliation Increase Decrease For Purchase + References No definition available. + Details
Name: | aig_DefinedBenefitPlanPlanAssetsLevel3ReconciliationIncreaseDecreaseForPurchase
Namespace Prefix: | aig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Defined Benefit Plan, Plan Assets Level 3 Reconciliation Increase For Issuances + References No definition available. + Details
Name: | aig_DefinedBenefitPlanPlanAssetsLevel3ReconciliationIncreaseForIssuances
Namespace Prefix: | aig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Defined Benefit Plan Transfers In + References No definition available. + Details
Name: | aig_DefinedBenefitPlanTransfersIn
Namespace Prefix: | aig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Defined Benefit Plan Transfers Out + References No definition available. + Details
Name: | aig_DefinedBenefitPlanTransfersOut
Namespace Prefix: | aig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, measured using unobservable inputs, of increase (decrease) in plan assets of defined benefit plan from actual return (loss) on assets still held. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(02)(A) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
Name: | us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(02) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
Name: | us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, measured using unobservable input, of decrease in plan asset of defined benefit plan from sale. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(02)(B) -SubTopic 20 -Topic 715 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
Name: | us-gaap_DefinedBenefitPlanPlanAssetsLevel3ReconciliationDecreaseForSale
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount, measured using unobservable input, of decrease in plan asset of defined benefit plan from settlement of trade associated with underlying investment. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(02)(B) -SubTopic 20 -Topic 715 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
Name: | us-gaap_DefinedBenefitPlanPlanAssetsLevel3ReconciliationDecreaseForSettlement
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_RetirementPlanSponsorLocationAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanSponsorLocationAxis=us-gaap_ForeignPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_OtherComprehensiveIncomeLocationAxis=us-gaap_OtherComprehensiveIncomeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_PrivateEquityFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_DefinedBenefitPlanDebtSecurityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=aig_USInvestmentGradeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_AssetBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=aig_InsuranceContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |