5000000000--Q3no0000005272FALSE--12-31TRUE-P2YP4YnonoYesYesP1Y2.5nozerozeronoLarge Accelerated Filer2019P7Y10 year96 0000005272 us-gaap:EquitySecuritiesMember 2018-01-01 2018-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:USTreasuryAndGovernmentMember 2019-09-30 0000005272 2018-01-01 2018-09-30 0000005272 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2018-01-01 2018-09-30 0000005272 2019-09-30 0000005272 2018-09-30 0000005272 aig:CommercialMortgageMember 2019-01-01 2019-09-30 0000005272 aig:OtherInvestedAssetsMember aig:NetRealizedCapitalGainsLossesMember 2018-01-01 2018-09-30 0000005272 2019-01-01 2019-09-30 0000005272 aig:OtherInvestedAssetsMember 2018-01-01 2018-09-30 0000005272 us-gaap:OperatingIncomeLossMember us-gaap:MaterialReconcilingItemsMember 2018-01-01 2018-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:USTreasuryAndGovernmentMember 2018-12-31 0000005272 us-gaap:TreasuryStockMember 2018-01-01 2018-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:USStatesAndPoliticalSubdivisionsMember 2018-01-01 2018-09-30 0000005272 us-gaap:InterestRateContractMember 2018-01-01 2018-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember 2019-09-30 0000005272 aig:Maturity31To90DaysMember us-gaap:USTreasuryAndGovernmentMember aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember 2018-12-31 0000005272 aig:OtherVIEMember us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember 2018-12-31 0000005272 aig:OtherInvestedAssetsMember us-gaap:OtherIncomeMember 2018-01-01 2018-09-30 0000005272 aig:OtherInvestedAssetsMember 2018-09-30 0000005272 us-gaap:AccumulatedTranslationAdjustmentMember 2018-01-01 2018-09-30 0000005272 aig:NorthAmericanCommercialInsuranceMember 2018-01-01 2018-09-30 0000005272 us-gaap:AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember 2018-01-01 2018-09-30 0000005272 aig:UnrealizedLossPositionMember 2019-09-30 0000005272 aig:CommercialOtherFinancingReceivableMember 2018-12-31 0000005272 us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember aig:RealEstateAndInvestmentFundsMember 2019-09-30 0000005272 us-gaap:InterestRateContractMember us-gaap:FairValueHedgingMember us-gaap:DesignatedAsHedgingInstrumentMember aig:NetRealizedCapitalGainsLossesMember 2018-01-01 2018-09-30 0000005272 us-gaap:MeasurementInputMortalityRateMember aig:IndexLifeMember srt:MinimumMember 2019-09-30 0000005272 srt:ConsolidationEliminationsMember 2019-09-30 0000005272 aig:BondsTradingSecuritiesMember 2019-01-01 2019-09-30 0000005272 us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember aig:AffordableHousingPartnershipMember 2019-09-30 0000005272 us-gaap:USTreasuryAndGovernmentMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2018-12-31 0000005272 aig:BondsTradingSecuritiesMember 2018-09-30 0000005272 aig:PolicyholderContractDepositsMember 2018-01-01 2018-09-30 0000005272 aig:AccidentYears2015AndPriorMember aig:NICOMember aig:UsLongTailInsuranceLinesMember 2017-01-20 0000005272 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember 2019-01-01 2019-09-30 0000005272 us-gaap:FixedMaturitiesMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2018-12-31 0000005272 srt:MinimumMember us-gaap:MeasurementInputConstantPrepaymentRateMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2018-12-31 0000005272 2018-12-31 0000005272 us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2019-01-01 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2019-09-30 0000005272 us-gaap:ForeignGovernmentDebtSecuritiesMember aig:BondsAvailableForSaleSecuritiesMember 2019-01-01 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:USStatesAndPoliticalSubdivisionsMember 2018-06-30 0000005272 aig:MortgageAndOtherLoansReceivableMember 2018-01-01 2018-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember us-gaap:FairValueInputsLevel3Member 2019-09-30 0000005272 us-gaap:PensionPlansDefinedBenefitMember 2018-01-01 2018-09-30 0000005272 us-gaap:ParentMember 2018-01-01 2018-09-30 0000005272 us-gaap:AdditionalPaidInCapitalMember 2018-01-01 2018-09-30 0000005272 srt:ConsolidationEliminationsMember 2018-01-01 2018-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member 2019-09-30 0000005272 us-gaap:FixedMaturitiesMember 2019-01-01 2019-09-30 0000005272 aig:CommercialOtherFinancingReceivableMember 2019-09-30 0000005272 aig:AIGLifeHoldingsUSIncMember 2019-09-30 0000005272 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000005272 us-gaap:OtherContractMember 2019-01-01 2019-09-30 0000005272 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsNonrecurringMember aig:AlternativeFundsMember 2018-12-31 0000005272 aig:OtherInvestedAssetsMember 2019-01-01 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2018-06-30 0000005272 us-gaap:PreferredStockIncludingAdditionalPaidInCapitalMember 2018-01-01 2018-09-30 0000005272 srt:ParentCompanyMember 2018-12-31 0000005272 us-gaap:CreditRiskContractMember 2018-01-01 2018-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember 2018-01-01 2018-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember 2018-12-31 0000005272 aig:BondsAvailableForSaleSecuritiesMember 2019-01-01 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:FairValueInputsLevel1Member 2018-12-31 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member us-gaap:OtherContractMember 2018-12-31 0000005272 us-gaap:ResidentialMortgageBackedSecuritiesMember aig:BondsTradingSecuritiesMember 2019-01-01 2019-09-30 0000005272 us-gaap:FixedMaturitiesMember aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2018-12-31 0000005272 aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember us-gaap:ForeignGovernmentDebtSecuritiesMember 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member us-gaap:CorporateDebtSecuritiesMember 2019-09-30 0000005272 us-gaap:VariableInterestEntityPrimaryBeneficiaryMember aig:SecuritizationVehiclesMember 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:SecuredFinancingsMember us-gaap:CorporateDebtSecuritiesMember us-gaap:MaturityUpTo30DaysMember 2018-12-31 0000005272 aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember us-gaap:CorporateDebtSecuritiesMember us-gaap:MaturityUpTo30DaysMember 2019-09-30 0000005272 us-gaap:OtherContractMember 2018-01-01 2018-09-30 0000005272 us-gaap:IntersegmentEliminationMember 2019-01-01 2019-09-30 0000005272 us-gaap:CorporateDebtSecuritiesMember aig:BondsAvailableForSaleSecuritiesMember 2019-01-01 2019-09-30 0000005272 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:CorporateDebtSecuritiesMember 2019-09-30 0000005272 aig:ValidusHoldingsLtdMember 2018-12-31 0000005272 aig:AIGLifeHoldingsUSIncMember 2019-01-01 2019-09-30 0000005272 aig:AIGLifeHoldingsUSIncMember 2018-01-01 2018-09-30 0000005272 us-gaap:FixedMaturitiesMember us-gaap:CommercialMortgageBackedSecuritiesMember 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:Maturity31To90DaysMember aig:SecuredFinancingsMember us-gaap:ForeignGovernmentDebtSecuritiesMember 2019-09-30 0000005272 us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember 2018-01-01 2018-09-30 0000005272 srt:MinimumMember us-gaap:CreditIndexProductMember aig:MeasurementInputMortalityMultiplierMember 2019-09-30 0000005272 us-gaap:USTreasuryAndGovernmentMember aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember 2018-12-31 0000005272 aig:CommercialMortgageMember aig:CommercialMortgageCreditQualityIndicatorRangeOneMember aig:DebtServiceCoverageRatioRangeTwoMember 2019-09-30 0000005272 us-gaap:VariableInterestEntityPrimaryBeneficiaryMember aig:SecuritizationVehiclesMember 2018-12-31 0000005272 aig:PolicyholderContractDepositsMember 2018-09-30 0000005272 aig:PurchasedCreditImpairedSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2018-06-30 0000005272 us-gaap:CommonStockMember 2018-01-01 2018-09-30 0000005272 us-gaap:TreasuryStockMember 2019-09-30 0000005272 aig:MeasurementInputYieldMember aig:CertainCollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember srt:MaximumMember 2018-12-31 0000005272 us-gaap:CommercialMortgageBackedSecuritiesMember aig:BondsAvailableForSaleSecuritiesMember 2019-01-01 2019-09-30 0000005272 aig:RevenueMember us-gaap:MaterialReconcilingItemsMember 2019-01-01 2019-09-30 0000005272 aig:CreditRiskRelatedContingentFeaturesMember 2019-09-30 0000005272 aig:MeasurementInputYieldMember srt:MaximumMember us-gaap:USStatesAndPoliticalSubdivisionsMember 2019-09-30 0000005272 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsNonrecurringMember aig:FairValueAssetsImpairmentChargesMeasuredOnNonrecurringBasisDomain 2019-09-30 0000005272 srt:ConsolidationEliminationsMember 2019-01-01 2019-09-30 0000005272 us-gaap:AssetsMember 2019-01-01 2019-09-30 0000005272 us-gaap:InvestmentIncomeMember aig:BondsAvailableForSaleSecuritiesMember 2019-01-01 2019-09-30 0000005272 us-gaap:AccumulatedOtherThanTemporaryImpairmentMember 2018-01-01 2018-09-30 0000005272 us-gaap:MaterialReconcilingItemsMember aig:RevenueMember 2018-01-01 2018-09-30 0000005272 us-gaap:NondesignatedMember us-gaap:CreditRiskContractMember 2019-09-30 0000005272 srt:MinimumMember aig:MeasurementInputYieldMember us-gaap:CommercialMortgageBackedSecuritiesMember 2018-12-31 0000005272 us-gaap:NoncontrollingInterestMember 2018-01-01 2018-09-30 0000005272 aig:ValidusHoldingsLtdMember 2019-01-01 2019-09-30 0000005272 aig:LifeAndRetirementMember us-gaap:OperatingSegmentsMember aig:IndividualRetirementSegmentMember 2018-01-01 2018-09-30 0000005272 aig:LifeAndRetirementMember us-gaap:OperatingSegmentsMember 2018-01-01 2018-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:CorporateDebtSecuritiesMember 2018-01-01 2018-09-30 0000005272 us-gaap:AccumulatedOtherThanTemporaryImpairmentMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2018-01-01 2018-09-30 0000005272 srt:MinimumMember aig:MeasurementInputYieldMember aig:CertainCollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2019-09-30 0000005272 srt:MinimumMember us-gaap:CreditIndexProductMember aig:MeasurementInputOptionsBudgetMember 2019-09-30 0000005272 aig:HedgeFundsMacroValueMember 2018-12-31 0000005272 aig:BondsTradingSecuritiesMember us-gaap:CommercialMortgageBackedSecuritiesMember 2019-01-01 2019-09-30 0000005272 aig:LeveragedBuyoutMember 2019-09-30 0000005272 us-gaap:ResidentialMortgageBackedSecuritiesMember aig:BondsAvailableForSaleSecuritiesMember 2018-12-31 0000005272 us-gaap:ForeignGovernmentDebtSecuritiesMember aig:BondsAvailableForSaleSecuritiesMember 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2019-09-30 0000005272 us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2019-09-30 0000005272 us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueInputsLevel2Member 2018-12-31 0000005272 us-gaap:AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember 2019-01-01 2019-09-30 0000005272 us-gaap:RetainedEarningsMember 2018-01-01 2018-09-30 0000005272 us-gaap:DerivativeFinancialInstrumentsLiabilitiesMember 2018-01-01 2018-09-30 0000005272 us-gaap:ForeignExchangeContractMember 2019-01-01 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member us-gaap:OtherContractMember 2019-09-30 0000005272 us-gaap:USTreasuryAndGovernmentMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2018-12-31 0000005272 us-gaap:InterestRateContractMember us-gaap:NondesignatedMember 2018-12-31 0000005272 us-gaap:FixedMaturitiesMember us-gaap:CorporateDebtSecuritiesMember 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2018-01-01 2018-09-30 0000005272 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember 2018-01-01 2018-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:USStatesAndPoliticalSubdivisionsMember 2019-09-30 0000005272 srt:MaximumMember us-gaap:PrivateEquityFundsMember aig:FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareLiquidatingInvestmentRemainingPeriodCategoryThreeMember 2019-01-01 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:MortgageBackedSecuritiesMember 2018-12-31 0000005272 us-gaap:EquitySecuritiesMember 2019-01-01 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2018-12-31 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:SecuredFinancingsMember us-gaap:ForeignGovernmentDebtSecuritiesMember aig:Maturity365DaysorGreaterMember 2018-12-31 0000005272 us-gaap:NondesignatedMember us-gaap:CreditRiskContractMember us-gaap:CreditDefaultSwapMember 2018-12-31 0000005272 srt:ConsolidationEliminationsMember 2018-12-31 0000005272 us-gaap:FairValueMeasurementsNonrecurringMember aig:AlternativeFundsMember us-gaap:FairValueInputsLevel3Member 2018-12-31 0000005272 us-gaap:OperatingIncomeLossMember us-gaap:MaterialReconcilingItemsMember 2019-01-01 2019-09-30 0000005272 aig:LeveragedBuyoutMember 2018-12-31 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2018-12-31 0000005272 aig:OtherInvestmentMember 2019-01-01 2019-09-30 0000005272 aig:OtherVIEMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2019-09-30 0000005272 aig:ValidusHoldingsLtdMember 2019-01-01 2019-09-30 0000005272 us-gaap:DerivativeFinancialInstrumentsLiabilitiesMember 2019-01-01 2019-09-30 0000005272 aig:AffordableHousingPartnershipMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2018-12-31 0000005272 aig:LiabilitiesMember 2018-01-01 2018-09-30 0000005272 aig:PurchasedCreditImpairedSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2019-01-01 2019-09-30 0000005272 us-gaap:AccumulatedOtherThanTemporaryImpairmentMember 2019-09-30 0000005272 aig:FairValueOptionElectionMember 2018-12-31 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:EquityContractMember 2019-09-30 0000005272 us-gaap:DerivativeFinancialInstrumentsLiabilitiesMember us-gaap:OtherIncomeMember 2019-01-01 2019-09-30 0000005272 aig:NetRealizedCapitalGainsLossesMember us-gaap:NondesignatedMember 2019-01-01 2019-09-30 0000005272 us-gaap:OtherContractMember 2018-09-30 0000005272 us-gaap:AccumulatedTranslationAdjustmentMember 2018-12-31 0000005272 aig:BondsTradingSecuritiesMember us-gaap:CommercialMortgageBackedSecuritiesMember 2018-01-01 2018-09-30 0000005272 aig:MortgageAndOtherLoansMember 2019-01-01 2019-09-30 0000005272 aig:CommercialIndustrialFinancingReceivableMember 2018-12-31 0000005272 srt:MaximumMember us-gaap:GuaranteedMinimumWithdrawalBenefitMember us-gaap:MeasurementInputUtilizationRateMember 2018-12-31 0000005272 aig:BondsTradingSecuritiesMember 2018-01-01 2018-09-30 0000005272 us-gaap:AccumulatedTranslationAdjustmentMember 2018-09-30 0000005272 us-gaap:ResidentialMortgageBackedSecuritiesMember aig:BondsTradingSecuritiesMember 2018-01-01 2018-09-30 0000005272 us-gaap:InvestmentIncomeMember aig:PolicyholderContractDepositsMember 2019-01-01 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2019-01-01 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:USStatesAndPoliticalSubdivisionsMember 2018-12-31 0000005272 aig:CommercialOfficesFinancingReceivableMember 2019-09-30 0000005272 aig:CommercialMortgageMember 2019-01-01 2019-09-30 0000005272 aig:CommercialMortgageMember 2019-09-30 0000005272 us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2018-01-01 2018-09-30 0000005272 us-gaap:AccumulatedTranslationAdjustmentMember 2019-01-01 2019-09-30 0000005272 us-gaap:FixedMaturitiesMember 2018-09-30 0000005272 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:CorporateDebtSecuritiesMember 2018-12-31 0000005272 aig:MortgageAndOtherLoansReceivableMember 2019-01-01 2019-09-30 0000005272 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2018-01-01 2018-09-30 0000005272 us-gaap:InterestRateContractMember 2019-01-01 2019-09-30 0000005272 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2019-01-01 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:CommercialMortgageBackedSecuritiesMember 2018-01-01 2018-09-30 0000005272 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2019-01-01 2019-09-30 0000005272 aig:BondsTradingSecuritiesMember aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2018-01-01 2018-09-30 0000005272 us-gaap:FairValueInputsLevel3Member us-gaap:USStatesAndPoliticalSubdivisionsMember aig:DiscountedCashflowValuationTechniqueMember 2018-12-31 0000005272 us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2018-12-31 0000005272 aig:CommercialMortgageMember 2018-09-30 0000005272 us-gaap:AssetsMember 2018-01-01 2018-09-30 0000005272 us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000005272 us-gaap:CorporateDebtSecuritiesMember aig:BondsAvailableForSaleSecuritiesMember 2019-09-30 0000005272 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2018-12-31 0000005272 2018-06-30 0000005272 us-gaap:AccumulatedOtherThanTemporaryImpairmentMember 2019-01-01 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignExchangeContractMember 2019-09-30 0000005272 aig:CommercialMortgageMember aig:DebtServiceCoverageRatioRangeOneMember aig:CommercialMortgageCreditQualityIndicatorRangeFourMember 2018-12-31 0000005272 us-gaap:USTreasuryAndGovernmentMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:Maturity31To90DaysMember aig:SecuredFinancingsMember us-gaap:CorporateDebtSecuritiesMember 2018-12-31 0000005272 us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember aig:AffordableHousingPartnershipMember 2018-12-31 0000005272 us-gaap:FairValueMeasurementsNonrecurringMember aig:FairValueAssetsImpairmentChargesMeasuredOnNonrecurringBasisDomain 2019-01-01 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:SecuredFinancingsMember us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:MaturityUpTo30DaysMember 2019-09-30 0000005272 aig:PurchasedCreditImpairedSecuritiesMember 2019-09-30 0000005272 aig:CommercialMortgageMember 2019-09-30 0000005272 us-gaap:InterestRateContractMember us-gaap:FairValueHedgingMember us-gaap:DesignatedAsHedgingInstrumentMember aig:NetRealizedCapitalGainsLossesMember 2019-01-01 2019-09-30 0000005272 aig:Maturity365DaysorGreaterMember 2019-09-30 0000005272 aig:CommercialHotelFinancingReceivableMember 2018-12-31 0000005272 aig:CommercialMortgageMember aig:CommercialMortgageCreditQualityIndicatorTotalMember aig:DebtServiceCoverageRatioRangeThreeMember 2018-12-31 0000005272 aig:AffordableHousingPartnershipMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:ForeignGovernmentDebtSecuritiesMember 2018-09-30 0000005272 us-gaap:FairValueMeasurementsNonrecurringMember aig:FairValueAssetsImpairmentChargesMeasuredOnNonrecurringBasisDomain us-gaap:EstimateOfFairValueFairValueDisclosureMember 2019-09-30 0000005272 aig:CommercialMortgageMember aig:CommercialMortgageCreditQualityIndicatorRangeOneMember aig:DebtServiceCoverageRatioRangeOneMember 2018-12-31 0000005272 aig:MortgageAndOtherLoansMember 2018-01-01 2018-09-30 0000005272 aig:MeasurementInputMortalityMultiplierMember srt:MaximumMember us-gaap:GuaranteedMinimumWithdrawalBenefitMember 2018-12-31 0000005272 us-gaap:RealEstateInvestmentMember 2019-01-01 2019-09-30 0000005272 aig:RealEstateAndInvestmentFundsMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2019-09-30 0000005272 aig:OtherVIEMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2018-12-31 0000005272 aig:BondsTradingSecuritiesMember us-gaap:CommercialMortgageBackedSecuritiesMember 2018-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:SecuredFinancingsMember us-gaap:CorporateDebtSecuritiesMember us-gaap:MaturityUpTo30DaysMember 2019-09-30 0000005272 us-gaap:FairValueMeasurementsNonrecurringMember aig:AlternativeFundsMember us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000005272 us-gaap:CommonStockMember 2018-12-31 0000005272 us-gaap:OtherIncomeMember aig:BondsTradingSecuritiesMember 2019-01-01 2019-09-30 0000005272 us-gaap:FairValueInputsLevel3Member us-gaap:CommercialMortgageBackedSecuritiesMember aig:DiscountedCashflowValuationTechniqueMember 2018-12-31 0000005272 us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember 2018-12-31 0000005272 us-gaap:OtherContractMember us-gaap:NondesignatedMember 2018-01-01 2018-09-30 0000005272 us-gaap:FixedMaturitiesMember us-gaap:CommercialMortgageBackedSecuritiesMember 2018-12-31 0000005272 aig:CommercialRetailFinancingReceivableMember 2018-12-31 0000005272 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2019-09-30 0000005272 us-gaap:ForeignGovernmentDebtSecuritiesMember aig:BondsAvailableForSaleSecuritiesMember 2018-12-31 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:FairValueInputsLevel3Member 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:SecuredFinancingsMember us-gaap:CorporateDebtSecuritiesMember 2018-12-31 0000005272 aig:CommercialMortgageMember aig:DebtServiceCoverageRatioRangeThreeMember aig:CommercialMortgageCreditQualityIndicatorRangeThreeMember 2018-12-31 0000005272 aig:PurchasedCreditImpairedSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2018-09-30 0000005272 srt:MinimumMember us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:MeasurementInputLossSeverityMember 2018-12-31 0000005272 aig:CommercialMortgageMember 2018-01-01 2018-12-31 0000005272 aig:CommercialApartmentsFinancingReceivableMember 2019-09-30 0000005272 us-gaap:CorporateDebtSecuritiesMember aig:BondsAvailableForSaleSecuritiesMember 2018-12-31 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:MortgageBackedSecuritiesMember 2019-09-30 0000005272 aig:LiabilitiesMember 2019-01-01 2019-09-30 0000005272 us-gaap:USStatesAndPoliticalSubdivisionsMember aig:BondsAvailableForSaleSecuritiesMember 2019-01-01 2019-09-30 0000005272 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:USStatesAndPoliticalSubdivisionsMember 2018-12-31 0000005272 us-gaap:ResidentialMortgageMember 2019-09-30 0000005272 srt:ParentCompanyMember 2019-09-30 0000005272 us-gaap:USTreasuryAndGovernmentMember us-gaap:FixedMaturitiesMember 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:USStatesAndPoliticalSubdivisionsMember 2018-09-30 0000005272 aig:OtherSubsidiariesMember 2018-12-31 0000005272 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsNonrecurringMember aig:OtherAssetsMiscellaneousMember 2018-12-31 0000005272 aig:PurchasedCreditImpairedSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2018-01-01 2018-09-30 0000005272 aig:CommercialMortgageMember aig:CommercialMortgageCreditQualityIndicatorRangeOneMember aig:DebtServiceCoverageRatioRangeTotalMember 2018-12-31 0000005272 us-gaap:ForeignGovernmentDebtSecuritiesMember aig:BondsAvailableForSaleSecuritiesMember 2018-01-01 2018-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:FairValueInputsLevel3Member 2019-09-30 0000005272 aig:CommercialIndustrialFinancingReceivableMember 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:CorporateDebtSecuritiesMember 2018-12-31 0000005272 aig:CommercialRetailFinancingReceivableMember 2019-09-30 0000005272 aig:MeasurementInputYieldMember us-gaap:USStatesAndPoliticalSubdivisionsMember srt:WeightedAverageMember 2019-09-30 0000005272 srt:MinimumMember us-gaap:ResidentialMortgageBackedSecuritiesMember aig:MeasurementInputYieldMember 2018-12-31 0000005272 aig:OtherHedgeFundsMember 2018-12-31 0000005272 aig:BondsTradingSecuritiesMember aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2019-01-01 2019-09-30 0000005272 aig:PurchasedCreditImpairedSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2019-09-30 0000005272 srt:MinimumMember us-gaap:MeasurementInputConstantPrepaymentRateMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2019-09-30 0000005272 aig:PolicyholderContractDepositsMember aig:NetRealizedCapitalGainsLossesMember 2018-01-01 2018-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:CommercialMortgageBackedSecuritiesMember 2018-12-31 0000005272 aig:NorthAmericanCommercialInsuranceMember 2018-12-31 0000005272 aig:ValidusHoldingsLtdMember 2019-09-30 0000005272 us-gaap:PensionPlansDefinedBenefitMember 2019-01-01 2019-09-30 0000005272 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2018-12-31 0000005272 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:OtherContractMember 2018-12-31 0000005272 aig:NetRealizedCapitalGainsLossesMember aig:BondsTradingSecuritiesMember 2018-01-01 2018-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member 2018-12-31 0000005272 aig:CommercialMortgageMember aig:CommercialMortgageCreditQualityIndicatorRangeOneMember aig:DebtServiceCoverageRatioRangeTwoMember 2018-12-31 0000005272 aig:IndexLifeMember us-gaap:FairValueInputsLevel3Member aig:DiscountedCashflowValuationTechniqueMember 2018-12-31 0000005272 aig:NetRealizedCapitalGainsLossesMember aig:PolicyholderContractDepositsMember 2019-01-01 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:FairValueInputsLevel1Member 2019-09-30 0000005272 aig:NetRealizedCapitalGainsLossesMember aig:BondsTradingSecuritiesMember 2019-01-01 2019-09-30 0000005272 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:ForeignExchangeContractMember 2019-09-30 0000005272 aig:ValidusHoldingsLtdMember 2018-01-01 2018-09-30 0000005272 aig:SecuredFinancingsMember aig:Maturity365DaysorGreaterMember 2019-09-30 0000005272 us-gaap:NondesignatedMember 2019-01-01 2019-09-30 0000005272 aig:LifeAndRetirementMember us-gaap:OperatingSegmentsMember aig:InstitutionalMarketsMember 2019-01-01 2019-09-30 0000005272 aig:OtherSubsidiariesMember 2018-01-01 2018-09-30 0000005272 us-gaap:OtherAssetsMember 2018-12-31 0000005272 aig:OtherMortgagesMember 2019-01-01 2019-09-30 0000005272 aig:SecuredFinancingsMember us-gaap:FixedMaturitiesMember 2018-12-31 0000005272 us-gaap:ParentMember 2018-09-30 0000005272 srt:MinimumMember us-gaap:GuaranteedMinimumWithdrawalBenefitMember aig:MeasurementInputEquityInterestRateCorrelationMember 2019-09-30 0000005272 aig:CommercialMortgageMember 2018-12-31 0000005272 us-gaap:DerivativeFinancialInstrumentsLiabilitiesMember us-gaap:InvestmentIncomeMember 2019-01-01 2019-09-30 0000005272 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:CreditRiskContractMember 2018-12-31 0000005272 aig:NetRealizedCapitalGainsLossesMember aig:OtherInvestedAssetsMember 2019-01-01 2019-09-30 0000005272 srt:MinimumMember us-gaap:GuaranteedMinimumWithdrawalBenefitMember aig:MeasurementInputBaseLapseRatesMember 2018-12-31 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member us-gaap:CommercialMortgageBackedSecuritiesMember 2019-09-30 0000005272 us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:FairValueInputsLevel3Member aig:DiscountedCashflowValuationTechniqueMember 2018-12-31 0000005272 us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember 2018-12-31 0000005272 us-gaap:FederalHomeLoanBankCertificatesAndObligationsFHLBMember 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember us-gaap:FairValueInputsLevel3Member 2018-12-31 0000005272 aig:PolicyholderContractDepositsMember 2019-01-01 2019-09-30 0000005272 us-gaap:HedgeFundsEquityLongShortMember 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignGovernmentDebtSecuritiesMember 2018-12-31 0000005272 us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember 2019-09-30 0000005272 us-gaap:ForeignExchangeContractMember 2018-01-01 2018-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember us-gaap:FairValueInputsLevel1Member 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:SecuredFinancingsMember us-gaap:CorporateDebtSecuritiesMember aig:Maturity365DaysorGreaterMember 2018-12-31 0000005272 aig:AIGLifeHoldingsUSIncMember 2018-12-31 0000005272 2019-06-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member us-gaap:EquityContractMember 2019-09-30 0000005272 srt:MaximumMember us-gaap:GuaranteedMinimumWithdrawalBenefitMember aig:MeasurementInputEquityInterestRateCorrelationMember 2019-09-30 0000005272 aig:ValidusHoldingsLtdMember 2018-07-18 0000005272 us-gaap:InvestmentIncomeMember aig:OtherInvestedAssetsMember 2019-01-01 2019-09-30 0000005272 us-gaap:EquityContractMember 2019-01-01 2019-09-30 0000005272 us-gaap:ResidentialMortgageBackedSecuritiesMember aig:BondsAvailableForSaleSecuritiesMember 2019-01-01 2019-09-30 0000005272 us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:FairValueHedgingMember aig:InterestCreditedToPolicyholdersAccountBalancesMember us-gaap:InterestRateContractMember 2018-01-01 2018-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignGovernmentDebtSecuritiesMember 2019-09-30 0000005272 srt:ParentCompanyMember 2019-01-01 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member us-gaap:CreditRiskContractMember 2018-12-31 0000005272 aig:CommercialMortgageMember aig:CommercialMortgageCreditQualityIndicatorTotalMember aig:DebtServiceCoverageRatioRangeThreeMember 2019-09-30 0000005272 us-gaap:ResidentialMortgageBackedSecuritiesMember srt:WeightedAverageMember aig:MeasurementInputConstantDefaultRateMember 2019-09-30 0000005272 us-gaap:CreditIndexProductMember srt:MaximumMember aig:MeasurementInputOptionsBudgetMember 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:InvestmentIncomeMember 2018-01-01 2018-09-30 0000005272 us-gaap:TreasuryStockMember 2019-01-01 2019-09-30 0000005272 aig:CommercialMortgageMember 2018-01-01 2018-09-30 0000005272 us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000005272 aig:OtherPrivateEquityFundsMember 2018-12-31 0000005272 aig:LegacyPropertyAndCasualtyRunOffInsuranceLinesMember 2019-01-01 2019-09-30 0000005272 us-gaap:EquityContractMember 2018-01-01 2018-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:AccumulatedOtherThanTemporaryImpairmentMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2019-09-30 0000005272 aig:PurchasedCreditImpairedSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2019-06-30 0000005272 aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:MaturityOvernightAndOnDemandMember 2019-09-30 0000005272 aig:OtherMortgagesMember 2018-12-31 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:FairValueInputsLevel1Member 2019-09-30 0000005272 us-gaap:SeriesAPreferredStockMember 2019-03-14 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:EquityContractMember 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignExchangeContractMember 2019-09-30 0000005272 aig:OtherMortgagesMember 2018-09-30 0000005272 us-gaap:FixedMaturitiesMember aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2019-09-30 0000005272 us-gaap:InterestRateContractMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member 2018-12-31 0000005272 aig:DistressedHedgeFundsMember 2019-09-30 0000005272 aig:MeasurementInputYieldMember aig:CertainCollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember srt:MaximumMember 2019-09-30 0000005272 us-gaap:FairValueInputsLevel3Member us-gaap:CreditIndexProductMember aig:DiscountedCashflowValuationTechniqueMember 2019-09-30 0000005272 aig:SecuredFinancingsMember us-gaap:MaturityUpTo30DaysMember 2019-09-30 0000005272 aig:CommercialLoansOtherLoansAndNotesReceivableMember 2018-12-31 0000005272 us-gaap:AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember 2018-12-31 0000005272 us-gaap:VentureCapitalFundsMember 2019-09-30 0000005272 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2018-12-31 0000005272 us-gaap:CommercialMortgageBackedSecuritiesMember aig:BondsAvailableForSaleSecuritiesMember 2019-09-30 0000005272 aig:PurchasedCreditImpairedSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2018-12-31 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:SecuredFinancingsMember us-gaap:ForeignGovernmentDebtSecuritiesMember 2018-12-31 0000005272 us-gaap:ResidentialMortgageBackedSecuritiesMember aig:BondsAvailableForSaleSecuritiesMember 2018-01-01 2018-09-30 0000005272 us-gaap:OtherIncomeMember aig:PolicyholderContractDepositsMember 2018-01-01 2018-09-30 0000005272 aig:CommercialApartmentsFinancingReceivableMember 2018-12-31 0000005272 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2018-01-01 2018-09-30 0000005272 us-gaap:FixedMaturitiesMember 2018-01-01 2018-09-30 0000005272 us-gaap:FairValueHedgingMember us-gaap:DesignatedAsHedgingInstrumentMember aig:NetRealizedCapitalGainsLossesMember us-gaap:ForeignExchangeContractMember 2019-01-01 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:CorporateDebtSecuritiesMember 2019-09-30 0000005272 aig:OtherSubsidiariesMember 2019-01-01 2019-09-30 0000005272 srt:ParentCompanyMember us-gaap:OtherAssetsMember 2018-12-31 0000005272 us-gaap:FixedMaturitiesMember 2018-12-31 0000005272 us-gaap:EquitySecuritiesMember 2018-12-31 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:SecuredFinancingsMember us-gaap:CorporateDebtSecuritiesMember aig:Maturity91To364DaysMember 2019-09-30 0000005272 us-gaap:ForeignExchangeContractMember 2018-09-30 0000005272 us-gaap:AccumulatedOtherThanTemporaryImpairmentMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2019-01-01 2019-09-30 0000005272 us-gaap:FairValueHedgingMember us-gaap:DesignatedAsHedgingInstrumentMember aig:NetRealizedCapitalGainsLossesMember us-gaap:ForeignExchangeContractMember 2018-01-01 2018-09-30 0000005272 srt:MinimumMember aig:MeasurementInputYieldMember us-gaap:USStatesAndPoliticalSubdivisionsMember 2019-09-30 0000005272 srt:ParentCompanyMember 2018-01-01 2018-09-30 0000005272 us-gaap:USTreasuryAndGovernmentMember aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember aig:Maturity91To364DaysMember 2018-12-31 0000005272 us-gaap:USTreasuryAndGovernmentMember aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember us-gaap:MaturityOvernightAndOnDemandMember 2019-09-30 0000005272 us-gaap:NondesignatedMember us-gaap:EquityContractMember 2019-09-30 0000005272 us-gaap:NondesignatedMember us-gaap:EquityContractMember 2018-12-31 0000005272 srt:MinimumMember aig:MeasurementInputMortalityMultiplierMember us-gaap:GuaranteedMinimumWithdrawalBenefitMember 2019-09-30 0000005272 us-gaap:NondesignatedMember us-gaap:InvestmentIncomeMember 2019-01-01 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:CorporateDebtSecuritiesMember 2018-09-30 0000005272 srt:ParentCompanyMember 2018-09-30 0000005272 srt:MaximumMember us-gaap:GuaranteedMinimumWithdrawalBenefitMember aig:MeasurementInputEquityVolatilityMember 2018-12-31 0000005272 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsNonrecurringMember aig:FairValueAssetsImpairmentChargesMeasuredOnNonrecurringBasisDomain 2018-12-31 0000005272 aig:LegacyPortfolioMember 2019-01-01 2019-09-30 0000005272 us-gaap:OtherAssetsMember 2019-01-01 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember 2018-12-31 0000005272 srt:MinimumMember us-gaap:CreditIndexProductMember us-gaap:MeasurementInputLapseRateMember 2018-12-31 0000005272 aig:OtherInvestmentMember 2018-01-01 2018-09-30 0000005272 aig:Maturity31To90DaysMember 2019-09-30 0000005272 aig:GrowthEquityMember 2018-12-31 0000005272 us-gaap:USTreasuryAndGovernmentMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000005272 us-gaap:InterestRateContractMember us-gaap:NondesignatedMember 2018-01-01 2018-09-30 0000005272 us-gaap:FairValueMeasurementsNonrecurringMember aig:AlternativeFundsMember 2019-01-01 2019-09-30 0000005272 aig:AlternativeFundsMember us-gaap:FairValueMeasurementsNonrecurringMember 2018-01-01 2018-09-30 0000005272 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:OtherContractMember 2019-09-30 0000005272 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2018-12-31 0000005272 us-gaap:EstimateOfFairValueFairValueDisclosureMember 2019-09-30 0000005272 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:CommercialMortgageBackedSecuritiesMember 2018-12-31 0000005272 us-gaap:ResidentialMortgageBackedSecuritiesMember aig:MeasurementInputYieldMember srt:MaximumMember 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000005272 us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueInputsLevel3Member 2019-09-30 0000005272 aig:LifeAndRetirementMember us-gaap:OperatingSegmentsMember aig:GroupRetirementSegmentMember 2019-01-01 2019-09-30 0000005272 us-gaap:InterestRateContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2018-12-31 0000005272 us-gaap:NondesignatedMember us-gaap:CreditRiskContractMember us-gaap:CreditDefaultSwapMember 2019-09-30 0000005272 srt:MinimumMember us-gaap:ResidentialMortgageBackedSecuritiesMember aig:MeasurementInputYieldMember 2019-09-30 0000005272 us-gaap:MeasurementInputConstantPrepaymentRateMember us-gaap:ResidentialMortgageBackedSecuritiesMember srt:WeightedAverageMember 2018-12-31 0000005272 aig:SecuredFinancingsMember aig:Maturity365DaysorGreaterMember 2018-12-31 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignExchangeContractMember 2018-12-31 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:AccumulatedOtherThanTemporaryImpairmentMember us-gaap:CorporateDebtSecuritiesMember 2018-12-31 0000005272 aig:SecuredFinancingsMember aig:BondsAvailableForSaleSecuritiesMember aig:Maturity91To364DaysMember us-gaap:USStatesAndPoliticalSubdivisionsMember 2019-09-30 0000005272 us-gaap:EquitySecuritiesMember 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:SecuredFinancingsMember us-gaap:ForeignGovernmentDebtSecuritiesMember aig:Maturity91To364DaysMember 2019-09-30 0000005272 us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:ForeignExchangeContractMember 2018-12-31 0000005272 us-gaap:RealEstateInvestmentMember 2018-01-01 2018-09-30 0000005272 us-gaap:PolicyLoansMember 2018-12-31 0000005272 aig:OtherVIEMember us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CreditRiskContractMember 2019-09-30 0000005272 aig:OtherInvestedAssetsMember us-gaap:InvestmentIncomeMember 2018-01-01 2018-09-30 0000005272 us-gaap:NondesignatedMember 2018-01-01 2018-09-30 0000005272 aig:LegacyPropertyAndCasualtyRunOffInsuranceLinesMember 2018-01-01 2018-09-30 0000005272 aig:MeasurementInputMortalityMultiplierMember srt:MaximumMember us-gaap:GuaranteedMinimumWithdrawalBenefitMember 2019-09-30 0000005272 us-gaap:FixedMaturitiesMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2019-09-30 0000005272 us-gaap:DerivativeFinancialInstrumentsLiabilitiesMember us-gaap:OtherIncomeMember 2018-01-01 2018-09-30 0000005272 srt:ConsolidationEliminationsMember 2018-09-30 0000005272 us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueInputsLevel3Member 2018-12-31 0000005272 us-gaap:FairValueMeasurementsRecurringMember aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember us-gaap:FairValueInputsLevel1Member 2018-12-31 0000005272 srt:MaximumMember us-gaap:GuaranteedMinimumWithdrawalBenefitMember us-gaap:MeasurementInputUtilizationRateMember 2019-09-30 0000005272 aig:CommercialOfficesFinancingReceivableMember 2018-12-31 0000005272 us-gaap:ShortTermInvestmentsMember 2018-12-31 0000005272 aig:OtherMortgagesMember 2019-09-30 0000005272 us-gaap:FixedMaturitiesMember us-gaap:MortgageBackedSecuritiesMember 2019-09-30 0000005272 aig:NorthAmericanCommercialInsuranceMember 2019-01-01 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:CreditRiskContractMember 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:FairValueInputsLevel3Member 2018-12-31 0000005272 us-gaap:USTreasuryAndGovernmentMember aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember us-gaap:MaturityOvernightAndOnDemandMember 2018-12-31 0000005272 aig:Maturity31To90DaysMember aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember us-gaap:CorporateDebtSecuritiesMember 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:FairValueInputsLevel1Member 2018-12-31 0000005272 us-gaap:DerivativeFinancialInstrumentsLiabilitiesMember aig:NetRealizedCapitalGainsLossesMember 2018-01-01 2018-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member us-gaap:CorporateDebtSecuritiesMember 2018-12-31 0000005272 us-gaap:NondesignatedMember us-gaap:CreditRiskContractMember 2018-12-31 0000005272 us-gaap:OperatingSegmentsMember aig:GeneralInsuranceMember aig:NorthAmericaOperatingSegmentMember 2018-01-01 2018-09-30 0000005272 us-gaap:CarryingReportedAmountFairValueDisclosureMember 2018-12-31 0000005272 aig:MeasurementInputYieldMember aig:CertainCollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember srt:WeightedAverageMember 2018-12-31 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:USTreasuryAndGovernmentMember 2019-09-30 0000005272 us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueInputsLevel2Member 2019-09-30 0000005272 aig:RealEstateAndInvestmentFundsMember 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CommercialMortgageBackedSecuritiesMember 2019-09-30 0000005272 us-gaap:ForeignExchangeContractMember us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000005272 aig:BondsTradingSecuritiesMember us-gaap:CorporateDebtSecuritiesMember 2018-01-01 2018-09-30 0000005272 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:ForeignExchangeContractMember 2018-12-31 0000005272 aig:CommercialMortgageMember aig:CommercialMortgageCreditQualityIndicatorRangeOneMember aig:DebtServiceCoverageRatioRangeThreeMember 2018-12-31 0000005272 aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember aig:BondsAvailableForSaleSecuritiesMember us-gaap:AccumulatedOtherThanTemporaryImpairmentMember 2019-09-30 0000005272 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember 2018-12-31 0000005272 us-gaap:NondesignatedMember aig:PolicyholderBenefitsAndClaimsIncurredMember 2018-01-01 2018-09-30 0000005272 aig:MeasurementInputYieldMember srt:MaximumMember us-gaap:USStatesAndPoliticalSubdivisionsMember 2018-12-31 0000005272 us-gaap:NondesignatedMember aig:PolicyFeesMember 2018-01-01 2018-09-30 0000005272 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2019-01-01 2019-09-30 0000005272 us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2019-09-30 0000005272 us-gaap:CreditIndexProductMember srt:MaximumMember us-gaap:MeasurementInputLapseRateMember 2019-09-30 0000005272 us-gaap:AccumulatedOtherThanTemporaryImpairmentMember 2018-12-31 0000005272 aig:MeasurementInputYieldMember us-gaap:USStatesAndPoliticalSubdivisionsMember srt:WeightedAverageMember 2018-12-31 0000005272 aig:NorthAmericanCommercialInsuranceMember 2019-09-30 0000005272 aig:IndexLifeMember srt:MinimumMember aig:MeasurementInputBaseLapseRatesMember 2018-12-31 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:SecuredFinancingsMember us-gaap:ForeignGovernmentDebtSecuritiesMember aig:Maturity365DaysorGreaterMember 2019-09-30 0000005272 us-gaap:OtherContractMember us-gaap:NondesignatedMember 2018-12-31 0000005272 aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:MaturityOvernightAndOnDemandMember 2018-12-31 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:SecuredFinancingsMember us-gaap:ForeignGovernmentDebtSecuritiesMember 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:ForeignGovernmentDebtSecuritiesMember 2019-09-30 0000005272 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2019-01-01 2019-09-30 0000005272 aig:HedgeFundsMacroValueMember 2019-09-30 0000005272 us-gaap:HedgeFundsMember 2019-09-30 0000005272 us-gaap:TreasuryStockMember 2018-09-30 0000005272 aig:IndexLifeMember us-gaap:FairValueInputsLevel3Member aig:DiscountedCashflowValuationTechniqueMember 2019-09-30 0000005272 us-gaap:HedgeFundsMember 2018-12-31 0000005272 aig:SecuredFinancingsMember 2019-09-30 0000005272 aig:SecuredFinancingsMember us-gaap:FixedMaturitiesMember 2019-09-30 0000005272 aig:MeasurementInputYieldMember srt:WeightedAverageMember us-gaap:CorporateDebtSecuritiesMember 2019-09-30 0000005272 us-gaap:IntersegmentEliminationMember 2018-01-01 2018-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:OtherContractMember 2018-12-31 0000005272 aig:ValidusHoldingsLtdMember 2018-07-18 2018-07-18 0000005272 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:ForeignGovernmentDebtSecuritiesMember 2018-12-31 0000005272 aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember us-gaap:CorporateDebtSecuritiesMember aig:Maturity365DaysorGreaterMember 2019-09-30 0000005272 srt:MinimumMember aig:MeasurementInputYieldMember us-gaap:CorporateDebtSecuritiesMember 2019-09-30 0000005272 aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember us-gaap:FairValueMeasurementsRecurringMember 2018-12-31 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:OtherContractMember 2018-12-31 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:SecuredFinancingsMember us-gaap:CorporateDebtSecuritiesMember 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:CommercialMortgageBackedSecuritiesMember 2018-12-31 0000005272 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2018-01-01 2018-09-30 0000005272 us-gaap:HedgeFundsEquityLongShortMember 2018-12-31 0000005272 aig:SecuredFinancingsMember us-gaap:MaturityUpTo30DaysMember 2018-12-31 0000005272 us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:MeasurementInputLossSeverityMember srt:WeightedAverageMember 2019-09-30 0000005272 aig:LegacyPropertyAndCasualtyRunOffInsuranceLinesMember 2019-09-30 0000005272 aig:RealEstateAndInfrastructurePrivateEquityFundsMember 2018-12-31 0000005272 us-gaap:PrivateEquityFundsMember 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:CommercialMortgageBackedSecuritiesMember 2018-09-30 0000005272 aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:MaturityUpTo30DaysMember 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:SecuredFinancingsMember us-gaap:CorporateDebtSecuritiesMember us-gaap:MaturityOvernightAndOnDemandMember 2019-09-30 0000005272 us-gaap:CommonStockMember 2019-01-01 2019-09-30 0000005272 aig:CommercialMortgageMember aig:CommercialMortgageCreditQualityIndicatorRangeOneMember aig:DebtServiceCoverageRatioRangeThreeMember 2019-09-30 0000005272 aig:CommercialMortgageMember aig:CommercialMortgageCreditQualityIndicatorRangeOneMember aig:DebtServiceCoverageRatioRangeTotalMember 2019-09-30 0000005272 us-gaap:CommonStockMember 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2018-09-30 0000005272 us-gaap:EquityContractMember 2018-09-30 0000005272 aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember us-gaap:ForeignGovernmentDebtSecuritiesMember aig:Maturity91To364DaysMember 2018-12-31 0000005272 us-gaap:NondesignatedMember us-gaap:EquityContractMember 2019-01-01 2019-09-30 0000005272 us-gaap:FixedMaturitiesMember 2019-09-30 0000005272 aig:CommercialMortgageMember aig:DebtServiceCoverageRatioRangeOneMember aig:CommercialMortgageCreditQualityIndicatorRangeTwoMember 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignGovernmentDebtSecuritiesMember 2019-09-30 0000005272 aig:CommercialHotelFinancingReceivableMember 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:SecuredFinancingsMember us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:MaturityOvernightAndOnDemandMember 2018-12-31 0000005272 us-gaap:ResidentialMortgageBackedSecuritiesMember srt:MaximumMember us-gaap:MeasurementInputLossSeverityMember 2018-12-31 0000005272 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsNonrecurringMember aig:AlternativeFundsMember 2019-09-30 0000005272 aig:BondsTradingSecuritiesMember us-gaap:CorporateDebtSecuritiesMember 2019-01-01 2019-09-30 0000005272 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2018-09-30 0000005272 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsNonrecurringMember aig:OtherAssetsMiscellaneousMember 2018-12-31 0000005272 us-gaap:VentureCapitalFundsMember 2018-12-31 0000005272 us-gaap:InvestmentIncomeMember aig:BondsTradingSecuritiesMember 2018-01-01 2018-09-30 0000005272 us-gaap:DerivativeFinancialInstrumentsLiabilitiesMember us-gaap:InvestmentIncomeMember 2018-01-01 2018-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2018-09-30 0000005272 us-gaap:FairValueMeasurementsNonrecurringMember aig:AlternativeFundsMember us-gaap:EstimateOfFairValueFairValueDisclosureMember 2019-09-30 0000005272 us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:ForeignExchangeContractMember 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:AccumulatedOtherThanTemporaryImpairmentMember us-gaap:CommercialMortgageBackedSecuritiesMember 2019-09-30 0000005272 us-gaap:FairValueInputsLevel3Member aig:CertainCollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember aig:DiscountedCashflowValuationTechniqueMember 2018-12-31 0000005272 aig:RealEstateAndInvestmentFundsMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2018-12-31 0000005272 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2019-09-30 0000005272 srt:MaximumMember us-gaap:GuaranteedMinimumWithdrawalBenefitMember aig:MeasurementInputBaseLapseRatesMember 2018-12-31 0000005272 us-gaap:FairValueMeasurementsNonrecurringMember us-gaap:FairValueInputsLevel3Member aig:OtherAssetsMiscellaneousMember 2018-12-31 0000005272 us-gaap:InterestRateContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2019-09-30 0000005272 srt:MinimumMember aig:MeasurementInputYieldMember us-gaap:CommercialMortgageBackedSecuritiesMember 2019-09-30 0000005272 us-gaap:InterestRateContractMember us-gaap:NondesignatedMember 2019-09-30 0000005272 aig:SecuredFinancingsMember us-gaap:MaturityOvernightAndOnDemandMember 2019-09-30 0000005272 us-gaap:OtherContractMember us-gaap:NondesignatedMember 2019-09-30 0000005272 aig:OtherHedgeFundsMember 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:AccumulatedOtherThanTemporaryImpairmentMember 2018-12-31 0000005272 aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember us-gaap:CorporateDebtSecuritiesMember aig:Maturity91To364DaysMember 2019-09-30 0000005272 us-gaap:OtherIncomeMember aig:BondsAvailableForSaleSecuritiesMember 2018-01-01 2018-09-30 0000005272 country:GB 2018-01-01 2018-12-31 0000005272 us-gaap:NoncontrollingInterestMember 2018-09-30 0000005272 us-gaap:FixedMaturitiesMember us-gaap:MortgageBackedSecuritiesMember 2018-12-31 0000005272 us-gaap:AdditionalPaidInCapitalMember 2019-01-01 2019-09-30 0000005272 aig:CreditRiskRelatedContingentFeaturesMember 2018-12-31 0000005272 us-gaap:USTreasuryAndGovernmentMember us-gaap:FixedMaturitiesMember 2018-12-31 0000005272 aig:IndexLifeMember srt:MaximumMember aig:MeasurementInputBaseLapseRatesMember 2018-12-31 0000005272 aig:OtherSubsidiariesMember 2019-09-30 0000005272 us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember 2019-09-30 0000005272 aig:MeasurementInputYieldMember srt:MaximumMember us-gaap:CorporateDebtSecuritiesMember 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:SecuredFinancingsMember us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:MaturityUpTo30DaysMember 2018-12-31 0000005272 us-gaap:ResidentialMortgageBackedSecuritiesMember aig:MeasurementInputYieldMember srt:WeightedAverageMember 2019-09-30 0000005272 us-gaap:DerivativeFinancialInstrumentsLiabilitiesMember 2018-06-30 0000005272 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2018-09-30 0000005272 us-gaap:DerivativeFinancialInstrumentsLiabilitiesMember aig:NetRealizedCapitalGainsLossesMember 2019-01-01 2019-09-30 0000005272 aig:OtherMortgagesMember 2018-01-01 2018-09-30 0000005272 aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember us-gaap:CorporateDebtSecuritiesMember us-gaap:MaturityUpTo30DaysMember 2018-12-31 0000005272 aig:BondsTradingSecuritiesMember us-gaap:CorporateDebtSecuritiesMember 2018-09-30 0000005272 us-gaap:NondesignatedMember us-gaap:OtherIncomeMember 2018-01-01 2018-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:AccumulatedOtherThanTemporaryImpairmentMember 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:CommercialMortgageBackedSecuritiesMember 2018-06-30 0000005272 aig:BondsTradingSecuritiesMember aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2018-09-30 0000005272 us-gaap:FederalHomeLoanBankCertificatesAndObligationsFHLBMember 2018-12-31 0000005272 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:ForeignGovernmentDebtSecuritiesMember 2019-09-30 0000005272 us-gaap:CarryingReportedAmountFairValueDisclosureMember 2019-09-30 0000005272 us-gaap:NondesignatedMember us-gaap:CreditRiskContractMember 2019-01-01 2019-09-30 0000005272 us-gaap:RetainedEarningsMember 2018-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:SecuredFinancingsMember us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:MaturityOvernightAndOnDemandMember 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:NetRealizedCapitalGainsLossesMember 2018-01-01 2018-09-30 0000005272 us-gaap:FairValueInputsLevel3Member aig:DiscountedCashflowValuationTechniqueMember us-gaap:CorporateDebtSecuritiesMember 2018-12-31 0000005272 us-gaap:FairValueInputsLevel3Member aig:DiscountedCashflowValuationTechniqueMember us-gaap:CorporateDebtSecuritiesMember 2019-09-30 0000005272 aig:Maturity365DaysorGreaterMember 2018-12-31 0000005272 us-gaap:SeriesAPreferredStockMember 2019-03-14 2019-03-14 0000005272 aig:CommercialMortgageMember aig:DebtServiceCoverageRatioRangeThreeMember aig:CommercialMortgageCreditQualityIndicatorRangeTwoMember 2018-12-31 0000005272 aig:Maturity31To90DaysMember 2018-12-31 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:AccumulatedOtherThanTemporaryImpairmentMember 2019-09-30 0000005272 srt:MinimumMember us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:MeasurementInputLossSeverityMember 2019-09-30 0000005272 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsNonrecurringMember aig:AlternativeFundsMember 2019-09-30 0000005272 us-gaap:NoncontrollingInterestMember 2019-01-01 2019-09-30 0000005272 us-gaap:PreferredStockIncludingAdditionalPaidInCapitalMember 2019-01-01 2019-09-30 0000005272 us-gaap:NondesignatedMember us-gaap:CreditRiskContractMember 2018-01-01 2018-09-30 0000005272 aig:LegacyPortfolioMember 2018-01-01 2018-09-30 0000005272 us-gaap:HedgeFundsEventDrivenMember 2018-12-31 0000005272 srt:MinimumMember us-gaap:ResidentialMortgageBackedSecuritiesMember aig:MeasurementInputConstantDefaultRateMember 2018-12-31 0000005272 aig:CommercialMortgageMember 2018-12-31 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:AccumulatedOtherThanTemporaryImpairmentMember 2018-12-31 0000005272 aig:Maturity31To90DaysMember aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember us-gaap:CorporateDebtSecuritiesMember 2018-12-31 0000005272 us-gaap:NoncontrollingInterestMember 2018-12-31 0000005272 us-gaap:USTreasuryAndGovernmentMember aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember aig:Maturity365DaysorGreaterMember 2019-09-30 0000005272 aig:MeasurementInputYieldMember us-gaap:CommercialMortgageBackedSecuritiesMember srt:WeightedAverageMember 2019-09-30 0000005272 us-gaap:USTreasuryAndGovernmentMember 2019-01-01 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignExchangeContractMember 2018-12-31 0000005272 us-gaap:ForeignExchangeContractMember 2018-06-30 0000005272 aig:CommercialMortgageMember aig:DebtServiceCoverageRatioRangeOneMember aig:CommercialMortgageCreditQualityIndicatorRangeThreeMember 2019-09-30 0000005272 aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:USTreasuryAndGovernmentMember 2018-12-31 0000005272 aig:BondsAvailableForSaleSecuritiesMember 2018-09-30 0000005272 aig:BondsTradingSecuritiesMember aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2018-06-30 0000005272 aig:CommercialMortgageMember aig:DebtServiceCoverageRatioRangeTwoMember aig:CommercialMortgageCreditQualityIndicatorRangeFourMember 2019-09-30 0000005272 aig:MeasurementInputYieldMember aig:CertainCollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember srt:WeightedAverageMember 2019-09-30 0000005272 us-gaap:AdditionalPaidInCapitalMember 2018-12-31 0000005272 us-gaap:FixedMaturitiesMember us-gaap:CorporateDebtSecuritiesMember 2018-12-31 0000005272 us-gaap:NondesignatedMember us-gaap:InvestmentIncomeMember 2018-01-01 2018-09-30 0000005272 srt:MinimumMember us-gaap:GuaranteedMinimumWithdrawalBenefitMember aig:MeasurementInputBaseLapseRatesMember 2019-09-30 0000005272 2019-01-01 0000005272 aig:AIGLifeHoldingsUSIncMember 2018-09-30 0000005272 aig:Maturity31To90DaysMember aig:SecuredFinancingsMember aig:BondsAvailableForSaleSecuritiesMember us-gaap:USStatesAndPoliticalSubdivisionsMember 2018-12-31 0000005272 us-gaap:InterestRateContractMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2019-09-30 0000005272 us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:FairValueHedgingMember us-gaap:InterestRateContractMember us-gaap:InvestmentIncomeMember 2018-01-01 2018-09-30 0000005272 aig:OtherSubsidiariesMember us-gaap:ShortTermInvestmentsMember 2019-09-30 0000005272 aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember us-gaap:ForeignGovernmentDebtSecuritiesMember aig:Maturity365DaysorGreaterMember 2019-09-30 0000005272 aig:DepositarySharesMember 2019-03-14 2019-03-14 0000005272 us-gaap:ResidentialMortgageBackedSecuritiesMember aig:MeasurementInputYieldMember srt:MaximumMember 2018-12-31 0000005272 aig:OtherSubsidiariesMember us-gaap:OtherAssetsMember 2018-12-31 0000005272 us-gaap:CreditRiskContractMember 2019-01-01 2019-09-30 0000005272 us-gaap:MeasurementInputMortalityRateMember aig:IndexLifeMember srt:MaximumMember 2019-09-30 0000005272 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:EquityContractMember 2019-09-30 0000005272 aig:CommercialMortgageMember aig:CommercialMortgageCreditQualityIndicatorTotalMember aig:DebtServiceCoverageRatioRangeTotalMember 2018-12-31 0000005272 us-gaap:FairValueMeasurementsNonrecurringMember us-gaap:EstimateOfFairValueFairValueDisclosureMember aig:OtherAssetsMiscellaneousMember 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:Maturity31To90DaysMember aig:SecuredFinancingsMember us-gaap:ForeignGovernmentDebtSecuritiesMember 2018-12-31 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignGovernmentDebtSecuritiesMember 2018-12-31 0000005272 us-gaap:FairValueInputsLevel3Member us-gaap:GuaranteedMinimumWithdrawalBenefitMember aig:DiscountedCashflowValuationTechniqueMember 2018-12-31 0000005272 aig:PolicyholderContractDepositsMember 2018-06-30 0000005272 us-gaap:FairValueInputsLevel3Member us-gaap:CreditIndexProductMember aig:DiscountedCashflowValuationTechniqueMember 2018-12-31 0000005272 us-gaap:InterestRateContractMember us-gaap:NondesignatedMember 2019-01-01 2019-09-30 0000005272 us-gaap:NondesignatedMember us-gaap:EquityContractMember 2018-01-01 2018-09-30 0000005272 aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember us-gaap:CorporateDebtSecuritiesMember aig:Maturity365DaysorGreaterMember 2018-12-31 0000005272 srt:MaximumMember us-gaap:GuaranteedMinimumWithdrawalBenefitMember aig:MeasurementInputEquityVolatilityMember 2019-09-30 0000005272 aig:LifeAndRetirementMember us-gaap:OperatingSegmentsMember us-gaap:LifeInsuranceSegmentMember 2019-01-01 2019-09-30 0000005272 aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember us-gaap:ForeignGovernmentDebtSecuritiesMember aig:Maturity365DaysorGreaterMember 2018-12-31 0000005272 aig:ValidusHoldingsLtdMember 2018-09-30 0000005272 us-gaap:ForeignExchangeContractMember us-gaap:FairValueMeasurementsRecurringMember 2018-12-31 0000005272 us-gaap:OperatingSegmentsMember aig:GeneralInsuranceMember aig:NorthAmericaOperatingSegmentMember 2019-01-01 2019-09-30 0000005272 aig:SecuredFinancingsMember us-gaap:MaturityOvernightAndOnDemandMember 2018-12-31 0000005272 srt:ConsolidationEliminationsMember us-gaap:OtherAssetsMember 2018-09-30 0000005272 aig:CommercialMortgageMember aig:CommercialMortgageCreditQualityIndicatorRangeFourMember aig:DebtServiceCoverageRatioRangeThreeMember 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:CommercialMortgageBackedSecuritiesMember 2019-09-30 0000005272 us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:MeasurementInputLossSeverityMember srt:WeightedAverageMember 2018-12-31 0000005272 aig:SecuredFinancingsMember aig:BondsAvailableForSaleSecuritiesMember us-gaap:USStatesAndPoliticalSubdivisionsMember 2018-12-31 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2018-12-31 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CreditRiskContractMember 2018-12-31 0000005272 aig:BondsTradingSecuritiesMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2018-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2018-06-30 0000005272 aig:MortgageAndOtherLoansReceivableMember 2018-09-30 0000005272 us-gaap:NondesignatedMember us-gaap:EmbeddedDerivativeFinancialInstrumentsMember 2018-01-01 2018-09-30 0000005272 us-gaap:ShortTermInvestmentsMember 2019-09-30 0000005272 us-gaap:CreditRiskContractMember 2018-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:AccumulatedOtherThanTemporaryImpairmentMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2018-12-31 0000005272 us-gaap:MaturityOvernightAndOnDemandMember 2018-12-31 0000005272 aig:RealEstateAndInfrastructurePrivateEquityFundsMember 2019-09-30 0000005272 aig:CommercialMortgageMember aig:DebtServiceCoverageRatioRangeTwoMember aig:CommercialMortgageCreditQualityIndicatorRangeTwoMember 2018-12-31 0000005272 us-gaap:PrivateEquityFundsMember 2018-12-31 0000005272 us-gaap:FixedMaturitiesMember us-gaap:ForeignGovernmentDebtSecuritiesMember 2019-09-30 0000005272 us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CommercialMortgageBackedSecuritiesMember 2018-12-31 0000005272 aig:LifeAndRetirementMember us-gaap:OperatingSegmentsMember us-gaap:LifeInsuranceSegmentMember 2018-01-01 2018-09-30 0000005272 2019-02-13 0000005272 us-gaap:AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember 2018-09-30 0000005272 aig:FairValueOptionElectionMember 2019-09-30 0000005272 us-gaap:ShortTermInvestmentsMember 2018-09-30 0000005272 us-gaap:OperatingSegmentsMember aig:GeneralInsuranceMember 2018-01-01 2018-09-30 0000005272 aig:SecuredFinancingsMember aig:BondsAvailableForSaleSecuritiesMember aig:Maturity365DaysorGreaterMember us-gaap:USStatesAndPoliticalSubdivisionsMember 2019-09-30 0000005272 us-gaap:NondesignatedMember us-gaap:EmbeddedDerivativeFinancialInstrumentsMember 2019-01-01 2019-09-30 0000005272 us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:FairValueHedgingMember us-gaap:InterestRateContractMember us-gaap:InvestmentIncomeMember 2019-01-01 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CorporateDebtSecuritiesMember 2019-09-30 0000005272 aig:OtherSubsidiariesMember us-gaap:OtherAssetsMember 2019-09-30 0000005272 aig:ValidusHoldingsLtdMember us-gaap:ShortTermInvestmentsMember 2018-09-30 0000005272 aig:OtherSubsidiariesMember us-gaap:OtherAssetsMember 2018-09-30 0000005272 us-gaap:CommonStockMember 2019-01-01 2019-09-30 0000005272 aig:JuniorSubordinatedDebentures4875PercentSeriesA3Member 2019-01-01 2019-09-30 0000005272 us-gaap:NoncumulativePreferredStockMember 2019-01-01 2019-09-30 0000005272 2018-07-01 2018-09-30 0000005272 2019-07-01 2019-09-30 0000005272 2018-03-29 2018-03-29 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:NetRealizedCapitalGainsLossesMember 2019-01-01 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:InterestRateContractMember 2019-09-30 0000005272 us-gaap:OperatingSegmentsMember aig:GeneralInsuranceMember 2019-01-01 2019-09-30 0000005272 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsNonrecurringMember aig:FairValueAssetsImpairmentChargesMeasuredOnNonrecurringBasisDomain 2019-09-30 0000005272 aig:CommercialMortgageMember aig:DebtServiceCoverageRatioRangeOneMember aig:CommercialMortgageCreditQualityIndicatorRangeFourMember 2019-09-30 0000005272 us-gaap:EquityContractMember 2018-06-30 0000005272 aig:BondsTradingSecuritiesMember us-gaap:CorporateDebtSecuritiesMember 2018-06-30 0000005272 aig:BondsTradingSecuritiesMember 2018-06-30 0000005272 srt:MinimumMember us-gaap:GuaranteedMinimumWithdrawalBenefitMember us-gaap:MeasurementInputUtilizationRateMember 2018-12-31 0000005272 aig:MezzanineTranchesMember 2018-12-31 0000005272 us-gaap:InterestRateContractMember 2018-06-30 0000005272 aig:LiabilitiesMember 2018-09-30 0000005272 srt:ParentCompanyMember us-gaap:ShortTermInvestmentsMember 2018-12-31 0000005272 aig:MeasurementInputYieldMember srt:MaximumMember us-gaap:CorporateDebtSecuritiesMember 2018-12-31 0000005272 aig:GrowthEquityMember 2019-09-30 0000005272 us-gaap:USTreasuryAndGovernmentMember aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:USStatesAndPoliticalSubdivisionsMember 2018-12-31 0000005272 srt:ParentCompanyMember us-gaap:OtherAssetsMember 2019-09-30 0000005272 aig:MezzanineTranchesMember 2019-09-30 0000005272 us-gaap:AdditionalPaidInCapitalMember 2019-06-30 0000005272 us-gaap:PreferredStockIncludingAdditionalPaidInCapitalMember 2019-07-01 2019-09-30 0000005272 us-gaap:CommonStockMember 2019-07-01 2019-09-30 0000005272 us-gaap:TreasuryStockMember 2019-07-01 2019-09-30 0000005272 us-gaap:AdditionalPaidInCapitalMember 2019-07-01 2019-09-30 0000005272 us-gaap:RetainedEarningsMember 2019-07-01 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:ForeignGovernmentDebtSecuritiesMember 2019-07-01 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2019-06-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2019-07-01 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:CommercialMortgageBackedSecuritiesMember 2019-06-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2019-07-01 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember 2019-06-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember 2019-07-01 2019-09-30 0000005272 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2019-07-01 2019-09-30 0000005272 us-gaap:CorporateDebtSecuritiesMember aig:BondsTradingSecuritiesMember 2019-09-30 0000005272 us-gaap:ResidentialMortgageBackedSecuritiesMember aig:BondsTradingSecuritiesMember 2019-07-01 2019-09-30 0000005272 us-gaap:CommercialMortgageBackedSecuritiesMember aig:BondsTradingSecuritiesMember 2019-09-30 0000005272 aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember aig:BondsTradingSecuritiesMember 2019-07-01 2019-09-30 0000005272 aig:BondsTradingSecuritiesMember 2019-07-01 2019-09-30 0000005272 us-gaap:ParentMember 2019-07-01 2019-09-30 0000005272 us-gaap:NoncontrollingInterestMember 2019-07-01 2019-09-30 0000005272 aig:MortgageAndOtherLoansReceivableMember 2019-07-01 2019-09-30 0000005272 us-gaap:USTreasuryAndGovernmentMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2019-09-30 0000005272 us-gaap:CorporateAndOtherMember 2018-01-01 2018-09-30 0000005272 2019-03-29 2019-03-29 0000005272 us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:FairValueInputsLevel3Member aig:DiscountedCashflowValuationTechniqueMember 2019-09-30 0000005272 aig:BondsTradingSecuritiesMember us-gaap:InvestmentIncomeMember 2019-01-01 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:AccumulatedOtherThanTemporaryImpairmentMember us-gaap:MortgageBackedSecuritiesMember 2019-09-30 0000005272 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsNonrecurringMember aig:AlternativeFundsMember 2018-12-31 0000005272 us-gaap:FixedMaturitiesMember us-gaap:ForeignGovernmentDebtSecuritiesMember 2018-12-31 0000005272 aig:OtherInvestedAssetsMember 2019-07-01 2019-09-30 0000005272 us-gaap:OtherAssetsMember 2019-07-01 2019-09-30 0000005272 aig:PolicyholderContractDepositsMember 2019-07-01 2019-09-30 0000005272 us-gaap:InterestRateContractMember 2019-07-01 2019-09-30 0000005272 us-gaap:ForeignExchangeContractMember 2019-09-30 0000005272 us-gaap:EquityContractMember 2019-07-01 2019-09-30 0000005272 us-gaap:CreditRiskContractMember 2019-09-30 0000005272 us-gaap:OtherContractMember 2019-07-01 2019-09-30 0000005272 us-gaap:DerivativeFinancialInstrumentsLiabilitiesMember 2019-09-30 0000005272 aig:LiabilitiesMember 2019-07-01 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:CommercialMortgageBackedSecuritiesMember 2018-07-01 2018-09-30 0000005272 aig:PolicyholderContractDepositsMember 2018-07-01 2018-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:USStatesAndPoliticalSubdivisionsMember 2018-07-01 2018-09-30 0000005272 us-gaap:CreditRiskContractMember 2018-07-01 2018-09-30 0000005272 us-gaap:EquityContractMember 2018-07-01 2018-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:CorporateDebtSecuritiesMember 2018-07-01 2018-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2018-07-01 2018-09-30 0000005272 us-gaap:OtherContractMember 2018-07-01 2018-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember 2018-07-01 2018-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2018-07-01 2018-09-30 0000005272 us-gaap:InterestRateContractMember 2018-07-01 2018-09-30 0000005272 aig:ValidusHoldingsLtdMember 2018-01-01 2018-09-30 0000005272 aig:AlternativeFundsMember 2019-01-01 2019-09-30 0000005272 us-gaap:FairValueInputsLevel3Member us-gaap:USStatesAndPoliticalSubdivisionsMember aig:DiscountedCashflowValuationTechniqueMember 2019-09-30 0000005272 aig:CommercialMortgageMember aig:DebtServiceCoverageRatioRangeTwoMember aig:CommercialMortgageCreditQualityIndicatorRangeThreeMember 2018-12-31 0000005272 aig:SecuredFinancingsMember aig:BondsAvailableForSaleSecuritiesMember us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:MaturityOvernightAndOnDemandMember 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member us-gaap:EquityContractMember 2018-12-31 0000005272 aig:SecuredFinancingsMember aig:Maturity91To364DaysMember 2018-12-31 0000005272 aig:CommercialMortgageMember aig:CommercialMortgageCreditQualityIndicatorRangeOneMember aig:DebtServiceCoverageRatioRangeOneMember 2019-09-30 0000005272 us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember 2019-01-01 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:CorporateDebtSecuritiesMember 2018-06-30 0000005272 aig:Maturity31To90DaysMember aig:SecuredFinancingsMember 2019-09-30 0000005272 aig:PurchasedCreditImpairedSecuritiesMember 2018-12-31 0000005272 aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember us-gaap:CorporateDebtSecuritiesMember 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:AccumulatedOtherThanTemporaryImpairmentMember us-gaap:CommercialMortgageBackedSecuritiesMember 2018-12-31 0000005272 aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember us-gaap:ForeignGovernmentDebtSecuritiesMember 2018-12-31 0000005272 us-gaap:CorporateAndOtherMember 2019-01-01 2019-09-30 0000005272 aig:CommercialLoansOtherLoansAndNotesReceivableMember 2019-09-30 0000005272 aig:LifeAndRetirementMember us-gaap:OperatingSegmentsMember aig:InstitutionalMarketsMember 2018-01-01 2018-09-30 0000005272 aig:LifeAndRetirementMember us-gaap:OperatingSegmentsMember 2019-01-01 2019-09-30 0000005272 us-gaap:OperatingSegmentsMember aig:GeneralInsuranceMember aig:InternationalOperatingSegmentMember 2019-01-01 2019-09-30 0000005272 aig:OperatingSegmentsCorporateAndOtherEliminationsMember 2019-01-01 2019-09-30 0000005272 us-gaap:FixedMaturitiesMember 2019-06-30 0000005272 aig:LiabilitiesMember 2018-07-01 2018-09-30 0000005272 aig:OtherInvestedAssetsMember 2018-07-01 2018-09-30 0000005272 aig:MortgageAndOtherLoansReceivableMember 2018-07-01 2018-09-30 0000005272 us-gaap:ResidentialMortgageBackedSecuritiesMember aig:BondsTradingSecuritiesMember 2018-12-31 0000005272 aig:GeneralInsuranceMember aig:NorthAmericaOperatingSegmentMember us-gaap:OperatingSegmentsMember 2018-07-01 2018-09-30 0000005272 aig:GeneralInsuranceMember aig:InternationalOperatingSegmentMember us-gaap:OperatingSegmentsMember 2018-07-01 2018-09-30 0000005272 aig:LifeAndRetirementMember us-gaap:OperatingSegmentsMember us-gaap:LifeInsuranceSegmentMember 2018-07-01 2018-09-30 0000005272 aig:LifeAndRetirementMember aig:IndividualRetirementSegmentMember us-gaap:OperatingSegmentsMember 2018-07-01 2018-09-30 0000005272 aig:OperatingSegmentsCorporateAndOtherEliminationsMember 2018-07-01 2018-09-30 0000005272 us-gaap:OperatingIncomeLossMember us-gaap:MaterialReconcilingItemsMember 2019-07-01 2019-09-30 0000005272 us-gaap:MaterialReconcilingItemsMember aig:RevenueMember 2019-07-01 2019-09-30 0000005272 us-gaap:MaterialReconcilingItemsMember aig:RevenueMember 2018-07-01 2018-09-30 0000005272 aig:ValidusHoldingsLtdMember 2019-07-01 2019-09-30 0000005272 us-gaap:OtherIncomeMember aig:BondsTradingSecuritiesMember 2019-07-01 2019-09-30 0000005272 aig:OtherInvestedAssetsMember aig:NetRealizedCapitalGainsLossesMember 2018-07-01 2018-09-30 0000005272 us-gaap:InvestmentIncomeMember aig:PolicyholderContractDepositsMember 2019-07-01 2019-09-30 0000005272 aig:PolicyholderContractDepositsMember aig:NetRealizedCapitalGainsLossesMember 2018-07-01 2018-09-30 0000005272 us-gaap:CommercialMortgageBackedSecuritiesMember aig:BondsTradingSecuritiesMember 2019-07-01 2019-09-30 0000005272 us-gaap:USTreasuryAndGovernmentMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member 2018-12-31 0000005272 us-gaap:TreasuryStockMember 2018-12-31 0000005272 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember 2018-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:USTreasuryAndGovernmentMember us-gaap:AccumulatedOtherThanTemporaryImpairmentMember 2019-09-30 0000005272 us-gaap:MeasurementInputConstantPrepaymentRateMember us-gaap:ResidentialMortgageBackedSecuritiesMember srt:MaximumMember 2018-12-31 0000005272 us-gaap:InvestmentIncomeMember aig:PolicyholderContractDepositsMember 2018-01-01 2018-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:CreditRiskContractMember 2018-12-31 0000005272 aig:AIGLifeHoldingsUSIncMember us-gaap:ShortTermInvestmentsMember 2018-09-30 0000005272 aig:OtherSubsidiariesMember us-gaap:ShortTermInvestmentsMember 2018-09-30 0000005272 us-gaap:ParentMember 2019-01-01 2019-09-30 0000005272 us-gaap:RetainedEarningsMember 2019-01-01 2019-09-30 0000005272 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2019-01-01 2019-09-30 0000005272 aig:MeasurementInputYieldMember srt:WeightedAverageMember us-gaap:CorporateDebtSecuritiesMember 2018-12-31 0000005272 us-gaap:ResidentialMortgageBackedSecuritiesMember srt:WeightedAverageMember aig:MeasurementInputConstantDefaultRateMember 2018-12-31 0000005272 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsNonrecurringMember aig:FairValueAssetsImpairmentChargesMeasuredOnNonrecurringBasisDomain 2018-12-31 0000005272 us-gaap:OtherContractMember us-gaap:NondesignatedMember 2019-01-01 2019-09-30 0000005272 us-gaap:NondesignatedMember us-gaap:OtherIncomeMember 2019-01-01 2019-09-30 0000005272 us-gaap:ResidentialMortgageBackedSecuritiesMember srt:MaximumMember aig:MeasurementInputConstantDefaultRateMember 2019-09-30 0000005272 us-gaap:CreditRiskContractMember 2018-06-30 0000005272 us-gaap:FairValueMeasurementsNonrecurringMember aig:FairValueAssetsImpairmentChargesMeasuredOnNonrecurringBasisDomain us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000005272 us-gaap:NondesignatedMember aig:PolicyFeesMember 2019-01-01 2019-09-30 0000005272 aig:MeasurementInputYieldMember us-gaap:CommercialMortgageBackedSecuritiesMember srt:WeightedAverageMember 2018-12-31 0000005272 srt:MaximumMember us-gaap:GuaranteedMinimumWithdrawalBenefitMember aig:MeasurementInputBaseLapseRatesMember 2019-09-30 0000005272 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2019-09-30 0000005272 us-gaap:USStatesAndPoliticalSubdivisionsMember aig:BondsAvailableForSaleSecuritiesMember 2019-07-01 2019-09-30 0000005272 us-gaap:CorporateDebtSecuritiesMember aig:BondsAvailableForSaleSecuritiesMember 2019-07-01 2019-09-30 0000005272 aig:BondsTradingSecuritiesMember 2018-07-01 2018-09-30 0000005272 us-gaap:ResidentialMortgageBackedSecuritiesMember aig:BondsTradingSecuritiesMember 2018-07-01 2018-09-30 0000005272 us-gaap:ForeignGovernmentDebtSecuritiesMember aig:BondsAvailableForSaleSecuritiesMember 2018-07-01 2018-09-30 0000005272 us-gaap:FixedMaturitiesMember 2019-07-01 2019-09-30 0000005272 us-gaap:FixedMaturitiesMember 2018-07-01 2018-09-30 0000005272 aig:PurchasedCreditImpairedSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2018-07-01 2018-09-30 0000005272 aig:CommercialMortgageMember 2017-12-31 0000005272 us-gaap:ResidentialMortgageBackedSecuritiesMember aig:BondsTradingSecuritiesMember 2017-12-31 0000005272 aig:PolicyholderContractDepositsMember 2017-12-31 0000005272 us-gaap:NondesignatedMember aig:PolicyholderBenefitsAndClaimsIncurredMember 2018-07-01 2018-09-30 0000005272 us-gaap:NondesignatedMember us-gaap:CreditRiskContractMember 2018-07-01 2018-09-30 0000005272 us-gaap:NondesignatedMember us-gaap:EmbeddedDerivativeFinancialInstrumentsMember 2019-07-01 2019-09-30 0000005272 aig:Maturity31To90DaysMember us-gaap:USTreasuryAndGovernmentMember aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember 2019-09-30 0000005272 aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember us-gaap:CorporateDebtSecuritiesMember us-gaap:MaturityOvernightAndOnDemandMember 2019-09-30 0000005272 us-gaap:FairValueMeasurementsNonrecurringMember us-gaap:EstimateOfFairValueFairValueDisclosureMember aig:OtherAssetsMiscellaneousMember 2018-12-31 0000005272 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:CommercialMortgageBackedSecuritiesMember 2019-09-30 0000005272 aig:NetRealizedCapitalGainsLossesMember us-gaap:NondesignatedMember 2018-01-01 2018-09-30 0000005272 aig:AIGLifeHoldingsUSIncMember us-gaap:OtherAssetsMember 2018-09-30 0000005272 srt:ParentCompanyMember us-gaap:OtherAssetsMember 2018-09-30 0000005272 srt:ConsolidationEliminationsMember us-gaap:ShortTermInvestmentsMember 2018-09-30 0000005272 aig:ValidusHoldingsLtdMember us-gaap:OtherAssetsMember 2018-09-30 0000005272 us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2018-12-31 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:SecuredFinancingsMember us-gaap:CorporateDebtSecuritiesMember us-gaap:MaturityOvernightAndOnDemandMember 2018-12-31 0000005272 us-gaap:NoncontrollingInterestMember 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:SecuredFinancingsMember us-gaap:CorporateDebtSecuritiesMember aig:Maturity365DaysorGreaterMember 2019-09-30 0000005272 srt:MinimumMember aig:MeasurementInputYieldMember aig:CertainCollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2018-12-31 0000005272 us-gaap:HedgeFundsEventDrivenMember 2019-09-30 0000005272 aig:USGovernmentAgencyAssetBackSecuritiesMember 2018-12-31 0000005272 aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember us-gaap:CorporateDebtSecuritiesMember aig:Maturity91To364DaysMember 2018-12-31 0000005272 aig:CommercialMortgageMember aig:CommercialMortgageCreditQualityIndicatorRangeThreeMember aig:DebtServiceCoverageRatioRangeTotalMember 2019-09-30 0000005272 aig:LifeAndRetirementMember us-gaap:OperatingSegmentsMember aig:GroupRetirementSegmentMember 2018-01-01 2018-09-30 0000005272 us-gaap:PreferredStockIncludingAdditionalPaidInCapitalMember 2018-12-31 0000005272 aig:SecuredFinancingsMember aig:BondsAvailableForSaleSecuritiesMember aig:Maturity365DaysorGreaterMember us-gaap:USStatesAndPoliticalSubdivisionsMember 2018-12-31 0000005272 stpr:PA 2019-01-01 2019-09-30 0000005272 aig:AIGLifeHoldingsUSIncMember us-gaap:OtherAssetsMember 2019-09-30 0000005272 srt:ConsolidationEliminationsMember us-gaap:ShortTermInvestmentsMember 2019-09-30 0000005272 aig:CommercialMortgageMember aig:DebtServiceCoverageRatioRangeTwoMember aig:CommercialMortgageCreditQualityIndicatorRangeTwoMember 2019-09-30 0000005272 aig:NorthAmericanCommercialInsuranceMember 2018-07-01 2018-09-30 0000005272 aig:LegacyPropertyAndCasualtyRunOffInsuranceLinesMember 2019-07-01 2019-09-30 0000005272 aig:NorthAmericanCommercialInsuranceMember 2019-07-01 2019-09-30 0000005272 us-gaap:AccumulatedTranslationAdjustmentMember 2019-07-01 2019-09-30 0000005272 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember 2019-07-01 2019-09-30 0000005272 us-gaap:AccumulatedOtherThanTemporaryImpairmentMember 2018-07-01 2018-09-30 0000005272 us-gaap:AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember 2017-12-31 0000005272 us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2018-07-01 2018-09-30 0000005272 srt:ConsolidationEliminationsMember 2019-07-01 2019-09-30 0000005272 srt:ConsolidationEliminationsMember 2018-07-01 2018-09-30 0000005272 us-gaap:EquitySecuritiesMember 2019-07-01 2019-09-30 0000005272 us-gaap:OtherContractMember 2018-06-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:AccumulatedOtherThanTemporaryImpairmentMember 2019-09-30 0000005272 us-gaap:FairValueInputsLevel3Member us-gaap:GuaranteedMinimumWithdrawalBenefitMember aig:DiscountedCashflowValuationTechniqueMember 2019-09-30 0000005272 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember 2019-09-30 0000005272 aig:AIGLifeHoldingsUSIncMember us-gaap:ShortTermInvestmentsMember 2019-09-30 0000005272 aig:OtherPrivateEquityFundsMember 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:OtherContractMember 2019-09-30 0000005272 aig:DistressedHedgeFundsMember 2018-12-31 0000005272 us-gaap:AdditionalPaidInCapitalMember 2018-09-30 0000005272 us-gaap:AccumulatedTranslationAdjustmentMember 2019-09-30 0000005272 us-gaap:PolicyLoansMember 2019-09-30 0000005272 aig:Maturity31To90DaysMember aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember us-gaap:ForeignGovernmentDebtSecuritiesMember 2019-09-30 0000005272 us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember 2019-01-01 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CorporateDebtSecuritiesMember 2018-12-31 0000005272 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2017-12-31 0000005272 us-gaap:AccumulatedTranslationAdjustmentMember 2017-12-31 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:ForeignGovernmentDebtSecuritiesMember 2018-12-31 0000005272 srt:ConsolidationEliminationsMember us-gaap:OtherAssetsMember 2019-09-30 0000005272 aig:JuniorSubordinatedDebentures575PercentSeriesA2Member 2019-01-01 2019-09-30 0000005272 aig:CommercialMortgageMember aig:DebtServiceCoverageRatioRangeOneMember aig:CommercialMortgageCreditQualityIndicatorTotalMember 2018-12-31 0000005272 us-gaap:MaturityUpTo30DaysMember 2018-12-31 0000005272 srt:MinimumMember us-gaap:CreditIndexProductMember us-gaap:MeasurementInputLapseRateMember 2019-09-30 0000005272 us-gaap:FairValueMeasurementsNonrecurringMember us-gaap:FairValueInputsLevel3Member aig:OtherAssetsMiscellaneousMember 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:EquityContractMember 2018-12-31 0000005272 aig:CommercialMortgageMember aig:DebtServiceCoverageRatioRangeOneMember aig:CommercialMortgageCreditQualityIndicatorRangeThreeMember 2018-12-31 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:USTreasuryAndGovernmentMember us-gaap:AccumulatedOtherThanTemporaryImpairmentMember 2018-12-31 0000005272 us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:FairValueHedgingMember aig:InterestCreditedToPolicyholdersAccountBalancesMember us-gaap:InterestRateContractMember 2019-01-01 2019-09-30 0000005272 aig:Maturity91To364DaysMember 2019-09-30 0000005272 srt:MinimumMember aig:MeasurementInputYieldMember us-gaap:CorporateDebtSecuritiesMember 2018-12-31 0000005272 us-gaap:MaturityOvernightAndOnDemandMember 2019-09-30 0000005272 aig:LegacyPropertyAndCasualtyRunOffInsuranceLinesMember 2018-12-31 0000005272 aig:MeasurementInputYieldMember srt:MaximumMember us-gaap:CommercialMortgageBackedSecuritiesMember 2019-09-30 0000005272 us-gaap:OtherIncomeMember aig:PolicyholderContractDepositsMember 2019-01-01 2019-09-30 0000005272 srt:MinimumMember us-gaap:GuaranteedMinimumWithdrawalBenefitMember aig:MeasurementInputDynamicLapseMultiplierMember 2019-09-30 0000005272 aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember us-gaap:ForeignGovernmentDebtSecuritiesMember aig:Maturity91To364DaysMember 2019-09-30 0000005272 aig:MeasurementInputYieldMember srt:MaximumMember us-gaap:CommercialMortgageBackedSecuritiesMember 2018-12-31 0000005272 aig:SecuredFinancingsMember aig:BondsAvailableForSaleSecuritiesMember us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:MaturityUpTo30DaysMember 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:SecuredFinancingsMember us-gaap:ForeignGovernmentDebtSecuritiesMember aig:Maturity91To364DaysMember 2018-12-31 0000005272 us-gaap:MeasurementInputMortalityRateMember aig:IndexLifeMember srt:MaximumMember 2018-12-31 0000005272 us-gaap:PreferredStockIncludingAdditionalPaidInCapitalMember 2018-09-30 0000005272 srt:MaximumMember us-gaap:GuaranteedMinimumWithdrawalBenefitMember aig:MeasurementInputDynamicLapseMultiplierMember 2018-12-31 0000005272 us-gaap:EquitySecuritiesMember 2018-07-01 2018-09-30 0000005272 aig:InterestCreditedToPolicyholdersAccountBalancesMember us-gaap:InterestRateContractMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:FairValueHedgingMember 2019-07-01 2019-09-30 0000005272 us-gaap:InterestRateContractMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:FairValueHedgingMember us-gaap:InvestmentIncomeMember 2019-07-01 2019-09-30 0000005272 srt:ParentCompanyMember 2017-12-31 0000005272 us-gaap:FairValueMeasurementsNonrecurringMember aig:FairValueAssetsImpairmentChargesMeasuredOnNonrecurringBasisDomain 2018-07-01 2018-09-30 0000005272 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2019-07-01 2019-09-30 0000005272 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2018-07-01 2018-09-30 0000005272 aig:BondAndEquitySecuritiesMember 2018-01-01 2018-09-30 0000005272 us-gaap:ForeignGovernmentDebtSecuritiesMember 2019-07-01 2019-09-30 0000005272 us-gaap:PrivateEquityFundsMember srt:MaximumMember aig:FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareLiquidatingInvestmentRemainingPeriodCategoryTwoMember 2019-01-01 2019-09-30 0000005272 aig:ValidusHoldingsLtdMember 2019-07-01 2019-09-30 0000005272 aig:AIGLifeHoldingsUSIncMember 2019-07-01 2019-09-30 0000005272 aig:OtherSubsidiariesMember 2019-07-01 2019-09-30 0000005272 srt:ParentCompanyMember 2019-07-01 2019-09-30 0000005272 aig:OtherSubsidiariesMember 2018-07-01 2018-09-30 0000005272 srt:MinimumMember us-gaap:CreditIndexProductMember aig:MeasurementInputMortalityMultiplierMember 2018-12-31 0000005272 us-gaap:USTreasuryAndGovernmentMember aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember us-gaap:MaturityUpTo30DaysMember 2019-09-30 0000005272 aig:CommercialMortgageMember aig:DebtServiceCoverageRatioRangeTotalMember aig:CommercialMortgageCreditQualityIndicatorRangeTwoMember 2019-09-30 0000005272 aig:CommercialMortgageMember aig:DebtServiceCoverageRatioRangeOneMember aig:CommercialMortgageCreditQualityIndicatorTotalMember 2019-09-30 0000005272 aig:CommercialMortgageMember aig:CommercialMortgageCreditQualityIndicatorRangeFourMember aig:DebtServiceCoverageRatioRangeThreeMember 2018-12-31 0000005272 aig:CommercialMortgageMember aig:CommercialMortgageCreditQualityIndicatorRangeFourMember aig:DebtServiceCoverageRatioRangeTotalMember 2018-12-31 0000005272 aig:CommercialMortgageMember aig:DebtServiceCoverageRatioRangeOneMember aig:CommercialMortgageCreditQualityIndicatorRangeTwoMember 2018-12-31 0000005272 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsNonrecurringMember aig:OtherAssetsMiscellaneousMember 2019-09-30 0000005272 aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember us-gaap:CorporateDebtSecuritiesMember 2018-12-31 0000005272 aig:Maturity91To364DaysMember 2018-12-31 0000005272 us-gaap:OperatingSegmentsMember aig:GeneralInsuranceMember aig:InternationalOperatingSegmentMember 2018-01-01 2018-09-30 0000005272 aig:LifeAndRetirementMember us-gaap:OperatingSegmentsMember aig:IndividualRetirementSegmentMember 2019-01-01 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:EquityContractMember 2018-12-31 0000005272 aig:SecuredFinancingsMember aig:BondsAvailableForSaleSecuritiesMember us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:MaturityOvernightAndOnDemandMember 2018-12-31 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:ForeignGovernmentDebtSecuritiesMember 2019-06-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:CommercialMortgageBackedSecuritiesMember 2019-07-01 2019-09-30 0000005272 us-gaap:CommercialMortgageBackedSecuritiesMember aig:BondsTradingSecuritiesMember 2019-06-30 0000005272 us-gaap:OtherIncomeMember aig:BondsAvailableForSaleSecuritiesMember 2019-01-01 2019-09-30 0000005272 aig:SecuredFinancingsMember 2018-12-31 0000005272 aig:GuaranteedInvestmentAgreementsMember 2019-09-30 0000005272 aig:CommercialMortgageMember aig:DebtServiceCoverageRatioRangeTwoMember aig:CommercialMortgageCreditQualityIndicatorRangeFourMember 2018-12-31 0000005272 us-gaap:InterestRateContractMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member 2019-09-30 0000005272 srt:ParentCompanyMember 2018-07-01 2018-09-30 0000005272 aig:ValidusHoldingsLtdMember 2018-07-01 2018-09-30 0000005272 aig:AIGLifeHoldingsUSIncMember 2018-07-01 2018-09-30 0000005272 us-gaap:AccumulatedOtherThanTemporaryImpairmentMember 2019-06-30 0000005272 us-gaap:AccumulatedOtherThanTemporaryImpairmentMember 2019-07-01 2019-09-30 0000005272 us-gaap:AccumulatedOtherThanTemporaryImpairmentMember 2018-06-30 0000005272 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember 2018-07-01 2018-09-30 0000005272 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2018-07-01 2018-09-30 0000005272 us-gaap:AccumulatedTranslationAdjustmentMember 2018-07-01 2018-09-30 0000005272 aig:SecuredFinancingsMember aig:BondsAvailableForSaleSecuritiesMember us-gaap:USStatesAndPoliticalSubdivisionsMember 2019-09-30 0000005272 srt:ParentCompanyMember us-gaap:ShortTermInvestmentsMember 2018-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:InterestRateContractMember 2018-12-31 0000005272 aig:ValidusHoldingsLtdMember aig:NorthAmericaOperatingSegmentMember 2018-07-18 0000005272 srt:MaximumMember us-gaap:GuaranteedMinimumWithdrawalBenefitMember aig:MeasurementInputEquityInterestRateCorrelationMember 2018-12-31 0000005272 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2018-01-01 2018-09-30 0000005272 us-gaap:RetainedEarningsMember 2019-09-30 0000005272 us-gaap:WarrantMember 2019-01-01 2019-09-30 0000005272 us-gaap:PreferredStockIncludingAdditionalPaidInCapitalMember 2019-06-30 0000005272 aig:OtherInvestedAssetsMember 2019-09-30 0000005272 aig:PolicyholderContractDepositsMember 2019-09-30 0000005272 us-gaap:ForeignExchangeContractMember 2019-07-01 2019-09-30 0000005272 us-gaap:EquityContractMember 2019-06-30 0000005272 us-gaap:OtherContractMember 2019-06-30 0000005272 aig:LiabilitiesMember 2019-06-30 0000005272 aig:BondsTradingSecuritiesMember us-gaap:CommercialMortgageBackedSecuritiesMember 2018-07-01 2018-09-30 0000005272 aig:BondsTradingSecuritiesMember aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2018-07-01 2018-09-30 0000005272 us-gaap:DerivativeFinancialInstrumentsLiabilitiesMember 2018-07-01 2018-09-30 0000005272 us-gaap:USTreasuryAndGovernmentMember aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember aig:Maturity365DaysorGreaterMember 2018-12-31 0000005272 aig:SecuredFinancingsMember aig:Maturity91To364DaysMember 2019-09-30 0000005272 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember 2017-12-31 0000005272 us-gaap:ResidentialMortgageBackedSecuritiesMember aig:MeasurementInputYieldMember srt:WeightedAverageMember 2018-12-31 0000005272 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2018-07-01 2018-09-30 0000005272 us-gaap:PreferredStockIncludingAdditionalPaidInCapitalMember 2018-07-01 2018-09-30 0000005272 us-gaap:RetainedEarningsMember 2018-07-01 2018-09-30 0000005272 us-gaap:CommonStockMember 2018-07-01 2018-09-30 0000005272 us-gaap:TreasuryStockMember 2018-07-01 2018-09-30 0000005272 us-gaap:ParentMember 2018-07-01 2018-09-30 0000005272 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2017-12-31 0000005272 us-gaap:RetainedEarningsMember 2018-06-30 0000005272 us-gaap:SeriesAPreferredStockMember 2019-06-17 2019-06-17 0000005272 aig:DepositarySharesMember 2019-06-17 2019-06-17 0000005272 2018-06-28 2018-06-28 0000005272 us-gaap:NoncontrollingInterestMember 2018-07-01 2018-09-30 0000005272 us-gaap:AdditionalPaidInCapitalMember 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:OtherContractMember 2019-09-30 0000005272 aig:StockPurchaseRightsMember 2019-01-01 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:SecuredFinancingsMember us-gaap:CorporateDebtSecuritiesMember aig:Maturity91To364DaysMember 2018-12-31 0000005272 us-gaap:CreditIndexProductMember aig:MeasurementInputMortalityMultiplierMember srt:MaximumMember 2019-09-30 0000005272 srt:MinimumMember us-gaap:GuaranteedMinimumWithdrawalBenefitMember aig:MeasurementInputEquityVolatilityMember 2018-12-31 0000005272 us-gaap:FairValueInputsLevel3Member aig:CertainCollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember aig:DiscountedCashflowValuationTechniqueMember 2019-09-30 0000005272 us-gaap:CreditIndexProductMember srt:MaximumMember us-gaap:MeasurementInputLapseRateMember 2018-12-31 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:Maturity31To90DaysMember aig:SecuredFinancingsMember us-gaap:CorporateDebtSecuritiesMember 2019-09-30 0000005272 us-gaap:CorporateDebtSecuritiesMember aig:BondsTradingSecuritiesMember 2019-07-01 2019-09-30 0000005272 us-gaap:TreasuryStockMember 2019-06-30 0000005272 aig:BondsTradingSecuritiesMember us-gaap:CorporateDebtSecuritiesMember 2018-07-01 2018-09-30 0000005272 aig:GeneralInsuranceMember aig:NorthAmericaOperatingSegmentMember us-gaap:OperatingSegmentsMember 2019-07-01 2019-09-30 0000005272 aig:LifeAndRetirementMember aig:InstitutionalMarketsMember us-gaap:OperatingSegmentsMember 2019-07-01 2019-09-30 0000005272 aig:LifeAndRetirementMember aig:GroupRetirementSegmentMember us-gaap:OperatingSegmentsMember 2018-07-01 2018-09-30 0000005272 aig:OperatingSegmentsCorporateAndOtherEliminationsMember 2019-07-01 2019-09-30 0000005272 us-gaap:MaterialReconcilingItemsMember us-gaap:OperatingIncomeLossMember 2018-07-01 2018-09-30 0000005272 us-gaap:IntersegmentEliminationMember 2018-07-01 2018-09-30 0000005272 aig:ValidusHoldingsLtdMember 2018-07-01 2018-09-30 0000005272 us-gaap:TreasuryStockMember 2018-06-30 0000005272 us-gaap:PensionPlansDefinedBenefitMember aig:DefinedBenefitPlanEquitySecurityNonUsMember 2019-07-01 2019-09-30 0000005272 us-gaap:PensionPlansDefinedBenefitMember country:US 2019-07-01 2019-09-30 0000005272 us-gaap:PensionPlansDefinedBenefitMember 2019-07-01 2019-09-30 0000005272 country:US us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2019-07-01 2019-09-30 0000005272 aig:DefinedBenefitPlanEquitySecurityNonUsMember us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2019-07-01 2019-09-30 0000005272 us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2019-07-01 2019-09-30 0000005272 us-gaap:PensionPlansDefinedBenefitMember country:US 2018-07-01 2018-09-30 0000005272 us-gaap:PensionPlansDefinedBenefitMember aig:DefinedBenefitPlanEquitySecurityNonUsMember 2018-07-01 2018-09-30 0000005272 country:US us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2018-07-01 2018-09-30 0000005272 aig:DefinedBenefitPlanEquitySecurityNonUsMember us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2018-07-01 2018-09-30 0000005272 us-gaap:PensionPlansDefinedBenefitMember country:US 2019-01-01 2019-09-30 0000005272 us-gaap:PensionPlansDefinedBenefitMember aig:DefinedBenefitPlanEquitySecurityNonUsMember 2019-01-01 2019-09-30 0000005272 country:US us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2019-01-01 2019-09-30 0000005272 aig:DefinedBenefitPlanEquitySecurityNonUsMember us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2019-01-01 2019-09-30 0000005272 us-gaap:PensionPlansDefinedBenefitMember country:US 2018-01-01 2018-09-30 0000005272 us-gaap:PensionPlansDefinedBenefitMember aig:DefinedBenefitPlanEquitySecurityNonUsMember 2018-01-01 2018-09-30 0000005272 country:US us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2018-01-01 2018-09-30 0000005272 aig:DefinedBenefitPlanEquitySecurityNonUsMember us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2018-01-01 2018-09-30 0000005272 us-gaap:EquitySecuritiesMember us-gaap:InvestmentIncomeMember 2019-01-01 2019-09-30 0000005272 us-gaap:EquitySecuritiesMember us-gaap:OtherIncomeMember 2019-01-01 2019-09-30 0000005272 aig:NetRealizedCapitalGainsLossesMember us-gaap:EquitySecuritiesMember 2018-07-01 2018-09-30 0000005272 us-gaap:NoncontrollingInterestMember 2019-06-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:FairValueInputsLevel3Member 2018-12-31 0000005272 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:EquityContractMember 2018-12-31 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:CorporateDebtSecuritiesMember 2019-06-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2019-06-30 0000005272 us-gaap:ResidentialMortgageBackedSecuritiesMember aig:BondsTradingSecuritiesMember 2019-09-30 0000005272 aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember aig:BondsTradingSecuritiesMember 2019-09-30 0000005272 us-gaap:InterestRateContractMember 2019-09-30 0000005272 us-gaap:CreditRiskContractMember 2019-07-01 2019-09-30 0000005272 us-gaap:DerivativeFinancialInstrumentsLiabilitiesMember 2019-07-01 2019-09-30 0000005272 aig:LiabilitiesMember 2019-09-30 0000005272 us-gaap:ForeignExchangeContractMember 2018-07-01 2018-09-30 0000005272 us-gaap:InvestmentIncomeMember aig:OtherInvestedAssetsMember 2019-07-01 2019-09-30 0000005272 us-gaap:OtherIncomeMember aig:BondsTradingSecuritiesMember 2018-07-01 2018-09-30 0000005272 us-gaap:OtherIncomeMember aig:BondsAvailableForSaleSecuritiesMember 2018-07-01 2018-09-30 0000005272 us-gaap:AssetsMember 2019-07-01 2019-09-30 0000005272 us-gaap:RealEstateInvestmentMember 2019-07-01 2019-09-30 0000005272 aig:OtherFixedMaturitySecuritiesMember 2019-07-01 2019-09-30 0000005272 aig:OtherInvestmentMember 2018-07-01 2018-09-30 0000005272 aig:PurchasedCreditImpairedSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2017-12-31 0000005272 aig:OtherMortgagesMember 2017-12-31 0000005272 us-gaap:MeasurementInputMortalityRateMember aig:IndexLifeMember srt:MinimumMember 2018-12-31 0000005272 us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember aig:RealEstateAndInvestmentFundsMember 2018-12-31 0000005272 us-gaap:DerivativeFinancialInstrumentsLiabilitiesMember 2018-09-30 0000005272 srt:MinimumMember 2019-09-30 0000005272 us-gaap:MeasurementInputConstantPrepaymentRateMember us-gaap:ResidentialMortgageBackedSecuritiesMember srt:MaximumMember 2019-09-30 0000005272 srt:MinimumMember us-gaap:GuaranteedMinimumWithdrawalBenefitMember aig:MeasurementInputDynamicLapseMultiplierMember 2018-12-31 0000005272 aig:OtherInvestedAssetsMember 2019-06-30 0000005272 aig:PolicyholderContractDepositsMember 2019-06-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member us-gaap:CreditRiskContractMember 2019-09-30 0000005272 aig:ValidusHoldingsLtdMember aig:InternationalOperatingSegmentMember 2018-07-18 0000005272 us-gaap:CommercialMortgageBackedSecuritiesMember aig:BondsTradingSecuritiesMember 2018-12-31 0000005272 us-gaap:EquityContractMember 2018-12-31 0000005272 aig:LifeAndRetirementMember aig:IndividualRetirementSegmentMember us-gaap:OperatingSegmentsMember 2019-07-01 2019-09-30 0000005272 aig:LifeAndRetirementMember us-gaap:OperatingSegmentsMember 2018-07-01 2018-09-30 0000005272 us-gaap:CorporateAndOtherMember 2019-07-01 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:NetRealizedCapitalGainsLossesMember 2019-07-01 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:InvestmentIncomeMember 2018-07-01 2018-09-30 0000005272 us-gaap:DerivativeFinancialInstrumentsLiabilitiesMember us-gaap:OtherIncomeMember 2019-07-01 2019-09-30 0000005272 us-gaap:DerivativeFinancialInstrumentsLiabilitiesMember us-gaap:InvestmentIncomeMember 2018-07-01 2018-09-30 0000005272 2017-12-31 0000005272 us-gaap:OtherContractMember 2017-12-31 0000005272 us-gaap:NondesignatedMember us-gaap:InvestmentIncomeMember 2018-07-01 2018-09-30 0000005272 aig:NetRealizedCapitalGainsLossesMember us-gaap:NondesignatedMember 2018-07-01 2018-09-30 0000005272 aig:LegacyPropertyAndCasualtyRunOffInsuranceLinesMember 2018-07-01 2018-09-30 0000005272 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2019-07-01 2019-09-30 0000005272 us-gaap:AccumulatedOtherThanTemporaryImpairmentMember 2017-12-31 0000005272 us-gaap:EquityContractMember 2019-09-30 0000005272 us-gaap:OtherContractMember 2019-09-30 0000005272 us-gaap:CorporateDebtSecuritiesMember aig:BondsTradingSecuritiesMember 2018-12-31 0000005272 aig:PolicyholderContractDepositsMember 2018-12-31 0000005272 us-gaap:InterestRateContractMember 2018-12-31 0000005272 aig:GeneralInsuranceMember aig:InternationalOperatingSegmentMember us-gaap:OperatingSegmentsMember 2019-07-01 2019-09-30 0000005272 aig:MortgageAndOtherLoansReceivableMember 2018-12-31 0000005272 aig:OtherInvestedAssetsMember 2018-12-31 0000005272 aig:GeneralInsuranceMember us-gaap:OperatingSegmentsMember 2018-07-01 2018-09-30 0000005272 aig:LifeAndRetirementMember aig:GroupRetirementSegmentMember us-gaap:OperatingSegmentsMember 2019-07-01 2019-09-30 0000005272 us-gaap:IntersegmentEliminationMember 2019-07-01 2019-09-30 0000005272 aig:LegacyPortfolioMember 2018-07-01 2018-09-30 0000005272 aig:CommercialMortgageMember stpr:NY 2019-01-01 2019-09-30 0000005272 aig:CommercialMortgageMember stpr:CA 2019-01-01 2019-09-30 0000005272 us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2019-01-01 2019-09-30 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:USStatesAndPoliticalSubdivisionsMember 2019-09-30 0000005272 us-gaap:ForeignGovernmentDebtSecuritiesMember 2019-01-01 2019-09-30 0000005272 us-gaap:InterestRateContractMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:FairValueHedgingMember us-gaap:InvestmentIncomeMember 2018-07-01 2018-09-30 0000005272 aig:AlternativeFundsMember us-gaap:FairValueMeasurementsNonrecurringMember 2018-07-01 2018-09-30 0000005272 aig:OtherAssetsMiscellaneousMember us-gaap:FairValueMeasurementsNonrecurringMember 2018-07-01 2018-09-30 0000005272 us-gaap:AccumulatedOtherThanTemporaryImpairmentMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2018-07-01 2018-09-30 0000005272 aig:BondAndEquitySecuritiesMember 2019-07-01 2019-09-30 0000005272 aig:BondAndEquitySecuritiesMember 2018-07-01 2018-09-30 0000005272 aig:GeneralInsuranceMember us-gaap:OperatingSegmentsMember 2019-07-01 2019-09-30 0000005272 aig:LifeAndRetirementMember aig:InstitutionalMarketsMember us-gaap:OperatingSegmentsMember 2018-07-01 2018-09-30 0000005272 aig:LifeAndRetirementMember us-gaap:OperatingSegmentsMember 2019-07-01 2019-09-30 0000005272 us-gaap:InvestmentIncomeMember aig:BondsAvailableForSaleSecuritiesMember 2019-07-01 2019-09-30 0000005272 aig:OtherInvestedAssetsMember us-gaap:OtherIncomeMember 2018-07-01 2018-09-30 0000005272 aig:NetRealizedCapitalGainsLossesMember aig:PolicyholderContractDepositsMember 2019-07-01 2019-09-30 0000005272 us-gaap:DerivativeFinancialInstrumentsLiabilitiesMember us-gaap:OtherIncomeMember 2018-07-01 2018-09-30 0000005272 us-gaap:AssetsMember 2018-07-01 2018-09-30 0000005272 aig:OtherInvestmentMember 2019-07-01 2019-09-30 0000005272 us-gaap:RealEstateInvestmentMember 2018-07-01 2018-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:CorporateDebtSecuritiesMember 2017-12-31 0000005272 us-gaap:CommercialMortgageBackedSecuritiesMember aig:BondsTradingSecuritiesMember 2017-12-31 0000005272 us-gaap:ForeignExchangeContractMember 2017-12-31 0000005272 us-gaap:FairValueHedgingMember us-gaap:DesignatedAsHedgingInstrumentMember aig:NetRealizedCapitalGainsLossesMember us-gaap:ForeignExchangeContractMember 2019-07-01 2019-09-30 0000005272 us-gaap:NondesignatedMember aig:PolicyFeesMember 2018-07-01 2018-09-30 0000005272 us-gaap:OtherContractMember us-gaap:NondesignatedMember 2019-07-01 2019-09-30 0000005272 us-gaap:NondesignatedMember aig:PolicyFeesMember 2019-07-01 2019-09-30 0000005272 aig:MortgageAndOtherLoansReceivableMember 2018-06-30 0000005272 stpr:NY 2019-01-01 2019-09-30 0000005272 aig:OtherSubsidiariesMember 2018-09-30 0000005272 srt:ParentCompanyMember us-gaap:ShortTermInvestmentsMember 2019-09-30 0000005272 aig:SecuredFinancingsMember aig:BondsAvailableForSaleSecuritiesMember aig:Maturity91To364DaysMember us-gaap:USStatesAndPoliticalSubdivisionsMember 2018-12-31 0000005272 aig:OperatingSegmentsCorporateAndOtherEliminationsMember 2018-01-01 2018-09-30 0000005272 aig:NetRealizedCapitalGainsLossesMember aig:BondsTradingSecuritiesMember 2019-07-01 2019-09-30 0000005272 aig:NetRealizedCapitalGainsLossesMember aig:OtherInvestedAssetsMember 2019-07-01 2019-09-30 0000005272 us-gaap:DerivativeFinancialInstrumentsLiabilitiesMember aig:NetRealizedCapitalGainsLossesMember 2019-07-01 2019-09-30 0000005272 us-gaap:OtherIncomeMember aig:PolicyholderContractDepositsMember 2019-07-01 2019-09-30 0000005272 aig:MortgageAndOtherLoansMember 2018-07-01 2018-09-30 0000005272 us-gaap:ParentMember 2019-06-30 0000005272 us-gaap:AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember 2019-07-01 2019-09-30 0000005272 us-gaap:AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember 2018-07-01 2018-09-30 0000005272 aig:MortgageAndOtherLoansMember 2019-07-01 2019-09-30 0000005272 aig:AlternativeFundsMember 2019-07-01 2019-09-30 0000005272 aig:PurchasedCreditImpairedSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2019-07-01 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:USStatesAndPoliticalSubdivisionsMember 2017-12-31 0000005272 us-gaap:CorporateDebtSecuritiesMember aig:BondsTradingSecuritiesMember 2017-12-31 0000005272 us-gaap:DerivativeFinancialInstrumentsLiabilitiesMember 2017-12-31 0000005272 us-gaap:InterestRateContractMember us-gaap:FairValueHedgingMember us-gaap:DesignatedAsHedgingInstrumentMember aig:NetRealizedCapitalGainsLossesMember 2019-07-01 2019-09-30 0000005272 us-gaap:NondesignatedMember 2018-07-01 2018-09-30 0000005272 us-gaap:NondesignatedMember 2019-07-01 2019-09-30 0000005272 us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember 2019-07-01 2019-09-30 0000005272 us-gaap:FairValueMeasurementsNonrecurringMember aig:AlternativeFundsMember 2019-07-01 2019-09-30 0000005272 aig:Maturity31To90DaysMember aig:SecuredFinancingsMember aig:BondsAvailableForSaleSecuritiesMember us-gaap:USStatesAndPoliticalSubdivisionsMember 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2017-12-31 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:CommercialMortgageBackedSecuritiesMember 2017-12-31 0000005272 aig:MortgageAndOtherLoansReceivableMember 2017-12-31 0000005272 us-gaap:FairValueHedgingMember us-gaap:DesignatedAsHedgingInstrumentMember aig:NetRealizedCapitalGainsLossesMember us-gaap:ForeignExchangeContractMember 2018-07-01 2018-09-30 0000005272 us-gaap:NondesignatedMember us-gaap:EmbeddedDerivativeFinancialInstrumentsMember 2018-07-01 2018-09-30 0000005272 aig:NetRealizedCapitalGainsLossesMember us-gaap:NondesignatedMember 2019-07-01 2019-09-30 0000005272 us-gaap:InterestRateContractMember us-gaap:NondesignatedMember 2019-07-01 2019-09-30 0000005272 us-gaap:CorporateDebtSecuritiesMember aig:BondsTradingSecuritiesMember 2019-06-30 0000005272 aig:BondsTradingSecuritiesMember 2019-06-30 0000005272 aig:MortgageAndOtherLoansReceivableMember 2019-06-30 0000005272 us-gaap:OtherAssetsMember 2019-06-30 0000005272 us-gaap:InterestRateContractMember 2019-06-30 0000005272 us-gaap:AdditionalPaidInCapitalMember 2018-07-01 2018-09-30 0000005272 us-gaap:NoncontrollingInterestMember 2017-12-31 0000005272 us-gaap:RetainedEarningsMember 2017-12-31 0000005272 us-gaap:PreferredStockIncludingAdditionalPaidInCapitalMember 2017-12-31 0000005272 us-gaap:PreferredStockIncludingAdditionalPaidInCapitalMember 2018-06-30 0000005272 aig:AIGLifeHoldingsUSIncMember 2017-12-31 0000005272 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2019-07-01 2019-09-30 0000005272 us-gaap:PrivateEquityFundsMember aig:FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareLiquidatingInvestmentRemainingPeriodCategoryOneMember 2019-09-30 0000005272 us-gaap:USTreasuryAndGovernmentMember 2018-07-01 2018-09-30 0000005272 aig:OtherFixedMaturitySecuritiesMember 2019-01-01 2019-09-30 0000005272 us-gaap:CreditIndexProductMember aig:MeasurementInputMortalityMultiplierMember srt:MaximumMember 2018-12-31 0000005272 us-gaap:AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember 2019-09-30 0000005272 aig:InterestCreditedToPolicyholdersAccountBalancesMember us-gaap:InterestRateContractMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:FairValueHedgingMember 2018-07-01 2018-09-30 0000005272 srt:ConsolidationEliminationsMember 2017-12-31 0000005272 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2019-07-01 2019-09-30 0000005272 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2018-07-01 2018-09-30 0000005272 aig:AlternativeFundsMember 2018-01-01 2018-09-30 0000005272 us-gaap:PrivateEquityFundsMember srt:MaximumMember 2019-01-01 2019-09-30 0000005272 aig:BondsTradingSecuritiesMember 2018-12-31 0000005272 aig:LifeAndRetirementMember us-gaap:OperatingSegmentsMember us-gaap:LifeInsuranceSegmentMember 2019-07-01 2019-09-30 0000005272 aig:BondAndEquitySecuritiesMember 2019-01-01 2019-09-30 0000005272 us-gaap:ForeignGovernmentDebtSecuritiesMember 2018-07-01 2018-09-30 0000005272 us-gaap:PrivateEquityFundsMember aig:FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareLiquidatingInvestmentRemainingPeriodCategoryTwoMember srt:MinimumMember 2019-01-01 2019-09-30 0000005272 2019-06-28 2019-06-28 0000005272 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember 2019-06-30 0000005272 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember 2018-06-30 0000005272 us-gaap:InterestRateContractMember us-gaap:FairValueHedgingMember us-gaap:DesignatedAsHedgingInstrumentMember aig:NetRealizedCapitalGainsLossesMember 2018-07-01 2018-09-30 0000005272 aig:OtherInvestedAssetsMember us-gaap:InvestmentIncomeMember 2018-07-01 2018-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:NetRealizedCapitalGainsLossesMember 2018-07-01 2018-09-30 0000005272 us-gaap:InvestmentIncomeMember aig:BondsTradingSecuritiesMember 2018-07-01 2018-09-30 0000005272 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsNonrecurringMember aig:OtherAssetsMiscellaneousMember 2019-09-30 0000005272 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2019-06-30 0000005272 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2018-06-30 0000005272 us-gaap:AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember 2019-06-30 0000005272 us-gaap:AdditionalPaidInCapitalMember 2017-12-31 0000005272 us-gaap:AdditionalPaidInCapitalMember 2018-06-30 0000005272 us-gaap:EmbeddedDerivativeFinancialInstrumentsMember 2018-12-31 0000005272 aig:BondsTradingSecuritiesMember 2017-12-31 0000005272 us-gaap:EquityContractMember 2017-12-31 0000005272 us-gaap:CreditRiskContractMember 2017-12-31 0000005272 us-gaap:OtherContractMember us-gaap:NondesignatedMember 2018-07-01 2018-09-30 0000005272 us-gaap:NondesignatedMember us-gaap:OtherIncomeMember 2018-07-01 2018-09-30 0000005272 us-gaap:OtherIncomeMember aig:BondsTradingSecuritiesMember 2018-01-01 2018-09-30 0000005272 us-gaap:CommonStockMember 2017-12-31 0000005272 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2018-06-30 0000005272 us-gaap:CommonStockMember 2018-06-30 0000005272 us-gaap:PensionPlansDefinedBenefitMember 2018-07-01 2018-09-30 0000005272 us-gaap:AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember 2018-06-30 0000005272 us-gaap:TreasuryStockMember 2017-12-31 0000005272 aig:OtherAssetsMiscellaneousMember us-gaap:FairValueMeasurementsNonrecurringMember 2019-07-01 2019-09-30 0000005272 srt:MinimumMember aig:MeasurementInputYieldMember us-gaap:USStatesAndPoliticalSubdivisionsMember 2018-12-31 0000005272 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:USStatesAndPoliticalSubdivisionsMember 2019-09-30 0000005272 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsNonrecurringMember aig:FairValueAssetsImpairmentChargesMeasuredOnNonrecurringBasisDomain 2019-09-30 0000005272 aig:ValidusHoldingsLtdMember us-gaap:OtherAssetsMember 2019-09-30 0000005272 us-gaap:RetainedEarningsMember 2018-12-31 0000005272 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member us-gaap:CommercialMortgageBackedSecuritiesMember 2018-12-31 0000005272 aig:CommercialMortgageMember aig:DebtServiceCoverageRatioRangeTwoMember aig:CommercialMortgageCreditQualityIndicatorTotalMember 2018-12-31 0000005272 aig:Maturity31To90DaysMember aig:SecuredFinancingsMember 2018-12-31 0000005272 aig:CommercialMortgageMember aig:DebtServiceCoverageRatioRangeThreeMember aig:CommercialMortgageCreditQualityIndicatorRangeTwoMember 2019-09-30 0000005272 aig:RealEstateAndInvestmentFundsMember 2018-12-31 0000005272 us-gaap:ParentMember 2018-06-30 0000005272 us-gaap:PrivateEquityFundsMember aig:FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareLiquidatingInvestmentRemainingPeriodCategoryTwoMember 2019-09-30 0000005272 aig:FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareLiquidatingInvestmentRemainingPeriodCategoryThreeMember us-gaap:PrivateEquityFundsMember 2019-09-30 0000005272 aig:IndexLifeMember srt:MaximumMember aig:MeasurementInputBaseLapseRatesMember 2019-09-30 0000005272 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2019-09-30 0000005272 aig:LiabilitiesMember 2018-06-30 0000005272 aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember us-gaap:CorporateDebtSecuritiesMember us-gaap:MaturityOvernightAndOnDemandMember 2018-12-31 0000005272 aig:CommercialMortgageMember aig:DebtServiceCoverageRatioRangeTwoMember aig:CommercialMortgageCreditQualityIndicatorRangeThreeMember 2019-09-30 0000005272 us-gaap:RetainedEarningsMember 2019-06-30 0000005272 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2019-06-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:USStatesAndPoliticalSubdivisionsMember 2019-06-30 0000005272 us-gaap:ResidentialMortgageBackedSecuritiesMember aig:BondsTradingSecuritiesMember 2019-06-30 0000005272 aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember aig:BondsTradingSecuritiesMember 2019-06-30 0000005272 aig:BondsTradingSecuritiesMember 2019-09-30 0000005272 aig:MortgageAndOtherLoansReceivableMember 2019-09-30 0000005272 us-gaap:OtherAssetsMember 2019-09-30 0000005272 us-gaap:ForeignExchangeContractMember 2019-06-30 0000005272 us-gaap:CreditRiskContractMember 2019-06-30 0000005272 us-gaap:DerivativeFinancialInstrumentsLiabilitiesMember 2019-06-30 0000005272 us-gaap:OtherAssetsMember 2018-12-31 0000005272 aig:LegacyPortfolioMember 2019-07-01 2019-09-30 0000005272 us-gaap:CorporateAndOtherMember 2018-07-01 2018-09-30 0000005272 aig:BondsTradingSecuritiesMember us-gaap:InvestmentIncomeMember 2019-07-01 2019-09-30 0000005272 us-gaap:OtherIncomeMember aig:BondsAvailableForSaleSecuritiesMember 2019-07-01 2019-09-30 0000005272 us-gaap:OtherIncomeMember aig:PolicyholderContractDepositsMember 2018-07-01 2018-09-30 0000005272 us-gaap:DerivativeFinancialInstrumentsLiabilitiesMember aig:NetRealizedCapitalGainsLossesMember 2018-07-01 2018-09-30 0000005272 aig:AlternativeFundsMember 2018-07-01 2018-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2017-12-31 0000005272 aig:BondsAvailableForSaleSecuritiesMember 2017-12-31 0000005272 aig:OtherInvestedAssetsMember 2017-12-31 0000005272 aig:LiabilitiesMember 2017-12-31 0000005272 us-gaap:InterestRateContractMember us-gaap:NondesignatedMember 2018-07-01 2018-09-30 0000005272 us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember 2018-07-01 2018-09-30 0000005272 us-gaap:NondesignatedMember aig:PolicyholderBenefitsAndClaimsIncurredMember 2019-07-01 2019-09-30 0000005272 us-gaap:NondesignatedMember us-gaap:EquityContractMember 2019-07-01 2019-09-30 0000005272 aig:ValidusHoldingsLtdMember 2017-12-31 0000005272 aig:OtherSubsidiariesMember 2017-12-31 0000005272 us-gaap:AccumulatedOtherThanTemporaryImpairmentMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2019-07-01 2019-09-30 0000005272 us-gaap:ParentMember 2017-12-31 0000005272 us-gaap:PrivateEquityFundsMember srt:MinimumMember 2019-01-01 2019-09-30 0000005272 us-gaap:PrivateEquityFundsMember srt:MaximumMember aig:FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareLiquidatingInvestmentRemainingPeriodCategoryOneMember 2019-01-01 2019-09-30 0000005272 us-gaap:NoncontrollingInterestMember 2018-06-30 0000005272 us-gaap:FixedMaturitiesMember 2018-06-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:ForeignGovernmentDebtSecuritiesMember 2018-06-30 0000005272 us-gaap:FairValueInputsLevel3Member us-gaap:CommercialMortgageBackedSecuritiesMember aig:DiscountedCashflowValuationTechniqueMember 2019-09-30 0000005272 aig:Maturity31To90DaysMember aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember us-gaap:ForeignGovernmentDebtSecuritiesMember 2018-12-31 0000005272 us-gaap:ParentMember 2018-12-31 0000005272 aig:CommercialMortgageMember aig:CommercialMortgageCreditQualityIndicatorTotalMember aig:DebtServiceCoverageRatioRangeTotalMember 2019-09-30 0000005272 us-gaap:AccumulatedOtherThanTemporaryImpairmentMember 2018-09-30 0000005272 us-gaap:OtherAssetsMember 2018-09-30 0000005272 us-gaap:OtherIncomeMember aig:OtherInvestedAssetsMember 2019-01-01 2019-09-30 0000005272 aig:OtherAssetsMiscellaneousMember us-gaap:FairValueMeasurementsNonrecurringMember 2019-01-01 2019-09-30 0000005272 us-gaap:CommonStockMember 2018-09-30 0000005272 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:CreditRiskContractMember 2019-09-30 0000005272 aig:BondsTradingSecuritiesMember us-gaap:CommercialMortgageBackedSecuritiesMember 2018-06-30 0000005272 us-gaap:InterestRateContractMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2018-12-31 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:AccumulatedOtherThanTemporaryImpairmentMember us-gaap:MortgageBackedSecuritiesMember 2018-12-31 0000005272 aig:CommercialMortgageMember aig:DebtServiceCoverageRatioRangeTwoMember aig:CommercialMortgageCreditQualityIndicatorTotalMember 2019-09-30 0000005272 us-gaap:CreditIndexProductMember srt:MaximumMember aig:MeasurementInputOptionsBudgetMember 2018-12-31 0000005272 aig:CommercialMortgageMember aig:CommercialMortgageCreditQualityIndicatorRangeThreeMember aig:DebtServiceCoverageRatioRangeTotalMember 2018-12-31 0000005272 srt:MinimumMember us-gaap:GuaranteedMinimumWithdrawalBenefitMember aig:MeasurementInputEquityInterestRateCorrelationMember 2018-12-31 0000005272 aig:OtherFixedMaturitySecuritiesMember 2018-01-01 2018-09-30 0000005272 aig:OtherAssetsMiscellaneousMember us-gaap:FairValueMeasurementsNonrecurringMember 2018-01-01 2018-09-30 0000005272 srt:MaximumMember us-gaap:GuaranteedMinimumWithdrawalBenefitMember aig:MeasurementInputDynamicLapseMultiplierMember 2019-09-30 0000005272 us-gaap:ResidentialMortgageBackedSecuritiesMember srt:MaximumMember us-gaap:MeasurementInputLossSeverityMember 2019-09-30 0000005272 us-gaap:NondesignatedMember aig:PolicyholderBenefitsAndClaimsIncurredMember 2019-01-01 2019-09-30 0000005272 us-gaap:OtherAssetsMember 2019-09-30 0000005272 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2018-12-31 0000005272 aig:CommercialMortgageMember aig:DebtServiceCoverageRatioRangeThreeMember aig:CommercialMortgageCreditQualityIndicatorRangeThreeMember 2019-09-30 0000005272 us-gaap:FairValueMeasurementsNonrecurringMember aig:AlternativeFundsMember us-gaap:FairValueInputsLevel3Member 2019-09-30 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:AccumulatedOtherThanTemporaryImpairmentMember us-gaap:CorporateDebtSecuritiesMember 2019-09-30 0000005272 us-gaap:ResidentialMortgageBackedSecuritiesMember srt:MaximumMember aig:MeasurementInputConstantDefaultRateMember 2018-12-31 0000005272 us-gaap:ResidentialMortgageMember 2018-12-31 0000005272 us-gaap:USTreasuryAndGovernmentMember aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember aig:Maturity91To364DaysMember 2019-09-30 0000005272 srt:MinimumMember us-gaap:GuaranteedMinimumWithdrawalBenefitMember aig:MeasurementInputEquityVolatilityMember 2019-09-30 0000005272 srt:MinimumMember aig:MeasurementInputMortalityMultiplierMember us-gaap:GuaranteedMinimumWithdrawalBenefitMember 2018-12-31 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:AccumulatedOtherThanTemporaryImpairmentMember 2018-12-31 0000005272 us-gaap:USTreasuryAndGovernmentMember aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember us-gaap:MaturityUpTo30DaysMember 2018-12-31 0000005272 aig:SecuredFinancingsMember aig:BondsAvailableForSaleSecuritiesMember us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:MaturityUpTo30DaysMember 2018-12-31 0000005272 aig:OtherSubsidiariesMember us-gaap:ShortTermInvestmentsMember 2018-12-31 0000005272 aig:BondsTradingSecuritiesMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2018-06-30 0000005272 us-gaap:FairValueMeasurementsNonrecurringMember aig:FairValueAssetsImpairmentChargesMeasuredOnNonrecurringBasisDomain 2018-01-01 2018-09-30 0000005272 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsNonrecurringMember aig:FairValueAssetsImpairmentChargesMeasuredOnNonrecurringBasisDomain 2018-12-31 0000005272 aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember aig:BondsAvailableForSaleSecuritiesMember us-gaap:AccumulatedOtherThanTemporaryImpairmentMember 2018-12-31 0000005272 us-gaap:PreferredStockIncludingAdditionalPaidInCapitalMember 2019-09-30 0000005272 us-gaap:ParentMember 2019-09-30 0000005272 aig:ValidusHoldingsLtdMember us-gaap:ShortTermInvestmentsMember 2019-09-30 0000005272 us-gaap:InterestRateContractMember 2018-09-30 0000005272 srt:MinimumMember us-gaap:GuaranteedMinimumWithdrawalBenefitMember us-gaap:MeasurementInputUtilizationRateMember 2019-09-30 0000005272 aig:CommercialMortgageMember aig:CommercialMortgageCreditQualityIndicatorRangeFourMember aig:DebtServiceCoverageRatioRangeTotalMember 2019-09-30 0000005272 aig:SecuredFinancingsMember aig:BondsTradingSecuritiesMember us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:MaturityUpTo30DaysMember 2018-12-31 0000005272 aig:IndexLifeMember srt:MinimumMember aig:MeasurementInputBaseLapseRatesMember 2019-09-30 0000005272 us-gaap:MeasurementInputConstantPrepaymentRateMember us-gaap:ResidentialMortgageBackedSecuritiesMember srt:WeightedAverageMember 2019-09-30 0000005272 us-gaap:MaturityUpTo30DaysMember 2019-09-30 0000005272 srt:MinimumMember us-gaap:CreditIndexProductMember aig:MeasurementInputOptionsBudgetMember 2018-12-31 0000005272 srt:MinimumMember us-gaap:ResidentialMortgageBackedSecuritiesMember aig:MeasurementInputConstantDefaultRateMember 2019-09-30 0000005272 aig:OtherInvestedAssetsMember 2018-06-30 0000005272 us-gaap:EquitySecuritiesMember us-gaap:InvestmentIncomeMember 2019-07-01 2019-09-30 0000005272 aig:NetRealizedCapitalGainsLossesMember us-gaap:EquitySecuritiesMember 2019-07-01 2019-09-30 0000005272 us-gaap:EquitySecuritiesMember us-gaap:OtherIncomeMember 2019-07-01 2019-09-30 0000005272 us-gaap:EmbeddedDerivativeFinancialInstrumentsMember 2019-09-30 0000005272 2019-10-25 0000005272 us-gaap:CommonStockMember us-gaap:SubsequentEventMember 2019-10-31 2019-10-31 0000005272 aig:NetRealizedCapitalGainsLossesMember us-gaap:EquitySecuritiesMember 2018-01-01 2018-09-30 0000005272 us-gaap:EquitySecuritiesMember us-gaap:OtherIncomeMember 2018-01-01 2018-09-30 0000005272 us-gaap:SubsequentEventMember us-gaap:PreferredStockMember 2019-10-31 2019-10-31 0000005272 us-gaap:SubsequentEventMember 2019-10-31 2019-10-31 0000005272 us-gaap:EquitySecuritiesMember us-gaap:InvestmentIncomeMember 2018-07-01 2018-09-30 0000005272 aig:NetRealizedCapitalGainsLossesMember us-gaap:EquitySecuritiesMember 2019-01-01 2019-09-30 0000005272 us-gaap:EquitySecuritiesMember us-gaap:OtherIncomeMember 2018-07-01 2018-09-30 0000005272 aig:GeneralInsuranceMember 2019-01-01 2019-09-30 0000005272 aig:CommercialMortgageMember aig:DebtServiceCoverageRatioRangeTotalMember aig:CommercialMortgageCreditQualityIndicatorRangeTwoMember 2018-12-31 0000005272 aig:BondsAvailableForSaleSecuritiesMember 2018-06-30 0000005272 aig:DepositarySharesMember 2019-03-14 0000005272 us-gaap:CommonStockMember 2019-06-30 0000005272 aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember aig:BondsTradingSecuritiesMember 2018-12-31 0000005272 us-gaap:ForeignExchangeContractMember 2018-12-31 0000005272 us-gaap:OtherIncomeMember aig:OtherInvestedAssetsMember 2019-07-01 2019-09-30 0000005272 aig:NetRealizedCapitalGainsLossesMember aig:BondsTradingSecuritiesMember 2018-07-01 2018-09-30 0000005272 us-gaap:DerivativeFinancialInstrumentsLiabilitiesMember us-gaap:InvestmentIncomeMember 2019-07-01 2019-09-30 0000005272 us-gaap:InvestmentIncomeMember aig:PolicyholderContractDepositsMember 2018-07-01 2018-09-30 0000005272 aig:OtherFixedMaturitySecuritiesMember 2018-07-01 2018-09-30 0000005272 us-gaap:FixedMaturitiesMember 2017-12-31 0000005272 aig:BondsAvailableForSaleSecuritiesMember us-gaap:ForeignGovernmentDebtSecuritiesMember 2017-12-31 0000005272 aig:CollateralizedDebtObligationsAndAssetBackedSecuritiesSecuritizedLoansAndReceivablesMember aig:BondsTradingSecuritiesMember 2017-12-31 0000005272 us-gaap:InterestRateContractMember 2017-12-31 0000005272 us-gaap:NondesignatedMember us-gaap:EquityContractMember 2018-07-01 2018-09-30 0000005272 us-gaap:NondesignatedMember us-gaap:InvestmentIncomeMember 2019-07-01 2019-09-30 0000005272 us-gaap:NondesignatedMember us-gaap:CreditRiskContractMember 2019-07-01 2019-09-30 0000005272 us-gaap:NondesignatedMember us-gaap:OtherIncomeMember 2019-07-01 2019-09-30 0000005272 us-gaap:FairValueMeasurementsNonrecurringMember aig:FairValueAssetsImpairmentChargesMeasuredOnNonrecurringBasisDomain 2019-07-01 2019-09-30 0000005272 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2018-07-01 2018-09-30 0000005272 us-gaap:ForeignGovernmentDebtSecuritiesMember 2018-01-01 2018-09-30 0000005272 us-gaap:USTreasuryAndGovernmentMember 2018-01-01 2018-09-30 0000005272 aig:FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareLiquidatingInvestmentRemainingPeriodCategoryThreeMember us-gaap:PrivateEquityFundsMember srt:MinimumMember 2019-01-01 2019-09-30 0000005272 us-gaap:AccumulatedTranslationAdjustmentMember 2019-06-30 0000005272 us-gaap:AccumulatedTranslationAdjustmentMember 2018-06-30 0000005272 us-gaap:PrivateEquityFundsMember 2019-01-01 2019-09-30 0000005272 us-gaap:SeriesAPreferredStockMember 2019-01-01 2019-09-30 0000005272 us-gaap:EquitySecuritiesMember us-gaap:InvestmentIncomeMember 2018-01-01 2018-09-30 0000005272 aig:LifeAndRetirementMember 2019-01-01 2019-09-30 0000005272 us-gaap:SeriesAPreferredStockMember 2019-09-16 2019-09-16 0000005272 aig:DepositarySharesMember 2019-09-16 2019-09-16 0000005272 2019-09-30 2019-09-30