0001099219false2023FYP9YP4Yhttp://fasb.org/us-gaap/2023#PolicyholderBenefitsAndClaimsIncurredNethttp://fasb.org/us-gaap/2023#PolicyholderBenefitsAndClaimsIncurredNethttp://fasb.org/us-gaap/2023#PolicyholderBenefitsAndClaimsIncurredNethttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#OtherAssetshttp://fasb.org/us-gaap/2023#OtherAssetshttp://fasb.org/us-gaap/2023#OtherLiabilitieshttp://fasb.org/us-gaap/2023#OtherLiabilitieshttp://fasb.org/us-gaap/2023#LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturitieshttp://fasb.org/us-gaap/2023#LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturitieshttp://fasb.org/us-gaap/2023#LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturitiesAbstracthttp://fasb.org/us-gaap/2023#LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturitiesAbstractP3Yhttp://fasb.org/us-gaap/2023#OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTaxhttp://fasb.org/us-gaap/2023#OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTaxhttp://fasb.org/us-gaap/2023#OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTaxhttp://fasb.org/us-gaap/2023#OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTaxhttp://fasb.org/us-gaap/2023#OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTaxhttp://fasb.org/us-gaap/2023#OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTaxhttp://fasb.org/us-gaap/2023#InvestmentAffiliatedIssuerControlledMemberhttp://fasb.org/us-gaap/2023#InvestmentAffiliatedIssuerControlledMemberhttp://fasb.org/srt/2023#AffiliatedEntityMemberhttp://fasb.org/srt/2023#AffiliatedEntityMemberP0Y0M232D00010992192023-01-012023-12-310001099219us-gaap:CommonStockMember2023-01-012023-12-310001099219us-gaap:SeriesAPreferredStockMember2023-01-012023-12-310001099219us-gaap:SeriesEPreferredStockMember2023-01-012023-12-310001099219us-gaap:SeriesFPreferredStockMember2023-01-012023-12-310001099219us-gaap:SeriesDPreferredStockMember2023-01-012023-12-310001099219us-gaap:SeriesGPreferredStockMember2023-01-012023-12-3100010992192023-06-30iso4217:USD00010992192024-02-08xbrli:shares00010992192023-12-3100010992192022-12-310001099219met:ResidentialLoansHeldForInvestmentMember2023-12-310001099219met:ResidentialLoansHeldForInvestmentMember2022-12-310001099219us-gaap:VariableInterestEntityPrimaryBeneficiaryMember2023-12-310001099219us-gaap:VariableInterestEntityPrimaryBeneficiaryMember2022-12-31iso4217:USDxbrli:shares00010992192022-01-012022-12-3100010992192021-01-012021-12-310001099219us-gaap:PreferredStockMember2020-12-310001099219us-gaap:CommonStockMember2020-12-310001099219us-gaap:AdditionalPaidInCapitalMember2020-12-310001099219us-gaap:RetainedEarningsMember2020-12-310001099219us-gaap:TreasuryStockCommonMember2020-12-310001099219us-gaap:AccumulatedOtherComprehensiveIncomeMember2020-12-310001099219us-gaap:ParentMember2020-12-310001099219us-gaap:NoncontrollingInterestMember2020-12-3100010992192020-12-310001099219srt:CumulativeEffectPeriodOfAdoptionAdjustmentMemberus-gaap:RetainedEarningsMember2020-12-310001099219srt:CumulativeEffectPeriodOfAdoptionAdjustmentMemberus-gaap:AccumulatedOtherComprehensiveIncomeMember2020-12-310001099219srt:CumulativeEffectPeriodOfAdoptionAdjustmentMemberus-gaap:ParentMember2020-12-310001099219srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember2020-12-310001099219us-gaap:AdditionalPaidInCapitalMember2021-01-012021-12-310001099219us-gaap:ParentMember2021-01-012021-12-310001099219us-gaap:RetainedEarningsMember2021-01-012021-12-310001099219us-gaap:TreasuryStockCommonMember2021-01-012021-12-310001099219us-gaap:NoncontrollingInterestMember2021-01-012021-12-310001099219us-gaap:AccumulatedOtherComprehensiveIncomeMember2021-01-012021-12-310001099219us-gaap:PreferredStockMember2021-12-310001099219us-gaap:CommonStockMember2021-12-310001099219us-gaap:AdditionalPaidInCapitalMember2021-12-310001099219us-gaap:RetainedEarningsMember2021-12-310001099219us-gaap:TreasuryStockCommonMember2021-12-310001099219us-gaap:AccumulatedOtherComprehensiveIncomeMember2021-12-310001099219us-gaap:ParentMember2021-12-310001099219us-gaap:NoncontrollingInterestMember2021-12-3100010992192021-12-310001099219us-gaap:TreasuryStockCommonMember2022-01-012022-12-310001099219us-gaap:ParentMember2022-01-012022-12-310001099219us-gaap:AdditionalPaidInCapitalMember2022-01-012022-12-310001099219us-gaap:RetainedEarningsMember2022-01-012022-12-310001099219us-gaap:NoncontrollingInterestMember2022-01-012022-12-310001099219us-gaap:AccumulatedOtherComprehensiveIncomeMember2022-01-012022-12-310001099219us-gaap:PreferredStockMember2022-12-310001099219us-gaap:CommonStockMember2022-12-310001099219us-gaap:AdditionalPaidInCapitalMember2022-12-310001099219us-gaap:RetainedEarningsMember2022-12-310001099219us-gaap:TreasuryStockCommonMember2022-12-310001099219us-gaap:AccumulatedOtherComprehensiveIncomeMember2022-12-310001099219us-gaap:ParentMember2022-12-310001099219us-gaap:NoncontrollingInterestMember2022-12-310001099219us-gaap:TreasuryStockCommonMember2023-01-012023-12-310001099219us-gaap:ParentMember2023-01-012023-12-310001099219us-gaap:AdditionalPaidInCapitalMember2023-01-012023-12-310001099219us-gaap:RetainedEarningsMember2023-01-012023-12-310001099219us-gaap:NoncontrollingInterestMember2023-01-012023-12-310001099219us-gaap:AccumulatedOtherComprehensiveIncomeMember2023-01-012023-12-310001099219us-gaap:PreferredStockMember2023-12-310001099219us-gaap:CommonStockMember2023-12-310001099219us-gaap:AdditionalPaidInCapitalMember2023-12-310001099219us-gaap:RetainedEarningsMember2023-12-310001099219us-gaap:TreasuryStockCommonMember2023-12-310001099219us-gaap:AccumulatedOtherComprehensiveIncomeMember2023-12-310001099219us-gaap:ParentMember2023-12-310001099219us-gaap:NoncontrollingInterestMember2023-12-31met:Segment0001099219country:JP2023-12-31xbrli:pure0001099219srt:MinimumMemberus-gaap:MeasurementInputCreditSpreadMembercountry:JP2023-12-310001099219us-gaap:MeasurementInputCreditSpreadMembersrt:MaximumMembercountry:JP2023-12-310001099219country:KR2023-12-310001099219srt:MinimumMembercountry:KRus-gaap:MeasurementInputCreditSpreadMember2023-12-310001099219country:KRus-gaap:MeasurementInputCreditSpreadMembersrt:MaximumMember2023-12-310001099219country:CL2023-12-310001099219srt:MinimumMembercountry:CLus-gaap:MeasurementInputCreditSpreadMember2023-12-310001099219country:CLus-gaap:MeasurementInputCreditSpreadMembersrt:MaximumMember2023-12-310001099219srt:MinimumMembermet:ValueOfDistributionAgreementsAndValueOfCustomerRelationshipsAcquiredIntangibleAssetMember2023-12-310001099219srt:MaximumMembermet:ValueOfDistributionAgreementsAndValueOfCustomerRelationshipsAcquiredIntangibleAssetMember2023-12-310001099219srt:MaximumMember2023-01-012023-12-310001099219srt:MinimumMemberus-gaap:ComputerSoftwareIntangibleAssetMember2023-12-310001099219us-gaap:BuildingMembersrt:MaximumMember2023-12-310001099219us-gaap:LeaseholdImprovementsMembersrt:MaximumMember2023-12-310001099219srt:ScenarioPreviouslyReportedMember2020-12-310001099219met:ReclassificationOfCarryingAmountOfContractsAndContractFeaturesThatAreMarketRiskBenefitsMember2021-01-010001099219met:AdjustmentsForTheDifferenceBetweenPreviousCarryingAmountAndFairValueMeasurementForMarketRiskBenefitsMember2021-01-010001099219met:AdjustmentRemovalOfRelatedAmountsInAccumulatedOtherComprehensiveIncomeMember2021-01-010001099219met:AdjustmentOfFuturePolicyBenefitsToRemeasureCohortsWhereNetPremiumsExceedGrossPremiumsUnderTheModifiedRetrospectiveApproachMember2021-01-010001099219met:AdjustmentEffectOfRemeasurementOfFuturePolicyBenefitsToAnUpperMediumGradeDiscountRateMember2021-01-010001099219met:AdjustmentsForTheCumulativeEffectOfAdoptionOnAdditionalInsuranceAssetsAndLiabilitiesMember2021-01-010001099219met:OtherBalanceSheetReclassificationsUponAdoptionOfTheLDTIStandardMember2021-01-0100010992192021-01-010001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:OtherBalanceSheetReclassificationsUponAdoptionOfTheLDTIStandardMember2020-12-310001099219srt:ScenarioPreviouslyReportedMember2022-12-310001099219srt:RevisionOfPriorPeriodAccountingStandardsUpdateAdjustmentMember2022-12-310001099219srt:ScenarioPreviouslyReportedMember2022-01-012022-12-310001099219srt:RevisionOfPriorPeriodAccountingStandardsUpdateAdjustmentMember2022-01-012022-12-310001099219srt:ScenarioPreviouslyReportedMember2021-01-012021-12-310001099219srt:RevisionOfPriorPeriodAccountingStandardsUpdateAdjustmentMember2021-01-012021-12-310001099219srt:RestatementAdjustmentMember2022-01-012022-12-310001099219srt:RestatementAdjustmentMember2021-01-012021-12-310001099219srt:ScenarioPreviouslyReportedMemberus-gaap:RetainedEarningsMember2020-12-310001099219srt:RestatementAdjustmentMemberus-gaap:RetainedEarningsMember2020-12-310001099219srt:ScenarioPreviouslyReportedMembersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMemberus-gaap:RetainedEarningsMember2020-12-310001099219srt:RestatementAdjustmentMembersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMemberus-gaap:RetainedEarningsMember2020-12-310001099219srt:ScenarioPreviouslyReportedMemberus-gaap:RetainedEarningsMember2020-01-012020-12-310001099219srt:RestatementAdjustmentMemberus-gaap:RetainedEarningsMember2020-01-012020-12-310001099219us-gaap:RetainedEarningsMember2020-01-012020-12-310001099219srt:ScenarioPreviouslyReportedMemberus-gaap:RetainedEarningsMember2021-12-310001099219srt:RestatementAdjustmentMemberus-gaap:RetainedEarningsMember2021-12-310001099219srt:ScenarioPreviouslyReportedMemberus-gaap:RetainedEarningsMember2022-01-012022-12-310001099219srt:RestatementAdjustmentMemberus-gaap:RetainedEarningsMember2022-01-012022-12-310001099219srt:ScenarioPreviouslyReportedMemberus-gaap:RetainedEarningsMember2022-12-310001099219srt:RestatementAdjustmentMemberus-gaap:RetainedEarningsMember2022-12-310001099219srt:ScenarioPreviouslyReportedMemberus-gaap:AccumulatedOtherComprehensiveIncomeMember2020-12-310001099219srt:RestatementAdjustmentMemberus-gaap:AccumulatedOtherComprehensiveIncomeMember2020-12-310001099219srt:ScenarioPreviouslyReportedMembersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMemberus-gaap:AccumulatedOtherComprehensiveIncomeMember2020-12-310001099219srt:RestatementAdjustmentMembersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMemberus-gaap:AccumulatedOtherComprehensiveIncomeMember2020-12-310001099219srt:ScenarioPreviouslyReportedMemberus-gaap:AccumulatedOtherComprehensiveIncomeMember2020-01-012020-12-310001099219srt:RestatementAdjustmentMemberus-gaap:AccumulatedOtherComprehensiveIncomeMember2020-01-012020-12-310001099219us-gaap:AccumulatedOtherComprehensiveIncomeMember2020-01-012020-12-310001099219srt:ScenarioPreviouslyReportedMemberus-gaap:AccumulatedOtherComprehensiveIncomeMember2021-12-310001099219srt:RestatementAdjustmentMemberus-gaap:AccumulatedOtherComprehensiveIncomeMember2021-12-310001099219srt:ScenarioPreviouslyReportedMemberus-gaap:AccumulatedOtherComprehensiveIncomeMember2022-01-012022-12-310001099219srt:RestatementAdjustmentMemberus-gaap:AccumulatedOtherComprehensiveIncomeMember2022-01-012022-12-310001099219srt:ScenarioPreviouslyReportedMemberus-gaap:AccumulatedOtherComprehensiveIncomeMember2022-12-310001099219srt:RestatementAdjustmentMemberus-gaap:AccumulatedOtherComprehensiveIncomeMember2022-12-310001099219srt:ScenarioPreviouslyReportedMemberus-gaap:ParentMember2020-12-310001099219srt:RestatementAdjustmentMemberus-gaap:ParentMember2020-12-310001099219srt:ScenarioPreviouslyReportedMembersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMemberus-gaap:ParentMember2020-12-310001099219srt:RestatementAdjustmentMembersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMemberus-gaap:ParentMember2020-12-310001099219srt:ScenarioPreviouslyReportedMemberus-gaap:ParentMember2021-01-012021-12-310001099219srt:RestatementAdjustmentMemberus-gaap:ParentMember2021-01-012021-12-310001099219srt:ScenarioPreviouslyReportedMemberus-gaap:ParentMember2021-12-310001099219srt:RestatementAdjustmentMemberus-gaap:ParentMember2021-12-310001099219srt:ScenarioPreviouslyReportedMemberus-gaap:ParentMember2022-01-012022-12-310001099219srt:RestatementAdjustmentMemberus-gaap:ParentMember2022-01-012022-12-310001099219srt:ScenarioPreviouslyReportedMemberus-gaap:ParentMember2022-12-310001099219srt:RestatementAdjustmentMemberus-gaap:ParentMember2022-12-310001099219srt:ScenarioPreviouslyReportedMemberus-gaap:NoncontrollingInterestMember2021-12-310001099219srt:RestatementAdjustmentMemberus-gaap:NoncontrollingInterestMember2021-12-310001099219srt:ScenarioPreviouslyReportedMemberus-gaap:NoncontrollingInterestMember2022-01-012022-12-310001099219srt:RestatementAdjustmentMemberus-gaap:NoncontrollingInterestMember2022-01-012022-12-310001099219srt:ScenarioPreviouslyReportedMemberus-gaap:NoncontrollingInterestMember2022-12-310001099219srt:RestatementAdjustmentMemberus-gaap:NoncontrollingInterestMember2022-12-310001099219srt:RestatementAdjustmentMember2020-12-310001099219srt:ScenarioPreviouslyReportedMembersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMember2020-12-310001099219srt:RestatementAdjustmentMembersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMember2020-12-310001099219srt:ScenarioPreviouslyReportedMember2021-12-310001099219srt:RestatementAdjustmentMember2021-12-310001099219srt:RestatementAdjustmentMember2022-12-310001099219met:AccountingStandardsUpdate202302Membersrt:ProFormaMembersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMember2024-01-01met:segment0001099219met:GroupBenefitsSegmentMemberus-gaap:OperatingSegmentsMember2023-01-012023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:OperatingSegmentsMember2023-01-012023-12-310001099219met:AsiaSegmentMemberus-gaap:OperatingSegmentsMember2023-01-012023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:OperatingSegmentsMember2023-01-012023-12-310001099219met:EMEASegmentMemberus-gaap:OperatingSegmentsMember2023-01-012023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:OperatingSegmentsMember2023-01-012023-12-310001099219us-gaap:CorporateAndOtherMemberus-gaap:OperatingSegmentsMember2023-01-012023-12-310001099219us-gaap:OperatingSegmentsMember2023-01-012023-12-310001099219us-gaap:MaterialReconcilingItemsMember2023-01-012023-12-310001099219met:GroupBenefitsSegmentMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMember2023-12-310001099219met:AsiaSegmentMember2023-12-310001099219met:LatinAmericaSegmentMember2023-12-310001099219met:EMEASegmentMember2023-12-310001099219met:MetLifeHoldingsSegmentMember2023-12-310001099219us-gaap:CorporateAndOtherMember2023-12-310001099219met:GroupBenefitsSegmentMember2023-01-012023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMember2023-01-012023-12-310001099219met:AsiaSegmentMember2023-01-012023-12-310001099219met:LatinAmericaSegmentMember2023-01-012023-12-310001099219met:MetLifeHoldingsSegmentMember2023-01-012023-12-310001099219us-gaap:GeographicConcentrationRiskMemberus-gaap:AssetsTotalMembercountry:JP2023-01-012023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:OperatingSegmentsMember2022-01-012022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:OperatingSegmentsMember2022-01-012022-12-310001099219met:AsiaSegmentMemberus-gaap:OperatingSegmentsMember2022-01-012022-12-310001099219met:LatinAmericaSegmentMemberus-gaap:OperatingSegmentsMember2022-01-012022-12-310001099219met:EMEASegmentMemberus-gaap:OperatingSegmentsMember2022-01-012022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:OperatingSegmentsMember2022-01-012022-12-310001099219us-gaap:CorporateAndOtherMemberus-gaap:OperatingSegmentsMember2022-01-012022-12-310001099219us-gaap:OperatingSegmentsMember2022-01-012022-12-310001099219us-gaap:MaterialReconcilingItemsMember2022-01-012022-12-310001099219met:GroupBenefitsSegmentMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMember2022-12-310001099219met:AsiaSegmentMember2022-12-310001099219met:LatinAmericaSegmentMember2022-12-310001099219met:EMEASegmentMember2022-12-310001099219met:MetLifeHoldingsSegmentMember2022-12-310001099219us-gaap:CorporateAndOtherMember2022-12-310001099219met:GroupBenefitsSegmentMember2022-01-012022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMember2022-01-012022-12-310001099219met:AsiaSegmentMember2022-01-012022-12-310001099219met:LatinAmericaSegmentMember2022-01-012022-12-310001099219met:MetLifeHoldingsSegmentMember2022-01-012022-12-310001099219country:JP2022-12-310001099219us-gaap:GeographicConcentrationRiskMemberus-gaap:AssetsTotalMembercountry:JP2022-01-012022-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:OperatingSegmentsMember2021-01-012021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:OperatingSegmentsMember2021-01-012021-12-310001099219met:AsiaSegmentMemberus-gaap:OperatingSegmentsMember2021-01-012021-12-310001099219met:LatinAmericaSegmentMemberus-gaap:OperatingSegmentsMember2021-01-012021-12-310001099219met:EMEASegmentMemberus-gaap:OperatingSegmentsMember2021-01-012021-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:OperatingSegmentsMember2021-01-012021-12-310001099219us-gaap:CorporateAndOtherMemberus-gaap:OperatingSegmentsMember2021-01-012021-12-310001099219us-gaap:OperatingSegmentsMember2021-01-012021-12-310001099219us-gaap:MaterialReconcilingItemsMember2021-01-012021-12-310001099219met:GroupBenefitsSegmentMember2021-01-012021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMember2021-01-012021-12-310001099219met:AsiaSegmentMember2021-01-012021-12-310001099219met:LatinAmericaSegmentMember2021-01-012021-12-310001099219met:MetLifeHoldingsSegmentMember2021-01-012021-12-310001099219us-gaap:LifeInsuranceSegmentMember2023-01-012023-12-310001099219us-gaap:LifeInsuranceSegmentMember2022-01-012022-12-310001099219us-gaap:LifeInsuranceSegmentMember2021-01-012021-12-310001099219us-gaap:AccidentAndHealthInsuranceSegmentMember2023-01-012023-12-310001099219us-gaap:AccidentAndHealthInsuranceSegmentMember2022-01-012022-12-310001099219us-gaap:AccidentAndHealthInsuranceSegmentMember2021-01-012021-12-310001099219us-gaap:InvestmentsSegmentMember2023-01-012023-12-310001099219us-gaap:InvestmentsSegmentMember2022-01-012022-12-310001099219us-gaap:InvestmentsSegmentMember2021-01-012021-12-310001099219met:OtherProductsMember2023-01-012023-12-310001099219met:OtherProductsMember2022-01-012022-12-310001099219met:OtherProductsMember2021-01-012021-12-310001099219country:US2023-01-012023-12-310001099219country:US2022-01-012022-12-310001099219country:US2021-01-012021-12-310001099219country:JP2023-01-012023-12-310001099219country:JP2022-01-012022-12-310001099219country:JP2021-01-012021-12-310001099219met:OtherForeignCountriesMember2023-01-012023-12-310001099219met:OtherForeignCountriesMember2022-01-012022-12-310001099219met:OtherForeignCountriesMember2021-01-012021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:OneUSCustomerMember2023-01-012023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:OneUSCustomerMemberus-gaap:SalesRevenueNetMemberus-gaap:CustomerConcentrationRiskMember2023-01-012023-12-310001099219us-gaap:CustomerConcentrationRiskMember2021-01-012021-12-310001099219us-gaap:CustomerConcentrationRiskMember2022-01-012022-12-310001099219met:MetLifeMalaysiaMember2023-01-012023-12-310001099219met:MetLifeSegurosSAMember2021-01-012021-12-310001099219met:MetLifePolandAndGreeceMember2021-07-310001099219met:MetLifePolandAndGreeceMember2022-01-012022-12-310001099219met:MetLifePolandAndGreeceMember2021-01-012021-12-310001099219met:MetropolitanPropertyAndCasualtyInsuranceCompanyMember2020-01-012020-12-310001099219met:MetropolitanPropertyAndCasualtyInsuranceCompanyMember2021-01-012021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:FixedImmediateAnnuitiesMembersrt:ScenarioPreviouslyReportedMember2020-12-310001099219met:WholeAndTermLifeEndowmentsMembermet:AsiaSegmentMembersrt:ScenarioPreviouslyReportedMember2020-12-310001099219met:AsiaSegmentMemberus-gaap:AccidentAndHealthInsuranceSegmentMembersrt:ScenarioPreviouslyReportedMember2020-12-310001099219met:LatinAmericaSegmentMemberus-gaap:FixedAnnuityMembersrt:ScenarioPreviouslyReportedMember2020-12-310001099219met:MetLifeHoldingsSegmentMembermet:LongTermCareMembersrt:ScenarioPreviouslyReportedMember2020-12-310001099219us-gaap:ParticipatingLifeInsurancePolicyMembermet:MetLifeHoldingsSegmentMembersrt:ScenarioPreviouslyReportedMember2020-12-310001099219srt:ScenarioPreviouslyReportedMemberus-gaap:OtherLongdurationInsuranceProductLineMember2020-12-310001099219us-gaap:OtherShortdurationInsuranceProductLineMembersrt:ScenarioPreviouslyReportedMember2020-12-310001099219srt:ScenarioPreviouslyReportedMember2020-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:FixedImmediateAnnuitiesMember2020-12-310001099219met:WholeAndTermLifeEndowmentsMembermet:AsiaSegmentMember2020-12-310001099219met:AsiaSegmentMemberus-gaap:AccidentAndHealthInsuranceSegmentMember2020-12-310001099219met:LatinAmericaSegmentMemberus-gaap:FixedAnnuityMember2020-12-310001099219met:MetLifeHoldingsSegmentMembermet:LongTermCareMember2020-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:ParticipatingLifeInsurancePolicyMember2020-12-310001099219us-gaap:OtherLongdurationInsuranceProductLineMember2020-12-310001099219us-gaap:OtherShortdurationInsuranceProductLineMember2020-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:FixedImmediateAnnuitiesMember2021-01-010001099219met:WholeAndTermLifeEndowmentsMembermet:AsiaSegmentMember2021-01-010001099219met:AsiaSegmentMemberus-gaap:AccidentAndHealthInsuranceSegmentMember2021-01-010001099219met:LatinAmericaSegmentMemberus-gaap:FixedAnnuityMember2021-01-010001099219met:MetLifeHoldingsSegmentMembermet:LongTermCareMember2021-01-010001099219met:MetLifeHoldingsSegmentMemberus-gaap:ParticipatingLifeInsurancePolicyMember2021-01-010001099219us-gaap:OtherLongdurationInsuranceProductLineMember2021-01-010001099219us-gaap:OtherShortdurationInsuranceProductLineMember2021-01-010001099219us-gaap:VariableLifeMembermet:AsiaSegmentMember2020-12-310001099219met:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2020-12-310001099219met:MetLifeHoldingsSegmentMembermet:UniversalAndVariableLifeContractsMember2020-12-310001099219us-gaap:VariableLifeMembermet:AsiaSegmentMember2021-01-010001099219met:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2021-01-010001099219met:MetLifeHoldingsSegmentMembermet:UniversalAndVariableLifeContractsMember2021-01-010001099219met:RetirementAndIncomeSolutionsSegmentMembermet:FixedImmediateAnnuitiesMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:FixedImmediateAnnuitiesMember2022-12-310001099219met:WholeAndTermLifeEndowmentsMembermet:AsiaSegmentMember2023-12-310001099219met:WholeAndTermLifeEndowmentsMembermet:AsiaSegmentMember2022-12-310001099219met:AsiaSegmentMemberus-gaap:AccidentAndHealthInsuranceSegmentMember2023-12-310001099219met:AsiaSegmentMemberus-gaap:AccidentAndHealthInsuranceSegmentMember2022-12-310001099219met:LatinAmericaSegmentMemberus-gaap:FixedAnnuityMember2023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:FixedAnnuityMember2022-12-310001099219met:MetLifeHoldingsSegmentMembermet:LongTermCareMember2023-12-310001099219met:MetLifeHoldingsSegmentMembermet:LongTermCareMember2022-12-310001099219met:FixedImmediateAnnuitiesForDeferredProfitLiabilitiesMembermet:RetirementAndIncomeSolutionsSegmentMember2023-12-310001099219met:FixedImmediateAnnuitiesForDeferredProfitLiabilitiesMembermet:RetirementAndIncomeSolutionsSegmentMember2022-12-310001099219met:WholeAndTermLifeEndowmentsForDeferredProfitLiabilitiesMembermet:AsiaSegmentMember2023-12-310001099219met:WholeAndTermLifeEndowmentsForDeferredProfitLiabilitiesMembermet:AsiaSegmentMember2022-12-310001099219met:AccidentAndHealthInsuranceProductLineForDeferredProfitLiabilitiesMembermet:AsiaSegmentMember2023-12-310001099219met:AccidentAndHealthInsuranceProductLineForDeferredProfitLiabilitiesMembermet:AsiaSegmentMember2022-12-310001099219met:LatinAmericaSegmentMembermet:FixedAnnuityForDeferredProfitLiabilitiesMember2023-12-310001099219met:LatinAmericaSegmentMembermet:FixedAnnuityForDeferredProfitLiabilitiesMember2022-12-310001099219us-gaap:VariableLifeMembermet:AsiaSegmentMember2023-12-310001099219us-gaap:VariableLifeMembermet:AsiaSegmentMember2022-12-310001099219met:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2023-12-310001099219met:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2022-12-310001099219met:MetLifeHoldingsSegmentMembermet:UniversalAndVariableLifeContractsMember2023-12-310001099219met:MetLifeHoldingsSegmentMembermet:UniversalAndVariableLifeContractsMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:ParticipatingLifeInsurancePolicyMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:ParticipatingLifeInsurancePolicyMember2022-12-310001099219us-gaap:OtherLongdurationInsuranceProductLineMember2023-12-310001099219us-gaap:OtherLongdurationInsuranceProductLineMember2022-12-310001099219us-gaap:OtherShortdurationInsuranceProductLineMember2023-12-310001099219us-gaap:OtherShortdurationInsuranceProductLineMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:FixedImmediateAnnuitiesMember2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:FixedImmediateAnnuitiesMember2023-01-012023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:FixedImmediateAnnuitiesMember2022-01-012022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:FixedImmediateAnnuitiesMember2021-01-012021-12-310001099219met:WholeAndTermLifeEndowmentsMembermet:AsiaSegmentMember2021-12-310001099219met:WholeAndTermLifeEndowmentsMembermet:AsiaSegmentMember2023-01-012023-12-310001099219met:WholeAndTermLifeEndowmentsMembermet:AsiaSegmentMember2022-01-012022-12-310001099219met:WholeAndTermLifeEndowmentsMembermet:AsiaSegmentMember2021-01-012021-12-310001099219met:AsiaSegmentMemberus-gaap:AccidentAndHealthInsuranceSegmentMember2021-12-310001099219met:AsiaSegmentMemberus-gaap:AccidentAndHealthInsuranceSegmentMember2023-01-012023-12-310001099219met:AsiaSegmentMemberus-gaap:AccidentAndHealthInsuranceSegmentMember2022-01-012022-12-310001099219met:AsiaSegmentMemberus-gaap:AccidentAndHealthInsuranceSegmentMember2021-01-012021-12-310001099219met:LatinAmericaSegmentMemberus-gaap:FixedAnnuityMember2021-12-310001099219met:LatinAmericaSegmentMemberus-gaap:FixedAnnuityMember2023-01-012023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:FixedAnnuityMember2022-01-012022-12-310001099219met:LatinAmericaSegmentMemberus-gaap:FixedAnnuityMember2021-01-012021-12-310001099219met:MetLifeHoldingsSegmentMembermet:LongTermCareMember2021-12-310001099219met:MetLifeHoldingsSegmentMembermet:LongTermCareMember2023-01-012023-12-310001099219met:MetLifeHoldingsSegmentMembermet:LongTermCareMember2022-01-012022-12-310001099219met:MetLifeHoldingsSegmentMembermet:LongTermCareMember2021-01-012021-12-310001099219us-gaap:VariableLifeMembermet:AsiaSegmentMember2021-12-310001099219met:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2021-12-310001099219us-gaap:VariableLifeMembermet:AsiaSegmentMember2023-01-012023-12-310001099219us-gaap:VariableLifeMembermet:AsiaSegmentMember2022-01-012022-12-310001099219us-gaap:VariableLifeMembermet:AsiaSegmentMember2021-01-012021-12-310001099219met:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2023-01-012023-12-310001099219met:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2022-01-012022-12-310001099219met:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2021-01-012021-12-310001099219met:MetLifeHoldingsSegmentMembermet:UniversalAndVariableLifeContractsMember2021-12-310001099219met:MetLifeHoldingsSegmentMembermet:UniversalAndVariableLifeContractsMember2023-01-012023-12-310001099219met:MetLifeHoldingsSegmentMembermet:UniversalAndVariableLifeContractsMember2022-01-012022-12-310001099219met:MetLifeHoldingsSegmentMembermet:UniversalAndVariableLifeContractsMember2021-01-012021-12-310001099219met:FixedImmediateAnnuitiesForDeferredProfitLiabilitiesMembermet:RetirementAndIncomeSolutionsSegmentMember2023-01-012023-12-310001099219met:FixedImmediateAnnuitiesForDeferredProfitLiabilitiesMembermet:RetirementAndIncomeSolutionsSegmentMember2022-01-012022-12-310001099219met:FixedImmediateAnnuitiesForDeferredProfitLiabilitiesMembermet:RetirementAndIncomeSolutionsSegmentMember2021-01-012021-12-310001099219met:WholeAndTermLifeEndowmentsForDeferredProfitLiabilitiesMembermet:AsiaSegmentMember2023-01-012023-12-310001099219met:WholeAndTermLifeEndowmentsForDeferredProfitLiabilitiesMembermet:AsiaSegmentMember2022-01-012022-12-310001099219met:WholeAndTermLifeEndowmentsForDeferredProfitLiabilitiesMembermet:AsiaSegmentMember2021-01-012021-12-310001099219met:AccidentAndHealthInsuranceProductLineForDeferredProfitLiabilitiesMembermet:AsiaSegmentMember2023-01-012023-12-310001099219met:AccidentAndHealthInsuranceProductLineForDeferredProfitLiabilitiesMembermet:AsiaSegmentMember2022-01-012022-12-310001099219met:AccidentAndHealthInsuranceProductLineForDeferredProfitLiabilitiesMembermet:AsiaSegmentMember2021-01-012021-12-310001099219met:LatinAmericaSegmentMembermet:FixedAnnuityForDeferredProfitLiabilitiesMember2023-01-012023-12-310001099219met:LatinAmericaSegmentMembermet:FixedAnnuityForDeferredProfitLiabilitiesMember2022-01-012022-12-310001099219met:LatinAmericaSegmentMembermet:FixedAnnuityForDeferredProfitLiabilitiesMember2021-01-012021-12-310001099219us-gaap:OtherLongdurationInsuranceProductLineMember2023-01-012023-12-310001099219us-gaap:OtherLongdurationInsuranceProductLineMember2022-01-012022-12-310001099219us-gaap:OtherLongdurationInsuranceProductLineMember2021-01-012021-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberus-gaap:GroupPoliciesMember2014-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberus-gaap:GroupPoliciesMember2015-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberus-gaap:GroupPoliciesMember2016-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberus-gaap:GroupPoliciesMember2017-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberus-gaap:GroupPoliciesMember2018-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberus-gaap:GroupPoliciesMember2019-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberus-gaap:GroupPoliciesMember2020-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberus-gaap:GroupPoliciesMember2021-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberus-gaap:GroupPoliciesMember2022-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberus-gaap:GroupPoliciesMember2023-12-31met:Claims0001099219us-gaap:GroupPoliciesMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2015-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2016-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2017-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2018-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2019-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2020-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2021-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2022-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2023-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2016-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2017-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2018-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2019-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2020-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2021-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2022-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2023-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberus-gaap:GroupPoliciesMember2017-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberus-gaap:GroupPoliciesMember2018-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberus-gaap:GroupPoliciesMember2019-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberus-gaap:GroupPoliciesMember2020-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberus-gaap:GroupPoliciesMember2021-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberus-gaap:GroupPoliciesMember2022-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberus-gaap:GroupPoliciesMember2023-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2018-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2019-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2020-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2021-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2022-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2023-12-310001099219us-gaap:ShortDurationInsuranceContractAccidentYear2019Memberus-gaap:GroupPoliciesMember2019-12-310001099219us-gaap:ShortDurationInsuranceContractAccidentYear2019Memberus-gaap:GroupPoliciesMember2020-12-310001099219us-gaap:ShortDurationInsuranceContractAccidentYear2019Memberus-gaap:GroupPoliciesMember2021-12-310001099219us-gaap:ShortDurationInsuranceContractAccidentYear2019Memberus-gaap:GroupPoliciesMember2022-12-310001099219us-gaap:ShortDurationInsuranceContractAccidentYear2019Memberus-gaap:GroupPoliciesMember2023-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2020-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2021-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2022-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2023-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortDurationInsuranceContractAccidentYear2021Member2021-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortDurationInsuranceContractAccidentYear2021Member2022-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortDurationInsuranceContractAccidentYear2021Member2023-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortDurationInsuranceContractAccidentYear2022Member2022-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortDurationInsuranceContractAccidentYear2022Member2023-12-310001099219us-gaap:ShortDurationInsuranceContractAccidentYear2023Memberus-gaap:GroupPoliciesMember2023-12-310001099219us-gaap:GroupPoliciesMember2023-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberus-gaap:DisabilityInsurancePolicyMember2014-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberus-gaap:DisabilityInsurancePolicyMember2015-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberus-gaap:DisabilityInsurancePolicyMember2016-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberus-gaap:DisabilityInsurancePolicyMember2017-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberus-gaap:DisabilityInsurancePolicyMember2018-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberus-gaap:DisabilityInsurancePolicyMember2019-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberus-gaap:DisabilityInsurancePolicyMember2020-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberus-gaap:DisabilityInsurancePolicyMember2021-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberus-gaap:DisabilityInsurancePolicyMember2022-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberus-gaap:DisabilityInsurancePolicyMember2023-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2015-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2016-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2017-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2018-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2019-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2020-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2021-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2022-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2023-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2016-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2017-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2018-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2019-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2020-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2021-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2022-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2023-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberus-gaap:DisabilityInsurancePolicyMember2017-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberus-gaap:DisabilityInsurancePolicyMember2018-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberus-gaap:DisabilityInsurancePolicyMember2019-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberus-gaap:DisabilityInsurancePolicyMember2020-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberus-gaap:DisabilityInsurancePolicyMember2021-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberus-gaap:DisabilityInsurancePolicyMember2022-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberus-gaap:DisabilityInsurancePolicyMember2023-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2018-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2019-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2020-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2021-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2022-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2023-12-310001099219us-gaap:ShortDurationInsuranceContractAccidentYear2019Memberus-gaap:DisabilityInsurancePolicyMember2019-12-310001099219us-gaap:ShortDurationInsuranceContractAccidentYear2019Memberus-gaap:DisabilityInsurancePolicyMember2020-12-310001099219us-gaap:ShortDurationInsuranceContractAccidentYear2019Memberus-gaap:DisabilityInsurancePolicyMember2021-12-310001099219us-gaap:ShortDurationInsuranceContractAccidentYear2019Memberus-gaap:DisabilityInsurancePolicyMember2022-12-310001099219us-gaap:ShortDurationInsuranceContractAccidentYear2019Memberus-gaap:DisabilityInsurancePolicyMember2023-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2020-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2021-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2022-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2023-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2021Member2021-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2021Member2022-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2021Member2023-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2022Member2022-12-310001099219us-gaap:DisabilityInsurancePolicyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2022Member2023-12-310001099219us-gaap:ShortDurationInsuranceContractAccidentYear2023Memberus-gaap:DisabilityInsurancePolicyMember2023-12-310001099219us-gaap:DisabilityInsurancePolicyMember2023-12-310001099219us-gaap:DisabilityInsurancePolicyMember2022-12-310001099219srt:MinimumMemberus-gaap:DisabilityInsurancePolicyMember2023-12-310001099219us-gaap:DisabilityInsurancePolicyMembersrt:MaximumMember2023-12-310001099219us-gaap:DisabilityInsurancePolicyMember2023-01-012023-12-310001099219us-gaap:DisabilityInsurancePolicyMember2022-01-012022-12-310001099219us-gaap:DisabilityInsurancePolicyMember2021-01-012021-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberus-gaap:GroupPoliciesMembermet:AsiaSegmentMember2014-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberus-gaap:GroupPoliciesMembermet:AsiaSegmentMember2015-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberus-gaap:GroupPoliciesMembermet:AsiaSegmentMember2016-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberus-gaap:GroupPoliciesMembermet:AsiaSegmentMember2017-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberus-gaap:GroupPoliciesMembermet:AsiaSegmentMember2018-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberus-gaap:GroupPoliciesMembermet:AsiaSegmentMember2019-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberus-gaap:GroupPoliciesMembermet:AsiaSegmentMember2020-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberus-gaap:GroupPoliciesMembermet:AsiaSegmentMember2021-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberus-gaap:GroupPoliciesMembermet:AsiaSegmentMember2022-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberus-gaap:GroupPoliciesMembermet:AsiaSegmentMember2023-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Membermet:AsiaSegmentMember2015-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Membermet:AsiaSegmentMember2016-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Membermet:AsiaSegmentMember2017-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Membermet:AsiaSegmentMember2018-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Membermet:AsiaSegmentMember2019-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Membermet:AsiaSegmentMember2020-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Membermet:AsiaSegmentMember2021-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Membermet:AsiaSegmentMember2022-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Membermet:AsiaSegmentMember2023-12-310001099219us-gaap:GroupPoliciesMembermet:AsiaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2016-12-310001099219us-gaap:GroupPoliciesMembermet:AsiaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2017-12-310001099219us-gaap:GroupPoliciesMembermet:AsiaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2018-12-310001099219us-gaap:GroupPoliciesMembermet:AsiaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2019-12-310001099219us-gaap:GroupPoliciesMembermet:AsiaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2020-12-310001099219us-gaap:GroupPoliciesMembermet:AsiaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2021-12-310001099219us-gaap:GroupPoliciesMembermet:AsiaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2022-12-310001099219us-gaap:GroupPoliciesMembermet:AsiaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2023-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberus-gaap:GroupPoliciesMembermet:AsiaSegmentMember2017-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberus-gaap:GroupPoliciesMembermet:AsiaSegmentMember2018-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberus-gaap:GroupPoliciesMembermet:AsiaSegmentMember2019-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberus-gaap:GroupPoliciesMembermet:AsiaSegmentMember2020-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberus-gaap:GroupPoliciesMembermet:AsiaSegmentMember2021-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberus-gaap:GroupPoliciesMembermet:AsiaSegmentMember2022-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberus-gaap:GroupPoliciesMembermet:AsiaSegmentMember2023-12-310001099219us-gaap:GroupPoliciesMembermet:AsiaSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2018-12-310001099219us-gaap:GroupPoliciesMembermet:AsiaSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2019-12-310001099219us-gaap:GroupPoliciesMembermet:AsiaSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2020-12-310001099219us-gaap:GroupPoliciesMembermet:AsiaSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2021-12-310001099219us-gaap:GroupPoliciesMembermet:AsiaSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2022-12-310001099219us-gaap:GroupPoliciesMembermet:AsiaSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2023-12-310001099219us-gaap:ShortDurationInsuranceContractAccidentYear2019Memberus-gaap:GroupPoliciesMembermet:AsiaSegmentMember2019-12-310001099219us-gaap:ShortDurationInsuranceContractAccidentYear2019Memberus-gaap:GroupPoliciesMembermet:AsiaSegmentMember2020-12-310001099219us-gaap:ShortDurationInsuranceContractAccidentYear2019Memberus-gaap:GroupPoliciesMembermet:AsiaSegmentMember2021-12-310001099219us-gaap:ShortDurationInsuranceContractAccidentYear2019Memberus-gaap:GroupPoliciesMembermet:AsiaSegmentMember2022-12-310001099219us-gaap:ShortDurationInsuranceContractAccidentYear2019Memberus-gaap:GroupPoliciesMembermet:AsiaSegmentMember2023-12-310001099219us-gaap:GroupPoliciesMembermet:AsiaSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2020-12-310001099219us-gaap:GroupPoliciesMembermet:AsiaSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2021-12-310001099219us-gaap:GroupPoliciesMembermet:AsiaSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2022-12-310001099219us-gaap:GroupPoliciesMembermet:AsiaSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2023-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortDurationInsuranceContractAccidentYear2021Membermet:AsiaSegmentMember2021-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortDurationInsuranceContractAccidentYear2021Membermet:AsiaSegmentMember2022-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortDurationInsuranceContractAccidentYear2021Membermet:AsiaSegmentMember2023-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortDurationInsuranceContractAccidentYear2022Membermet:AsiaSegmentMember2022-12-310001099219us-gaap:GroupPoliciesMemberus-gaap:ShortDurationInsuranceContractAccidentYear2022Membermet:AsiaSegmentMember2023-12-310001099219us-gaap:ShortDurationInsuranceContractAccidentYear2023Memberus-gaap:GroupPoliciesMembermet:AsiaSegmentMember2023-12-310001099219us-gaap:GroupPoliciesMembermet:AsiaSegmentMember2023-12-310001099219us-gaap:GroupPoliciesMembermet:AsiaSegmentMember2022-12-310001099219srt:MinimumMemberus-gaap:GroupPoliciesMembermet:AsiaSegmentMember2023-12-310001099219us-gaap:GroupPoliciesMembersrt:MaximumMembermet:AsiaSegmentMember2023-12-310001099219us-gaap:GroupPoliciesMembermet:AsiaSegmentMember2023-01-012023-12-310001099219us-gaap:GroupPoliciesMembermet:AsiaSegmentMember2022-01-012022-12-310001099219us-gaap:GroupPoliciesMembermet:AsiaSegmentMember2021-01-012021-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Membermet:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMember2014-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Membermet:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMember2015-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Membermet:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMember2016-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Membermet:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMember2017-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Membermet:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMember2018-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Membermet:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMember2019-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Membermet:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMember2020-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Membermet:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMember2021-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Membermet:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMember2022-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Membermet:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMember2023-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2015-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2016-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2017-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2018-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2019-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2020-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2021-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2022-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2023-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2016-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2017-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2018-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2019-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2020-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2021-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2022-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2023-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Membermet:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMember2017-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Membermet:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMember2018-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Membermet:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMember2019-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Membermet:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMember2020-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Membermet:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMember2021-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Membermet:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMember2022-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Membermet:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMember2023-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2018-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2019-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2020-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2021-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2022-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2023-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Member2019-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Member2020-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Member2021-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Member2022-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Member2023-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2020-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2021-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2022-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2023-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2021Member2021-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2021Member2022-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2021Member2023-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2022Member2022-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2022Member2023-12-310001099219met:LatinAmericaProtectionLifeMembermet:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2023Member2023-12-310001099219met:LatinAmericaSegmentMembermet:LatinAmericaProtectionLifeMember2023-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Membermet:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMember2014-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Membermet:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMember2015-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Membermet:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMember2016-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Membermet:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMember2017-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Membermet:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMember2018-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Membermet:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMember2019-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Membermet:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMember2020-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Membermet:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMember2021-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Membermet:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMember2022-12-310001099219us-gaap:ShortdurationInsuranceContractsAccidentYear2014Membermet:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMember2023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Membermet:LatinAmericaProtectionHealthMember2015-12-310001099219met:LatinAmericaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Membermet:LatinAmericaProtectionHealthMember2016-12-310001099219met:LatinAmericaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Membermet:LatinAmericaProtectionHealthMember2017-12-310001099219met:LatinAmericaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Membermet:LatinAmericaProtectionHealthMember2018-12-310001099219met:LatinAmericaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Membermet:LatinAmericaProtectionHealthMember2019-12-310001099219met:LatinAmericaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Membermet:LatinAmericaProtectionHealthMember2020-12-310001099219met:LatinAmericaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Membermet:LatinAmericaProtectionHealthMember2021-12-310001099219met:LatinAmericaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Membermet:LatinAmericaProtectionHealthMember2022-12-310001099219met:LatinAmericaSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Membermet:LatinAmericaProtectionHealthMember2023-12-310001099219met:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2016-12-310001099219met:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2017-12-310001099219met:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2018-12-310001099219met:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2019-12-310001099219met:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2020-12-310001099219met:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2021-12-310001099219met:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2022-12-310001099219met:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2023-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Membermet:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMember2017-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Membermet:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMember2018-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Membermet:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMember2019-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Membermet:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMember2020-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Membermet:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMember2021-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Membermet:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMember2022-12-310001099219us-gaap:ShortDurationInsuranceContractsAccidentYear2017Membermet:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMember2023-12-310001099219met:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2018-12-310001099219met:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2019-12-310001099219met:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2020-12-310001099219met:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2021-12-310001099219met:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2022-12-310001099219met:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Membermet:LatinAmericaProtectionHealthMember2019-12-310001099219met:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Membermet:LatinAmericaProtectionHealthMember2020-12-310001099219met:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Membermet:LatinAmericaProtectionHealthMember2021-12-310001099219met:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Membermet:LatinAmericaProtectionHealthMember2022-12-310001099219met:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Membermet:LatinAmericaProtectionHealthMember2023-12-310001099219met:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2020-12-310001099219met:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2021-12-310001099219met:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2022-12-310001099219met:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2021Membermet:LatinAmericaProtectionHealthMember2021-12-310001099219met:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2021Membermet:LatinAmericaProtectionHealthMember2022-12-310001099219met:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2021Membermet:LatinAmericaProtectionHealthMember2023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2022Membermet:LatinAmericaProtectionHealthMember2022-12-310001099219met:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2022Membermet:LatinAmericaProtectionHealthMember2023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2023Membermet:LatinAmericaProtectionHealthMember2023-12-310001099219met:LatinAmericaSegmentMembermet:LatinAmericaProtectionHealthMember2023-12-310001099219country:US2023-12-310001099219us-gaap:GroupPoliciesMembermet:AsiaSegmentMember2023-12-310001099219met:LatinAmericaProtectionLifeMember2023-12-310001099219met:LatinAmericaProtectionHealthMember2023-12-310001099219met:LatinAmericaSegmentMember2023-12-310001099219us-gaap:OtherInsuranceProductLineMember2023-12-310001099219us-gaap:DisposalGroupHeldforsaleNotDiscontinuedOperationsMember2023-12-310001099219us-gaap:DisposalGroupHeldforsaleNotDiscontinuedOperationsMember2022-12-310001099219us-gaap:DisposalGroupHeldforsaleNotDiscontinuedOperationsMember2021-12-310001099219us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember2023-12-310001099219us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember2022-12-310001099219us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember2021-12-310001099219srt:ScenarioPreviouslyReportedMembermet:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMember2020-12-310001099219srt:ScenarioPreviouslyReportedMembermet:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMember2020-12-310001099219srt:ScenarioPreviouslyReportedMembermet:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMember2020-12-310001099219srt:ScenarioPreviouslyReportedMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2020-12-310001099219srt:ScenarioPreviouslyReportedMembermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2020-12-310001099219srt:ScenarioPreviouslyReportedMembermet:EMEASegmentMemberus-gaap:VariableAnnuityMember2020-12-310001099219srt:ScenarioPreviouslyReportedMembermet:MetLifeHoldingsSegmentMemberus-gaap:FixedAnnuityMember2020-12-310001099219met:LifeAndOtherMembersrt:ScenarioPreviouslyReportedMembermet:MetLifeHoldingsSegmentMember2020-12-310001099219srt:ScenarioPreviouslyReportedMembermet:OtherProductsMember2020-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMembermet:ReclassificationOfCarryingAmountOfContractsAndContractFeaturesThatAreMarketRiskBenefitsMember2021-01-010001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMembermet:ReclassificationOfCarryingAmountOfContractsAndContractFeaturesThatAreMarketRiskBenefitsMember2021-01-010001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:ReclassificationOfCarryingAmountOfContractsAndContractFeaturesThatAreMarketRiskBenefitsMember2021-01-010001099219met:ReclassificationOfCarryingAmountOfContractsAndContractFeaturesThatAreMarketRiskBenefitsMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2021-01-010001099219met:ReclassificationOfCarryingAmountOfContractsAndContractFeaturesThatAreMarketRiskBenefitsMembermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2021-01-010001099219met:ReclassificationOfCarryingAmountOfContractsAndContractFeaturesThatAreMarketRiskBenefitsMembermet:EMEASegmentMemberus-gaap:VariableAnnuityMember2021-01-010001099219met:MetLifeHoldingsSegmentMembermet:ReclassificationOfCarryingAmountOfContractsAndContractFeaturesThatAreMarketRiskBenefitsMemberus-gaap:FixedAnnuityMember2021-01-010001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:ReclassificationOfCarryingAmountOfContractsAndContractFeaturesThatAreMarketRiskBenefitsMember2021-01-010001099219met:ReclassificationOfCarryingAmountOfContractsAndContractFeaturesThatAreMarketRiskBenefitsMembermet:OtherProductsMember2021-01-010001099219met:ReclassificationOfCarryingAmountOfContractsAndContractFeaturesThatAreMarketRiskBenefitsMember2021-01-010001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMembermet:OtherBalanceSheetReclassificationsUponAdoptionOfTheLDTIStandardMember2021-01-010001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMembermet:OtherBalanceSheetReclassificationsUponAdoptionOfTheLDTIStandardMember2021-01-010001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:OtherBalanceSheetReclassificationsUponAdoptionOfTheLDTIStandardMember2021-01-010001099219met:OtherBalanceSheetReclassificationsUponAdoptionOfTheLDTIStandardMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2021-01-010001099219met:OtherBalanceSheetReclassificationsUponAdoptionOfTheLDTIStandardMembermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2021-01-010001099219met:OtherBalanceSheetReclassificationsUponAdoptionOfTheLDTIStandardMembermet:EMEASegmentMemberus-gaap:VariableAnnuityMember2021-01-010001099219met:MetLifeHoldingsSegmentMembermet:OtherBalanceSheetReclassificationsUponAdoptionOfTheLDTIStandardMemberus-gaap:FixedAnnuityMember2021-01-010001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:OtherBalanceSheetReclassificationsUponAdoptionOfTheLDTIStandardMember2021-01-010001099219met:OtherBalanceSheetReclassificationsUponAdoptionOfTheLDTIStandardMembermet:OtherProductsMember2021-01-010001099219met:OtherBalanceSheetReclassificationsUponAdoptionOfTheLDTIStandardMember2021-01-010001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMember2021-01-010001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMember2021-01-010001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMember2021-01-010001099219met:AsiaSegmentMemberus-gaap:FixedAnnuityMember2021-01-010001099219met:EMEASegmentMemberus-gaap:VariableAnnuityMember2021-01-010001099219met:MetLifeHoldingsSegmentMemberus-gaap:FixedAnnuityMember2021-01-010001099219met:MetLifeHoldingsSegmentMembermet:LifeAndOtherMember2021-01-010001099219met:OtherProductsMember2021-01-010001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMember2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMember2022-12-310001099219met:AsiaSegmentMemberus-gaap:FixedAnnuityMember2023-12-310001099219met:AsiaSegmentMemberus-gaap:FixedAnnuityMember2022-12-310001099219met:EMEASegmentMemberus-gaap:VariableAnnuityMember2023-12-310001099219met:EMEASegmentMemberus-gaap:VariableAnnuityMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:FixedAnnuityMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:FixedAnnuityMember2022-12-310001099219met:MetLifeHoldingsSegmentMembermet:LifeAndOtherMember2023-12-310001099219met:MetLifeHoldingsSegmentMembermet:LifeAndOtherMember2022-12-310001099219met:OtherProductsMember2023-12-310001099219met:OtherProductsMember2022-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMember2021-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMember2020-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMember2023-01-012023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMember2022-01-012022-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMember2021-01-012021-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMemberus-gaap:GuaranteedMinimumDeathBenefitMember2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMemberus-gaap:GuaranteedMinimumDeathBenefitMember2022-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMemberus-gaap:GuaranteedMinimumDeathBenefitMember2021-12-310001099219srt:MinimumMembermet:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membersrt:MaximumMember2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2023-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2023-12-310001099219srt:MinimumMembermet:GroupBenefitsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:GroupPoliciesMember2023-12-310001099219met:GroupBenefitsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:GroupPoliciesMembersrt:MaximumMember2023-12-310001099219met:GroupBenefitsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:GroupPoliciesMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2023-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:GroupBenefitsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:GroupPoliciesMember2023-12-310001099219met:GroupBenefitsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:GroupPoliciesMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2023-12-310001099219met:GroupBenefitsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:GroupPoliciesMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2023-12-310001099219met:GroupBenefitsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:GroupPoliciesMember2023-12-310001099219srt:MinimumMembermet:GroupBenefitsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:GroupPoliciesMember2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:GroupPoliciesMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2023-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:GroupBenefitsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:GroupPoliciesMember2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:GroupPoliciesMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:GroupPoliciesMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:GroupPoliciesMember2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMembermet:PolicyholderAccountBalanceProductsWithEitherAFixedRateOrNoGuaranteedMinimumCreditingRateMember2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2023-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMember2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2023-12-310001099219srt:MinimumMembermet:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2022-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membersrt:MaximumMember2022-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2022-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2022-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2022-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2022-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2022-12-310001099219srt:MinimumMembermet:GroupBenefitsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:GroupPoliciesMember2022-12-310001099219met:GroupBenefitsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:GroupPoliciesMembersrt:MaximumMember2022-12-310001099219met:GroupBenefitsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:GroupPoliciesMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2022-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:GroupBenefitsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:GroupPoliciesMember2022-12-310001099219met:GroupBenefitsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:GroupPoliciesMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2022-12-310001099219met:GroupBenefitsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:GroupPoliciesMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2022-12-310001099219met:GroupBenefitsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:GroupPoliciesMember2022-12-310001099219srt:MinimumMembermet:GroupBenefitsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:GroupPoliciesMember2022-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:GroupPoliciesMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2022-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:GroupBenefitsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:GroupPoliciesMember2022-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:GroupPoliciesMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2022-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:GroupPoliciesMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2022-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:GroupPoliciesMember2022-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMembermet:PolicyholderAccountBalanceProductsWithEitherAFixedRateOrNoGuaranteedMinimumCreditingRateMember2022-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2022-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMember2022-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2022-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2022-12-310001099219srt:MinimumMembermet:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2021-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membersrt:MaximumMember2021-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2021-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2021-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2021-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2021-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2021-12-310001099219srt:MinimumMembermet:GroupBenefitsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:GroupPoliciesMember2021-12-310001099219met:GroupBenefitsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:GroupPoliciesMembersrt:MaximumMember2021-12-310001099219met:GroupBenefitsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:GroupPoliciesMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2021-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:GroupBenefitsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:GroupPoliciesMember2021-12-310001099219met:GroupBenefitsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:GroupPoliciesMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2021-12-310001099219met:GroupBenefitsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:GroupPoliciesMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2021-12-310001099219met:GroupBenefitsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:GroupPoliciesMember2021-12-310001099219srt:MinimumMembermet:GroupBenefitsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:GroupPoliciesMember2021-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:GroupPoliciesMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2021-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:GroupBenefitsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:GroupPoliciesMember2021-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:GroupPoliciesMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2021-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:GroupPoliciesMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2021-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:GroupPoliciesMember2021-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMembermet:PolicyholderAccountBalanceProductsWithEitherAFixedRateOrNoGuaranteedMinimumCreditingRateMember2021-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2021-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMember2021-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2021-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:GroupPoliciesMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2021-12-310001099219srt:FederalHomeLoanBankOfNewYorkMember2023-12-310001099219srt:FederalHomeLoanBankOfNewYorkMember2022-12-310001099219met:FundingAgreementsFarmerMacMember2023-12-310001099219met:FundingAgreementsFarmerMacMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMember2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMember2020-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMember2023-01-012023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMember2022-01-012022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMember2021-01-012021-12-310001099219srt:MinimumMembermet:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membersrt:MaximumMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2023-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMembermet:PolicyholderAccountBalanceProductsWithEitherAFixedRateOrNoGuaranteedMinimumCreditingRateMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2023-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2023-12-310001099219srt:MinimumMembermet:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membersrt:MaximumMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2022-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMembermet:PolicyholderAccountBalanceProductsWithEitherAFixedRateOrNoGuaranteedMinimumCreditingRateMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2022-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2022-12-310001099219srt:MinimumMembermet:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membersrt:MaximumMember2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2021-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMembermet:PolicyholderAccountBalanceProductsWithEitherAFixedRateOrNoGuaranteedMinimumCreditingRateMember2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2021-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMember2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:CapitalMarketsInvestmentProductsAndStableValueGICsMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMember2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMember2020-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMember2023-01-012023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMember2022-01-012022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMember2021-01-012021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMemberus-gaap:GuaranteedMinimumDeathBenefitMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMemberus-gaap:GuaranteedMinimumDeathBenefitMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMemberus-gaap:GuaranteedMinimumDeathBenefitMember2021-12-310001099219srt:MinimumMembermet:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membersrt:MaximumMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2023-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2023-12-310001099219srt:MinimumMembermet:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Member2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membersrt:MaximumMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2023-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Member2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Member2023-12-310001099219srt:MinimumMembermet:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2023-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceProductsWithEitherAFixedRateOrNoGuaranteedMinimumCreditingRateMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2023-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2023-12-310001099219srt:MinimumMembermet:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membersrt:MaximumMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2022-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2022-12-310001099219srt:MinimumMembermet:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Member2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membersrt:MaximumMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2022-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Member2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Member2022-12-310001099219srt:MinimumMembermet:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2022-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceProductsWithEitherAFixedRateOrNoGuaranteedMinimumCreditingRateMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2022-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2022-12-310001099219srt:MinimumMembermet:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membersrt:MaximumMember2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2021-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2021-12-310001099219srt:MinimumMembermet:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Member2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membersrt:MaximumMember2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2021-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Member2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Member2021-12-310001099219srt:MinimumMembermet:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMember2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2021-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMember2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMember2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMembermet:PolicyholderAccountBalanceProductsWithEitherAFixedRateOrNoGuaranteedMinimumCreditingRateMember2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2021-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMember2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:AnnuitiesAndRiskSolutionsMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2021-12-310001099219us-gaap:GuaranteedMinimumDeathBenefitMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2023-12-310001099219us-gaap:GuaranteedMinimumDeathBenefitMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2022-12-310001099219us-gaap:GuaranteedMinimumDeathBenefitMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2021-12-310001099219srt:MinimumMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2023-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membersrt:MaximumMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2023-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2023-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2023-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2023-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membermet:AsiaSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMembermet:UniversalAndVariableLifeContractsMember2023-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2023-12-310001099219srt:MinimumMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2023-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membersrt:MaximumMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2023-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2023-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2023-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2023-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membermet:AsiaSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMembermet:UniversalAndVariableLifeContractsMember2023-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2023-12-310001099219srt:MinimumMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2023-12-310001099219us-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2023-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2023-12-310001099219us-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2023-12-310001099219us-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMembermet:AsiaSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMembermet:UniversalAndVariableLifeContractsMember2023-12-310001099219us-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2023-12-310001099219met:PolicyholderAccountBalanceProductsWithEitherAFixedRateOrNoGuaranteedMinimumCreditingRateMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2023-12-310001099219us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2023-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2023-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2023-12-310001099219met:AsiaSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMembermet:UniversalAndVariableLifeContractsMember2023-12-310001099219srt:MinimumMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2022-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membersrt:MaximumMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2022-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2022-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2022-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2022-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membermet:AsiaSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMembermet:UniversalAndVariableLifeContractsMember2022-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2022-12-310001099219srt:MinimumMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2022-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membersrt:MaximumMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2022-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2022-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2022-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2022-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membermet:AsiaSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMembermet:UniversalAndVariableLifeContractsMember2022-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2022-12-310001099219srt:MinimumMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2022-12-310001099219us-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2022-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2022-12-310001099219us-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2022-12-310001099219us-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMembermet:AsiaSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMembermet:UniversalAndVariableLifeContractsMember2022-12-310001099219us-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2022-12-310001099219met:PolicyholderAccountBalanceProductsWithEitherAFixedRateOrNoGuaranteedMinimumCreditingRateMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2022-12-310001099219us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2022-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2022-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2022-12-310001099219met:AsiaSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMembermet:UniversalAndVariableLifeContractsMember2022-12-310001099219srt:MinimumMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2021-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membersrt:MaximumMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2021-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2021-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2021-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2021-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membermet:AsiaSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMembermet:UniversalAndVariableLifeContractsMember2021-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2021-12-310001099219srt:MinimumMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2021-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membersrt:MaximumMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2021-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2021-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2021-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2021-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membermet:AsiaSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMembermet:UniversalAndVariableLifeContractsMember2021-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2021-12-310001099219srt:MinimumMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2021-12-310001099219us-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2021-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2021-12-310001099219us-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2021-12-310001099219us-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMembermet:AsiaSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMembermet:UniversalAndVariableLifeContractsMember2021-12-310001099219us-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2021-12-310001099219met:PolicyholderAccountBalanceProductsWithEitherAFixedRateOrNoGuaranteedMinimumCreditingRateMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2021-12-310001099219us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2021-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2021-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Membermet:AsiaSegmentMembermet:UniversalAndVariableLifeContractsMember2021-12-310001099219met:AsiaSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMembermet:UniversalAndVariableLifeContractsMember2021-12-310001099219met:AsiaSegmentMemberus-gaap:FixedAnnuityMember2021-12-310001099219met:AsiaSegmentMemberus-gaap:FixedAnnuityMember2020-12-310001099219met:AsiaSegmentMemberus-gaap:FixedAnnuityMember2023-01-012023-12-310001099219met:AsiaSegmentMemberus-gaap:FixedAnnuityMember2022-01-012022-12-310001099219met:AsiaSegmentMemberus-gaap:FixedAnnuityMember2021-01-012021-12-310001099219us-gaap:GuaranteedMinimumDeathBenefitMembermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2023-12-310001099219us-gaap:GuaranteedMinimumDeathBenefitMembermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2022-12-310001099219us-gaap:GuaranteedMinimumDeathBenefitMembermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2021-12-310001099219srt:MinimumMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2023-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membersrt:MaximumMembermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2023-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2023-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2023-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2023-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2023-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2023-12-310001099219srt:MinimumMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2023-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membersrt:MaximumMembermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2023-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2023-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2023-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2023-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2023-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2023-12-310001099219met:PolicyholderAccountBalanceProductsWithEitherAFixedRateOrNoGuaranteedMinimumCreditingRateMembermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2023-12-310001099219us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2023-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2023-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2023-12-310001099219met:AsiaSegmentMemberus-gaap:FixedAnnuityMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2023-12-310001099219srt:MinimumMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2022-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membersrt:MaximumMembermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2022-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2022-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2022-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2022-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2022-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2022-12-310001099219srt:MinimumMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2022-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membersrt:MaximumMembermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2022-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2022-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2022-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2022-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2022-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2022-12-310001099219met:PolicyholderAccountBalanceProductsWithEitherAFixedRateOrNoGuaranteedMinimumCreditingRateMembermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2022-12-310001099219us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2022-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2022-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2022-12-310001099219met:AsiaSegmentMemberus-gaap:FixedAnnuityMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2022-12-310001099219srt:MinimumMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2021-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membersrt:MaximumMembermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2021-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2021-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2021-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2021-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2021-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2021-12-310001099219srt:MinimumMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2021-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membersrt:MaximumMembermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2021-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2021-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2021-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2021-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2021-12-310001099219met:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2021-12-310001099219met:PolicyholderAccountBalanceProductsWithEitherAFixedRateOrNoGuaranteedMinimumCreditingRateMembermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2021-12-310001099219us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2021-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2021-12-310001099219us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Membermet:AsiaSegmentMemberus-gaap:FixedAnnuityMember2021-12-310001099219met:AsiaSegmentMemberus-gaap:FixedAnnuityMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2021-12-310001099219met:EMEASegmentMemberus-gaap:VariableAnnuityMember2021-12-310001099219met:EMEASegmentMemberus-gaap:VariableAnnuityMember2020-12-310001099219met:EMEASegmentMemberus-gaap:VariableAnnuityMember2023-01-012023-12-310001099219met:EMEASegmentMemberus-gaap:VariableAnnuityMember2022-01-012022-12-310001099219met:EMEASegmentMemberus-gaap:VariableAnnuityMember2021-01-012021-12-310001099219us-gaap:GuaranteedMinimumDeathBenefitMembermet:EMEASegmentMemberus-gaap:VariableAnnuityMember2023-12-310001099219us-gaap:GuaranteedMinimumDeathBenefitMembermet:EMEASegmentMemberus-gaap:VariableAnnuityMember2022-12-310001099219us-gaap:GuaranteedMinimumDeathBenefitMembermet:EMEASegmentMemberus-gaap:VariableAnnuityMember2021-12-310001099219us-gaap:AnnuitizationBenefitMembermet:EMEASegmentMemberus-gaap:VariableAnnuityMember2023-12-310001099219us-gaap:AnnuitizationBenefitMembermet:EMEASegmentMemberus-gaap:VariableAnnuityMember2022-12-310001099219us-gaap:AnnuitizationBenefitMembermet:EMEASegmentMemberus-gaap:VariableAnnuityMember2021-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:FixedAnnuityMember2021-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:FixedAnnuityMember2020-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:FixedAnnuityMember2023-01-012023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:FixedAnnuityMember2022-01-012022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:FixedAnnuityMember2021-01-012021-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:GuaranteedMinimumDeathBenefitMemberus-gaap:FixedAnnuityMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:GuaranteedMinimumDeathBenefitMemberus-gaap:FixedAnnuityMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:GuaranteedMinimumDeathBenefitMemberus-gaap:FixedAnnuityMember2021-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:AnnuitizationBenefitMemberus-gaap:FixedAnnuityMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:AnnuitizationBenefitMemberus-gaap:FixedAnnuityMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:AnnuitizationBenefitMemberus-gaap:FixedAnnuityMember2021-12-310001099219srt:MinimumMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:FixedAnnuityMember2023-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membersrt:MaximumMemberus-gaap:FixedAnnuityMember2023-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMemberus-gaap:FixedAnnuityMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:FixedAnnuityMember2023-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:FixedAnnuityMember2023-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:FixedAnnuityMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2023-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:FixedAnnuityMember2023-12-310001099219srt:MinimumMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:FixedAnnuityMember2023-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membersrt:MaximumMemberus-gaap:FixedAnnuityMember2023-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMemberus-gaap:FixedAnnuityMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:FixedAnnuityMember2023-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:FixedAnnuityMember2023-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:FixedAnnuityMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2023-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:FixedAnnuityMember2023-12-310001099219srt:MinimumMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:FixedAnnuityMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMemberus-gaap:FixedAnnuityMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:FixedAnnuityMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:FixedAnnuityMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:FixedAnnuityMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:FixedAnnuityMember2023-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceProductsWithEitherAFixedRateOrNoGuaranteedMinimumCreditingRateMemberus-gaap:FixedAnnuityMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMemberus-gaap:FixedAnnuityMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:FixedAnnuityMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:FixedAnnuityMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:FixedAnnuityMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2023-12-310001099219srt:MinimumMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:FixedAnnuityMember2022-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membersrt:MaximumMemberus-gaap:FixedAnnuityMember2022-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMemberus-gaap:FixedAnnuityMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:FixedAnnuityMember2022-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:FixedAnnuityMember2022-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:FixedAnnuityMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2022-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:FixedAnnuityMember2022-12-310001099219srt:MinimumMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:FixedAnnuityMember2022-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membersrt:MaximumMemberus-gaap:FixedAnnuityMember2022-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMemberus-gaap:FixedAnnuityMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:FixedAnnuityMember2022-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:FixedAnnuityMember2022-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:FixedAnnuityMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2022-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:FixedAnnuityMember2022-12-310001099219srt:MinimumMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:FixedAnnuityMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMemberus-gaap:FixedAnnuityMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:FixedAnnuityMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:FixedAnnuityMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:FixedAnnuityMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:FixedAnnuityMember2022-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceProductsWithEitherAFixedRateOrNoGuaranteedMinimumCreditingRateMemberus-gaap:FixedAnnuityMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMemberus-gaap:FixedAnnuityMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:FixedAnnuityMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:FixedAnnuityMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:FixedAnnuityMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2022-12-310001099219srt:MinimumMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:FixedAnnuityMember2021-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membersrt:MaximumMemberus-gaap:FixedAnnuityMember2021-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMemberus-gaap:FixedAnnuityMember2021-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:FixedAnnuityMember2021-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:FixedAnnuityMember2021-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:FixedAnnuityMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2021-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:FixedAnnuityMember2021-12-310001099219srt:MinimumMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:FixedAnnuityMember2021-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membersrt:MaximumMemberus-gaap:FixedAnnuityMember2021-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMemberus-gaap:FixedAnnuityMember2021-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:FixedAnnuityMember2021-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:FixedAnnuityMember2021-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:FixedAnnuityMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2021-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:FixedAnnuityMember2021-12-310001099219srt:MinimumMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:FixedAnnuityMember2021-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMemberus-gaap:FixedAnnuityMember2021-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:FixedAnnuityMember2021-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:FixedAnnuityMember2021-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:FixedAnnuityMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2021-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:FixedAnnuityMember2021-12-310001099219met:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceProductsWithEitherAFixedRateOrNoGuaranteedMinimumCreditingRateMemberus-gaap:FixedAnnuityMember2021-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMemberus-gaap:FixedAnnuityMember2021-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:FixedAnnuityMember2021-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:FixedAnnuityMember2021-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:FixedAnnuityMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2021-12-310001099219met:MetLifeHoldingsSegmentMembermet:LifeAndOtherMember2021-12-310001099219met:MetLifeHoldingsSegmentMembermet:LifeAndOtherMember2020-12-310001099219met:MetLifeHoldingsSegmentMembermet:LifeAndOtherMember2023-01-012023-12-310001099219met:MetLifeHoldingsSegmentMembermet:LifeAndOtherMember2022-01-012022-12-310001099219met:MetLifeHoldingsSegmentMembermet:LifeAndOtherMember2021-01-012021-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:GuaranteedMinimumDeathBenefitMember2023-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:GuaranteedMinimumDeathBenefitMember2022-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:GuaranteedMinimumDeathBenefitMember2021-12-310001099219met:LifeAndOtherMembersrt:MinimumMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2023-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membersrt:MaximumMember2023-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2023-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2023-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2023-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2023-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2023-12-310001099219met:LifeAndOtherMembersrt:MinimumMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Member2023-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membersrt:MaximumMember2023-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2023-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Member2023-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2023-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2023-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Member2023-12-310001099219met:LifeAndOtherMembersrt:MinimumMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMember2023-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2023-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMember2023-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2023-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2023-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMember2023-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceProductsWithEitherAFixedRateOrNoGuaranteedMinimumCreditingRateMember2023-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2023-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Member2023-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2023-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2023-12-310001099219met:LifeAndOtherMembersrt:MinimumMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2022-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membersrt:MaximumMember2022-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2022-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2022-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2022-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2022-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2022-12-310001099219met:LifeAndOtherMembersrt:MinimumMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Member2022-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membersrt:MaximumMember2022-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2022-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Member2022-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2022-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2022-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Member2022-12-310001099219met:LifeAndOtherMembersrt:MinimumMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMember2022-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2022-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMember2022-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2022-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2022-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMember2022-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceProductsWithEitherAFixedRateOrNoGuaranteedMinimumCreditingRateMember2022-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2022-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Member2022-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2022-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2022-12-310001099219met:LifeAndOtherMembersrt:MinimumMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2021-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Membersrt:MaximumMember2021-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2021-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2021-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2021-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2021-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0001To0199Member2021-12-310001099219met:LifeAndOtherMembersrt:MinimumMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Member2021-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Membersrt:MaximumMember2021-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2021-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Member2021-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2021-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2021-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0200To0399Member2021-12-310001099219met:LifeAndOtherMembersrt:MinimumMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMember2021-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2021-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMember2021-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2021-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2021-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMember2021-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMembermet:PolicyholderAccountBalanceProductsWithEitherAFixedRateOrNoGuaranteedMinimumCreditingRateMember2021-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMember2021-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Member2021-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Member2021-12-310001099219met:LifeAndOtherMembermet:MetLifeHoldingsSegmentMemberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMember2021-12-310001099219met:AsiaSegmentMember2020-12-310001099219met:MetLifeHoldingsSegmentMember2020-12-310001099219us-gaap:OtherInsuranceProductLineMember2020-12-310001099219met:AsiaSegmentMember2021-01-010001099219met:MetLifeHoldingsSegmentMember2021-01-010001099219us-gaap:OtherInsuranceProductLineMember2021-01-010001099219met:RetirementAssuranceMembermet:AsiaSegmentMember2023-12-310001099219met:RetirementAssuranceMembermet:AsiaSegmentMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:InvestmentsSegmentMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:InvestmentsSegmentMember2022-12-310001099219us-gaap:OtherInsuranceProductLineMember2022-12-310001099219met:RetirementAssuranceMembermet:AsiaSegmentMember2021-12-310001099219met:RetirementAssuranceMembermet:AsiaSegmentMember2020-12-310001099219met:RetirementAssuranceMembermet:AsiaSegmentMember2023-01-012023-12-310001099219met:RetirementAssuranceMembermet:AsiaSegmentMember2022-01-012022-12-310001099219met:RetirementAssuranceMembermet:AsiaSegmentMember2021-01-012021-12-310001099219us-gaap:AnnuitizationBenefitMembermet:RetirementAssuranceMembermet:AsiaSegmentMember2023-12-310001099219us-gaap:AnnuitizationBenefitMembermet:RetirementAssuranceMembermet:AsiaSegmentMember2022-12-310001099219us-gaap:AnnuitizationBenefitMembermet:RetirementAssuranceMembermet:AsiaSegmentMember2021-12-310001099219us-gaap:AnnuitizationBenefitMembermet:RetirementAssuranceMembermet:AsiaSegmentMember2023-01-012023-12-310001099219us-gaap:AnnuitizationBenefitMembermet:RetirementAssuranceMembermet:AsiaSegmentMember2022-01-012022-12-310001099219us-gaap:AnnuitizationBenefitMembermet:RetirementAssuranceMembermet:AsiaSegmentMember2021-01-012021-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:VariableAnnuityMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:VariableAnnuityMember2021-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:VariableAnnuityMember2020-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:VariableAnnuityMember2023-01-012023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:VariableAnnuityMember2022-01-012022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:VariableAnnuityMember2021-01-012021-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:VariableAnnuityMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:GuaranteedMinimumDeathBenefitMemberus-gaap:VariableAnnuityMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:GuaranteedMinimumDeathBenefitMemberus-gaap:VariableAnnuityMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:GuaranteedMinimumDeathBenefitMemberus-gaap:VariableAnnuityMember2021-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:AnnuitizationBenefitMemberus-gaap:VariableAnnuityMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:AnnuitizationBenefitMemberus-gaap:VariableAnnuityMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:AnnuitizationBenefitMemberus-gaap:VariableAnnuityMember2021-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:GuaranteedMinimumDeathBenefitMemberus-gaap:VariableAnnuityMember2023-01-012023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:GuaranteedMinimumDeathBenefitMemberus-gaap:VariableAnnuityMember2022-01-012022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:GuaranteedMinimumDeathBenefitMemberus-gaap:VariableAnnuityMember2021-01-012021-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:AnnuitizationBenefitMemberus-gaap:VariableAnnuityMember2023-01-012023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:AnnuitizationBenefitMemberus-gaap:VariableAnnuityMember2022-01-012022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:AnnuitizationBenefitMemberus-gaap:VariableAnnuityMember2021-01-012021-12-310001099219us-gaap:OtherInsuranceProductLineMember2021-12-310001099219us-gaap:OtherInsuranceProductLineMember2023-01-012023-12-310001099219us-gaap:OtherInsuranceProductLineMember2022-01-012022-12-310001099219us-gaap:OtherInsuranceProductLineMember2021-01-012021-12-310001099219met:PassThroughSeparateAccountsMember2023-12-310001099219met:PassThroughSeparateAccountsMember2022-12-310001099219met:SeparateAccountsWithMinimumReturnOrAccountValueMember2023-12-310001099219met:SeparateAccountsWithMinimumReturnOrAccountValueMember2022-12-310001099219met:FundingAgreementsAndParticipatingCloseOutContractsIncludedInSeparateAccountsWithGuaranteedMinimumReturnOrAccountValueMember2023-12-310001099219met:FundingAgreementsAndParticipatingCloseOutContractsIncludedInSeparateAccountsWithGuaranteedMinimumReturnOrAccountValueMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:StableValueAndRiskSolutionsMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:StableValueAndRiskSolutionsMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:InvestmentsSegmentMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:InvestmentsSegmentMember2022-12-310001099219met:LatinAmericaSegmentMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:PensionPlansDefinedBenefitMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:StableValueAndRiskSolutionsMember2020-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:InvestmentsSegmentMember2020-12-310001099219met:LatinAmericaSegmentMemberus-gaap:PensionPlansDefinedBenefitMember2020-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:InvestmentsSegmentMember2020-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:StableValueAndRiskSolutionsMember2021-01-012021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:InvestmentsSegmentMember2021-01-012021-12-310001099219met:LatinAmericaSegmentMemberus-gaap:PensionPlansDefinedBenefitMember2021-01-012021-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:InvestmentsSegmentMember2021-01-012021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:StableValueAndRiskSolutionsMember2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:InvestmentsSegmentMember2021-12-310001099219met:LatinAmericaSegmentMemberus-gaap:PensionPlansDefinedBenefitMember2021-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:InvestmentsSegmentMember2021-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:StableValueAndRiskSolutionsMember2022-01-012022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:InvestmentsSegmentMember2022-01-012022-12-310001099219met:LatinAmericaSegmentMemberus-gaap:PensionPlansDefinedBenefitMember2022-01-012022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:InvestmentsSegmentMember2022-01-012022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:StableValueAndRiskSolutionsMember2023-01-012023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:InvestmentsSegmentMember2023-01-012023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:PensionPlansDefinedBenefitMember2023-01-012023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:InvestmentsSegmentMember2023-01-012023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:SeparateAccountDebtSecurityMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:SeparateAccountDebtSecurityMember2023-12-310001099219us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:SeparateAccountDebtSecurityMembermet:AsiaSegmentMember2023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:SeparateAccountDebtSecurityMember2023-12-310001099219us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:SeparateAccountDebtSecurityMembermet:EMEASegmentMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:SeparateAccountDebtSecurityMember2023-12-310001099219us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:SeparateAccountDebtSecurityMember2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:USGovernmentAgenciesDebtSecuritiesMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:USGovernmentAgenciesDebtSecuritiesMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:USGovernmentAgenciesDebtSecuritiesMembermet:AsiaSegmentMember2023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:USGovernmentAgenciesDebtSecuritiesMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:USGovernmentAgenciesDebtSecuritiesMembermet:EMEASegmentMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:USGovernmentAgenciesDebtSecuritiesMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:USGovernmentAgenciesDebtSecuritiesMember2023-12-310001099219us-gaap:PublicUtilitiesMembermet:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:PublicUtilitiesMemberus-gaap:SeparateAccountDebtSecurityMember2023-12-310001099219us-gaap:PublicUtilitiesMemberus-gaap:SeparateAccountDebtSecurityMembermet:AsiaSegmentMember2023-12-310001099219us-gaap:PublicUtilitiesMembermet:LatinAmericaSegmentMemberus-gaap:SeparateAccountDebtSecurityMember2023-12-310001099219us-gaap:PublicUtilitiesMemberus-gaap:SeparateAccountDebtSecurityMembermet:EMEASegmentMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PublicUtilitiesMemberus-gaap:SeparateAccountDebtSecurityMember2023-12-310001099219us-gaap:PublicUtilitiesMemberus-gaap:SeparateAccountDebtSecurityMember2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:USStatesAndPoliticalSubdivisionsMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:USStatesAndPoliticalSubdivisionsMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:USStatesAndPoliticalSubdivisionsMembermet:AsiaSegmentMember2023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:USStatesAndPoliticalSubdivisionsMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:USStatesAndPoliticalSubdivisionsMembermet:EMEASegmentMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:USStatesAndPoliticalSubdivisionsMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:USStatesAndPoliticalSubdivisionsMember2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMembermet:CommoditiesSectorMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountDebtSecurityMembermet:CommoditiesSectorMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:CommoditiesSectorMembermet:AsiaSegmentMember2023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountDebtSecurityMembermet:CommoditiesSectorMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:CommoditiesSectorMembermet:EMEASegmentMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountDebtSecurityMembermet:CommoditiesSectorMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:CommoditiesSectorMember2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMembermet:CommunicationsSectorMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountDebtSecurityMembermet:CommunicationsSectorMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:CommunicationsSectorMembermet:AsiaSegmentMember2023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountDebtSecurityMembermet:CommunicationsSectorMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:CommunicationsSectorMembermet:EMEASegmentMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountDebtSecurityMembermet:CommunicationsSectorMember2023-12-310001099219met:CommunicationsSectorMemberus-gaap:SeparateAccountDebtSecurityMember2023-12-310001099219us-gaap:ConsumerSectorMembermet:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMember2023-12-310001099219us-gaap:ConsumerSectorMembermet:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountDebtSecurityMember2023-12-310001099219us-gaap:ConsumerSectorMemberus-gaap:SeparateAccountDebtSecurityMembermet:AsiaSegmentMember2023-12-310001099219us-gaap:ConsumerSectorMembermet:LatinAmericaSegmentMemberus-gaap:SeparateAccountDebtSecurityMember2023-12-310001099219us-gaap:ConsumerSectorMemberus-gaap:SeparateAccountDebtSecurityMembermet:EMEASegmentMember2023-12-310001099219us-gaap:ConsumerSectorMembermet:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountDebtSecurityMember2023-12-310001099219us-gaap:ConsumerSectorMemberus-gaap:SeparateAccountDebtSecurityMember2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:EnergySectorMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:EnergySectorMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:EnergySectorMembermet:AsiaSegmentMember2023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:EnergySectorMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:EMEASegmentMemberus-gaap:EnergySectorMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:EnergySectorMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:EnergySectorMember2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:FinancialServicesSectorMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:FinancialServicesSectorMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:FinancialServicesSectorMembermet:AsiaSegmentMember2023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:FinancialServicesSectorMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:FinancialServicesSectorMembermet:EMEASegmentMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:FinancialServicesSectorMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:FinancialServicesSectorMember2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:CommercialAndIndustrialSectorMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:CommercialAndIndustrialSectorMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:AsiaSegmentMemberus-gaap:CommercialAndIndustrialSectorMember2023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:CommercialAndIndustrialSectorMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:EMEASegmentMemberus-gaap:CommercialAndIndustrialSectorMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:CommercialAndIndustrialSectorMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:CommercialAndIndustrialSectorMember2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:TechnologySectorMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:TechnologySectorMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:TechnologySectorMembermet:AsiaSegmentMember2023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:TechnologySectorMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:TechnologySectorMembermet:EMEASegmentMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:TechnologySectorMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:TechnologySectorMember2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMembermet:ForeignSectorMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountDebtSecurityMembermet:ForeignSectorMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:ForeignSectorMembermet:AsiaSegmentMember2023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountDebtSecurityMembermet:ForeignSectorMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:ForeignSectorMembermet:EMEASegmentMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountDebtSecurityMembermet:ForeignSectorMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:ForeignSectorMember2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:CorporateBondSecuritiesMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:CorporateBondSecuritiesMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:AsiaSegmentMemberus-gaap:CorporateBondSecuritiesMember2023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:CorporateBondSecuritiesMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:EMEASegmentMemberus-gaap:CorporateBondSecuritiesMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:CorporateBondSecuritiesMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:CorporateBondSecuritiesMember2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:BondsMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:BondsMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:AsiaSegmentMemberus-gaap:BondsMember2023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:BondsMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:EMEASegmentMemberus-gaap:BondsMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:BondsMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:BondsMember2023-12-310001099219us-gaap:SeparateAccountMortgageBackedSecurityMembermet:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountMortgageBackedSecurityMemberus-gaap:SeparateAccountDebtSecurityMember2023-12-310001099219us-gaap:SeparateAccountMortgageBackedSecurityMemberus-gaap:SeparateAccountDebtSecurityMembermet:AsiaSegmentMember2023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountMortgageBackedSecurityMemberus-gaap:SeparateAccountDebtSecurityMember2023-12-310001099219us-gaap:SeparateAccountMortgageBackedSecurityMemberus-gaap:SeparateAccountDebtSecurityMembermet:EMEASegmentMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountMortgageBackedSecurityMemberus-gaap:SeparateAccountDebtSecurityMember2023-12-310001099219us-gaap:SeparateAccountMortgageBackedSecurityMemberus-gaap:SeparateAccountDebtSecurityMember2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMembermet:AsiaSegmentMember2023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMembermet:EMEASegmentMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember2023-12-310001099219us-gaap:RedeemablePreferredStockMembermet:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMember2023-12-310001099219us-gaap:RedeemablePreferredStockMembermet:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountDebtSecurityMember2023-12-310001099219us-gaap:RedeemablePreferredStockMemberus-gaap:SeparateAccountDebtSecurityMembermet:AsiaSegmentMember2023-12-310001099219us-gaap:RedeemablePreferredStockMembermet:LatinAmericaSegmentMemberus-gaap:SeparateAccountDebtSecurityMember2023-12-310001099219us-gaap:RedeemablePreferredStockMemberus-gaap:SeparateAccountDebtSecurityMembermet:EMEASegmentMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:RedeemablePreferredStockMemberus-gaap:SeparateAccountDebtSecurityMember2023-12-310001099219us-gaap:RedeemablePreferredStockMemberus-gaap:SeparateAccountDebtSecurityMember2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:FixedMaturitiesMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:FixedMaturitiesMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:AsiaSegmentMemberus-gaap:FixedMaturitiesMember2023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:FixedMaturitiesMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:EMEASegmentMemberus-gaap:FixedMaturitiesMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:FixedMaturitiesMember2023-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:FixedMaturitiesMember2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:SeparateAccountEquitySecurityMemberus-gaap:CommercialAndIndustrialSectorMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountEquitySecurityMemberus-gaap:CommercialAndIndustrialSectorMember2023-12-310001099219us-gaap:SeparateAccountEquitySecurityMembermet:AsiaSegmentMemberus-gaap:CommercialAndIndustrialSectorMember2023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountEquitySecurityMemberus-gaap:CommercialAndIndustrialSectorMember2023-12-310001099219us-gaap:SeparateAccountEquitySecurityMembermet:EMEASegmentMemberus-gaap:CommercialAndIndustrialSectorMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountEquitySecurityMemberus-gaap:CommercialAndIndustrialSectorMember2023-12-310001099219us-gaap:SeparateAccountEquitySecurityMemberus-gaap:CommercialAndIndustrialSectorMember2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:SeparateAccountEquitySecurityMemberus-gaap:FinancialServicesSectorMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountEquitySecurityMemberus-gaap:FinancialServicesSectorMember2023-12-310001099219us-gaap:SeparateAccountEquitySecurityMemberus-gaap:FinancialServicesSectorMembermet:AsiaSegmentMember2023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountEquitySecurityMemberus-gaap:FinancialServicesSectorMember2023-12-310001099219us-gaap:SeparateAccountEquitySecurityMemberus-gaap:FinancialServicesSectorMembermet:EMEASegmentMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountEquitySecurityMemberus-gaap:FinancialServicesSectorMember2023-12-310001099219us-gaap:SeparateAccountEquitySecurityMemberus-gaap:FinancialServicesSectorMember2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:SeparateAccountEquitySecurityMembermet:PublicUtilityMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountEquitySecurityMembermet:PublicUtilityMember2023-12-310001099219us-gaap:SeparateAccountEquitySecurityMembermet:PublicUtilityMembermet:AsiaSegmentMember2023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountEquitySecurityMembermet:PublicUtilityMember2023-12-310001099219us-gaap:SeparateAccountEquitySecurityMembermet:PublicUtilityMembermet:EMEASegmentMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountEquitySecurityMembermet:PublicUtilityMember2023-12-310001099219us-gaap:SeparateAccountEquitySecurityMembermet:PublicUtilityMember2023-12-310001099219us-gaap:NonredeemablePreferredStockMembermet:GroupBenefitsSegmentMemberus-gaap:SeparateAccountEquitySecurityMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:NonredeemablePreferredStockMemberus-gaap:SeparateAccountEquitySecurityMember2023-12-310001099219us-gaap:NonredeemablePreferredStockMemberus-gaap:SeparateAccountEquitySecurityMembermet:AsiaSegmentMember2023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:NonredeemablePreferredStockMemberus-gaap:SeparateAccountEquitySecurityMember2023-12-310001099219us-gaap:NonredeemablePreferredStockMemberus-gaap:SeparateAccountEquitySecurityMembermet:EMEASegmentMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:NonredeemablePreferredStockMemberus-gaap:SeparateAccountEquitySecurityMember2023-12-310001099219us-gaap:NonredeemablePreferredStockMemberus-gaap:SeparateAccountEquitySecurityMember2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:SeparateAccountEquitySecurityMemberus-gaap:MutualFundMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountEquitySecurityMemberus-gaap:MutualFundMember2023-12-310001099219us-gaap:SeparateAccountEquitySecurityMemberus-gaap:MutualFundMembermet:AsiaSegmentMember2023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountEquitySecurityMemberus-gaap:MutualFundMember2023-12-310001099219us-gaap:SeparateAccountEquitySecurityMemberus-gaap:MutualFundMembermet:EMEASegmentMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountEquitySecurityMemberus-gaap:MutualFundMember2023-12-310001099219us-gaap:SeparateAccountEquitySecurityMemberus-gaap:MutualFundMember2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:SeparateAccountEquitySecurityMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountEquitySecurityMember2023-12-310001099219us-gaap:SeparateAccountEquitySecurityMembermet:AsiaSegmentMember2023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountEquitySecurityMember2023-12-310001099219us-gaap:SeparateAccountEquitySecurityMembermet:EMEASegmentMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountEquitySecurityMember2023-12-310001099219us-gaap:SeparateAccountEquitySecurityMember2023-12-310001099219met:OtherInvestedAssetsMembermet:GroupBenefitsSegmentMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMembermet:OtherInvestedAssetsMember2023-12-310001099219met:OtherInvestedAssetsMembermet:AsiaSegmentMember2023-12-310001099219met:LatinAmericaSegmentMembermet:OtherInvestedAssetsMember2023-12-310001099219met:OtherInvestedAssetsMembermet:EMEASegmentMember2023-12-310001099219met:MetLifeHoldingsSegmentMembermet:OtherInvestedAssetsMember2023-12-310001099219met:OtherInvestedAssetsMember2023-12-310001099219us-gaap:InvestmentsMembermet:GroupBenefitsSegmentMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:InvestmentsMember2023-12-310001099219us-gaap:InvestmentsMembermet:AsiaSegmentMember2023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:InvestmentsMember2023-12-310001099219us-gaap:InvestmentsMembermet:EMEASegmentMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:InvestmentsMember2023-12-310001099219us-gaap:InvestmentsMember2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:OtherAssetsMember2023-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:OtherAssetsMember2023-12-310001099219us-gaap:OtherAssetsMembermet:AsiaSegmentMember2023-12-310001099219met:LatinAmericaSegmentMemberus-gaap:OtherAssetsMember2023-12-310001099219us-gaap:OtherAssetsMembermet:EMEASegmentMember2023-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:OtherAssetsMember2023-12-310001099219us-gaap:OtherAssetsMember2023-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:SeparateAccountDebtSecurityMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:SeparateAccountDebtSecurityMember2022-12-310001099219us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:SeparateAccountDebtSecurityMembermet:AsiaSegmentMember2022-12-310001099219met:LatinAmericaSegmentMemberus-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:SeparateAccountDebtSecurityMember2022-12-310001099219us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:SeparateAccountDebtSecurityMembermet:EMEASegmentMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:SeparateAccountDebtSecurityMember2022-12-310001099219us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:SeparateAccountDebtSecurityMember2022-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:USGovernmentAgenciesDebtSecuritiesMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:USGovernmentAgenciesDebtSecuritiesMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:USGovernmentAgenciesDebtSecuritiesMembermet:AsiaSegmentMember2022-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:USGovernmentAgenciesDebtSecuritiesMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:USGovernmentAgenciesDebtSecuritiesMembermet:EMEASegmentMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:USGovernmentAgenciesDebtSecuritiesMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:USGovernmentAgenciesDebtSecuritiesMember2022-12-310001099219us-gaap:PublicUtilitiesMembermet:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:PublicUtilitiesMemberus-gaap:SeparateAccountDebtSecurityMember2022-12-310001099219us-gaap:PublicUtilitiesMemberus-gaap:SeparateAccountDebtSecurityMembermet:AsiaSegmentMember2022-12-310001099219us-gaap:PublicUtilitiesMembermet:LatinAmericaSegmentMemberus-gaap:SeparateAccountDebtSecurityMember2022-12-310001099219us-gaap:PublicUtilitiesMemberus-gaap:SeparateAccountDebtSecurityMembermet:EMEASegmentMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:PublicUtilitiesMemberus-gaap:SeparateAccountDebtSecurityMember2022-12-310001099219us-gaap:PublicUtilitiesMemberus-gaap:SeparateAccountDebtSecurityMember2022-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:USStatesAndPoliticalSubdivisionsMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:USStatesAndPoliticalSubdivisionsMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:USStatesAndPoliticalSubdivisionsMembermet:AsiaSegmentMember2022-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:USStatesAndPoliticalSubdivisionsMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:USStatesAndPoliticalSubdivisionsMembermet:EMEASegmentMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:USStatesAndPoliticalSubdivisionsMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:USStatesAndPoliticalSubdivisionsMember2022-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMembermet:CommoditiesSectorMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountDebtSecurityMembermet:CommoditiesSectorMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:CommoditiesSectorMembermet:AsiaSegmentMember2022-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountDebtSecurityMembermet:CommoditiesSectorMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:CommoditiesSectorMembermet:EMEASegmentMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountDebtSecurityMembermet:CommoditiesSectorMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:CommoditiesSectorMember2022-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMembermet:CommunicationsSectorMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountDebtSecurityMembermet:CommunicationsSectorMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:CommunicationsSectorMembermet:AsiaSegmentMember2022-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountDebtSecurityMembermet:CommunicationsSectorMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:CommunicationsSectorMembermet:EMEASegmentMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountDebtSecurityMembermet:CommunicationsSectorMember2022-12-310001099219met:CommunicationsSectorMemberus-gaap:SeparateAccountDebtSecurityMember2022-12-310001099219us-gaap:ConsumerSectorMembermet:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMember2022-12-310001099219us-gaap:ConsumerSectorMembermet:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountDebtSecurityMember2022-12-310001099219us-gaap:ConsumerSectorMemberus-gaap:SeparateAccountDebtSecurityMembermet:AsiaSegmentMember2022-12-310001099219us-gaap:ConsumerSectorMembermet:LatinAmericaSegmentMemberus-gaap:SeparateAccountDebtSecurityMember2022-12-310001099219us-gaap:ConsumerSectorMemberus-gaap:SeparateAccountDebtSecurityMembermet:EMEASegmentMember2022-12-310001099219us-gaap:ConsumerSectorMembermet:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountDebtSecurityMember2022-12-310001099219us-gaap:ConsumerSectorMemberus-gaap:SeparateAccountDebtSecurityMember2022-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:EnergySectorMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:EnergySectorMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:EnergySectorMembermet:AsiaSegmentMember2022-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:EnergySectorMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:EMEASegmentMemberus-gaap:EnergySectorMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:EnergySectorMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:EnergySectorMember2022-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:FinancialServicesSectorMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:FinancialServicesSectorMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:FinancialServicesSectorMembermet:AsiaSegmentMember2022-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:FinancialServicesSectorMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:FinancialServicesSectorMembermet:EMEASegmentMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:FinancialServicesSectorMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:FinancialServicesSectorMember2022-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:CommercialAndIndustrialSectorMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:CommercialAndIndustrialSectorMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:AsiaSegmentMemberus-gaap:CommercialAndIndustrialSectorMember2022-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:CommercialAndIndustrialSectorMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:EMEASegmentMemberus-gaap:CommercialAndIndustrialSectorMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:CommercialAndIndustrialSectorMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:CommercialAndIndustrialSectorMember2022-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:TechnologySectorMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:TechnologySectorMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:TechnologySectorMembermet:AsiaSegmentMember2022-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:TechnologySectorMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:TechnologySectorMembermet:EMEASegmentMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:TechnologySectorMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:TechnologySectorMember2022-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMembermet:ForeignSectorMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountDebtSecurityMembermet:ForeignSectorMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:ForeignSectorMembermet:AsiaSegmentMember2022-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountDebtSecurityMembermet:ForeignSectorMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:ForeignSectorMembermet:EMEASegmentMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountDebtSecurityMembermet:ForeignSectorMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:ForeignSectorMember2022-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:CorporateBondSecuritiesMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:CorporateBondSecuritiesMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:AsiaSegmentMemberus-gaap:CorporateBondSecuritiesMember2022-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:CorporateBondSecuritiesMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:EMEASegmentMemberus-gaap:CorporateBondSecuritiesMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:CorporateBondSecuritiesMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:CorporateBondSecuritiesMember2022-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:BondsMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:BondsMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:AsiaSegmentMemberus-gaap:BondsMember2022-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:BondsMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMembermet:EMEASegmentMemberus-gaap:BondsMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:BondsMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:BondsMember2022-12-310001099219us-gaap:SeparateAccountMortgageBackedSecurityMembermet:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountMortgageBackedSecurityMemberus-gaap:SeparateAccountDebtSecurityMember2022-12-310001099219us-gaap:SeparateAccountMortgageBackedSecurityMemberus-gaap:SeparateAccountDebtSecurityMembermet:AsiaSegmentMember2022-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountMortgageBackedSecurityMemberus-gaap:SeparateAccountDebtSecurityMember2022-12-310001099219us-gaap:SeparateAccountMortgageBackedSecurityMemberus-gaap:SeparateAccountDebtSecurityMembermet:EMEASegmentMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountMortgageBackedSecurityMemberus-gaap:SeparateAccountDebtSecurityMember2022-12-310001099219us-gaap:SeparateAccountMortgageBackedSecurityMemberus-gaap:SeparateAccountDebtSecurityMember2022-12-310001099219met:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember2022-12-310001099219met:RetirementAndIncomeSolutionsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMembermet:AsiaSegmentMember2022-12-310001099219met:LatinAmericaSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMembermet:EMEASegmentMember2022-12-310001099219met:MetLifeHoldingsSegmentMemberus-gaap:SeparateAccountDebtSecurityMemberus-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember2022-12-310001099219us-gaap:SeparateAccountDebtSecurityMemberus-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember2022-12-310001099219us-gaap:RedeemablePreferredStockMembermet:GroupBenefitsSegmentMemberus-gaap:SeparateAccountDebtSecurityMember