| Type | including |
|---|---|
| Role | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceLiabilityForFuturePolicyBenefitByProductSegmentTable |
| Type | Element |
|---|---|
| Hypercube | us-gaap:LiabilityForFuturePolicyBenefitByProductSegmentTable |
| Explicit | srt:ProductOrServiceAxis |
| Member | srt:ProductsAndServicesDomain |
| Member | us-gaap:AccidentAndHealthInsuranceSegmentMember |
| Member | us-gaap:AccidentAndHealthInsuranceExcludingWorkersCompensationMember |
| Member | us-gaap:DisabilityInsurancePolicyMember |
| Member | us-gaap:HealthInsuranceProductLineMember |
| Member | us-gaap:WorkersCompensationInsuranceMember |
| Member | us-gaap:FinancialGuaranteeInsuranceSegmentMember |
| Member | us-gaap:FixedAnnuityMember |
| Member | us-gaap:DeferredFixedAnnuityMember |
| Member | us-gaap:ImmediateFixedAnnuityMember |
| Member | us-gaap:TerminalFundingAnnuityMember |
| Member | us-gaap:GroupPoliciesMember |
| Member | us-gaap:GuaranteedInvestmentContractMember |
| Member | us-gaap:IndexedAnnuityMember |
| Member | us-gaap:IndividualPoliciesMember |
| Member | us-gaap:InvestmentsSegmentMember |
| Member | us-gaap:LifeAndAnnuityInsuranceProductLineMember |
| Member | us-gaap:LifeInsuranceSegmentMember |
| Member | us-gaap:InterestSensitiveLifeMember |
| Member | us-gaap:NonparticipatingLifeInsurancePolicyMember |
| Member | us-gaap:ParticipatingLifeInsurancePolicyMember |
| Member | us-gaap:TermLifeInsuranceMember |
| Member | us-gaap:UniversalLifeMember |
| Member | us-gaap:VariableLifeMember |
| Member | us-gaap:VariableUniversalLifeMember |
| Member | us-gaap:WholeLifeInsuranceMember |
| Member | us-gaap:NontraditionalLongDurationContractsMember |
| Member | us-gaap:OtherInsuranceProductLineMember |
| Member | us-gaap:OtherLongdurationInsuranceProductLineMember |
| Member | us-gaap:OtherShortdurationInsuranceProductLineMember |
| Member | us-gaap:ProfessionalLiabilityInsuranceMember |
| Member | us-gaap:PropertyLiabilityAndCasualtyInsuranceSegmentMember |
| Member | us-gaap:PropertyAndCasualtyCommercialInsuranceProductLineMember |
| Member | us-gaap:PropertyAndCasualtyPersonalInsuranceProductLineMember |
| Member | us-gaap:PropertyInsuranceProductLineMember |
| Member | us-gaap:StructuredSettlementAnnuityMember |
| Member | us-gaap:SuretySegmentMember |
| Member | us-gaap:TitleInsuranceSegmentMember |
| Member | us-gaap:VariableAnnuityMember |
| Member | us-gaap:DeferredVariableAnnuityMember |
| Member | us-gaap:ImmediateVariableAnnuityMember |
| Explicit | srt:RangeAxis |
| Member | srt:RangeMember |
| Member | srt:MaximumMember |
| Member | srt:MinimumMember |
| Member | srt:WeightedAverageMember |
| Member | srt:MedianMember |
| Member | srt:ArithmeticAverageMember |
| Label/QName |
|---|
us-gaap:LiabilityForFuturePolicyBenefitByProductSegmentLineItems |
us-gaap:LiabilityForFuturePolicyBenefitsAndPolicyholderContractDepositsAssumptionsAbstract |
us-gaap:LiabilityForFuturePolicyBenefitsAssumptionsAbstract |
us-gaap:LiabilityForFuturePolicyBenefitsMethodologyAndAssumptions |
us-gaap:LiabilityForFuturePolicyBenefitsInterestRateAssumption |
us-gaap:LiabilityForFuturePolicyBenefitsInterestRate |
us-gaap:MortalityMorbidityAndSurrenderRateAssumption |
us-gaap:LiabilityForPolicyholderContractDepositsAssumptionsAbstract |
us-gaap:LiabilityForPolicyholderContractDepositsGeneralAssumptions |
us-gaap:LiabilityForPolicyholderContractDepositsInterestRate |
us-gaap:PolicyholderContractDeposits |
us-gaap:LiabilityForFuturePolicyBenefitByProductSegmentPolicyIssueYearRange |
us-gaap:LiabilityForFuturePolicyBenefitByProductSegmentInterestRateYearOfIssue |