 | us-gaap:StatementTable | parent-child | http://fasb.org/us-gaap/role/statement/CommonDomainMembers |
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 | us-gaap:StatementTable | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfIncomeAlternative |
 | us-gaap:StatementTable | hypercube-dimension | http://fasb.org/us-gaap/role/statement/StatementOfIncomeAlternativeStatementTable |
 | us-gaap:StatementTable | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfIncomeRealEstateExcludingREITs |
 | us-gaap:StatementTable | hypercube-dimension | http://fasb.org/us-gaap/role/statement/StatementOfIncomeRealEstateExcludingREITsStatementTable |
 | us-gaap:StatementTable | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfIncomeRealEstateInvestmentTrusts |
 | us-gaap:StatementTable | hypercube-dimension | http://fasb.org/us-gaap/role/statement/StatementOfIncomeRealEstateInvestmentTrustsStatementTable |
 | us-gaap:StatementTable | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfIncome |
 | us-gaap:StatementTable | hypercube-dimension | http://fasb.org/us-gaap/role/statement/StatementOfIncomeStatementTable |
 | us-gaap:StatementTable | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfIncomeInterestBasedRevenue |
 | us-gaap:StatementTable | hypercube-dimension | http://fasb.org/us-gaap/role/statement/StatementOfIncomeInterestBasedRevenueStatementTable |
 | us-gaap:StatementTable | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfIncomeInsuranceBasedRevenue |
 | us-gaap:StatementTable | hypercube-dimension | http://fasb.org/us-gaap/role/statement/StatementOfIncomeInsuranceBasedRevenueStatementTable |
 | us-gaap:StatementTable | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfIncomeSecuritiesBasedIncome |
 | us-gaap:StatementTable | hypercube-dimension | http://fasb.org/us-gaap/role/statement/StatementOfIncomeSecuritiesBasedIncomeStatementTable |
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 | us-gaap:ScheduleOfProductInformationTable | parent-child | http://fasb.org/us-gaap/role/disclosure/OrganizationConsolidationAndPresentationOfFinancialStatements |
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 | us-gaap:ScheduleOfProductInformationTable | hypercube-dimension | http://fasb.org/us-gaap/role/disclosure/AccountingPoliciesScheduleOfProductInformationTable |
 | us-gaap:ScheduleOfAccountsNotesLoansAndFinancingReceivableTable | parent-child | http://fasb.org/us-gaap/role/disclosure/ReceivablesLoansNotesReceivableAndOthers |
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 | us-gaap:ProductLiabilityContingencyTable | parent-child | http://fasb.org/us-gaap/role/disclosure/CommitmentAndContingencies |
 | us-gaap:ProductLiabilityContingencyTable | hypercube-dimension | http://fasb.org/us-gaap/role/disclosure/CommitmentAndContingenciesProductLiabilityContingencyTable |
 | us-gaap:ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable | parent-child | http://fasb.org/us-gaap/role/disclosure/SegmentReporting |
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 | us-gaap:PrincipleTransactionRevenueTable | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBrokersAndDealers |
 | us-gaap:PrincipleTransactionRevenueTable | hypercube-dimension | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBrokersAndDealersPrincipleTransactionRevenueTable |
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 | us-gaap:LiabilityForClaimsAndClaimsAdjustmentExpenseTable | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance |
 | us-gaap:LiabilityForFuturePolicyBenefitByProductSegmentTable | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance |
 | us-gaap:LongDurationContractsAssumptionsByProductAndGuaranteeTable | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance |
 | us-gaap:NetAmountAtRiskByProductAndGuaranteeTable | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance |
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 | us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationTable | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance |
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 | us-gaap:EffectsOfReinsuranceTable | hypercube-dimension | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceEffectsOfReinsuranceTable |
 | us-gaap:LiabilitiesForGuaranteesOnLongDurationContractsTable | hypercube-dimension | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceLiabilitiesForGuaranteesOnLongDurationContractsTable |
 | us-gaap:LiabilityForClaimsAndClaimsAdjustmentExpenseTable | hypercube-dimension | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceLiabilityForClaimsAndClaimsAdjustmentExpenseTable |
 | us-gaap:LiabilityForFuturePolicyBenefitByProductSegmentTable | hypercube-dimension | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceLiabilityForFuturePolicyBenefitByProductSegmentTable |
 | us-gaap:LongDurationContractsAssumptionsByProductAndGuaranteeTable | hypercube-dimension | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceLongDurationContractsAssumptionsByProductAndGuaranteeTable |
 | us-gaap:NetAmountAtRiskByProductAndGuaranteeTable | hypercube-dimension | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceNetAmountAtRiskByProductAndGuaranteeTable |
 | us-gaap:ShortdurationInsuranceContractsClaimsDevelopmentTable | hypercube-dimension | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceShortdurationInsuranceContractsClaimsDevelopmentTable |
 | us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationTable | hypercube-dimension | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceShortdurationInsuranceContractsHistoricalClaimsDurationTable |
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 | us-gaap:DisaggregationOfRevenueTable | hypercube-dimension | http://fasb.org/us-gaap/role/disclosure/RevenuefromContractswithCustomersDisaggregationOfRevenueTable |
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 | us-gaap:DeferredPolicyAcquisitionCostTable | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceA |
 | us-gaap:DeferredPolicyAcquisitionCostAndPresentValueOfFutureProfitTable | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceA |
 | us-gaap:DeferredSaleInducementCostTable | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceA |
 | us-gaap:FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceA |
 | us-gaap:LiabilityForFuturePolicyBenefitActivityTable | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceA |
 | us-gaap:MarketRiskBenefitTable | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceA |
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 | us-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateTable | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceA |
 | us-gaap:PresentValueOfFutureInsuranceProfitTable | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceA |
 | us-gaap:SeparateAccountLiabilityTable | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceA |
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 | us-gaap:DeferredPolicyAcquisitionCostAndPresentValueOfFutureProfitTable | hypercube-dimension | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceADeferredPolicyAcquisitionCostAndPresentValueOfFutureProfitTable |
 | us-gaap:DeferredPolicyAcquisitionCostTable | hypercube-dimension | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceADeferredPolicyAcquisitionCostTable |
 | us-gaap:DeferredSaleInducementCostTable | hypercube-dimension | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceADeferredSaleInducementCostTable |
 | us-gaap:FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable | hypercube-dimension | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceAFairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable |
 | us-gaap:LiabilityForFuturePolicyBenefitActivityTable | hypercube-dimension | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceALiabilityForFuturePolicyBenefitActivityTable |
 | us-gaap:MarketRiskBenefitTable | hypercube-dimension | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceAMarketRiskBenefitTable |
 | us-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateTable | hypercube-dimension | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceAPolicyholderAccountBalanceGuaranteedMinimumCreditingRateTable |
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 | us-gaap:PresentValueOfFutureInsuranceProfitTable | hypercube-dimension | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceAPresentValueOfFutureInsuranceProfitTable |
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