| Type | including |
|---|---|
| Role | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceScheduleOfInvestmentIncomeReportedAmountsByCategoryTable |
| Type | Element |
|---|---|
| Hypercube | us-gaap:ScheduleOfInvestmentIncomeReportedAmountsByCategoryTable |
| Explicit | us-gaap:InvestmentTypeAxis |
| Member | us-gaap:InvestmentTypeCategorizationMember |
| Member | us-gaap:CashAndCashEquivalentsMember |
| Member | us-gaap:MutualFundMember |
| Member | us-gaap:MoneyMarketFundsMember |
| Member | us-gaap:EquityFundsMember |
| Member | us-gaap:FixedIncomeFundsMember |
| Member | us-gaap:BalancedFundsMember |
| Member | us-gaap:DebtSecuritiesMember |
| Member | us-gaap:USTreasuryAndGovernmentMember |
| Member | us-gaap:USTreasurySecuritiesMember |
| Member | us-gaap:USGovernmentAgenciesDebtSecuritiesMember |
| Member | us-gaap:USGovernmentSponsoredEnterprisesDebtSecuritiesMember |
| Member | us-gaap:USStatesAndPoliticalSubdivisionsMember |
| Member | us-gaap:ForeignGovernmentDebtSecuritiesMember |
| Member | us-gaap:CorporateDebtSecuritiesMember |
| Member | us-gaap:DomesticCorporateDebtSecuritiesMember |
| Member | us-gaap:ForeignCorporateDebtSecuritiesMember |
| Member | us-gaap:CommercialPaperNotIncludedWithCashAndCashEquivalentsMember |
| Member | us-gaap:ConvertibleDebtSecuritiesMember |
| Member | us-gaap:AssetBackedSecuritiesMember |
| Member | us-gaap:MortgageBackedSecuritiesMember |
| Member | us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember |
| Member | us-gaap:MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember |
| Member | us-gaap:ResidentialMortgageBackedSecuritiesMember |
| Member | us-gaap:CommercialMortgageBackedSecuritiesMember |
| Member | us-gaap:CollateralizedDebtObligationsMember |
| Member | us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember |
| Member | us-gaap:InterestOnlyStripMember |
| Member | us-gaap:PrincipalOnlyStripMember |
| Member | us-gaap:FixedIncomeSecuritiesMember |
| Member | us-gaap:AuctionRateSecuritiesMember |
| Member | us-gaap:VariableRateDemandObligationMember |
| Member | us-gaap:OtherDebtSecuritiesMember |
| Member | us-gaap:EquitySecuritiesMember |
| Member | us-gaap:CommonStockMember |
| Member | us-gaap:PreferredStockMember |
| Member | us-gaap:NonredeemablePreferredStockMember |
| Member | us-gaap:RedeemablePreferredStockMember |
| Member | us-gaap:ConvertiblePreferredStockMember |
| Member | us-gaap:ContingentConvertiblePreferredStockMember |
| Member | us-gaap:FixedMaturitiesMember |
| Member | srt:PartnershipInterestMember |
| Member | us-gaap:PolicyLoansMember |
| Member | us-gaap:RealEstateInvestmentMember |
| Member | us-gaap:MortgagesMember |
| Member | us-gaap:ShortTermInvestmentsMember |
| Member | us-gaap:OtherLongTermInvestmentsMember |
| Label/QName |
|---|
us-gaap:ScheduleOfInvestmentIncomeReportedAmountsByCategoryLineItems |
us-gaap:GrossInvestmentIncomeOperating |
us-gaap:InvestmentIncomeInvestmentExpense |
us-gaap:NetInvestmentIncome |