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Investments and Derivative Instruments Level 4 Net Realized Capital Gains (Losses) (Details) (USD $)
 3 Months Ended 12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Jun. 30, 2014
Dec. 31, 2014
Net Realized Capital Gains (Losses) [Line Items]        
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss $ 103,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss     $ 142,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax 2,565,000,000us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax     2,374,000,000us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss 141,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss     208,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 38,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss     66,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
Net Realized Capital Gains (Losses) Table [Abstract]        
Gain on Derivative Instruments, Pretax 119,000,000us-gaap_GainOnDerivativeInstrumentsPretax [1] 108,000,000us-gaap_GainOnDerivativeInstrumentsPretax [1]    
Loss on Derivative Instruments, Pretax 95,000,000us-gaap_LossOnDerivativeInstrumentsPretax 104,000,000us-gaap_LossOnDerivativeInstrumentsPretax    
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net (6,000,000)us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet (7,000,000)us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet    
Periodic Net Coupon Settlements on Credit Derivatives 1,000,000hlic_PeriodicNetCouponSettlementsOnCreditDerivatives 5,000,000hlic_PeriodicNetCouponSettlementsOnCreditDerivatives    
Aggregate Results of Variable Annuity Hedge Program (3,000,000)hlic_AggregateResultsofVariableAnnuityHedgeProgramGainLoss (18,000,000)hlic_AggregateResultsofVariableAnnuityHedgeProgramGainLoss    
Gain (Loss) on Reinsurance Recoverables 0hlic_GainLossOnReinsuranceRecoverables 51,000,000hlic_GainLossOnReinsuranceRecoverables    
Gain (Loss) on Coinsurance and Modified Coinsurance Reinsurance Contracts (11,000,000)hlic_GainLossOnCoinsuranceAndModifiedCoinsuranceReinsuranceContracts (130,000,000)hlic_GainLossOnCoinsuranceAndModifiedCoinsuranceReinsuranceContracts    
Other Net Realized Capital Gains Losses (10,000,000)hlic_OtherNetRealizedCapitalGainsLosses (2,000,000)hlic_OtherNetRealizedCapitalGainsLosses    
Realized Investment Gains (Losses) (9,000,000)us-gaap_RealizedInvestmentGainsLosses (106,000,000)us-gaap_RealizedInvestmentGainsLosses    
Net Realized Capital Gains (Losses) Footnote [Abstract]        
Gain (Loss) on Investments, Excluding Other than Temporary Impairments (3,000,000)us-gaap_GainLossOnInvestmentsExcludingOtherThanTemporaryImpairments (99,000,000)us-gaap_GainLossOnInvestmentsExcludingOtherThanTemporaryImpairments    
Derivative, Gain (Loss) on Derivative, Net (27,000,000)us-gaap_DerivativeGainLossOnDerivativeNet (71,000,000)us-gaap_DerivativeGainLossOnDerivativeNet    
Proceeds from Sale of Available-for-sale Securities 3,100,000,000us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities 3,500,000,000us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities    
UNITED STATES        
Net Realized Capital Gains (Losses) Table [Abstract]        
Results of Variable Annuity Hedge Program (3,000,000)hlic_ResultsofVariableAnnuityHedgeProgramGainLoss
/ invest_InvestmentGeographicRegionAxis
= country_US		 5,000,000hlic_ResultsofVariableAnnuityHedgeProgramGainLoss
/ invest_InvestmentGeographicRegionAxis
= country_US		    
UNITED STATES | GMWB Derivatives, Net [Member]        
Net Realized Capital Gains (Losses) Table [Abstract]        
Results of Variable Annuity Hedge Program 1,000,000hlic_ResultsofVariableAnnuityHedgeProgramGainLoss
/ invest_InvestmentGeographicRegionAxis
= country_US
/ hlic_ResultsOfVariableAnnuityHedgeProgramByDerivativeInstrumentRiskAxis
= hlic_GmwbDerivativesNetMember		 15,000,000hlic_ResultsofVariableAnnuityHedgeProgramGainLoss
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= country_US
/ hlic_ResultsOfVariableAnnuityHedgeProgramByDerivativeInstrumentRiskAxis
= hlic_GmwbDerivativesNetMember		    
UNITED STATES | Macro Hedge Program [Member]        
Net Realized Capital Gains (Losses) Table [Abstract]        
Results of Variable Annuity Hedge Program (4,000,000)hlic_ResultsofVariableAnnuityHedgeProgramGainLoss
/ invest_InvestmentGeographicRegionAxis
= country_US
/ hlic_ResultsOfVariableAnnuityHedgeProgramByDerivativeInstrumentRiskAxis
= hlic_MacroHedgeProgramMember		 (10,000,000)hlic_ResultsofVariableAnnuityHedgeProgramGainLoss
/ invest_InvestmentGeographicRegionAxis
= country_US
/ hlic_ResultsOfVariableAnnuityHedgeProgramByDerivativeInstrumentRiskAxis
= hlic_MacroHedgeProgramMember		    
International [Member]        
Net Realized Capital Gains (Losses) Table [Abstract]        
Results of Variable Annuity Hedge Program 0hlic_ResultsofVariableAnnuityHedgeProgramGainLoss
/ invest_InvestmentGeographicRegionAxis
= hlic_InternationalMember		 [2] (23,000,000)hlic_ResultsofVariableAnnuityHedgeProgramGainLoss
/ invest_InvestmentGeographicRegionAxis
= hlic_InternationalMember		 [2]    
Net Realized Capital Gains (Losses) Footnote [Abstract]        
Foreign Currency Transaction Gain (Loss), before Tax   3,000,000us-gaap_ForeignCurrencyTransactionGainLossBeforeTax
/ invest_InvestmentGeographicRegionAxis
= hlic_InternationalMember		    
Fixed Annuity Hedging Instruments [Member] | JAPAN        
Net Realized Capital Gains (Losses) Footnote [Abstract]        
Associated Liability Adjusted for Changes in Spot Rates Through Realized Capital Gain   (30,000,000)hlic_AssociatedLiabilityAdjustedForChangesInSpotRatesThroughRealizedCapitalGain
/ us-gaap_DerivativeInstrumentRiskAxis
= hlic_FixedAnnuityHedgingInstrumentsMember
/ invest_InvestmentGeographicRegionAxis
= country_JP		    
Derivative, Gain (Loss) on Derivative, Net 0us-gaap_DerivativeGainLossOnDerivativeNet
/ us-gaap_DerivativeInstrumentRiskAxis
= hlic_FixedAnnuityHedgingInstrumentsMember
/ invest_InvestmentGeographicRegionAxis
= country_JP		 [3] 12,000,000us-gaap_DerivativeGainLossOnDerivativeNet
/ us-gaap_DerivativeInstrumentRiskAxis
= hlic_FixedAnnuityHedgingInstrumentsMember
/ invest_InvestmentGeographicRegionAxis
= country_JP		 [3]    
Three Win Related Foreign Currency Swaps [Member] | JAPAN        
Net Realized Capital Gains (Losses) Footnote [Abstract]        
Associated Liability Adjusted for Changes in Spot Rates Through Realized Capital Gain 0hlic_AssociatedLiabilityAdjustedForChangesInSpotRatesThroughRealizedCapitalGain
/ us-gaap_DerivativeInstrumentRiskAxis
= hlic_ThreeWinRelatedForeignCurrencySwapsMember
/ invest_InvestmentGeographicRegionAxis
= country_JP		 (28,000,000)hlic_AssociatedLiabilityAdjustedForChangesInSpotRatesThroughRealizedCapitalGain
/ us-gaap_DerivativeInstrumentRiskAxis
= hlic_ThreeWinRelatedForeignCurrencySwapsMember
/ invest_InvestmentGeographicRegionAxis
= country_JP		    
Derivative, Gain (Loss) on Derivative, Net 0us-gaap_DerivativeGainLossOnDerivativeNet
/ us-gaap_DerivativeInstrumentRiskAxis
= hlic_ThreeWinRelatedForeignCurrencySwapsMember
/ invest_InvestmentGeographicRegionAxis
= country_JP		 (9,000,000)us-gaap_DerivativeGainLossOnDerivativeNet
/ us-gaap_DerivativeInstrumentRiskAxis
= hlic_ThreeWinRelatedForeignCurrencySwapsMember
/ invest_InvestmentGeographicRegionAxis
= country_JP		    
Change in value of derivatives and Japan FVO securities [Member]        
Net Realized Capital Gains (Losses) Footnote [Abstract]        
Foreign Currency Transaction Gain (Loss), before Tax   21,000,000us-gaap_ForeignCurrencyTransactionGainLossBeforeTax
/ hlic_ForeignCurrencyReValuationAxis
= hlic_ChangeinvalueofderivativesandJapanFVOsecuritiesMember		    
White River Life Reinsurance [Member]        
Net Realized Capital Gains (Losses) Footnote [Abstract]        
Loss on Contract Termination     213,000,000us-gaap_LossOnContractTermination
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= hlic_WhiteRiverLifeReinsuranceMember		 213,000,000us-gaap_LossOnContractTermination
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= hlic_WhiteRiverLifeReinsuranceMember
Mortgage Loans on Real Estate [Member]        
Net Realized Capital Gains (Losses) Table [Abstract]        
Valuation Allowances and Reserves, Adjustments (4,000,000)us-gaap_ValuationAllowancesAndReservesAdjustments
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_MortgageLoansOnRealEstateMember		 0us-gaap_ValuationAllowancesAndReservesAdjustments
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_MortgageLoansOnRealEstateMember		    
Accumulated Net Unrealized Investment Gain (Loss) [Member]        
Net Realized Capital Gains (Losses) Footnote [Abstract]        
Gain (Loss) on Investments, Excluding Other than Temporary Impairments   3,000,000us-gaap_GainLossOnInvestmentsExcludingOtherThanTemporaryImpairments
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember		    
Accumulated Net Unrealized Investment Gain (Loss) [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]        
Net Realized Capital Gains (Losses) Footnote [Abstract]        
Gain (Loss) on Investments, Excluding Other than Temporary Impairments 18,000,000us-gaap_GainLossOnInvestmentsExcludingOtherThanTemporaryImpairments
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember
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= us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember		 3,000,000us-gaap_GainLossOnInvestmentsExcludingOtherThanTemporaryImpairments
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= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember
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= us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember		    
Municipal Bonds [Member]        
Net Realized Capital Gains (Losses) [Line Items]        
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 0us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_MunicipalBondsMember		     1,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
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= us-gaap_MunicipalBondsMember
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss 0us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_MunicipalBondsMember		     1,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_MunicipalBondsMember
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 0us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_MunicipalBondsMember		     0us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
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= us-gaap_MunicipalBondsMember
Asset-backed Securities [Member]        
Net Realized Capital Gains (Losses) [Line Items]        
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 30,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_AssetBackedSecuritiesMember		     29,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_AssetBackedSecuritiesMember
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax 24,000,000us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_AssetBackedSecuritiesMember		     20,000,000us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_AssetBackedSecuritiesMember
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss 30,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_AssetBackedSecuritiesMember		     30,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_AssetBackedSecuritiesMember
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 0us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_AssetBackedSecuritiesMember		     1,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_AssetBackedSecuritiesMember
Corporate Debt Securities [Member]        
Net Realized Capital Gains (Losses) [Line Items]        
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 30,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CorporateDebtSecuritiesMember		     58,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CorporateDebtSecuritiesMember
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax 1,800,000,000us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CorporateDebtSecuritiesMember		     1,685,000,000us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CorporateDebtSecuritiesMember
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss 60,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CorporateDebtSecuritiesMember		     109,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CorporateDebtSecuritiesMember
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 30,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CorporateDebtSecuritiesMember		     51,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CorporateDebtSecuritiesMember
Debt Securities [Member]        
Net Realized Capital Gains (Losses) [Line Items]        
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 90,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_DebtSecuritiesMember		     129,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_DebtSecuritiesMember
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax 2,554,000,000us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_DebtSecuritiesMember		     2,364,000,000us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_DebtSecuritiesMember
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss 125,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_DebtSecuritiesMember		     189,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_DebtSecuritiesMember
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 35,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_DebtSecuritiesMember		     60,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_DebtSecuritiesMember
Equity Securities [Member]        
Net Realized Capital Gains (Losses) [Line Items]        
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 13,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_EquitySecuritiesMember		     13,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_EquitySecuritiesMember
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax 11,000,000us-gaap_AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedGainBeforeTax
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_EquitySecuritiesMember		     10,000,000us-gaap_AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedGainBeforeTax
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_EquitySecuritiesMember
Available-for-sale Equity Securities, Accumulated Gross Unrealized Loss, before Tax 16,000,000us-gaap_AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedLossBeforeTax
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_EquitySecuritiesMember		     19,000,000us-gaap_AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedLossBeforeTax
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_EquitySecuritiesMember
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss 16,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_EquitySecuritiesMember		     19,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_EquitySecuritiesMember
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 3,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_EquitySecuritiesMember		     6,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_EquitySecuritiesMember
Foreign Government Debt Securities [Member]        
Net Realized Capital Gains (Losses) [Line Items]        
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 1,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ForeignGovernmentDebtSecuritiesMember		     4,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ForeignGovernmentDebtSecuritiesMember
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax 27,000,000us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ForeignGovernmentDebtSecuritiesMember		     35,000,000us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ForeignGovernmentDebtSecuritiesMember
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss 3,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ForeignGovernmentDebtSecuritiesMember		     9,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ForeignGovernmentDebtSecuritiesMember
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 2,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ForeignGovernmentDebtSecuritiesMember		     5,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ForeignGovernmentDebtSecuritiesMember
US States and Political Subdivisions Debt Securities [Member]        
Net Realized Capital Gains (Losses) [Line Items]        
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax 133,000,000us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember		     118,000,000us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember
Residential Mortgage Backed Securities [Member]        
Net Realized Capital Gains (Losses) [Line Items]        
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 10,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ResidentialMortgageBackedSecuritiesMember		     11,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ResidentialMortgageBackedSecuritiesMember
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax 68,000,000us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ResidentialMortgageBackedSecuritiesMember		     64,000,000us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ResidentialMortgageBackedSecuritiesMember
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss 10,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ResidentialMortgageBackedSecuritiesMember		     12,000,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ResidentialMortgageBackedSecuritiesMember
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 0us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
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US Treasury Securities [Member]        
Net Realized Capital Gains (Losses) [Line Items]        
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Collateralized Debt Obligations [Member]        
Net Realized Capital Gains (Losses) [Line Items]        
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Net Realized Capital Gains (Losses) [Line Items]        
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[1] Includes gains (losses) of $(30) for the three months ended March 31, 2014 on transactional foreign currency re-valuation related to the Japan fixed annuity product. Also includes gains (losses) of $21 for the three months ended March 31, 2014, due to change in value related to the derivative hedging instruments and the Japan government FVO securities.
[2] Other, net gains and losses include transactional foreign currency revaluation gains (losses) on the Japan fixed payout annuity liabilities reinsured from HLIKK and gains (losses) on non-qualifying derivatives used to hedge the foreign currency exposure of the liabilities. Gains (losses) from transactional foreign currency revaluation of the reinsured liabilities were $0 and $(28), respectively, for the three months ended March 31, 2015 and 2014. Gains (losses) on instruments used to hedge the foreign currency exposure on the reinsured fixed payout annuities were $(14) and $15 for the three months ended March 31, 2015 and 2014.
[3] The associated liability is adjusted for changes in foreign exchange spot rates through realized capital gains and was $(30) for the three months ended March 31, 2014
[4] Unrealized losses exclude the change in fair value of bifurcated embedded derivative features of certain securities, for which changes in fair value are recorded in net realized capital gains (losses).
[5] Gross unrealized gains (losses) exclude the fair value of bifurcated embedded derivative features of certain securities. Subsequent changes in fair value will be recorded in net realized capital gains (losses).