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Investments and Derivative Instruments Level 4 Derivative Balance Sheet Classification (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Mar. 31, 2013
Derivative Balance Sheet Location [Line Items]      
Derivative Asset, Collateral, Obligation to Return Cash, Offset $ 81us-gaap_DerivativeAssetCollateralObligationToReturnCashOffset $ 33us-gaap_DerivativeAssetCollateralObligationToReturnCashOffset  
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Footnote [Abstract]      
Derivative, Notional Amount 53,755invest_DerivativeNotionalAmount 55,838invest_DerivativeNotionalAmount 55,838invest_DerivativeNotionalAmount
Derivative, Fair Value, Net (434)us-gaap_DerivativeFairValueOfDerivativeNet (460)us-gaap_DerivativeFairValueOfDerivativeNet  
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement 1,243us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement 1,050us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement  
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement 1,677us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement 1,510us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement  
Derivative Asset, Fair Value, Gross Asset 1,156us-gaap_DerivativeFairValueOfDerivativeAsset 959us-gaap_DerivativeFairValueOfDerivativeAsset  
Derivative Liability, Fair Value, Gross Liability (1,474)us-gaap_DerivativeFairValueOfDerivativeLiability (1,345)us-gaap_DerivativeFairValueOfDerivativeLiability  
Offsetting Derivative Assets [Abstract]      
Derivative Asset, Fair Value, Amount Offset Against Collateral 971us-gaap_DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset 801us-gaap_DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset  
Derivative Accrued Interest and Collateral Assets After Offsetting (191)us-gaap_DerivativeCollateralObligationToReturnCash (181)us-gaap_DerivativeCollateralObligationToReturnCash  
Derivative Asset, Fair Value, Amount Not Offset Against Collateral 118us-gaap_DerivativeAssetFairValueOfCollateral 83us-gaap_DerivativeAssetFairValueOfCollateral  
Offsetting Derivative Liabilities [Abstract]      
Derivative Liability, Fair Value, Amount Offset Against Collateral (658)us-gaap_DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset (574)us-gaap_DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset  
Derivative Accrued Interest and Collateral Liabilities After Offsetting (125)us-gaap_DerivativeCollateralRightToReclaimCash (49)us-gaap_DerivativeCollateralRightToReclaimCash  
Derivative Liability, Fair Value, Amount Not Offset Against Collateral (932)us-gaap_DerivativeLiabilityFairValueOfCollateral (900)us-gaap_DerivativeLiabilityFairValueOfCollateral  
Derivative Asset, Fair Value, Amount Offset Against Collateral 67us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral 75us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral  
Derivative Liability, Fair Value, Amount Offset Against Collateral 116us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral 129us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral  
Fixed Maturities [Member]      
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Footnote [Abstract]      
Derivative Asset, Fair Value, Gross Asset 0us-gaap_DerivativeFairValueOfDerivativeAsset
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Embedded Derivative Financial Instruments [Member] | Other Liabilities [Member]      
Offsetting Derivative Assets [Abstract]      
Derivative Assets (Liabilities), at Fair Value, Net (3)us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet
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Derivative Financial Instruments, Liabilities [Member]      
Offsetting Derivative Liabilities [Abstract]      
Derivative Liability, Fair Value, Amount Offset Against Collateral 330us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral
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Derivative Financial Instruments, Liabilities [Member] | Other Liabilities [Member]      
Offsetting Derivative Assets [Abstract]      
Derivative Assets (Liabilities), at Fair Value, Net (691)us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet
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Derivative Financial Instruments, Assets [Member] | Other Investments [Member]      
Offsetting Derivative Assets [Abstract]      
Derivative Assets (Liabilities), at Fair Value, Net 376us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet
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Coinsurance and Modified Coinsurance Reinsurance Contracts [Member] [Member]      
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Footnote [Abstract]      
Derivative, Notional Amount 963invest_DerivativeNotionalAmount
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Derivative, Fair Value, Net 22us-gaap_DerivativeFairValueOfDerivativeNet
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Non-qualifying Strategies [Member]      
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Footnote [Abstract]      
Derivative, Notional Amount 51,359invest_DerivativeNotionalAmount
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Derivative, Fair Value, Net (465)us-gaap_DerivativeFairValueOfDerivativeNet
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Derivative Asset, Fair Value, Gross Asset 1,179us-gaap_DerivativeFairValueOfDerivativeAsset
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Derivative Liability, Fair Value, Gross Liability (1,644)us-gaap_DerivativeFairValueOfDerivativeLiability
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Credit Derivatives that Assume Credit Risk [Member]      
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Footnote [Abstract]      
Derivative, Notional Amount 876invest_DerivativeNotionalAmount
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Derivative Liability, Fair Value, Gross Liability (6)us-gaap_DerivativeFairValueOfDerivativeLiability
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Equity Index Swaps Options [Member]      
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Footnote [Abstract]      
Derivative, Notional Amount 275invest_DerivativeNotionalAmount
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= hlic_EquityIndexSwapsOptionsMember		 422invest_DerivativeNotionalAmount
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Derivative, Fair Value, Net 1us-gaap_DerivativeFairValueOfDerivativeNet
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Derivative Asset, Fair Value, Gross Asset 31us-gaap_DerivativeFairValueOfDerivativeAsset
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Derivative Liability, Fair Value, Gross Liability (30)us-gaap_DerivativeFairValueOfDerivativeLiability
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Commodity Option [Member]      
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Footnote [Abstract]      
Derivative, Notional Amount 345invest_DerivativeNotionalAmount
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Derivative, Fair Value, Net 6us-gaap_DerivativeFairValueOfDerivativeNet
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Derivative Asset, Fair Value, Gross Asset 6us-gaap_DerivativeFairValueOfDerivativeAsset
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Derivative Liability, Fair Value, Gross Liability 0us-gaap_DerivativeFairValueOfDerivativeLiability
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Other Investments [Member]      
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Footnote [Abstract]      
Derivative, Notional Amount 12,819invest_DerivativeNotionalAmount
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Derivative, Fair Value, Net 376us-gaap_DerivativeFairValueOfDerivativeNet
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Derivative Asset, Fair Value, Gross Asset 437us-gaap_DerivativeFairValueOfDerivativeAsset
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Derivative Liability, Fair Value, Gross Liability (61)us-gaap_DerivativeFairValueOfDerivativeLiability
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Other Liabilities [Member]      
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Footnote [Abstract]      
Derivative, Notional Amount 19,143invest_DerivativeNotionalAmount
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Derivative, Fair Value, Net (694)us-gaap_DerivativeFairValueOfDerivativeNet
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Derivative Asset, Fair Value, Gross Asset 719us-gaap_DerivativeFairValueOfDerivativeAsset
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Derivative Liability, Fair Value, Gross Liability (1,413)us-gaap_DerivativeFairValueOfDerivativeLiability
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Cash Flow Hedging Interest Rate Swaps [Member]      
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Footnote [Abstract]      
Derivative, Notional Amount 2,187invest_DerivativeNotionalAmount
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Derivative, Fair Value, Net 57us-gaap_DerivativeFairValueOfDerivativeNet
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Derivative Asset, Fair Value, Gross Asset 57us-gaap_DerivativeFairValueOfDerivativeAsset
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Cash Flow Hedges Foreign Currency Swaps [Member]      
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Footnote [Abstract]      
Derivative, Notional Amount 143invest_DerivativeNotionalAmount
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Cash Flow Hedging [Member]      
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Footnote [Abstract]      
Derivative, Notional Amount 2,330invest_DerivativeNotionalAmount
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Derivative Asset, Fair Value, Gross Asset 64us-gaap_DerivativeFairValueOfDerivativeAsset
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Fair Value Hedging Interest Rate Swaps [Member]      
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Footnote [Abstract]      
Derivative, Notional Amount 66invest_DerivativeNotionalAmount
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Fair Value Hedging [Member]      
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Footnote [Abstract]      
Derivative, Notional Amount 66invest_DerivativeNotionalAmount
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Interest Rate Swaps Caps Floors and Futures [Member]      
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Footnote [Abstract]      
Derivative, Notional Amount 4,866invest_DerivativeNotionalAmount
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Derivative, Fair Value, Net (313)us-gaap_DerivativeFairValueOfDerivativeNet
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Derivative Asset, Fair Value, Gross Asset 489us-gaap_DerivativeFairValueOfDerivativeAsset
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Foreign Currency Swaps and Forwards Non-qualifying as Hedges [Member]      
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Footnote [Abstract]      
Derivative, Notional Amount 60invest_DerivativeNotionalAmount
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Derivative Asset, Fair Value, Gross Asset 2us-gaap_DerivativeFairValueOfDerivativeAsset
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= hlic_ForeignCurrencySwapsAndForwardsNonQualifyingAsHedgesMember		 0us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_DerivativeByNatureAxis
= hlic_ForeignCurrencySwapsAndForwardsNonQualifyingAsHedgesMember		  
Derivative Liability, Fair Value, Gross Liability 0us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_DerivativeByNatureAxis
= hlic_ForeignCurrencySwapsAndForwardsNonQualifyingAsHedgesMember		 0us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_DerivativeByNatureAxis
= hlic_ForeignCurrencySwapsAndForwardsNonQualifyingAsHedgesMember		  
Credit Derivatives that Purchase Credit Protection [Member]      
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Footnote [Abstract]      
Derivative, Notional Amount 52invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= hlic_CreditDerivativesThatPurchaseCreditProtectionMember		 276invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= hlic_CreditDerivativesThatPurchaseCreditProtectionMember		  
Derivative, Fair Value, Net (1)us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeByNatureAxis
= hlic_CreditDerivativesThatPurchaseCreditProtectionMember		 (1)us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeByNatureAxis
= hlic_CreditDerivativesThatPurchaseCreditProtectionMember		  
Derivative Asset, Fair Value, Gross Asset 0us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_DerivativeByNatureAxis
= hlic_CreditDerivativesThatPurchaseCreditProtectionMember		 4us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_DerivativeByNatureAxis
= hlic_CreditDerivativesThatPurchaseCreditProtectionMember		  
Derivative Liability, Fair Value, Gross Liability (1)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_DerivativeByNatureAxis
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/ us-gaap_DerivativeByNatureAxis
= hlic_CreditDerivativesThatPurchaseCreditProtectionMember		  
Credit Derivatives in Offsetting Positions [Member]      
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Footnote [Abstract]      
Derivative, Notional Amount 2,089invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= hlic_CreditDerivativesInOffsettingPositionsMember		 2,175invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= hlic_CreditDerivativesInOffsettingPositionsMember		  
Derivative, Fair Value, Net (1)us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeByNatureAxis
= hlic_CreditDerivativesInOffsettingPositionsMember		 (1)us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeByNatureAxis
= hlic_CreditDerivativesInOffsettingPositionsMember		  
Derivative Asset, Fair Value, Gross Asset 19us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_DerivativeByNatureAxis
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/ us-gaap_DerivativeByNatureAxis
= hlic_CreditDerivativesInOffsettingPositionsMember		  
Derivative Liability, Fair Value, Gross Liability (20)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_DerivativeByNatureAxis
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/ us-gaap_DerivativeByNatureAxis
= hlic_CreditDerivativesInOffsettingPositionsMember		  
Reinsurance Recoverables [Member]      
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Footnote [Abstract]      
Derivative, Notional Amount 4,477invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= hlic_ReinsuranceRecoverablesMember		 4,633invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= hlic_ReinsuranceRecoverablesMember		  
Derivative, Fair Value, Net 87us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeByNatureAxis
= hlic_ReinsuranceRecoverablesMember		 90us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeByNatureAxis
= hlic_ReinsuranceRecoverablesMember		  
Derivative Asset, Fair Value, Gross Asset 87us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_DerivativeByNatureAxis
= hlic_ReinsuranceRecoverablesMember		 90us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_DerivativeByNatureAxis
= hlic_ReinsuranceRecoverablesMember		  
Derivative Liability, Fair Value, Gross Liability 0us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_DerivativeByNatureAxis
= hlic_ReinsuranceRecoverablesMember		 0us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_DerivativeByNatureAxis
= hlic_ReinsuranceRecoverablesMember		  
Other Policyholder Funds and Benefits Payable [Member]      
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Footnote [Abstract]      
Derivative, Notional Amount 17,129invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= hlic_OtherPolicyholderFundsAndBenefitsPayableMember		 17,958invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= hlic_OtherPolicyholderFundsAndBenefitsPayableMember		  
Derivative, Fair Value, Net (202)us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeByNatureAxis
= hlic_OtherPolicyholderFundsAndBenefitsPayableMember		 (165)us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeByNatureAxis
= hlic_OtherPolicyholderFundsAndBenefitsPayableMember		  
Derivative Asset, Fair Value, Gross Asset 0us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_DerivativeByNatureAxis
= hlic_OtherPolicyholderFundsAndBenefitsPayableMember		 0us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_DerivativeByNatureAxis
= hlic_OtherPolicyholderFundsAndBenefitsPayableMember		  
Derivative Liability, Fair Value, Gross Liability (202)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_DerivativeByNatureAxis
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/ us-gaap_DerivativeByNatureAxis
= hlic_OtherPolicyholderFundsAndBenefitsPayableMember		  
Fixed Maturities [Member]      
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Footnote [Abstract]      
Derivative, Notional Amount 187invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_FixedMaturitiesMember		 186invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_FixedMaturitiesMember		  
Derivative, Fair Value, Net (1)us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeByNatureAxis
= us-gaap_FixedMaturitiesMember		 1us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeByNatureAxis
= us-gaap_FixedMaturitiesMember		  
Derivative Liability, Fair Value, Gross Liability (1)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_DerivativeByNatureAxis
= us-gaap_FixedMaturitiesMember		 0us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_DerivativeByNatureAxis
= us-gaap_FixedMaturitiesMember		  
JAPAN | Three Win Related Foreign Currency Swaps [Member]      
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Footnote [Abstract]      
Derivative, Notional Amount 1,319invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= hlic_ThreeWinRelatedForeignCurrencySwapsMember
/ invest_InvestmentGeographicRegionAxis
= country_JP		 1,319invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= hlic_ThreeWinRelatedForeignCurrencySwapsMember
/ invest_InvestmentGeographicRegionAxis
= country_JP		  
Derivative, Fair Value, Net (441)us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeByNatureAxis
= hlic_ThreeWinRelatedForeignCurrencySwapsMember
/ invest_InvestmentGeographicRegionAxis
= country_JP		 (427)us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeByNatureAxis
= hlic_ThreeWinRelatedForeignCurrencySwapsMember
/ invest_InvestmentGeographicRegionAxis
= country_JP		  
Derivative Asset, Fair Value, Gross Asset 0us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_DerivativeByNatureAxis
= hlic_ThreeWinRelatedForeignCurrencySwapsMember
/ invest_InvestmentGeographicRegionAxis
= country_JP		 0us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_DerivativeByNatureAxis
= hlic_ThreeWinRelatedForeignCurrencySwapsMember
/ invest_InvestmentGeographicRegionAxis
= country_JP		  
Derivative Liability, Fair Value, Gross Liability (441)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_DerivativeByNatureAxis
= hlic_ThreeWinRelatedForeignCurrencySwapsMember
/ invest_InvestmentGeographicRegionAxis
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/ us-gaap_DerivativeByNatureAxis
= hlic_ThreeWinRelatedForeignCurrencySwapsMember
/ invest_InvestmentGeographicRegionAxis
= country_JP		  
UNITED STATES | GMWB Hedging Instruments [Member]      
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Footnote [Abstract]      
Derivative, Notional Amount 12,179invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= hlic_GmwbHedgingInstrumentsMember
/ invest_InvestmentGeographicRegionAxis
= country_US		 14,442invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= hlic_GmwbHedgingInstrumentsMember
/ invest_InvestmentGeographicRegionAxis
= country_US		  
Derivative, Fair Value, Net 181us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeInstrumentRiskAxis
= hlic_GmwbHedgingInstrumentsMember
/ invest_InvestmentGeographicRegionAxis
= country_US		 174us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeInstrumentRiskAxis
= hlic_GmwbHedgingInstrumentsMember
/ invest_InvestmentGeographicRegionAxis
= country_US		  
Derivative Asset, Fair Value, Gross Asset 309us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_DerivativeInstrumentRiskAxis
= hlic_GmwbHedgingInstrumentsMember
/ invest_InvestmentGeographicRegionAxis
= country_US		 289us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_DerivativeInstrumentRiskAxis
= hlic_GmwbHedgingInstrumentsMember
/ invest_InvestmentGeographicRegionAxis
= country_US		  
Derivative Liability, Fair Value, Gross Liability (128)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_DerivativeInstrumentRiskAxis
= hlic_GmwbHedgingInstrumentsMember
/ invest_InvestmentGeographicRegionAxis
= country_US		 (115)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_DerivativeInstrumentRiskAxis
= hlic_GmwbHedgingInstrumentsMember
/ invest_InvestmentGeographicRegionAxis
= country_US		  
UNITED STATES | Macro Hedge Program [Member]      
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Footnote [Abstract]      
Derivative, Notional Amount 7,742invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= hlic_MacroHedgeProgramMember
/ invest_InvestmentGeographicRegionAxis
= country_US		 6,383invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= hlic_MacroHedgeProgramMember
/ invest_InvestmentGeographicRegionAxis
= country_US		  
Derivative, Fair Value, Net 187us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeInstrumentRiskAxis
= hlic_MacroHedgeProgramMember
/ invest_InvestmentGeographicRegionAxis
= country_US		 141us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeInstrumentRiskAxis
= hlic_MacroHedgeProgramMember
/ invest_InvestmentGeographicRegionAxis
= country_US		  
Derivative Asset, Fair Value, Gross Asset 227us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_DerivativeInstrumentRiskAxis
= hlic_MacroHedgeProgramMember
/ invest_InvestmentGeographicRegionAxis
= country_US		 180us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_DerivativeInstrumentRiskAxis
= hlic_MacroHedgeProgramMember
/ invest_InvestmentGeographicRegionAxis
= country_US		  
Derivative Liability, Fair Value, Gross Liability (40)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_DerivativeInstrumentRiskAxis
= hlic_MacroHedgeProgramMember
/ invest_InvestmentGeographicRegionAxis
= country_US		 (39)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_DerivativeInstrumentRiskAxis
= hlic_MacroHedgeProgramMember
/ invest_InvestmentGeographicRegionAxis
= country_US		  
UNITED STATES | Macro Hedge Program [Member]      
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Footnote [Abstract]      
Derivative, Notional Amount 7,742invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= hlic_MacroHedgeProgramMember
/ invest_InvestmentGeographicRegionAxis
= country_US		 6,383invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= hlic_MacroHedgeProgramMember
/ invest_InvestmentGeographicRegionAxis
= country_US		  
Derivative, Fair Value, Net 187us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeByNatureAxis
= hlic_MacroHedgeProgramMember
/ invest_InvestmentGeographicRegionAxis
= country_US		 141us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeByNatureAxis
= hlic_MacroHedgeProgramMember
/ invest_InvestmentGeographicRegionAxis
= country_US		  
UNITED STATES | Macro Hedge Program [Member] | Other Liabilities [Member]      
Offsetting Derivative Assets [Abstract]      
Derivative Assets (Liabilities), at Fair Value, Net 52us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet
/ us-gaap_BalanceSheetLocationAxis
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/ us-gaap_DerivativeByNatureAxis
= hlic_MacroHedgeProgramMember
/ invest_InvestmentGeographicRegionAxis
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/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherLiabilitiesMember
/ us-gaap_DerivativeByNatureAxis
= hlic_MacroHedgeProgramMember
/ invest_InvestmentGeographicRegionAxis
= country_US		  
UNITED STATES | Macro Hedge Program [Member] | Other Investments [Member]      
Offsetting Derivative Assets [Abstract]      
Derivative Assets (Liabilities), at Fair Value, Net 135us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherInvestmentsMember
/ us-gaap_DerivativeByNatureAxis
= hlic_MacroHedgeProgramMember
/ invest_InvestmentGeographicRegionAxis
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= us-gaap_OtherInvestmentsMember
/ us-gaap_DerivativeByNatureAxis
= hlic_MacroHedgeProgramMember
/ invest_InvestmentGeographicRegionAxis
= country_US		  
UNITED STATES | GMWB Product Derivatives [Member]      
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Footnote [Abstract]      
Derivative, Notional Amount 17,079invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= hlic_GmwbProductDerivativesMember
/ invest_InvestmentGeographicRegionAxis
= country_US		 [2] 17,908invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= hlic_GmwbProductDerivativesMember
/ invest_InvestmentGeographicRegionAxis
= country_US		 [2]  
Derivative, Fair Value, Net (176)us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeByNatureAxis
= hlic_GmwbProductDerivativesMember
/ invest_InvestmentGeographicRegionAxis
= country_US		 [2] (139)us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeByNatureAxis
= hlic_GmwbProductDerivativesMember
/ invest_InvestmentGeographicRegionAxis
= country_US		 [2]  
Derivative Asset, Fair Value, Gross Asset 0us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_DerivativeByNatureAxis
= hlic_GmwbProductDerivativesMember
/ invest_InvestmentGeographicRegionAxis
= country_US		 [2] 0us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_DerivativeByNatureAxis
= hlic_GmwbProductDerivativesMember
/ invest_InvestmentGeographicRegionAxis
= country_US		 [2]  
Derivative Liability, Fair Value, Gross Liability (176)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_DerivativeByNatureAxis
= hlic_GmwbProductDerivativesMember
/ invest_InvestmentGeographicRegionAxis
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/ us-gaap_DerivativeByNatureAxis
= hlic_GmwbProductDerivativesMember
/ invest_InvestmentGeographicRegionAxis
= country_US		 [2]  
UNITED STATES | GMWB Reinsurance [Member]      
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Footnote [Abstract]      
Derivative, Notional Amount 3,514invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= hlic_GmwbReinsuranceMember
/ invest_InvestmentGeographicRegionAxis
= country_US		 3,659invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= hlic_GmwbReinsuranceMember
/ invest_InvestmentGeographicRegionAxis
= country_US		  
Derivative, Fair Value, Net 65us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeByNatureAxis
= hlic_GmwbReinsuranceMember
/ invest_InvestmentGeographicRegionAxis
= country_US		 56us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeByNatureAxis
= hlic_GmwbReinsuranceMember
/ invest_InvestmentGeographicRegionAxis
= country_US		  
Derivative Asset, Fair Value, Gross Asset 65us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_DerivativeByNatureAxis
= hlic_GmwbReinsuranceMember
/ invest_InvestmentGeographicRegionAxis
= country_US		 56us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_DerivativeByNatureAxis
= hlic_GmwbReinsuranceMember
/ invest_InvestmentGeographicRegionAxis
= country_US		  
Derivative Liability, Fair Value, Gross Liability $ 0us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_DerivativeByNatureAxis
= hlic_GmwbReinsuranceMember
/ invest_InvestmentGeographicRegionAxis
= country_US		 $ 0us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_DerivativeByNatureAxis
= hlic_GmwbReinsuranceMember
/ invest_InvestmentGeographicRegionAxis
= country_US		  
[1] The derivative instruments related to this strategy are held for other investment purposes.
[2] These derivatives are embedded within liabilities and are not held for risk management purposes.