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Investments and Derivative Instruments Level 4 Mortgage Loans (Details) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Sep. 30, 2013
Mortgage Loans on Real Estate [Abstract]        
Available-for-sale Securities, Amortized Cost Basis $ 23,535,000,000us-gaap_AvailableForSaleSecuritiesAmortizedCost [1] $ 27,550,000,000us-gaap_AvailableForSaleSecuritiesAmortizedCost [1]    
Mortgage Loans on Real Estate, Carrying Amount of Mortgages 3,109,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages 3,470,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages    
Available-for-sale Securities Mortgage Loans Percent 100.00%hlic_AvailableForSaleSecuritiesMortgageLoansPercent 100.00%hlic_AvailableForSaleSecuritiesMortgageLoansPercent    
Movement in Valuation Allowance for Mortgage Loans [Roll Forward]        
Current Weighted Average Loan to Value Ratio of Commercial Mortgage Loan 57.00%hlic_CurrentWeightedAverageLoanToValueRatioOfCommercialMortgageLoan      
Original Weighted Average Loan to Value Ratio of Commercial Mortgage loan 63.00%hlic_OriginalWeightedAverageLoanToValueRatioOfCommercialMortgageLoan      
Commercial Mortgage Loans Credit Quality [Abstract]        
Average Debt Service Coverage Ratio 2.36hlic_AverageDebtServiceCoverageRatio      
Agricultural [Member]        
Mortgage Loans on Real Estate [Abstract]        
Mortgage Loans on Real Estate, Carrying Amount of Mortgages 22,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= hlic_AgriculturalMember		 93,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= hlic_AgriculturalMember		    
Available-for-sale Securities Mortgage Loans Percent 0.70%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= hlic_AgriculturalMember		 2.70%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= hlic_AgriculturalMember		    
Commercial Loan [Member]        
Mortgage Loans on Real Estate [Abstract]        
Available-for-sale Securities, Amortized Cost Basis 3,124,000,000us-gaap_AvailableForSaleSecuritiesAmortizedCost
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		 [2],[3] 3,482,000,000us-gaap_AvailableForSaleSecuritiesAmortizedCost
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		 [2],[3]    
Mortgage Loans on Real Estate, Carrying Amount of Mortgages 3,109,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		 [3] 3,470,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		 [3]    
Movement in Valuation Allowance for Mortgage Loans [Roll Forward]        
Allowance, as of Jan. 1 12,000,000us-gaap_AllowanceForLoanAndLeaseLossesRealEstate
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		 [3] 14,000,000us-gaap_AllowanceForLoanAndLeaseLossesRealEstate
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		 23,000,000us-gaap_AllowanceForLoanAndLeaseLossesRealEstate
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		 12,000,000us-gaap_AllowanceForLoanAndLeaseLossesRealEstate
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember
Allowance for Loan and Lease Losses, Write-offs 1,000,000us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		 4,000,000us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		 5,000,000us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		  
Allowance for Loan and Lease Losses, Period Increase (Decrease) 4,000,000us-gaap_AllowanceForLoanAndLeaseLossesPeriodIncreaseDecrease
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		 2,000,000us-gaap_AllowanceForLoanAndLeaseLossesPeriodIncreaseDecrease
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		 (4,000,000)us-gaap_AllowanceForLoanAndLeaseLossesPeriodIncreaseDecrease
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		  
Allowance, as of Dec. 31 15,000,000us-gaap_AllowanceForLoanAndLeaseLossesRealEstate
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		 [3] 12,000,000us-gaap_AllowanceForLoanAndLeaseLossesRealEstate
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		 [3] 14,000,000us-gaap_AllowanceForLoanAndLeaseLossesRealEstate
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		 12,000,000us-gaap_AllowanceForLoanAndLeaseLossesRealEstate
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember
Commercial Mortgage Loans Credit Quality [Abstract]        
Average Debt Service Coverage Ratio 2.36hlic_AverageDebtServiceCoverageRatio
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		 2.23hlic_AverageDebtServiceCoverageRatio
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		    
Mortgage Loans on Real Estate, Principal Amount of Delinquent Loans 0us-gaap_MortgageLoansOnRealEstatePrincipalAmountOfDelinquentLoans
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		      
Industrial Property [Member]        
Mortgage Loans on Real Estate [Abstract]        
Mortgage Loans on Real Estate, Carrying Amount of Mortgages 989,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_IndustrialPropertyMember		 1,182,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_IndustrialPropertyMember		    
Available-for-sale Securities Mortgage Loans Percent 31.80%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_IndustrialPropertyMember		 34.10%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_IndustrialPropertyMember		    
Lodging [Member]        
Mortgage Loans on Real Estate [Abstract]        
Mortgage Loans on Real Estate, Carrying Amount of Mortgages 26,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= hlic_LodgingMember		 27,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= hlic_LodgingMember		    
Available-for-sale Securities Mortgage Loans Percent 0.80%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= hlic_LodgingMember		 0.80%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= hlic_LodgingMember		    
Multifamily [Member]        
Mortgage Loans on Real Estate [Abstract]        
Mortgage Loans on Real Estate, Carrying Amount of Mortgages 522,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= hlic_MultifamilyMember		 576,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= hlic_MultifamilyMember		    
Available-for-sale Securities Mortgage Loans Percent 16.80%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= hlic_MultifamilyMember		 16.60%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= hlic_MultifamilyMember		    
Office [Member]        
Mortgage Loans on Real Estate [Abstract]        
Mortgage Loans on Real Estate, Carrying Amount of Mortgages 723,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= hlic_OfficeMember		 723,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= hlic_OfficeMember		    
Available-for-sale Securities Mortgage Loans Percent 23.30%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= hlic_OfficeMember		 20.80%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= hlic_OfficeMember		    
Retail [Member]        
Mortgage Loans on Real Estate [Abstract]        
Mortgage Loans on Real Estate, Carrying Amount of Mortgages 713,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= hlic_RetailMember		 745,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= hlic_RetailMember		    
Available-for-sale Securities Mortgage Loans Percent 22.90%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= hlic_RetailMember		 21.50%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= hlic_RetailMember		    
Other Property Type Mortgage [Member]        
Mortgage Loans on Real Estate [Abstract]        
Mortgage Loans on Real Estate, Carrying Amount of Mortgages 114,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= hlic_OtherPropertyTypeMortgageMember		 124,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= hlic_OtherPropertyTypeMortgageMember		    
Available-for-sale Securities Mortgage Loans Percent 3.70%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= hlic_OtherPropertyTypeMortgageMember		 3.50%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= hlic_OtherPropertyTypeMortgageMember		    
Allowance for Loan and Lease Losses [Member]        
Mortgage Loans on Real Estate [Abstract]        
Mortgage Loans on Real Estate, Carrying Amount of Mortgages 49,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForLoanAndLeaseLossesMember		 86,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForLoanAndLeaseLossesMember		    
Assets Held-for-sale [Member]        
Mortgage Loans on Real Estate [Abstract]        
Mortgage Loans on Real Estate, Carrying Amount of Mortgages   53,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis
= us-gaap_AssetsHeldForSaleMember		    
Assets Held-for-sale [Member] | Commercial Loan [Member]        
Movement in Valuation Allowance for Mortgage Loans [Roll Forward]        
Allowance, as of Dec. 31   3,000,000us-gaap_AllowanceForLoanAndLeaseLossesRealEstate
/ us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis
= us-gaap_AssetsHeldForSaleMember
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		    
LTV Greater Than 80% [Member] | Commercial Loan [Member]        
Mortgage Loans on Real Estate [Abstract]        
Mortgage Loans on Real Estate, Carrying Amount of Mortgages 21,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ hlic_LoantoValueRatioAxis
= hlic_LTVGreaterThan80Member
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		 35,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ hlic_LoantoValueRatioAxis
= hlic_LTVGreaterThan80Member
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		    
Commercial Mortgage Loans Credit Quality [Abstract]        
Average Debt Service Coverage Ratio 1.14hlic_AverageDebtServiceCoverageRatio
/ hlic_LoantoValueRatioAxis
= hlic_LTVGreaterThan80Member
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		 1.15hlic_AverageDebtServiceCoverageRatio
/ hlic_LoantoValueRatioAxis
= hlic_LTVGreaterThan80Member
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		    
LTV Between 65% to 80% [Member] | Commercial Loan [Member]        
Mortgage Loans on Real Estate [Abstract]        
Mortgage Loans on Real Estate, Carrying Amount of Mortgages 452,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ hlic_LoantoValueRatioAxis
= hlic_LTVBetween65to80Member
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		 777,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ hlic_LoantoValueRatioAxis
= hlic_LTVBetween65to80Member
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		    
Commercial Mortgage Loans Credit Quality [Abstract]        
Average Debt Service Coverage Ratio 1.71hlic_AverageDebtServiceCoverageRatio
/ hlic_LoantoValueRatioAxis
= hlic_LTVBetween65to80Member
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		 1.94hlic_AverageDebtServiceCoverageRatio
/ hlic_LoantoValueRatioAxis
= hlic_LTVBetween65to80Member
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		    
LTV Less Than 65% [Member] | Commercial Loan [Member]        
Mortgage Loans on Real Estate [Abstract]        
Mortgage Loans on Real Estate, Carrying Amount of Mortgages 2,636,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ hlic_LoantoValueRatioAxis
= hlic_LTVLessThan65Member
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		 2,658,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ hlic_LoantoValueRatioAxis
= hlic_LTVLessThan65Member
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		    
Commercial Mortgage Loans Credit Quality [Abstract]        
Average Debt Service Coverage Ratio 2.49hlic_AverageDebtServiceCoverageRatio
/ hlic_LoantoValueRatioAxis
= hlic_LTVLessThan65Member
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		 2.34hlic_AverageDebtServiceCoverageRatio
/ hlic_LoantoValueRatioAxis
= hlic_LTVLessThan65Member
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= us-gaap_CommercialLoanMember		    
East North Central [Member]        
Mortgage Loans on Real Estate [Abstract]        
Mortgage Loans on Real Estate, Carrying Amount of Mortgages 64,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ invest_InvestmentGeographicRegionAxis
= hlic_EastNorthCentralMember		 79,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ invest_InvestmentGeographicRegionAxis
= hlic_EastNorthCentralMember		    
Available-for-sale Securities Mortgage Loans Percent 2.10%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ invest_InvestmentGeographicRegionAxis
= hlic_EastNorthCentralMember		 2.30%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ invest_InvestmentGeographicRegionAxis
= hlic_EastNorthCentralMember		    
Middle Atlantic [Member]        
Mortgage Loans on Real Estate [Abstract]        
Mortgage Loans on Real Estate, Carrying Amount of Mortgages 272,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ invest_InvestmentGeographicRegionAxis
= hlic_MiddleAtlanticMember		 255,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ invest_InvestmentGeographicRegionAxis
= hlic_MiddleAtlanticMember		    
Available-for-sale Securities Mortgage Loans Percent 8.70%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ invest_InvestmentGeographicRegionAxis
= hlic_MiddleAtlanticMember		 7.30%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ invest_InvestmentGeographicRegionAxis
= hlic_MiddleAtlanticMember		    
Mountain [Member]        
Mortgage Loans on Real Estate [Abstract]        
Mortgage Loans on Real Estate, Carrying Amount of Mortgages 35,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ invest_InvestmentGeographicRegionAxis
= hlic_MountainMember		 40,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ invest_InvestmentGeographicRegionAxis
= hlic_MountainMember		    
Available-for-sale Securities Mortgage Loans Percent 1.10%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ invest_InvestmentGeographicRegionAxis
= hlic_MountainMember		 1.20%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ invest_InvestmentGeographicRegionAxis
= hlic_MountainMember		    
New England [Member]        
Mortgage Loans on Real Estate [Abstract]        
Mortgage Loans on Real Estate, Carrying Amount of Mortgages 146,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ invest_InvestmentGeographicRegionAxis
= hlic_NewEnglandMember		 163,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ invest_InvestmentGeographicRegionAxis
= hlic_NewEnglandMember		    
Available-for-sale Securities Mortgage Loans Percent 4.70%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ invest_InvestmentGeographicRegionAxis
= hlic_NewEnglandMember		 4.70%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ invest_InvestmentGeographicRegionAxis
= hlic_NewEnglandMember		    
Pacific [Member]        
Mortgage Loans on Real Estate [Abstract]        
Mortgage Loans on Real Estate, Carrying Amount of Mortgages 905,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ invest_InvestmentGeographicRegionAxis
= hlic_PacificMember		 1,019,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ invest_InvestmentGeographicRegionAxis
= hlic_PacificMember		    
Available-for-sale Securities Mortgage Loans Percent 29.10%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ invest_InvestmentGeographicRegionAxis
= hlic_PacificMember		 29.40%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ invest_InvestmentGeographicRegionAxis
= hlic_PacificMember		    
South Atlantic [Member]        
Mortgage Loans on Real Estate [Abstract]        
Mortgage Loans on Real Estate, Carrying Amount of Mortgages 532,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ invest_InvestmentGeographicRegionAxis
= hlic_SouthAtlanticMember		 548,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ invest_InvestmentGeographicRegionAxis
= hlic_SouthAtlanticMember		    
Available-for-sale Securities Mortgage Loans Percent 17.10%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ invest_InvestmentGeographicRegionAxis
= hlic_SouthAtlanticMember		 15.80%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ invest_InvestmentGeographicRegionAxis
= hlic_SouthAtlanticMember		    
West North Central [Member]        
Mortgage Loans on Real Estate [Abstract]        
Mortgage Loans on Real Estate, Carrying Amount of Mortgages 15,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ invest_InvestmentGeographicRegionAxis
= hlic_WestNorthCentralMember		 17,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ invest_InvestmentGeographicRegionAxis
= hlic_WestNorthCentralMember		    
Available-for-sale Securities Mortgage Loans Percent 0.50%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ invest_InvestmentGeographicRegionAxis
= hlic_WestNorthCentralMember		 0.50%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ invest_InvestmentGeographicRegionAxis
= hlic_WestNorthCentralMember		    
West South Central [Member]        
Mortgage Loans on Real Estate [Abstract]        
Mortgage Loans on Real Estate, Carrying Amount of Mortgages 125,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ invest_InvestmentGeographicRegionAxis
= hlic_WestSouthCentralMember		 144,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ invest_InvestmentGeographicRegionAxis
= hlic_WestSouthCentralMember		    
Available-for-sale Securities Mortgage Loans Percent 4.00%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ invest_InvestmentGeographicRegionAxis
= hlic_WestSouthCentralMember		 4.10%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ invest_InvestmentGeographicRegionAxis
= hlic_WestSouthCentralMember		    
Region Others [Member]        
Mortgage Loans on Real Estate [Abstract]        
Mortgage Loans on Real Estate, Carrying Amount of Mortgages $ 1,015,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ invest_InvestmentGeographicRegionAxis
= hlic_RegionOthersMember		 [4] $ 1,205,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ invest_InvestmentGeographicRegionAxis
= hlic_RegionOthersMember		 [4]    
Available-for-sale Securities Mortgage Loans Percent 32.70%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ invest_InvestmentGeographicRegionAxis
= hlic_RegionOthersMember		 [4] 34.70%hlic_AvailableForSaleSecuritiesMortgageLoansPercent
/ invest_InvestmentGeographicRegionAxis
= hlic_RegionOthersMember		 [4]    
[1] {F|ahBzfndlYmZpbGluZ3MtaHJkcmoLEgZYTUxEb2MiXlhCUkxEb2NHZW5JbmZvOmJjYjljZTVmOWRhMTRiMzNhNzY5NDMzOTEyM2E5MmNlfFRleHRTZWxlY3Rpb246MEIzNjJBNjBBNEE3NTY0QTgyRENBRjA2NjAyRDUwOTMM}
[2] Amortized cost represents carrying value prior to valuation allowances, if any.
[3] {F|ahBzfndlYmZpbGluZ3MtaHJkcmoLEgZYTUxEb2MiXlhCUkxEb2NHZW5JbmZvOmJjYjljZTVmOWRhMTRiMzNhNzY5NDMzOTEyM2E5MmNlfFRleHRTZWxlY3Rpb246QkM5MTUyRTMxNjBENTFGODk4QzU3QjBFRDAwQkREOTYM}
[4] Primarily represents loans collateralized by multiple properties in various regions.