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Separate Accounts, Death Benefits and Other Insurance Benefit Features Level 4 (Details) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Jun. 30, 2013
Sep. 30, 2013
Movement in Changes in gross GMDB/GMWB and UL secondary guarantee benefits [Roll Forward]          
Deferred Policy Acquisition Cost, Amortization Expense, Effect of Adjustments to Estimated Gross Profit $ 96,000,000us-gaap_DeferredPolicyAcquisitionCostAmortizationExpenseEffectOfAdjustmentsToEstimatedGrossProfit [1] $ 104,000,000us-gaap_DeferredPolicyAcquisitionCostAmortizationExpenseEffectOfAdjustmentsToEstimatedGrossProfit [1] $ 44,000,000us-gaap_DeferredPolicyAcquisitionCostAmortizationExpenseEffectOfAdjustmentsToEstimatedGrossProfit [1]    
Liabilities for Guarantees on Long-Duration Contracts, Reinsurance Recoverable       1,143,000,000us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsReinsuranceRecoverable  
Account Value by GMDB Type [Abstract]          
Net Amount at Risk by Product and Guarantee, General Account Value 23,775,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeGeneralAccountValue        
Net Amount at Risk by Product and Guarantee, Net Amount at Risk at Annuitization 3,493,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeNetAmountAtRisk        
Net Amount at Risk by Product and Guarantee, Net Amount at Risk at Annuitization 563,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeNetAmountAtRiskAtAnnuitization        
Separate Accounts, Liability 134,689,000,000us-gaap_SeparateAccountsLiability 140,874,000,000us-gaap_SeparateAccountsLiability      
Schedule of Fair Value of Separate Accounts [Abstract]          
Schedule of Fair Value of Separate Accounts by Major Category of Investment, Fair Value 48,852,000,000us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentFairValue 57,463,000,000us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentFairValue      
Invested in Fixed Income Securities 17.00%hlic_InvestedInFixedIncomeSecurities        
Invested in Equity Securities 83.00%hlic_InvestedInEquitySecurities        
Reinsurance Recoverable Asset Impact of Reinsurance Transaction   1,485,000,000hlic_ReinsuranceRecoverableAssetImpactOfReinsuranceTransaction      
MAV Only [Member]          
Account Value by GMDB Type [Abstract]          
Net Amount at Risk by Product and Guarantee, General Account Value 17,435,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeGeneralAccountValue
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_MavOnlyMember		        
Net Amount at Risk by Product and Guarantee, Net Amount at Risk at Annuitization 2,590,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeNetAmountAtRisk
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_MavOnlyMember		        
Net Amount at Risk by Product and Guarantee, Net Amount at Risk at Annuitization 396,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeNetAmountAtRiskAtAnnuitization
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_MavOnlyMember		        
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age 70 years        
Guaranteed Minimum Death Benefit [Member]          
Movement in Changes in gross GMDB/GMWB and UL secondary guarantee benefits [Roll Forward]          
Liabilities, as of Jan. 1 849,000,000us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteedBenefitLiabilityGross
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember		 944,000,000us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteedBenefitLiabilityGross
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember		     849,000,000us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteedBenefitLiabilityGross
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember
Liabilities for Guarantees on Long-Duration Contracts, Incurred Benefits 173,000,000us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsIncurredBenefits1
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember		 183,000,000us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsIncurredBenefits1
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember		      
Liabilities for Guarantees on Long-Duration Contracts, Benefits Paid 110,000,000us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsBenefitsPaid
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember		 135,000,000us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsBenefitsPaid
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember		      
Deferred Policy Acquisition Cost, Amortization Expense, Effect of Adjustments to Estimated Gross Profit (100,000,000)us-gaap_DeferredPolicyAcquisitionCostAmortizationExpenseEffectOfAdjustmentsToEstimatedGrossProfit
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember		 (116,000,000)us-gaap_DeferredPolicyAcquisitionCostAmortizationExpenseEffectOfAdjustmentsToEstimatedGrossProfit
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember		      
Liabilities for Guarantees on Long-Duration Contracts, Other Liability Adjustments   27,000,000us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsOtherLiabilityAdjustments
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember		      
Liabilities, as of Dec. 31 812,000,000us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteedBenefitLiabilityGross
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember		 849,000,000us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteedBenefitLiabilityGross
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember		     849,000,000us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteedBenefitLiabilityGross
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember
Reinsurance Recoverable, as of Jan. 1 533,000,000us-gaap_ReinsuranceRecoverableGuaranteeBenefits
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember		 608,000,000us-gaap_ReinsuranceRecoverableGuaranteeBenefits
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember		     533,000,000us-gaap_ReinsuranceRecoverableGuaranteeBenefits
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember
Reinsurance Recoverable Asset Incurred 98,000,000hlic_ReinsuranceRecoverableAssetIncurred
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember		 104,000,000hlic_ReinsuranceRecoverableAssetIncurred
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember		      
Reinsurance Recoverable Asset Paid 85,000,000hlic_ReinsuranceRecoverableAssetPaid
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember		 98,000,000hlic_ReinsuranceRecoverableAssetPaid
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember		      
Reinsurance Recoverable, as of Dec. 31 480,000,000us-gaap_ReinsuranceRecoverableGuaranteeBenefits
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember		 533,000,000us-gaap_ReinsuranceRecoverableGuaranteeBenefits
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember		     533,000,000us-gaap_ReinsuranceRecoverableGuaranteeBenefits
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember
Account Value by GMDB Type [Abstract]          
Net Amount at Risk by Product and Guarantee, General Account Value 4,009,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeGeneralAccountValue
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember		        
With Five Percent Rollup [Member]          
Account Value by GMDB Type [Abstract]          
Net Amount at Risk by Product and Guarantee, General Account Value 1,451,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeGeneralAccountValue
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_WithFivePercentRollupMember		        
Net Amount at Risk by Product and Guarantee, Net Amount at Risk at Annuitization 209,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeNetAmountAtRisk
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_WithFivePercentRollupMember		        
Net Amount at Risk by Product and Guarantee, Net Amount at Risk at Annuitization 59,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeNetAmountAtRiskAtAnnuitization
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_WithFivePercentRollupMember		        
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age 70 years        
With Earnings Protection Benefit Rider (EPB) [Member]          
Account Value by GMDB Type [Abstract]          
Net Amount at Risk by Product and Guarantee, General Account Value 4,342,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeGeneralAccountValue
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_WithEarningsProtectionBenefitRiderEpbMember		        
Net Amount at Risk by Product and Guarantee, Net Amount at Risk at Annuitization 579,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeNetAmountAtRisk
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_WithEarningsProtectionBenefitRiderEpbMember		        
Net Amount at Risk by Product and Guarantee, Net Amount at Risk at Annuitization 83,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeNetAmountAtRiskAtAnnuitization
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_WithEarningsProtectionBenefitRiderEpbMember		        
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age 68 years        
With Five Percent Rollup and EPB [Member]          
Account Value by GMDB Type [Abstract]          
Net Amount at Risk by Product and Guarantee, General Account Value 547,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeGeneralAccountValue
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_WithFivePercentRollupAndEpbMember		        
Net Amount at Risk by Product and Guarantee, Net Amount at Risk at Annuitization 115,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeNetAmountAtRisk
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_WithFivePercentRollupAndEpbMember		        
Net Amount at Risk by Product and Guarantee, Net Amount at Risk at Annuitization 25,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeNetAmountAtRiskAtAnnuitization
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_WithFivePercentRollupAndEpbMember		        
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age 71 years        
Asset Protection Benefit ("APB") [Member]          
Account Value by GMDB Type [Abstract]          
Net Amount at Risk by Product and Guarantee, General Account Value 15,183,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeGeneralAccountValue
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_AssetProtectionBenefitApbMember		        
Net Amount at Risk by Product and Guarantee, Net Amount at Risk at Annuitization 228,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeNetAmountAtRisk
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_AssetProtectionBenefitApbMember		        
Net Amount at Risk by Product and Guarantee, Net Amount at Risk at Annuitization 151,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeNetAmountAtRiskAtAnnuitization
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_AssetProtectionBenefitApbMember		        
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age 68 years        
Lifetime Income Benefit ("LIB") - Death Benefit [Member]          
Account Value by GMDB Type [Abstract]          
Net Amount at Risk by Product and Guarantee, General Account Value 624,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeGeneralAccountValue
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_LifetimeIncomeBenefitLibDeathBenefitMember		        
Net Amount at Risk by Product and Guarantee, Net Amount at Risk at Annuitization 7,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeNetAmountAtRisk
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_LifetimeIncomeBenefitLibDeathBenefitMember		        
Net Amount at Risk by Product and Guarantee, Net Amount at Risk at Annuitization 7,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeNetAmountAtRiskAtAnnuitization
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_LifetimeIncomeBenefitLibDeathBenefitMember		        
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age 68 years        
Reset [Member]          
Account Value by GMDB Type [Abstract]          
Net Amount at Risk by Product and Guarantee, General Account Value 3,036,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeGeneralAccountValue
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_ResetMember		        
Net Amount at Risk by Product and Guarantee, Net Amount at Risk at Annuitization 22,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeNetAmountAtRisk
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_ResetMember		        
Net Amount at Risk by Product and Guarantee, Net Amount at Risk at Annuitization 22,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeNetAmountAtRiskAtAnnuitization
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_ResetMember		        
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age 69 years        
Return of Premium ROP Other [Member]          
Account Value by GMDB Type [Abstract]          
Net Amount at Risk by Product and Guarantee, General Account Value 10,243,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeGeneralAccountValue
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_ReturnOfPremiumRopOtherMember		        
Net Amount at Risk by Product and Guarantee, Net Amount at Risk at Annuitization 57,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeNetAmountAtRisk
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_ReturnOfPremiumRopOtherMember		        
Net Amount at Risk by Product and Guarantee, Net Amount at Risk at Annuitization 50,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeNetAmountAtRiskAtAnnuitization
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_ReturnOfPremiumRopOtherMember		        
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age 68 years        
Universal Life [Member] | Secondary Guarantees [Member]          
Movement in Changes in gross GMDB/GMWB and UL secondary guarantee benefits [Roll Forward]          
Liabilities, as of Jan. 1 1,802,000,000us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteedBenefitLiabilityGross
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_SecondaryGuaranteesMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_UniversalLifeMember		 363,000,000us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteedBenefitLiabilityGross
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_SecondaryGuaranteesMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_UniversalLifeMember		     1,802,000,000us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteedBenefitLiabilityGross
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_SecondaryGuaranteesMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_UniversalLifeMember
Liabilities for Guarantees on Long-Duration Contracts, Incurred Benefits 236,000,000us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsIncurredBenefits1
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_SecondaryGuaranteesMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_UniversalLifeMember		 294,000,000us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsIncurredBenefits1
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_SecondaryGuaranteesMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_UniversalLifeMember		      
Liabilities for Guarantees on Long-Duration Contracts, Benefits Paid 0us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsBenefitsPaid
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_SecondaryGuaranteesMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_UniversalLifeMember		        
Deferred Policy Acquisition Cost, Amortization Expense, Effect of Adjustments to Estimated Gross Profit 3,000,000us-gaap_DeferredPolicyAcquisitionCostAmortizationExpenseEffectOfAdjustmentsToEstimatedGrossProfit
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_SecondaryGuaranteesMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_UniversalLifeMember		 2,000,000us-gaap_DeferredPolicyAcquisitionCostAmortizationExpenseEffectOfAdjustmentsToEstimatedGrossProfit
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_SecondaryGuaranteesMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_UniversalLifeMember		      
Liabilities for Guarantees on Long-Duration Contracts, Other Liability Adjustments   0us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsOtherLiabilityAdjustments
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_SecondaryGuaranteesMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_UniversalLifeMember		      
Liabilities, as of Dec. 31 2,041,000,000us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteedBenefitLiabilityGross
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_SecondaryGuaranteesMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_UniversalLifeMember		 1,802,000,000us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteedBenefitLiabilityGross
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_SecondaryGuaranteesMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_UniversalLifeMember		     1,802,000,000us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteedBenefitLiabilityGross
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_SecondaryGuaranteesMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_UniversalLifeMember
Reinsurance Recoverable, as of Jan. 1 1,802,000,000us-gaap_ReinsuranceRecoverableGuaranteeBenefits
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_SecondaryGuaranteesMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_UniversalLifeMember		 21,000,000us-gaap_ReinsuranceRecoverableGuaranteeBenefits
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_SecondaryGuaranteesMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_UniversalLifeMember		     1,802,000,000us-gaap_ReinsuranceRecoverableGuaranteeBenefits
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_SecondaryGuaranteesMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_UniversalLifeMember
Reinsurance Recoverable Asset Incurred 239,000,000hlic_ReinsuranceRecoverableAssetIncurred
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_SecondaryGuaranteesMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_UniversalLifeMember		 296,000,000hlic_ReinsuranceRecoverableAssetIncurred
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_SecondaryGuaranteesMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_UniversalLifeMember		      
Reinsurance Recoverable Asset Paid 0hlic_ReinsuranceRecoverableAssetPaid
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_SecondaryGuaranteesMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_UniversalLifeMember		        
Reinsurance Recoverable, as of Dec. 31 2,041,000,000us-gaap_ReinsuranceRecoverableGuaranteeBenefits
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_SecondaryGuaranteesMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_UniversalLifeMember		 1,802,000,000us-gaap_ReinsuranceRecoverableGuaranteeBenefits
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_SecondaryGuaranteesMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_UniversalLifeMember		     1,802,000,000us-gaap_ReinsuranceRecoverableGuaranteeBenefits
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_SecondaryGuaranteesMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_UniversalLifeMember
Reinsurance Recoverables [Member] | Guaranteed Minimum Death Benefit [Member]          
Movement in Changes in gross GMDB/GMWB and UL secondary guarantee benefits [Roll Forward]          
Deferred Policy Acquisition Cost, Amortization Expense, Effect of Adjustments to Estimated Gross Profit 66,000,000us-gaap_DeferredPolicyAcquisitionCostAmortizationExpenseEffectOfAdjustmentsToEstimatedGrossProfit
/ us-gaap_BalanceSheetLocationAxis
= hlic_ReinsuranceRecoverablesMember
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember		 81,000,000us-gaap_DeferredPolicyAcquisitionCostAmortizationExpenseEffectOfAdjustmentsToEstimatedGrossProfit
/ us-gaap_BalanceSheetLocationAxis
= hlic_ReinsuranceRecoverablesMember
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember		      
Reinsurance Recoverables [Member] | Universal Life [Member] | Secondary Guarantees [Member]          
Movement in Changes in gross GMDB/GMWB and UL secondary guarantee benefits [Roll Forward]          
Deferred Policy Acquisition Cost, Amortization Expense, Effect of Adjustments to Estimated Gross Profit 0us-gaap_DeferredPolicyAcquisitionCostAmortizationExpenseEffectOfAdjustmentsToEstimatedGrossProfit
/ us-gaap_BalanceSheetLocationAxis
= hlic_ReinsuranceRecoverablesMember
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= hlic_SecondaryGuaranteesMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_UniversalLifeMember		        
UNITED STATES          
Movement in Changes in gross GMDB/GMWB and UL secondary guarantee benefits [Roll Forward]          
Liabilities for Guarantees on Long-Duration Contracts, Reinsurance Recoverable       0us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsReinsuranceRecoverable
/ invest_InvestmentGeographicRegionAxis
= country_US		  
Schedule of Fair Value of Separate Accounts [Abstract]          
Reinsurance Recoverable Asset Impact of Reinsurance Transaction   0hlic_ReinsuranceRecoverableAssetImpactOfReinsuranceTransaction
/ invest_InvestmentGeographicRegionAxis
= country_US		      
UNITED STATES | Guaranteed Minimum Withdrawal Benefit [Member]          
Account Value by GMDB Type [Abstract]          
Net Amount at Risk by Product and Guarantee, General Account Value 8,500,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeGeneralAccountValue
/ invest_InvestmentGeographicRegionAxis
= country_US
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumWithdrawalBenefitMember		        
Net Amount at Risk by Product and Guarantee, Net Amount at Risk at Annuitization 0us-gaap_NetAmountAtRiskByProductAndGuaranteeNetAmountAtRisk
/ invest_InvestmentGeographicRegionAxis
= country_US
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumWithdrawalBenefitMember		        
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age 70 years        
UNITED STATES | Guaranteed Minimum Death Benefit [Member]          
Account Value by GMDB Type [Abstract]          
Net Amount at Risk by Product and Guarantee, General Account Value 52,861,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeGeneralAccountValue
/ invest_InvestmentGeographicRegionAxis
= country_US
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember		        
Net Amount at Risk by Product and Guarantee, Net Amount at Risk at Annuitization 3,807,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeNetAmountAtRisk
/ invest_InvestmentGeographicRegionAxis
= country_US
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember		        
Net Amount at Risk by Product and Guarantee, Net Amount at Risk at Annuitization 793,000,000us-gaap_NetAmountAtRiskByProductAndGuaranteeNetAmountAtRiskAtAnnuitization
/ invest_InvestmentGeographicRegionAxis
= country_US
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember		        
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age 69 years        
Separate Accounts, Liability 48,852,000,000us-gaap_SeparateAccountsLiability
/ invest_InvestmentGeographicRegionAxis
= country_US
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember		        
JAPAN | Guaranteed Minimum Death Benefit [Member]          
Account Value by GMDB Type [Abstract]          
Separate Accounts, Liability 85,837,000,000us-gaap_SeparateAccountsLiability
/ invest_InvestmentGeographicRegionAxis
= country_JP
/ us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis
= us-gaap_GuaranteedMinimumDeathBenefitMember		        
Equity Securities Including Mutual Funds [Member]          
Schedule of Fair Value of Separate Accounts [Abstract]          
Schedule of Fair Value of Separate Accounts by Major Category of Investment, Fair Value 44,786,000,000us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentFairValue
/ us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentAxis
= hlic_EquitySecuritiesIncludingMutualFundsMember		 52,858,000,000us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentFairValue
/ us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentAxis
= hlic_EquitySecuritiesIncludingMutualFundsMember		      
Cash and Cash Equivalents [Member]          
Schedule of Fair Value of Separate Accounts [Abstract]          
Schedule of Fair Value of Separate Accounts by Major Category of Investment, Fair Value $ 4,066,000,000us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentFairValue
/ us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentAxis
= us-gaap_CashAndCashEquivalentsMember		 $ 4,605,000,000us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentFairValue
/ us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentAxis
= us-gaap_CashAndCashEquivalentsMember		      
[1] Includes accelerated amortization of $352 and $2,374 recognized upon the sale of the Retirement Plans and Individual Life businesses, respectively, in the first quarter of 2013. For further information, see Note 2 - Business Dispositions of Notes to Consolidated Financial Statements.