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Disclosure - Related Party Transactions (Shared Services, Overhead Allocations and Broker-Dealer Transactions - Narrative) (Details) Sheet http://www.brighthousefinancial.com/role/RelatedPartyTransactionsSharedServicesOverheadAllocationsandBrokerDealerTransactionsNarrativeDetails Related Party Transactions (Shared Services, Overhead Allocations and Broker-Dealer Transactions - Narrative) (Details) Details http://www.brighthousefinancial.com/role/RelatedPartyTransactionsTables 102 false false R103.htm 9954781 - Disclosure - Subsequent Events (Details) Sheet http://www.brighthousefinancial.com/role/SubsequentEventsDetails Subsequent Events (Details) Details http://www.brighthousefinancial.com/role/SubsequentEvents 103 false false All Reports Book All Reports [dqc-0015-Negative-Values] Fact us-gaap:InterestCreditedToPolicyholdersAccountBalances has a value of -3000000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:InterestCreditedToPolicyholdersAccountBalances fact are: Context: c-212, Unit: usd, Rule Element Id: 1365. bhl-20230630.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:PolicyholderAccountBalanceWeightedAverageCreditingRate has a value of -0.0015 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:PolicyholderAccountBalanceWeightedAverageCreditingRate fact are: Context: c-217, Unit: number, Rule Element Id: 9216. bhl-20230630.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:DeferredPolicyAcquisitionCostsAdditions has a value of -1000000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:DeferredPolicyAcquisitionCostsAdditions fact are: Context: c-161, Unit: usd, Rule Element Id: 2699. bhl-20230630.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:DeferredPolicyAcquisitionCostsAdditions has a value of -3000000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:DeferredPolicyAcquisitionCostsAdditions fact are: Context: c-204, Unit: usd, Rule Element Id: 2699. bhl-20230630.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:DeferredPolicyAcquisitionCostsAdditions has a value of -1000000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:DeferredPolicyAcquisitionCostsAdditions fact are: Context: c-201, Unit: usd, Rule Element Id: 2699. bhl-20230630.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:MarketRiskBenefitMeasurementInput has a value of -0.0273 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:MarketRiskBenefitMeasurementInput fact are: Context: c-877, Unit: number, Rule Element Id: 9183. bhl-20230630.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:OtherLiabilities has a value of -1000000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:OtherLiabilities fact are: Context: c-1069, Unit: usd, Rule Element Id: 2868. bhl-20230630.htm 4 bhl-20230630.htm bhl-20230630.xsd bhl-20230630_cal.xml bhl-20230630_def.xml bhl-20230630_lab.xml bhl-20230630_pre.xml blic06302023-ex311.htm blic06302023-ex312.htm blic06302023-ex321.htm blic06302023-ex322.htm bhl-20230630_g1.jpg http://fasb.org/srt/2023 http://fasb.org/us-gaap/2023 http://xbrl.sec.gov/dei/2023 http://xbrl.sec.gov/ecd/2023 true true