falseFY20190000059558YesYesNoYes0000059558us-gaap:USStatesAndPoliticalSubdivisionsMember2019-12-310000059558us-gaap:USGovernmentDebtSecuritiesMember2019-12-310000059558us-gaap:ResidentialMortgageBackedSecuritiesMember2019-12-310000059558us-gaap:ForeignGovernmentDebtSecuritiesMember2019-12-310000059558us-gaap:CommercialMortgageBackedSecuritiesMember2019-12-310000059558us-gaap:AssetBackedSecuritiesMember2019-12-310000059558lnc:HybridAndRedeemablePreferredSecuritiesMember2019-12-310000059558us-gaap:USStatesAndPoliticalSubdivisionsMember2018-12-310000059558us-gaap:USGovernmentDebtSecuritiesMember2018-12-310000059558us-gaap:ResidentialMortgageBackedSecuritiesMember2018-12-310000059558us-gaap:ForeignGovernmentDebtSecuritiesMember2018-12-310000059558us-gaap:CommercialMortgageBackedSecuritiesMember2018-12-310000059558us-gaap:AssetBackedSecuritiesMember2018-12-310000059558lnc:HybridAndRedeemablePreferredSecuritiesMember2018-12-310000059558lnc:NonAffiliatedVieOneMember2019-12-310000059558lnc:OtherOperationsMember2017-12-310000059558us-gaap:FixedMaturitiesMemberus-gaap:BondsMemberus-gaap:USTreasuryAndGovernmentMember2019-12-310000059558us-gaap:FixedMaturitiesMemberus-gaap:BondsMemberus-gaap:USStatesAndPoliticalSubdivisionsMember2019-12-310000059558us-gaap:FixedMaturitiesMemberus-gaap:BondsMemberus-gaap:PublicUtilityBondsMember2019-12-310000059558us-gaap:FixedMaturitiesMemberus-gaap:BondsMemberus-gaap:ForeignGovernmentDebtMember2019-12-310000059558us-gaap:FixedMaturitiesMemberus-gaap:BondsMemberus-gaap:AllOtherCorporateBondsMember2019-12-310000059558us-gaap:EquitySecuritiesMemberus-gaap:CommonStockMemberus-gaap:PublicUtilityBondsMember2019-12-310000059558us-gaap:EquitySecuritiesMemberus-gaap:CommonStockMemberus-gaap:IndustrialMiscellaneousAndAllOthersMember2019-12-310000059558us-gaap:EquitySecuritiesMemberus-gaap:CommonStockMemberus-gaap:BanksTrustAndInsuranceEquitiesMember2019-12-310000059558us-gaap:FixedMaturitiesMemberlnc:MortgageBackedAndAssetBackedSecuritiesMember2019-12-310000059558us-gaap:FixedMaturitiesMemberlnc:HybridAndRedeemablePreferredSecuritiesMember2019-12-310000059558us-gaap:EquitySecuritiesMemberus-gaap:NonredeemablePreferredStockMember2019-12-310000059558us-gaap:TradingAssetsExcludingDebtAndEquitySecuritiesMember2019-12-310000059558us-gaap:RealEstateInvestmentMember2019-12-310000059558us-gaap:PolicyLoansMember2019-12-310000059558us-gaap:OtherInvestmentsMember2019-12-310000059558us-gaap:MortgagesMember2019-12-310000059558us-gaap:FixedMaturitiesMember2019-12-310000059558us-gaap:DerivativeMember2019-12-310000059558us-gaap:CommonStockMember2019-01-012019-12-310000059558us-gaap:CommonStockMember2018-01-012018-12-310000059558us-gaap:CommonStockMember2017-01-012017-12-310000059558us-gaap:RetainedEarningsMember2019-12-310000059558us-gaap:CommonStockMember2019-12-310000059558us-gaap:AccumulatedOtherComprehensiveIncomeMember2019-12-310000059558us-gaap:RetainedEarningsMember2018-12-310000059558us-gaap:CommonStockMember2018-12-310000059558us-gaap:AccumulatedOtherComprehensiveIncomeMember2018-12-310000059558us-gaap:CommonStockMember2017-12-310000059558us-gaap:RetainedEarningsMember2016-12-310000059558us-gaap:CommonStockMember2016-12-310000059558us-gaap:AccumulatedOtherComprehensiveIncomeMember2016-12-310000059558lnc:StatutoryAccountingPracticesLesserOfLocAndXxxAdditionalReserveAsSurplusMember2019-12-310000059558lnc:StatutoryAccountingPracticesConservativeValuationRateOnCertainVariableAnnuitiesMember2019-12-310000059558lnc:LlcNotesAndVariableValueSurplusNotesMember2019-12-310000059558lnc:ExcessOfLossReinsuranceTreatiesMember2019-12-310000059558lnc:CalculationOfReservesUsingIndianaUniversalLifeMethodMember2019-12-310000059558lnc:StatutoryAccountingPracticesLesserOfLocAndXxxAdditionalReserveAsSurplusMember2018-12-310000059558lnc:StatutoryAccountingPracticesConservativeValuationRateOnCertainVariableAnnuitiesMember2018-12-310000059558lnc:LlcNotesAndVariableValueSurplusNotesMember2018-12-310000059558lnc:ExcessOfLossReinsuranceTreatiesMember2018-12-310000059558lnc:CalculationOfReservesUsingIndianaUniversalLifeMethodMember2018-12-310000059558lnc:StockOptionsWithServiceConditionsMember2018-12-310000059558lnc:StockOptionsWithPerformanceConditionsMember2018-12-310000059558lnc:StockOptionsWithServiceConditionsMember2019-12-310000059558lnc:StockOptionsWithPerformanceConditionsMember2019-12-310000059558lnc:StockOptionsWithServiceConditionsMember2018-01-012018-12-310000059558lnc:StockOptionsWithPerformanceConditionsMember2018-01-012018-12-310000059558lnc:StockOptionsWithServiceConditionsMember2017-01-012017-12-310000059558lnc:StockOptionsWithPerformanceConditionsMember2017-01-012017-12-310000059558lnc:RestrictedStockUnitsMember2019-12-310000059558lnc:RestrictedStockUnitsMember2018-12-310000059558lnc:RestrictedStockUnitsMember2019-01-012019-12-310000059558lnc:StockOptionsWithServiceConditionsMember2019-01-012019-12-310000059558lnc:StockOptionsWithPerformanceConditionsMember2019-01-012019-12-310000059558lnc:Due2024LiborMemberus-gaap:LongTermDebtMember2019-12-310000059558lnc:Due2048Memberus-gaap:LongTermDebtMember2018-12-310000059558lnc:Due2040Memberus-gaap:LongTermDebtMember2018-12-310000059558lnc:Due2037Memberus-gaap:LongTermDebtMember2018-12-310000059558lnc:Due2036Memberus-gaap:LongTermDebtMember2018-12-310000059558lnc:Due2028Memberus-gaap:LongTermDebtMember2018-12-310000059558lnc:Due2026Memberus-gaap:LongTermDebtMember2018-12-310000059558lnc:Due2025Memberus-gaap:LongTermDebtMember2018-12-310000059558lnc:Due2023Memberus-gaap:LongTermDebtMember2018-12-310000059558lnc:Due2023LiborMemberus-gaap:LongTermDebtMember2018-12-310000059558lnc:Due2022Memberus-gaap:LongTermDebtMember2018-12-310000059558lnc:Due2021Memberus-gaap:LongTermDebtMember2018-12-310000059558lnc:Due2020Memberus-gaap:LongTermDebtMember2018-12-310000059558lnc:AmortizationOfDfelAssociatedWithBenefitRatioUnlockingPreTaxMember2019-01-012019-12-310000059558lnc:AmortizationOfDfelAssociatedWithBenefitRatioUnlockingPreTaxMember2018-01-012018-12-310000059558lnc:AmortizationOfDfelAssociatedWithBenefitRatioUnlockingPreTaxMember2017-01-012017-12-310000059558lnc:AmortizationOfDeferredGainArisingFromReserveChangesOnBusinessSoldThroughReinsurancePreTaxMember2017-01-012017-12-310000059558lnc:SwissReMember2018-12-310000059558lnc:ElectiveContributionMember2019-01-012019-12-310000059558lnc:ElectiveContributionMember2018-01-012018-12-310000059558srt:MaximumMember2018-12-310000059558us-gaap:AssetBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2018-01-012018-12-310000059558us-gaap:AssetBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2017-01-012017-12-310000059558lnc:AssociatedAmortizationOfDacVobaDsiAndDfelMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedNetGainLossFromCashFlowHedgesIncludingPortionAttributableToNoncontrollingInterestMember2019-01-012019-12-310000059558lnc:AssociatedAmortizationOfDacVobaDsiAndDfelMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedNetGainLossFromCashFlowHedgesIncludingPortionAttributableToNoncontrollingInterestMember2018-01-012018-12-310000059558lnc:AssociatedAmortizationOfDacVobaDsiAndDfelMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedNetGainLossFromCashFlowHedgesIncludingPortionAttributableToNoncontrollingInterestMember2017-01-012017-12-310000059558us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2019-01-012019-12-310000059558us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2018-01-012018-12-310000059558us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2017-01-012017-12-310000059558us-gaap:AccumulatedOtherComprehensiveIncomeMember2019-01-012019-12-310000059558us-gaap:AccumulatedOtherComprehensiveIncomeMember2018-01-012018-12-310000059558us-gaap:AccumulatedOtherComprehensiveIncomeMember2017-01-012017-12-310000059558us-gaap:AccumulatedTranslationAdjustmentMember2019-01-012019-12-310000059558us-gaap:AccumulatedTranslationAdjustmentMember2018-01-012018-12-310000059558us-gaap:AccumulatedTranslationAdjustmentMember2017-01-012017-12-310000059558us-gaap:AccountingStandardsUpdate201602Member2018-12-310000059558us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedNetGainLossFromCashFlowHedgesIncludingPortionAttributableToNoncontrollingInterestMember2019-01-012019-12-310000059558us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedNetGainLossFromCashFlowHedgesIncludingPortionAttributableToNoncontrollingInterestMember2018-01-012018-12-310000059558us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedNetGainLossFromCashFlowHedgesIncludingPortionAttributableToNoncontrollingInterestMember2017-01-012017-12-310000059558srt:ScenarioForecastMemberlnc:AccountingStandardsUpdate201905Member2020-03-310000059558us-gaap:ForeignExchangeContractMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedNetGainLossFromCashFlowHedgesIncludingPortionAttributableToNoncontrollingInterestMember2018-01-012018-12-310000059558lnc:LibertyTransactionMember2018-05-012018-12-310000059558lnc:ReturnOfNetDepositsMember2019-01-012019-12-310000059558lnc:MinimumReturnMember2019-01-012019-12-310000059558lnc:AnniversaryContractValueMember2019-01-012019-12-310000059558lnc:ReturnOfNetDepositsMember2018-01-012018-12-310000059558lnc:MinimumReturnMember2018-01-012018-12-310000059558lnc:AnniversaryContractValueMember2018-01-012018-12-310000059558us-gaap:VariableAnnuityMemberus-gaap:FixedIncomeSecuritiesMember2019-12-310000059558us-gaap:VariableAnnuityMemberlnc:InternationalEquityMember2019-12-310000059558us-gaap:VariableAnnuityMemberlnc:DomesticEquityMember2019-12-310000059558us-gaap:VariableAnnuityMemberus-gaap:FixedIncomeSecuritiesMember2018-12-310000059558us-gaap:VariableAnnuityMemberlnc:InternationalEquityMember2018-12-310000059558us-gaap:VariableAnnuityMemberlnc:DomesticEquityMember2018-12-310000059558lnc:ReturnOfNetDepositsMember2019-12-310000059558lnc:AnniversaryContractValueMember2019-12-310000059558lnc:ReturnOfNetDepositsMember2018-12-310000059558lnc:AnniversaryContractValueMember2018-12-310000059558srt:MaximumMemberus-gaap:PendingLitigationMember2019-12-310000059558lnc:LineOfCreditFacilityDueOctober2031Member2019-01-012019-12-310000059558lnc:LineOfCreditFacilityDueAugust2031Member2019-01-012019-12-310000059558lnc:FiveYearRevolvingCreditFacilityMember2019-01-012019-12-310000059558lnc:AnnuitiesSegmentMembersrt:MinimumMember2019-12-310000059558lnc:AnnuitiesSegmentMembersrt:MaximumMember2019-12-310000059558lnc:LifeSegmentMembersrt:MinimumMember2019-12-310000059558lnc:LifeSegmentMembersrt:MaximumMember2019-12-310000059558us-gaap:FairValueInputsLevel3Memberlnc:FutureContractBenefitsIndexedAnnuityAndUniversalLifeContractsEmbeddedDerivativesMemberlnc:FutureContractBenefitsMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558us-gaap:FairValueInputsLevel3Memberus-gaap:DerivativeFinancialInstrumentsLiabilitiesMemberus-gaap:OtherLiabilitiesMember2019-12-310000059558us-gaap:FairValueInputsLevel3Memberlnc:IndexedAnnuityContractsMemberlnc:FutureContractBenefitsMember2019-12-310000059558us-gaap:FairValueInputsLevel3Memberlnc:GLBCededEmbeddedDerivativesMemberus-gaap:OtherLiabilitiesMember2019-12-310000059558us-gaap:FairValueInputsLevel2Memberus-gaap:DerivativeFinancialInstrumentsLiabilitiesMemberus-gaap:OtherLiabilitiesMember2019-12-310000059558lnc:GLBDirectEmbeddedDerivativesMemberus-gaap:OtherLiabilitiesMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558us-gaap:FairValueInputsLevel2Memberlnc:ReinsuranceRelatedEmbeddedDerivativesMember2019-12-310000059558us-gaap:DerivativeFinancialInstrumentsLiabilitiesMemberus-gaap:OtherLiabilitiesMember2019-12-310000059558lnc:ReinsuranceRelatedEmbeddedDerivativesMember2019-12-310000059558us-gaap:FairValueInputsLevel3Memberus-gaap:DerivativeFinancialInstrumentsLiabilitiesMemberus-gaap:OtherLiabilitiesMember2018-12-310000059558us-gaap:FairValueInputsLevel3Memberlnc:IndexedAnnuityContractsMemberlnc:FutureContractBenefitsMember2018-12-310000059558us-gaap:FairValueInputsLevel2Memberus-gaap:DerivativeFinancialInstrumentsLiabilitiesMemberus-gaap:OtherLiabilitiesMember2018-12-310000059558us-gaap:FairValueInputsLevel2Memberlnc:ReinsuranceRelatedEmbeddedDerivativesMember2018-12-310000059558us-gaap:DerivativeFinancialInstrumentsLiabilitiesMemberus-gaap:OtherLiabilitiesMember2018-12-310000059558lnc:ReinsuranceRelatedEmbeddedDerivativesMember2018-12-310000059558us-gaap:InterestRateContractMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedNetGainLossFromCashFlowHedgesIncludingPortionAttributableToNoncontrollingInterestMember2019-01-012019-12-310000059558us-gaap:InterestRateContractMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedNetGainLossFromCashFlowHedgesIncludingPortionAttributableToNoncontrollingInterestMember2018-01-012018-12-310000059558us-gaap:InterestRateContractMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedNetGainLossFromCashFlowHedgesIncludingPortionAttributableToNoncontrollingInterestMember2017-01-012017-12-310000059558us-gaap:VariableAnnuityMember2018-01-012018-12-310000059558lnc:OtherOperationsMember2019-01-012019-12-310000059558lnc:NetImpactFromTaxCutsAndJobsActMember2019-01-012019-12-310000059558lnc:GainLossOnEarlyExtinguishmentOfDebtTaxReconcilingItemMember2019-01-012019-12-310000059558lnc:ExcludedRealizedGainLossPreTaxReconcilingItemMember2019-01-012019-12-310000059558lnc:BenefitRatioUnlockingTaxReconcilingItemMember2019-01-012019-12-310000059558lnc:AcquisitionAndIntegrationCostsRelatedToMergersAndAcquisitionsMember2019-01-012019-12-310000059558lnc:OtherOperationsMember2018-01-012018-12-310000059558lnc:NetImpactFromTaxCutsAndJobsActMember2018-01-012018-12-310000059558lnc:GainLossOnEarlyExtinguishmentOfDebtTaxReconcilingItemMember2018-01-012018-12-310000059558lnc:ExcludedRealizedGainLossPreTaxReconcilingItemMember2018-01-012018-12-310000059558lnc:BenefitRatioUnlockingTaxReconcilingItemMember2018-01-012018-12-310000059558lnc:AcquisitionAndIntegrationCostsRelatedToMergersAndAcquisitionsMember2018-01-012018-12-310000059558lnc:OtherOperationsMember2017-01-012017-12-310000059558lnc:NetImpactFromTaxCutsAndJobsActMember2017-01-012017-12-310000059558lnc:GainLossOnEarlyExtinguishmentOfDebtTaxReconcilingItemMember2017-01-012017-12-310000059558lnc:ExcludedRealizedGainLossPreTaxReconcilingItemMember2017-01-012017-12-310000059558lnc:BenefitRatioUnlockingTaxReconcilingItemMember2017-01-012017-12-310000059558srt:MaximumMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2019-12-310000059558srt:MaximumMemberus-gaap:ResidentialPortfolioSegmentMember2018-12-310000059558us-gaap:LongTermDebtMemberlnc:DiscontinuedHedgesMember2019-12-310000059558us-gaap:AvailableforsaleSecuritiesMemberus-gaap:FixedMaturitiesMember2019-01-012019-12-310000059558us-gaap:TradingAssetsExcludingDebtAndEquitySecuritiesMember2019-01-012019-12-310000059558us-gaap:RealEstateInvestmentMember2019-01-012019-12-310000059558us-gaap:PolicyLoansMember2019-01-012019-12-310000059558us-gaap:OtherInvestmentsMember2019-01-012019-12-310000059558us-gaap:MortgagesMember2019-01-012019-12-310000059558us-gaap:EquitySecuritiesMember2019-01-012019-12-310000059558us-gaap:CashAndCashEquivalentsMember2019-01-012019-12-310000059558lnc:ConsentFeesMember2019-01-012019-12-310000059558lnc:CommercialMortgageLoanPrepaymentAndBondMakeWholePremiumsMember2019-01-012019-12-310000059558lnc:AlternativeInvestmentsMember2019-01-012019-12-310000059558us-gaap:AvailableforsaleSecuritiesMemberus-gaap:FixedMaturitiesMember2018-01-012018-12-310000059558us-gaap:TradingAssetsExcludingDebtAndEquitySecuritiesMember2018-01-012018-12-310000059558us-gaap:RealEstateInvestmentMember2018-01-012018-12-310000059558us-gaap:PolicyLoansMember2018-01-012018-12-310000059558us-gaap:OtherInvestmentsMember2018-01-012018-12-310000059558us-gaap:MortgagesMember2018-01-012018-12-310000059558us-gaap:EquitySecuritiesMember2018-01-012018-12-310000059558us-gaap:CashAndCashEquivalentsMember2018-01-012018-12-310000059558lnc:ConsentFeesMember2018-01-012018-12-310000059558lnc:CommercialMortgageLoanPrepaymentAndBondMakeWholePremiumsMember2018-01-012018-12-310000059558lnc:AlternativeInvestmentsMember2018-01-012018-12-310000059558us-gaap:AvailableforsaleSecuritiesMemberus-gaap:FixedMaturitiesMember2017-01-012017-12-310000059558us-gaap:TradingAssetsExcludingDebtAndEquitySecuritiesMember2017-01-012017-12-310000059558us-gaap:RealEstateInvestmentMember2017-01-012017-12-310000059558us-gaap:PolicyLoansMember2017-01-012017-12-310000059558us-gaap:OtherInvestmentsMember2017-01-012017-12-310000059558us-gaap:MortgagesMember2017-01-012017-12-310000059558us-gaap:CashAndCashEquivalentsMember2017-01-012017-12-310000059558lnc:EquityAfsSecuritiesMember2017-01-012017-12-310000059558lnc:ConsentFeesMember2017-01-012017-12-310000059558lnc:CommercialMortgageLoanPrepaymentAndBondMakeWholePremiumsMember2017-01-012017-12-310000059558lnc:AlternativeInvestmentsMember2017-01-012017-12-310000059558us-gaap:DistributionRightsMember2019-01-012019-12-310000059558us-gaap:CustomerRelationshipsMember2019-01-012019-12-310000059558lnc:SalesForceIntangiblesMember2019-01-012019-12-310000059558lnc:IndexedAnnuityContractsMemberlnc:FutureContractBenefitsMember2019-12-310000059558lnc:GLBCededEmbeddedDerivativesMemberus-gaap:OtherLiabilitiesMember2019-12-310000059558lnc:IndexedAnnuityContractsMemberlnc:FutureContractBenefitsMember2018-12-310000059558lnc:IndexedAnnuityContractsMember2018-12-310000059558us-gaap:USGovernmentDebtSecuritiesMemberus-gaap:FixedMaturitiesMember2017-12-310000059558us-gaap:ResidentialMortgageBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2017-12-310000059558us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FixedMaturitiesMember2017-12-310000059558us-gaap:CorporateBondSecuritiesMemberus-gaap:FixedMaturitiesMember2017-12-310000059558us-gaap:CommercialMortgageBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2017-12-310000059558us-gaap:CollateralizedLoanObligationsMemberus-gaap:FixedMaturitiesMember2017-12-310000059558lnc:IndexedAnnuityContractsMemberus-gaap:OtherAssetsMember2017-12-310000059558lnc:IndexedAnnuityContractsMemberlnc:FutureContractBenefitsMember2017-12-310000059558lnc:HybridAndRedeemablePreferredSecuritiesMemberus-gaap:FixedMaturitiesMember2017-12-310000059558lnc:GLBDirectEmbeddedDerivativesMemberus-gaap:OtherLiabilitiesMember2017-12-310000059558lnc:GLBDirectEmbeddedDerivativesMemberus-gaap:OtherAssetsMember2017-12-310000059558lnc:GLBCededEmbeddedDerivativesMemberus-gaap:OtherAssetsMember2017-12-310000059558us-gaap:TradingAssetsExcludingDebtAndEquitySecuritiesMember2017-12-310000059558us-gaap:EquitySecuritiesMember2017-12-310000059558us-gaap:DerivativeFinancialInstrumentsAssetsMember2017-12-310000059558lnc:EquityAfsSecuritiesMember2017-12-310000059558us-gaap:ResidentialMortgageBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2016-12-310000059558us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FixedMaturitiesMember2016-12-310000059558us-gaap:CreditDefaultSwapMemberus-gaap:OtherLiabilitiesMember2016-12-310000059558us-gaap:CorporateBondSecuritiesMemberus-gaap:FixedMaturitiesMember2016-12-310000059558us-gaap:CommercialMortgageBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2016-12-310000059558us-gaap:CollateralizedLoanObligationsMemberus-gaap:FixedMaturitiesMember2016-12-310000059558lnc:IndexedAnnuityContractsMemberlnc:FutureContractBenefitsMember2016-12-310000059558lnc:HybridAndRedeemablePreferredSecuritiesMemberus-gaap:FixedMaturitiesMember2016-12-310000059558lnc:GLBCededEmbeddedDerivativesMemberus-gaap:OtherAssetsMember2016-12-310000059558us-gaap:TradingAssetsExcludingDebtAndEquitySecuritiesMember2016-12-310000059558us-gaap:EquitySecuritiesMember2016-12-310000059558us-gaap:DerivativeFinancialInstrumentsAssetsMember2016-12-310000059558lnc:LibertyTransactionMemberus-gaap:CorporateBondSecuritiesMemberus-gaap:FixedMaturitiesMember2019-01-012019-12-310000059558lnc:LibertyTransactionMemberus-gaap:AssetBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2019-01-012019-12-310000059558lnc:EquityAfsSecuritiesMember2018-01-012018-12-310000059558us-gaap:USGovernmentDebtSecuritiesMemberus-gaap:FixedMaturitiesMember2019-01-012019-12-310000059558us-gaap:USGovernmentDebtSecuritiesMemberus-gaap:FixedMaturitiesMember2017-01-012017-12-310000059558lnc:HybridAndRedeemablePreferredSecuritiesMemberus-gaap:FixedMaturitiesMember2019-01-012019-12-310000059558us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FixedMaturitiesMember2018-01-012018-12-310000059558lnc:HybridAndRedeemablePreferredSecuritiesMemberus-gaap:FixedMaturitiesMember2018-01-012018-12-310000059558us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FixedMaturitiesMember2017-01-012017-12-310000059558lnc:GLBDirectEmbeddedDerivativesMemberus-gaap:OtherAssetsMember2019-01-012019-12-310000059558lnc:GLBCededEmbeddedDerivativesMemberus-gaap:OtherLiabilitiesMember2019-01-012019-12-310000059558lnc:GLBCededEmbeddedDerivativesMemberus-gaap:OtherAssetsMember2019-01-012019-12-310000059558lnc:IndexedAnnuityContractsMember2019-01-012019-12-310000059558lnc:GLBDirectEmbeddedDerivativesMemberus-gaap:OtherLiabilitiesMember2018-01-012018-12-310000059558lnc:GLBDirectEmbeddedDerivativesMemberus-gaap:OtherAssetsMember2018-01-012018-12-310000059558lnc:GLBCededEmbeddedDerivativesMemberus-gaap:OtherAssetsMember2018-01-012018-12-310000059558us-gaap:USStatesAndPoliticalSubdivisionsMemberus-gaap:FixedMaturitiesMember2017-01-012017-12-310000059558us-gaap:CreditDefaultSwapMemberus-gaap:OtherLiabilitiesMember2017-01-012017-12-310000059558lnc:GLBDirectEmbeddedDerivativesMemberus-gaap:OtherLiabilitiesMember2017-01-012017-12-310000059558lnc:GLBDirectEmbeddedDerivativesMemberus-gaap:OtherAssetsMember2017-01-012017-12-310000059558lnc:GLBCededEmbeddedDerivativesMemberus-gaap:OtherAssetsMember2017-01-012017-12-310000059558us-gaap:DerivativeFinancialInstrumentsAssetsMemberlnc:RealizedGainLossMember2019-01-012019-12-310000059558lnc:IndexedAnnuityContractsMemberlnc:RealizedGainLossMember2019-01-012019-12-310000059558lnc:GuaranteedLivingBenefitsEmbeddedDerivativeReservesMemberlnc:RealizedGainLossMember2019-01-012019-12-310000059558us-gaap:DerivativeFinancialInstrumentsAssetsMemberlnc:RealizedGainLossMember2018-01-012018-12-310000059558lnc:IndexedAnnuityContractsMemberlnc:RealizedGainLossMember2018-01-012018-12-310000059558lnc:GuaranteedLivingBenefitsEmbeddedDerivativeReservesMemberlnc:RealizedGainLossMember2018-01-012018-12-310000059558us-gaap:DerivativeFinancialInstrumentsAssetsMemberlnc:RealizedGainLossMember2017-01-012017-12-310000059558lnc:IndexedAnnuityContractsMemberlnc:RealizedGainLossMember2017-01-012017-12-310000059558lnc:GuaranteedLivingBenefitsEmbeddedDerivativeReservesMemberlnc:RealizedGainLossMember2017-01-012017-12-310000059558lnc:InvestedAssetsMemberus-gaap:FinancialServiceMember2019-12-310000059558lnc:InvestedAssetsMemberus-gaap:FederalNationalMortgageAssociationCertificatesAndObligationsFNMAMember2019-12-310000059558lnc:InvestedAssetsMemberus-gaap:FederalHomeLoanMortgageCorporationCertificatesAndObligationsFHLMCMember2019-12-310000059558lnc:InvestedAssetsMemberlnc:ConsumerNonCyclicalIndustryMember2019-12-310000059558lnc:InvestedAssetsMemberus-gaap:FinancialServiceMember2018-12-310000059558lnc:InvestedAssetsMemberus-gaap:FederalNationalMortgageAssociationCertificatesAndObligationsFNMAMember2018-12-310000059558lnc:InvestedAssetsMemberus-gaap:FederalHomeLoanMortgageCorporationCertificatesAndObligationsFHLMCMember2018-12-310000059558lnc:InvestedAssetsMemberlnc:ConsumerNonCyclicalIndustryMember2018-12-310000059558srt:MinimumMemberus-gaap:EquitySecuritiesMemberus-gaap:FairValueInputsLevel3Memberlnc:MeasurementInputLiquidityDurationAdjustmentMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MaximumMemberus-gaap:EquitySecuritiesMemberus-gaap:FairValueInputsLevel3Memberlnc:MeasurementInputLiquidityDurationAdjustmentMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558us-gaap:PerformanceSharesMember2019-12-310000059558us-gaap:EmployeeStockOptionMember2019-12-310000059558lnc:RestrictedStockUnitsAndNonVestedStockMember2019-12-310000059558us-gaap:PerformanceSharesMember2018-12-310000059558us-gaap:EmployeeStockOptionMember2018-12-310000059558lnc:RestrictedStockUnitsAndNonVestedStockMember2018-12-310000059558us-gaap:PerformanceSharesMember2017-12-310000059558us-gaap:EmployeeStockOptionMember2017-12-310000059558lnc:StockAppreciationRightsMember2017-12-310000059558lnc:RestrictedStockUnitsAndNonVestedStockMember2017-12-310000059558us-gaap:RetainedEarningsMember2019-01-012019-12-310000059558us-gaap:RetainedEarningsMember2018-01-012018-12-310000059558us-gaap:RetainedEarningsMember2017-01-012017-12-310000059558us-gaap:IndexedAnnuityMember2019-01-012019-12-310000059558lnc:DerivativeInvestmentsMemberus-gaap:CreditRiskContractMemberus-gaap:NondesignatedMember2019-12-310000059558lnc:DerivativeInvestmentsMemberus-gaap:ForeignExchangeContractMemberus-gaap:NondesignatedMember2018-12-310000059558us-gaap:InterestRateContractMember2019-01-012019-12-310000059558us-gaap:ForeignExchangeContractMember2019-01-012019-12-310000059558srt:MinimumMemberus-gaap:FairValueInputsLevel3Memberlnc:GLBDirectEmbeddedDerivativesMemberus-gaap:OtherLiabilitiesMemberus-gaap:MeasurementInputWithdrawalRateMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MinimumMemberus-gaap:FairValueInputsLevel3Memberlnc:GLBDirectEmbeddedDerivativesMemberus-gaap:OtherLiabilitiesMemberus-gaap:MeasurementInputPriceVolatilityMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MinimumMemberus-gaap:FairValueInputsLevel3Memberlnc:GLBDirectEmbeddedDerivativesMemberus-gaap:OtherLiabilitiesMemberus-gaap:MeasurementInputLapseRateMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MinimumMemberus-gaap:FairValueInputsLevel3Memberlnc:GLBDirectEmbeddedDerivativesMemberus-gaap:OtherLiabilitiesMemberus-gaap:MeasurementInputCreditSpreadMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MinimumMemberus-gaap:FairValueInputsLevel3Memberlnc:GLBDirectEmbeddedDerivativesMemberus-gaap:OtherLiabilitiesMemberlnc:MeasurementInputPremiumsUtilizationRateMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MinimumMemberus-gaap:FairValueInputsLevel3Memberlnc:GLBDirectEmbeddedDerivativesMemberus-gaap:OtherLiabilitiesMemberlnc:MeasurementInputClaimsUtilizationRateMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MinimumMemberus-gaap:FairValueInputsLevel3Memberlnc:FutureContractBenefitsIndexedAnnuityAndUniversalLifeContractsEmbeddedDerivativesMemberlnc:FutureContractBenefitsMemberus-gaap:MeasurementInputLapseRateMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MaximumMemberus-gaap:FairValueInputsLevel3Memberlnc:GLBDirectEmbeddedDerivativesMemberus-gaap:OtherLiabilitiesMemberus-gaap:MeasurementInputWithdrawalRateMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MaximumMemberus-gaap:FairValueInputsLevel3Memberlnc:GLBDirectEmbeddedDerivativesMemberus-gaap:OtherLiabilitiesMemberus-gaap:MeasurementInputPriceVolatilityMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MaximumMemberus-gaap:FairValueInputsLevel3Memberlnc:GLBDirectEmbeddedDerivativesMemberus-gaap:OtherLiabilitiesMemberus-gaap:MeasurementInputLapseRateMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MaximumMemberus-gaap:FairValueInputsLevel3Memberlnc:GLBDirectEmbeddedDerivativesMemberus-gaap:OtherLiabilitiesMemberus-gaap:MeasurementInputCreditSpreadMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MaximumMemberus-gaap:FairValueInputsLevel3Memberlnc:GLBDirectEmbeddedDerivativesMemberus-gaap:OtherLiabilitiesMemberlnc:MeasurementInputPremiumsUtilizationRateMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MaximumMemberus-gaap:FairValueInputsLevel3Memberlnc:GLBDirectEmbeddedDerivativesMemberus-gaap:OtherLiabilitiesMemberlnc:MeasurementInputClaimsUtilizationRateMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MaximumMemberus-gaap:FairValueInputsLevel3Memberlnc:FutureContractBenefitsIndexedAnnuityAndUniversalLifeContractsEmbeddedDerivativesMemberlnc:FutureContractBenefitsMemberus-gaap:MeasurementInputLapseRateMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558us-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:OtherLiabilitiesMember2019-12-310000059558us-gaap:CarryingReportedAmountFairValueDisclosureMemberus-gaap:OtherLiabilitiesMember2019-12-310000059558srt:ParentCompanyMemberus-gaap:OtherLiabilitiesMember2019-12-310000059558us-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:OtherLiabilitiesMember2018-12-310000059558us-gaap:CarryingReportedAmountFairValueDisclosureMemberus-gaap:OtherLiabilitiesMember2018-12-310000059558us-gaap:InterestRateContractMemberus-gaap:NondesignatedMemberlnc:RealizedGainLossMember2019-01-012019-12-310000059558us-gaap:ForeignExchangeContractMemberus-gaap:NondesignatedMemberlnc:RealizedGainLossMember2019-01-012019-12-310000059558us-gaap:EquityContractMemberus-gaap:NondesignatedMemberlnc:RealizedGainLossMember2019-01-012019-12-310000059558lnc:ReinsuranceRelatedMemberus-gaap:NondesignatedMemberlnc:RealizedGainLossMember2019-01-012019-12-310000059558lnc:IndexedAnnuityContractsMemberus-gaap:NondesignatedMemberlnc:RealizedGainLossMember2019-01-012019-12-310000059558lnc:GlbEmbeddedDerivativesReservesMemberus-gaap:NondesignatedMemberlnc:RealizedGainLossMember2019-01-012019-12-310000059558us-gaap:InterestRateContractMemberus-gaap:CashFlowHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:InterestExpenseMember2019-01-012019-12-310000059558us-gaap:InterestRateContractMemberus-gaap:CashFlowHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMemberlnc:NetInvestmentIncomeMember2019-01-012019-12-310000059558us-gaap:ForeignExchangeContractMemberus-gaap:CashFlowHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMemberlnc:RealizedGainLossMember2019-01-012019-12-310000059558us-gaap:ForeignExchangeContractMemberus-gaap:CashFlowHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMemberlnc:NetInvestmentIncomeMember2019-01-012019-12-310000059558us-gaap:InterestRateContractMemberus-gaap:FairValueHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:InterestExpenseMember2018-01-012018-12-310000059558us-gaap:InterestRateContractMemberus-gaap:FairValueHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMemberlnc:RealizedGainLossMember2018-01-012018-12-310000059558us-gaap:InterestRateContractMemberus-gaap:FairValueHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMemberlnc:NetInvestmentIncomeMember2018-01-012018-12-310000059558us-gaap:InterestRateContractMemberus-gaap:CashFlowHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:InterestExpenseMember2018-01-012018-12-310000059558us-gaap:InterestRateContractMemberus-gaap:CashFlowHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMemberlnc:NetInvestmentIncomeMember2018-01-012018-12-310000059558us-gaap:ForeignExchangeContractMemberus-gaap:CashFlowHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMemberlnc:RealizedGainLossMember2018-01-012018-12-310000059558us-gaap:InterestRateContractMemberus-gaap:NondesignatedMemberlnc:RealizedGainLossMember2018-01-012018-12-310000059558us-gaap:ForeignExchangeContractMemberus-gaap:NondesignatedMemberlnc:RealizedGainLossMember2018-01-012018-12-310000059558us-gaap:EquityContractMemberus-gaap:NondesignatedMemberlnc:UnderwritingAcquisitionInsuranceAndOtherExpensesMember2018-01-012018-12-310000059558us-gaap:EquityContractMemberus-gaap:NondesignatedMemberlnc:RealizedGainLossMember2018-01-012018-12-310000059558lnc:ReinsuranceRelatedMemberus-gaap:NondesignatedMemberlnc:RealizedGainLossMember2018-01-012018-12-310000059558lnc:IndexedAnnuityContractsMemberus-gaap:NondesignatedMemberlnc:RealizedGainLossMember2018-01-012018-12-310000059558lnc:GuaranteedLivingBenefitsEmbeddedDerivativeReservesMemberus-gaap:NondesignatedMemberlnc:RealizedGainLossMember2018-01-012018-12-310000059558us-gaap:FairValueHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMember2018-01-012018-12-310000059558us-gaap:CashFlowHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMember2018-01-012018-12-310000059558us-gaap:InterestRateContractMemberus-gaap:FairValueHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:InterestExpenseMember2017-01-012017-12-310000059558us-gaap:InterestRateContractMemberus-gaap:FairValueHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMemberlnc:RealizedGainLossMember2017-01-012017-12-310000059558us-gaap:InterestRateContractMemberus-gaap:FairValueHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMemberlnc:NetInvestmentIncomeMember2017-01-012017-12-310000059558us-gaap:InterestRateContractMemberus-gaap:CashFlowHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:InterestExpenseMember2017-01-012017-12-310000059558us-gaap:InterestRateContractMemberus-gaap:CashFlowHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMemberlnc:NetInvestmentIncomeMember2017-01-012017-12-310000059558us-gaap:ForeignExchangeContractMemberus-gaap:CashFlowHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMemberlnc:RealizedGainLossMember2017-01-012017-12-310000059558us-gaap:ForeignExchangeContractMemberus-gaap:CashFlowHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMemberlnc:NetInvestmentIncomeMember2017-01-012017-12-310000059558us-gaap:InterestRateContractMemberus-gaap:NondesignatedMemberlnc:RealizedGainLossMember2017-01-012017-12-310000059558us-gaap:EquityContractMemberus-gaap:NondesignatedMemberlnc:UnderwritingAcquisitionInsuranceAndOtherExpensesMember2017-01-012017-12-310000059558us-gaap:EquityContractMemberus-gaap:NondesignatedMemberlnc:RealizedGainLossMember2017-01-012017-12-310000059558us-gaap:CreditRiskContractMemberus-gaap:NondesignatedMemberlnc:RealizedGainLossMember2017-01-012017-12-310000059558lnc:ReinsuranceRelatedMemberus-gaap:NondesignatedMemberlnc:RealizedGainLossMember2017-01-012017-12-310000059558lnc:IndexedAnnuityContractsMemberus-gaap:NondesignatedMemberlnc:RealizedGainLossMember2017-01-012017-12-310000059558lnc:GuaranteedLivingBenefitsEmbeddedDerivativeReservesMemberus-gaap:NondesignatedMemberlnc:RealizedGainLossMember2017-01-012017-12-310000059558us-gaap:FairValueHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMember2017-01-012017-12-310000059558us-gaap:CashFlowHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMember2017-01-012017-12-310000059558lnc:ReinsuranceRelatedEmbeddedDerivativesMemberlnc:ReinsuranceRelatedMemberus-gaap:NondesignatedMember2019-12-310000059558lnc:ReinsuranceRelatedEmbeddedDerivativesMemberlnc:ReinsuranceRelatedMemberus-gaap:NondesignatedMember2018-12-310000059558lnc:DerivativeInvestmentsMemberus-gaap:InterestRateContractMemberus-gaap:FairValueHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMember2019-12-310000059558lnc:DerivativeInvestmentsMemberus-gaap:InterestRateContractMemberus-gaap:CashFlowHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMember2019-12-310000059558lnc:DerivativeInvestmentsMemberus-gaap:ForeignExchangeContractMemberus-gaap:CashFlowHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMember2019-12-310000059558us-gaap:OtherAssetsMemberlnc:GLBDirectEmbeddedDerivativesMemberus-gaap:NondesignatedMember2019-12-310000059558lnc:FutureContractBenefitsMemberlnc:IndexedAnnuityContractsMemberus-gaap:NondesignatedMember2019-12-310000059558lnc:DerivativeInvestmentsMemberus-gaap:InterestRateContractMemberus-gaap:NondesignatedMember2019-12-310000059558lnc:DerivativeInvestmentsMemberus-gaap:ForeignExchangeContractMemberus-gaap:NondesignatedMember2019-12-310000059558lnc:DerivativeInvestmentsMemberus-gaap:EquityContractMemberus-gaap:NondesignatedMember2019-12-310000059558us-gaap:CashFlowHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMember2019-12-310000059558lnc:GLBCededEmbeddedDerivativesMemberus-gaap:NondesignatedMember2019-12-310000059558lnc:DerivativeInvestmentsMemberus-gaap:InterestRateContractMemberus-gaap:FairValueHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMember2018-12-310000059558lnc:DerivativeInvestmentsMemberus-gaap:InterestRateContractMemberus-gaap:CashFlowHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMember2018-12-310000059558lnc:DerivativeInvestmentsMemberus-gaap:ForeignExchangeContractMemberus-gaap:CashFlowHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMember2018-12-310000059558us-gaap:OtherAssetsMemberlnc:GLBDirectEmbeddedDerivativesMemberus-gaap:NondesignatedMember2018-12-310000059558lnc:FutureContractBenefitsMemberlnc:IndexedAnnuityContractsMemberus-gaap:NondesignatedMember2018-12-310000059558lnc:DerivativeInvestmentsMemberus-gaap:InterestRateContractMemberus-gaap:NondesignatedMember2018-12-310000059558lnc:DerivativeInvestmentsMemberus-gaap:EquityContractMemberus-gaap:NondesignatedMember2018-12-310000059558us-gaap:CashFlowHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMember2018-12-310000059558lnc:GLBCededEmbeddedDerivativesMemberus-gaap:NondesignatedMember2018-12-310000059558srt:StandardPoorsBBBPlusRatingMember2019-12-310000059558srt:StandardPoorsARatingMember2019-12-310000059558srt:StandardPoorsAPlusRatingMember2019-12-310000059558srt:StandardPoorsAMinusRatingMember2019-12-310000059558srt:StandardPoorsAAMinusRatingMember2019-12-310000059558srt:StandardPoorsBBBPlusRatingMember2018-12-310000059558srt:StandardPoorsARatingMember2018-12-310000059558srt:StandardPoorsAPlusRatingMember2018-12-310000059558srt:StandardPoorsAMinusRatingMember2018-12-310000059558srt:StandardPoorsAAMinusRatingMember2018-12-310000059558srt:MinimumMemberlnc:OtherAssetsGlbReservesEmbeddedDerivativesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:OtherAssetsMemberus-gaap:MeasurementInputWithdrawalRateMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MinimumMemberlnc:OtherAssetsGlbReservesEmbeddedDerivativesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:OtherAssetsMemberus-gaap:MeasurementInputPriceVolatilityMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MinimumMemberlnc:OtherAssetsGlbReservesEmbeddedDerivativesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:OtherAssetsMemberus-gaap:MeasurementInputLapseRateMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MinimumMemberlnc:OtherAssetsGlbReservesEmbeddedDerivativesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:OtherAssetsMemberus-gaap:MeasurementInputCreditSpreadMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MinimumMemberlnc:OtherAssetsGlbReservesEmbeddedDerivativesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:OtherAssetsMemberlnc:MeasurementInputPremiumsUtilizationRateMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MinimumMemberlnc:OtherAssetsGlbReservesEmbeddedDerivativesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:OtherAssetsMemberlnc:MeasurementInputClaimsUtilizationRateMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MaximumMemberlnc:OtherAssetsGlbReservesEmbeddedDerivativesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:OtherAssetsMemberus-gaap:MeasurementInputWithdrawalRateMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MaximumMemberlnc:OtherAssetsGlbReservesEmbeddedDerivativesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:OtherAssetsMemberus-gaap:MeasurementInputPriceVolatilityMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MaximumMemberlnc:OtherAssetsGlbReservesEmbeddedDerivativesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:OtherAssetsMemberus-gaap:MeasurementInputLapseRateMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MaximumMemberlnc:OtherAssetsGlbReservesEmbeddedDerivativesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:OtherAssetsMemberus-gaap:MeasurementInputCreditSpreadMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MaximumMemberlnc:OtherAssetsGlbReservesEmbeddedDerivativesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:OtherAssetsMemberlnc:MeasurementInputPremiumsUtilizationRateMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MaximumMemberlnc:OtherAssetsGlbReservesEmbeddedDerivativesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:OtherAssetsMemberlnc:MeasurementInputClaimsUtilizationRateMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MinimumMemberlnc:IndexedAnnuityContractsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:MeasurementInputLapseRateMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MaximumMemberlnc:IndexedAnnuityContractsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:MeasurementInputLapseRateMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558lnc:AtheneHoldingLtd.Memberus-gaap:TradingAssetsExcludingDebtAndEquitySecuritiesMember2019-12-310000059558lnc:AtheneHoldingLtd.Memberus-gaap:OtherInvestmentsMember2019-12-310000059558lnc:AtheneHoldingLtd.Memberus-gaap:InvestmentIncomeMember2019-12-310000059558lnc:AtheneHoldingLtd.Memberus-gaap:EquitySecuritiesMember2019-12-310000059558lnc:AtheneHoldingLtd.Memberus-gaap:DerivativeMember2019-12-310000059558lnc:AtheneHoldingLtd.Memberus-gaap:CommercialLoanMember2019-12-310000059558lnc:AtheneHoldingLtd.Memberus-gaap:CashMember2019-12-310000059558lnc:AtheneHoldingLtd.Memberus-gaap:AvailableforsaleSecuritiesMember2019-12-310000059558lnc:AtheneHoldingLtd.Member2018-12-310000059558us-gaap:USStatesAndPoliticalSubdivisionsMember2019-12-310000059558us-gaap:USGovernmentDebtSecuritiesMember2019-12-310000059558us-gaap:ForeignGovernmentDebtSecuritiesMember2019-12-310000059558us-gaap:DefinedBenefitPlanEquitySecuritiesMember2019-12-310000059558us-gaap:CorporateBondSecuritiesMember2019-12-310000059558us-gaap:CashAndCashEquivalentsMember2019-12-310000059558lnc:DefinedBenefitOtherInvestmentsMember2019-12-310000059558lnc:BulkAnnuityInsurancePolicyMember2019-12-310000059558us-gaap:USStatesAndPoliticalSubdivisionsMember2018-12-310000059558us-gaap:USGovernmentDebtSecuritiesMember2018-12-310000059558us-gaap:ForeignGovernmentDebtSecuritiesMember2018-12-310000059558us-gaap:DefinedBenefitPlanEquitySecuritiesMember2018-12-310000059558us-gaap:CorporateBondSecuritiesMember2018-12-310000059558us-gaap:CashAndCashEquivalentsMember2018-12-310000059558lnc:DefinedBenefitOtherInvestmentsMember2018-12-310000059558us-gaap:PensionPlansDefinedBenefitMember2019-01-012019-12-310000059558us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2019-01-012019-12-310000059558us-gaap:PensionPlansDefinedBenefitMember2018-01-012018-12-310000059558us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2018-01-012018-12-310000059558us-gaap:PensionPlansDefinedBenefitMember2019-12-310000059558us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2019-12-310000059558us-gaap:PensionPlansDefinedBenefitMember2018-12-310000059558us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2018-12-310000059558lnc:RetirementPlanServicesSegmentMember2017-12-310000059558lnc:LifeSegmentMember2017-12-310000059558lnc:GroupProtectionSegmentMember2017-12-310000059558lnc:AnnuitiesSegmentMember2017-12-310000059558lnc:StockAppreciationRightsMember2019-12-310000059558lnc:StockAppreciationRightsMember2018-12-310000059558lnc:Due2048Memberus-gaap:LongTermDebtMember2019-12-310000059558lnc:Due2040Memberus-gaap:LongTermDebtMember2019-12-310000059558lnc:Due2037Memberus-gaap:LongTermDebtMember2019-12-310000059558lnc:Due2036Memberus-gaap:LongTermDebtMember2019-12-310000059558lnc:Due2030Memberus-gaap:LongTermDebtMember2019-12-310000059558lnc:Due2028Memberus-gaap:LongTermDebtMember2019-12-310000059558lnc:Due2026Memberus-gaap:LongTermDebtMember2019-12-310000059558lnc:Due2025Memberus-gaap:LongTermDebtMember2019-12-310000059558lnc:Due2023Memberus-gaap:LongTermDebtMember2019-12-310000059558lnc:Due2022Memberus-gaap:LongTermDebtMember2019-12-310000059558lnc:Due2021Memberus-gaap:LongTermDebtMember2019-12-310000059558lnc:Due2020Memberus-gaap:LongTermDebtMember2019-12-310000059558lnc:Notes6.15Due2036Member2019-12-310000059558lnc:Notes4.85Due2021Member2019-12-310000059558lnc:Due2019Member2018-12-310000059558lnc:CapitalSecuritiesMember2019-12-310000059558lnc:DerivativeContractMaturing12202024Member2019-01-012019-12-310000059558lnc:Due2067Memberus-gaap:LongTermDebtMember2019-01-012019-12-310000059558lnc:Due2066TwoOfTwoMemberus-gaap:LongTermDebtMember2019-01-012019-12-310000059558lnc:Due2024LiborMemberus-gaap:LongTermDebtMember2019-01-012019-12-310000059558lnc:Due2023LiborMemberus-gaap:LongTermDebtMember2019-01-012019-12-310000059558us-gaap:ForeignExchangeContractMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedNetGainLossFromCashFlowHedgesIncludingPortionAttributableToNoncontrollingInterestMember2019-01-012019-12-310000059558lnc:AssociatedAmortizationOfDacVobaDsiAndDfelMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2019-01-012019-12-310000059558us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2019-01-012019-12-310000059558us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberlnc:UnrealizedOtherThanTemporaryImpairmentOnAvailableForSaleSecuritiesMember2019-01-012019-12-310000059558us-gaap:CashFlowHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:OtherComprehensiveIncomeMember2018-01-012018-12-310000059558lnc:AssociatedAmortizationOfDacVobaDsiAndDfelMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2018-01-012018-12-310000059558us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2018-01-012018-12-310000059558us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberlnc:UnrealizedOtherThanTemporaryImpairmentOnAvailableForSaleSecuritiesMember2018-01-012018-12-310000059558us-gaap:ForeignExchangeContractMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedNetGainLossFromCashFlowHedgesIncludingPortionAttributableToNoncontrollingInterestMember2017-01-012017-12-310000059558us-gaap:CashFlowHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:OtherComprehensiveIncomeMember2017-01-012017-12-310000059558lnc:ChangeInDacVobaDsiAndDfelMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberlnc:UnrealizedOtherThanTemporaryImpairmentOnAvailableForSaleSecuritiesMember2017-01-012017-12-310000059558lnc:AssociatedAmortizationOfDacVobaDsiAndDfelMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2017-01-012017-12-310000059558us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2017-01-012017-12-310000059558us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberlnc:UnrealizedOtherThanTemporaryImpairmentOnAvailableForSaleSecuritiesMember2017-01-012017-12-310000059558us-gaap:RetainedEarningsMember2017-12-310000059558us-gaap:AccumulatedOtherComprehensiveIncomeMember2017-12-310000059558lnc:DerivativeContractMaturing12202024Member2019-12-310000059558stpr:TXus-gaap:GeographicConcentrationRiskMemberus-gaap:MortgagesMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2019-01-012019-12-310000059558stpr:FLus-gaap:GeographicConcentrationRiskMemberus-gaap:MortgagesMemberus-gaap:ResidentialPortfolioSegmentMember2019-01-012019-12-310000059558stpr:CAus-gaap:GeographicConcentrationRiskMemberus-gaap:MortgagesMemberus-gaap:ResidentialPortfolioSegmentMember2019-01-012019-12-310000059558stpr:CAus-gaap:GeographicConcentrationRiskMemberus-gaap:MortgagesMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2019-01-012019-12-310000059558lnc:InvestedAssetsMemberus-gaap:FinancialServiceMember2019-01-012019-12-310000059558lnc:InvestedAssetsMemberus-gaap:FederalNationalMortgageAssociationCertificatesAndObligationsFNMAMember2019-01-012019-12-310000059558lnc:InvestedAssetsMemberus-gaap:FederalHomeLoanMortgageCorporationCertificatesAndObligationsFHLMCMember2019-01-012019-12-310000059558lnc:InvestedAssetsMemberlnc:ConsumerNonCyclicalIndustryMember2019-01-012019-12-310000059558stpr:TXus-gaap:GeographicConcentrationRiskMemberus-gaap:MortgagesMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2018-01-012018-12-310000059558stpr:FLus-gaap:GeographicConcentrationRiskMemberus-gaap:MortgagesMemberus-gaap:ResidentialPortfolioSegmentMember2018-01-012018-12-310000059558stpr:CAus-gaap:GeographicConcentrationRiskMemberus-gaap:MortgagesMemberus-gaap:ResidentialPortfolioSegmentMember2018-01-012018-12-310000059558stpr:CAus-gaap:GeographicConcentrationRiskMemberus-gaap:MortgagesMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2018-01-012018-12-310000059558lnc:InvestedAssetsMemberus-gaap:FinancialServiceMember2018-01-012018-12-310000059558lnc:InvestedAssetsMemberus-gaap:FederalNationalMortgageAssociationCertificatesAndObligationsFNMAMember2018-01-012018-12-310000059558lnc:InvestedAssetsMemberus-gaap:FederalHomeLoanMortgageCorporationCertificatesAndObligationsFHLMCMember2018-01-012018-12-310000059558lnc:InvestedAssetsMemberlnc:ConsumerNonCyclicalIndustryMember2018-01-012018-12-310000059558us-gaap:CommonStockMember2019-12-310000059558us-gaap:CommonStockMember2018-12-310000059558us-gaap:CommonStockMember2017-12-310000059558us-gaap:CommonStockMember2016-12-310000059558us-gaap:InterestRateContractMemberus-gaap:FairValueHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:InterestExpenseMember2019-01-012019-12-310000059558us-gaap:InterestRateContractMemberus-gaap:FairValueHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMemberlnc:NetInvestmentIncomeMember2019-01-012019-12-310000059558srt:ParentCompanyMember2017-12-310000059558srt:ParentCompanyMember2016-12-310000059558lnc:LibertyTransactionMember2018-01-012018-12-310000059558lnc:LibertyTransactionMember2018-12-310000059558lnc:LibertyTransactionMember2019-01-012019-12-3100000595582019-10-012019-12-3100000595582019-07-012019-09-3000000595582019-04-012019-06-3000000595582019-01-012019-03-3100000595582018-10-012018-12-3100000595582018-07-012018-09-3000000595582018-04-012018-06-3000000595582018-01-012018-03-310000059558us-gaap:FixedMaturitiesMember2019-01-012019-12-310000059558us-gaap:FixedMaturitiesMember2018-01-012018-12-310000059558us-gaap:FixedMaturitiesMember2017-01-012017-12-310000059558lnc:EquityAfsSecuritiesMember2017-01-012017-12-310000059558us-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:FixedMaturitiesMember2019-12-310000059558us-gaap:CarryingReportedAmountFairValueDisclosureMemberus-gaap:FixedMaturitiesMember2019-12-310000059558us-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:FixedMaturitiesMember2018-12-310000059558us-gaap:CarryingReportedAmountFairValueDisclosureMemberus-gaap:FixedMaturitiesMember2018-12-310000059558lnc:StructuredSecuritiesMemberus-gaap:FixedMaturitiesMember2019-12-310000059558lnc:FixedMaturityAfsSecuritiesOtherThanStructuredSecuritiesMemberus-gaap:FixedMaturitiesMember2019-12-310000059558us-gaap:FixedMaturitiesMember2019-12-310000059558us-gaap:LifeAndAnnuityInsuranceProductLineMemberlnc:ReinsuranceRelatedMember2019-01-012019-12-310000059558us-gaap:AccidentAndHealthInsuranceSegmentMemberlnc:ReinsuranceRelatedMember2019-01-012019-12-310000059558lnc:ReinsuranceRelatedMember2019-01-012019-12-310000059558us-gaap:LifeAndAnnuityInsuranceProductLineMemberlnc:ReinsuranceRelatedMember2018-01-012018-12-310000059558us-gaap:AccidentAndHealthInsuranceSegmentMemberlnc:ReinsuranceRelatedMember2018-01-012018-12-310000059558lnc:ReinsuranceRelatedMember2018-01-012018-12-310000059558us-gaap:LifeAndAnnuityInsuranceProductLineMemberlnc:ReinsuranceRelatedMember2017-01-012017-12-310000059558us-gaap:AccidentAndHealthInsuranceSegmentMemberlnc:ReinsuranceRelatedMember2017-01-012017-12-310000059558lnc:ReinsuranceRelatedMember2017-01-012017-12-310000059558us-gaap:FixedMaturitiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558us-gaap:FixedMaturitiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:CorporateBondSecuritiesMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558us-gaap:FixedMaturitiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:AssetBackedSecuritiesMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558us-gaap:FixedMaturitiesMemberus-gaap:FairValueInputsLevel3Memberlnc:HybridAndRedeemablePreferredSecuritiesMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558lnc:OtherAssetsGlbReservesEmbeddedDerivativesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:OtherAssetsMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558us-gaap:FairValueInputsLevel3Memberus-gaap:USGovernmentDebtSecuritiesMemberus-gaap:FixedMaturitiesMember2019-12-310000059558us-gaap:FairValueInputsLevel3Memberus-gaap:ResidentialMortgageBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2019-12-310000059558us-gaap:FairValueInputsLevel3Memberus-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FixedMaturitiesMember2019-12-310000059558us-gaap:FairValueInputsLevel3Memberus-gaap:CorporateBondSecuritiesMemberus-gaap:FixedMaturitiesMember2019-12-310000059558us-gaap:FairValueInputsLevel3Memberus-gaap:CommercialMortgageBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2019-12-310000059558us-gaap:FairValueInputsLevel3Memberus-gaap:AssetBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2019-12-310000059558us-gaap:FairValueInputsLevel3Memberlnc:HybridAndRedeemablePreferredSecuritiesMemberus-gaap:FixedMaturitiesMember2019-12-310000059558us-gaap:FairValueInputsLevel3Memberlnc:GLBDirectEmbeddedDerivativesMemberus-gaap:OtherAssetsMember2019-12-310000059558us-gaap:FairValueInputsLevel3Memberlnc:GLBCededEmbeddedDerivativesMemberus-gaap:OtherAssetsMember2019-12-310000059558us-gaap:FairValueInputsLevel2Memberus-gaap:USStatesAndPoliticalSubdivisionsMemberus-gaap:FixedMaturitiesMember2019-12-310000059558us-gaap:FairValueInputsLevel2Memberus-gaap:USGovernmentDebtSecuritiesMemberus-gaap:FixedMaturitiesMember2019-12-310000059558us-gaap:FairValueInputsLevel2Memberus-gaap:ResidentialMortgageBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2019-12-310000059558us-gaap:FairValueInputsLevel2Memberus-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FixedMaturitiesMember2019-12-310000059558us-gaap:FairValueInputsLevel2Memberus-gaap:CorporateBondSecuritiesMemberus-gaap:FixedMaturitiesMember2019-12-310000059558us-gaap:FairValueInputsLevel2Memberus-gaap:CommercialMortgageBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2019-12-310000059558us-gaap:FairValueInputsLevel2Memberus-gaap:AssetBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2019-12-310000059558us-gaap:FairValueInputsLevel2Memberlnc:HybridAndRedeemablePreferredSecuritiesMemberus-gaap:FixedMaturitiesMember2019-12-310000059558us-gaap:FairValueInputsLevel1Memberus-gaap:USGovernmentDebtSecuritiesMemberus-gaap:FixedMaturitiesMember2019-12-310000059558us-gaap:FairValueInputsLevel1Memberlnc:HybridAndRedeemablePreferredSecuritiesMemberus-gaap:FixedMaturitiesMember2019-12-310000059558us-gaap:EquitySecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558lnc:IndexedAnnuityContractsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558us-gaap:USStatesAndPoliticalSubdivisionsMemberus-gaap:FixedMaturitiesMember2019-12-310000059558us-gaap:USGovernmentDebtSecuritiesMemberus-gaap:FixedMaturitiesMember2019-12-310000059558us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FixedMaturitiesMember2019-12-310000059558us-gaap:FairValueInputsLevel3Memberus-gaap:TradingAssetsExcludingDebtAndEquitySecuritiesMember2019-12-310000059558us-gaap:FairValueInputsLevel3Memberus-gaap:EquitySecuritiesMember2019-12-310000059558us-gaap:FairValueInputsLevel3Memberus-gaap:DerivativeFinancialInstrumentsAssetsMember2019-12-310000059558us-gaap:FairValueInputsLevel3Memberlnc:IndexedAnnuityContractsMember2019-12-310000059558us-gaap:FairValueInputsLevel2Memberus-gaap:TradingAssetsExcludingDebtAndEquitySecuritiesMember2019-12-310000059558us-gaap:FairValueInputsLevel2Memberus-gaap:EquitySecuritiesMember2019-12-310000059558us-gaap:FairValueInputsLevel2Memberus-gaap:DerivativeFinancialInstrumentsAssetsMember2019-12-310000059558us-gaap:FairValueInputsLevel2Memberus-gaap:CashAndCashEquivalentsMember2019-12-310000059558us-gaap:FairValueInputsLevel2Memberlnc:SeperateAccountAssetsMember2019-12-310000059558us-gaap:FairValueInputsLevel1Memberus-gaap:TradingAssetsExcludingDebtAndEquitySecuritiesMember2019-12-310000059558us-gaap:FairValueInputsLevel1Memberus-gaap:EquitySecuritiesMember2019-12-310000059558us-gaap:FairValueInputsLevel1Memberlnc:SeperateAccountAssetsMember2019-12-310000059558lnc:HybridAndRedeemablePreferredSecuritiesMemberus-gaap:FixedMaturitiesMember2019-12-310000059558lnc:GLBDirectEmbeddedDerivativesMemberus-gaap:OtherAssetsMember2019-12-310000059558lnc:GLBCededEmbeddedDerivativesMemberus-gaap:OtherAssetsMember2019-12-310000059558us-gaap:TradingAssetsExcludingDebtAndEquitySecuritiesMember2019-12-310000059558us-gaap:FairValueInputsLevel3Member2019-12-310000059558us-gaap:FairValueInputsLevel2Member2019-12-310000059558us-gaap:FairValueInputsLevel1Member2019-12-310000059558us-gaap:EquitySecuritiesMember2019-12-310000059558us-gaap:DerivativeFinancialInstrumentsAssetsMember2019-12-310000059558us-gaap:CashAndCashEquivalentsMember2019-12-310000059558lnc:SeperateAccountAssetsMember2019-12-310000059558lnc:IndexedAnnuityContractsMember2019-12-310000059558us-gaap:FairValueInputsLevel3Memberus-gaap:ResidentialMortgageBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2018-12-310000059558us-gaap:FairValueInputsLevel3Memberus-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FixedMaturitiesMember2018-12-310000059558us-gaap:FairValueInputsLevel3Memberus-gaap:CorporateBondSecuritiesMemberus-gaap:FixedMaturitiesMember2018-12-310000059558us-gaap:FairValueInputsLevel3Memberus-gaap:CommercialMortgageBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2018-12-310000059558us-gaap:FairValueInputsLevel3Memberus-gaap:CollateralizedLoanObligationsMemberus-gaap:FixedMaturitiesMember2018-12-310000059558us-gaap:FairValueInputsLevel3Memberlnc:IndexedAnnuityContractsMemberus-gaap:OtherAssetsMember2018-12-310000059558us-gaap:FairValueInputsLevel3Memberlnc:HybridAndRedeemablePreferredSecuritiesMemberus-gaap:FixedMaturitiesMember2018-12-310000059558us-gaap:FairValueInputsLevel3Memberlnc:GLBDirectEmbeddedDerivativesMemberus-gaap:OtherAssetsMember2018-12-310000059558us-gaap:FairValueInputsLevel3Memberlnc:GLBCededEmbeddedDerivativesMemberus-gaap:OtherAssetsMember2018-12-310000059558us-gaap:FairValueInputsLevel2Memberus-gaap:USStatesAndPoliticalSubdivisionsMemberus-gaap:FixedMaturitiesMember2018-12-310000059558us-gaap:FairValueInputsLevel2Memberus-gaap:USGovernmentDebtSecuritiesMemberus-gaap:FixedMaturitiesMember2018-12-310000059558us-gaap:FairValueInputsLevel2Memberus-gaap:ResidentialMortgageBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2018-12-310000059558us-gaap:FairValueInputsLevel2Memberus-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FixedMaturitiesMember2018-12-310000059558us-gaap:FairValueInputsLevel2Memberus-gaap:CorporateBondSecuritiesMemberus-gaap:FixedMaturitiesMember2018-12-310000059558us-gaap:FairValueInputsLevel2Memberus-gaap:CommercialMortgageBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2018-12-310000059558us-gaap:FairValueInputsLevel2Memberus-gaap:CollateralizedLoanObligationsMemberus-gaap:FixedMaturitiesMember2018-12-310000059558us-gaap:FairValueInputsLevel2Memberlnc:HybridAndRedeemablePreferredSecuritiesMemberus-gaap:FixedMaturitiesMember2018-12-310000059558us-gaap:FairValueInputsLevel1Memberus-gaap:USGovernmentDebtSecuritiesMemberus-gaap:FixedMaturitiesMember2018-12-310000059558us-gaap:FairValueInputsLevel1Memberlnc:HybridAndRedeemablePreferredSecuritiesMemberus-gaap:FixedMaturitiesMember2018-12-310000059558us-gaap:USStatesAndPoliticalSubdivisionsMemberus-gaap:FixedMaturitiesMember2018-12-310000059558us-gaap:USGovernmentDebtSecuritiesMemberus-gaap:FixedMaturitiesMember2018-12-310000059558us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FixedMaturitiesMember2018-12-310000059558us-gaap:FairValueInputsLevel3Memberus-gaap:TradingAssetsExcludingDebtAndEquitySecuritiesMember2018-12-310000059558us-gaap:FairValueInputsLevel3Memberus-gaap:EquitySecuritiesMember2018-12-310000059558us-gaap:FairValueInputsLevel3Memberus-gaap:DerivativeFinancialInstrumentsAssetsMember2018-12-310000059558us-gaap:FairValueInputsLevel2Memberus-gaap:TradingAssetsExcludingDebtAndEquitySecuritiesMember2018-12-310000059558us-gaap:FairValueInputsLevel2Memberus-gaap:EquitySecuritiesMember2018-12-310000059558us-gaap:FairValueInputsLevel2Memberus-gaap:DerivativeFinancialInstrumentsAssetsMember2018-12-310000059558us-gaap:FairValueInputsLevel2Memberus-gaap:CashAndCashEquivalentsMember2018-12-310000059558us-gaap:FairValueInputsLevel2Memberlnc:SeperateAccountAssetsMember2018-12-310000059558us-gaap:FairValueInputsLevel1Memberus-gaap:TradingAssetsExcludingDebtAndEquitySecuritiesMember2018-12-310000059558us-gaap:FairValueInputsLevel1Memberus-gaap:OtherInvestmentsMember2018-12-310000059558us-gaap:FairValueInputsLevel1Memberus-gaap:EquitySecuritiesMember2018-12-310000059558us-gaap:FairValueInputsLevel1Memberlnc:SeperateAccountAssetsMember2018-12-310000059558us-gaap:CollateralizedLoanObligationsMemberus-gaap:FixedMaturitiesMember2018-12-310000059558lnc:IndexedAnnuityContractsMemberus-gaap:OtherAssetsMember2018-12-310000059558lnc:HybridAndRedeemablePreferredSecuritiesMemberus-gaap:FixedMaturitiesMember2018-12-310000059558lnc:GLBDirectEmbeddedDerivativesMemberus-gaap:OtherAssetsMember2018-12-310000059558lnc:GLBCededEmbeddedDerivativesMemberus-gaap:OtherAssetsMember2018-12-310000059558us-gaap:TradingAssetsExcludingDebtAndEquitySecuritiesMember2018-12-310000059558us-gaap:OtherInvestmentsMember2018-12-310000059558us-gaap:FairValueInputsLevel3Member2018-12-310000059558us-gaap:FairValueInputsLevel2Member2018-12-310000059558us-gaap:FairValueInputsLevel1Member2018-12-310000059558us-gaap:EquitySecuritiesMember2018-12-310000059558us-gaap:DerivativeFinancialInstrumentsAssetsMember2018-12-310000059558us-gaap:CashAndCashEquivalentsMember2018-12-310000059558lnc:SeperateAccountAssetsMember2018-12-310000059558lnc:RetirementPlanServicesSegmentMember2019-12-310000059558lnc:OtherOperationsMember2019-12-310000059558lnc:LifeSegmentMember2019-12-310000059558lnc:GroupProtectionSegmentMember2019-12-310000059558lnc:AnnuitiesSegmentMember2019-12-310000059558lnc:RetirementPlanServicesSegmentMember2018-12-310000059558lnc:OtherOperationsMember2018-12-310000059558lnc:LifeSegmentMember2018-12-310000059558lnc:GroupProtectionSegmentMember2018-12-310000059558lnc:AnnuitiesSegmentMember2018-12-310000059558us-gaap:PerformanceSharesMember2019-01-012019-12-310000059558us-gaap:EmployeeStockOptionMember2019-01-012019-12-310000059558lnc:RestrictedStockUnitsAndNonVestedStockMember2019-01-012019-12-310000059558us-gaap:PerformanceSharesMember2018-01-012018-12-310000059558us-gaap:EmployeeStockOptionMember2018-01-012018-12-310000059558lnc:StockAppreciationRightsMember2018-01-012018-12-310000059558lnc:RestrictedStockUnitsAndNonVestedStockMember2018-01-012018-12-310000059558us-gaap:PerformanceSharesMember2017-01-012017-12-310000059558us-gaap:EmployeeStockOptionMember2017-01-012017-12-310000059558lnc:StockAppreciationRightsMember2017-01-012017-12-310000059558lnc:RestrictedStockUnitsAndNonVestedStockMember2017-01-012017-12-310000059558lnc:LimitedPartnershipsAndLimitedLiabilityCompaniesMember2019-01-012019-12-310000059558lnc:LimitedPartnershipsAndLimitedLiabilityCompaniesMember2018-01-012018-12-310000059558us-gaap:AccumulatedTranslationAdjustmentMember2019-12-310000059558us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2019-12-310000059558us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2019-12-310000059558lnc:UnrealizedOtherThanTemporaryImpairmentOnAvailableForSaleSecuritiesMember2019-12-310000059558lnc:UnrealizedGainLossOnDerivativeInstrumentsMember2019-12-310000059558us-gaap:AccumulatedTranslationAdjustmentMember2018-12-310000059558us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2018-12-310000059558us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2018-12-310000059558lnc:UnrealizedOtherThanTemporaryImpairmentOnAvailableForSaleSecuritiesMember2018-12-310000059558lnc:UnrealizedGainLossOnDerivativeInstrumentsMember2018-12-310000059558us-gaap:AccumulatedTranslationAdjustmentMember2017-12-310000059558us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2017-12-310000059558us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2017-12-310000059558lnc:UnrealizedOtherThanTemporaryImpairmentOnAvailableForSaleSecuritiesMember2017-12-310000059558lnc:UnrealizedGainLossOnDerivativeInstrumentsMember2017-12-310000059558us-gaap:AccumulatedTranslationAdjustmentMember2016-12-310000059558us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2016-12-310000059558us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2016-12-310000059558lnc:UnrealizedOtherThanTemporaryImpairmentOnAvailableForSaleSecuritiesMember2016-12-310000059558lnc:UnrealizedGainLossOnDerivativeInstrumentsMember2016-12-310000059558lnc:ReinsuranceRelatedMember2019-12-310000059558lnc:ReinsuranceRelatedMember2018-12-310000059558lnc:ReinsuranceRelatedMember2017-12-310000059558us-gaap:ResidentialMortgageBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2019-12-310000059558us-gaap:CorporateBondSecuritiesMemberus-gaap:FixedMaturitiesMember2019-12-310000059558us-gaap:CommercialMortgageBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2019-12-310000059558us-gaap:AssetBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2019-12-310000059558us-gaap:ResidentialMortgageBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2018-12-310000059558us-gaap:CorporateBondSecuritiesMemberus-gaap:FixedMaturitiesMember2018-12-310000059558us-gaap:CommercialMortgageBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2018-12-310000059558us-gaap:AssetBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2018-12-310000059558lnc:ProtectiveMember2019-12-310000059558lnc:ProtectiveMember2018-12-310000059558srt:MinimumMemberus-gaap:PerformanceSharesMember2019-01-012019-12-310000059558srt:MaximumMemberus-gaap:PerformanceSharesMember2019-01-012019-12-310000059558lnc:StockAppreciationRightsMember2019-01-012019-12-310000059558us-gaap:MortgageBackedSecuritiesMember2019-12-310000059558us-gaap:MaturityOvernightMemberus-gaap:CorporateBondSecuritiesMember2019-12-310000059558us-gaap:CorporateBondSecuritiesMember2019-12-310000059558us-gaap:MaturityOvernightMemberus-gaap:CorporateBondSecuritiesMember2018-12-310000059558us-gaap:CorporateBondSecuritiesMember2018-12-310000059558us-gaap:MaturityOver90DaysMemberus-gaap:CorporateBondSecuritiesMember2018-01-012018-12-310000059558us-gaap:CorporateBondSecuritiesMember2018-01-012018-12-310000059558us-gaap:MaturityOvernightMember2019-12-310000059558us-gaap:MaturityOvernightMember2018-12-310000059558us-gaap:MaturityOver90DaysMember2018-12-310000059558lnc:AtheneHoldingLtd.Memberus-gaap:CededCreditRiskSecuredMember2019-12-310000059558lnc:AtheneHoldingLtd.Member2019-12-310000059558us-gaap:CreditRiskContractMember2019-12-310000059558us-gaap:InterestRateContractMember2019-12-310000059558us-gaap:ForeignExchangeContractMember2019-12-310000059558us-gaap:EquityContractMember2019-12-310000059558lnc:SwissReMember2019-12-310000059558us-gaap:VariableAnnuityMember2019-12-310000059558us-gaap:VariableAnnuityMember2018-12-310000059558us-gaap:PerformingFinancingReceivableMemberus-gaap:ResidentialPortfolioSegmentMember2019-12-310000059558us-gaap:NonperformingFinancingReceivableMemberus-gaap:ResidentialPortfolioSegmentMember2019-12-310000059558us-gaap:PerformingFinancingReceivableMemberus-gaap:ResidentialPortfolioSegmentMember2018-12-310000059558us-gaap:NonperformingFinancingReceivableMemberus-gaap:ResidentialPortfolioSegmentMember2018-12-310000059558us-gaap:EstimateOfFairValueFairValueDisclosureMemberlnc:GLBCededEmbeddedDerivativesMemberus-gaap:OtherLiabilitiesMember2019-12-310000059558us-gaap:CarryingReportedAmountFairValueDisclosureMemberlnc:GLBCededEmbeddedDerivativesMemberus-gaap:OtherLiabilitiesMember2019-12-310000059558us-gaap:EquitySecuritiesMember2018-01-012018-12-310000059558us-gaap:TotalReturnSwapMember2019-12-310000059558us-gaap:TotalReturnSwapMember2018-12-310000059558us-gaap:ResidentialPortfolioSegmentMember2019-12-310000059558us-gaap:CommercialRealEstatePortfolioSegmentMember2019-12-310000059558us-gaap:ResidentialPortfolioSegmentMember2018-12-310000059558us-gaap:CommercialRealEstatePortfolioSegmentMember2018-12-310000059558lnc:NonAffiliatedVieTwoMember2019-12-310000059558srt:ParentCompanyMember2019-12-310000059558srt:ParentCompanyMember2018-12-310000059558lnc:LineOfCreditFacilityDueOctober2031Member2019-12-310000059558lnc:LineOfCreditFacilityDueAugust2031Member2019-12-310000059558lnc:FiveYearRevolvingCreditFacilityMember2019-12-310000059558us-gaap:EstimateOfFairValueFairValueDisclosureMember2019-12-310000059558us-gaap:CarryingReportedAmountFairValueDisclosureMember2019-12-310000059558us-gaap:EstimateOfFairValueFairValueDisclosureMember2018-12-310000059558us-gaap:CarryingReportedAmountFairValueDisclosureMember2018-12-310000059558us-gaap:CommercialRealEstatePortfolioSegmentMember2018-01-012018-12-310000059558lnc:MinimumReturnMember2019-12-310000059558lnc:MinimumReturnMember2018-12-310000059558us-gaap:EstimateOfFairValueFairValueDisclosureMemberlnc:FutureContractBenefitsMember2019-12-310000059558us-gaap:CarryingReportedAmountFairValueDisclosureMemberlnc:FutureContractBenefitsMember2019-12-310000059558us-gaap:EstimateOfFairValueFairValueDisclosureMemberlnc:FutureContractBenefitsMember2018-12-310000059558us-gaap:CarryingReportedAmountFairValueDisclosureMemberlnc:FutureContractBenefitsMember2018-12-310000059558us-gaap:DistributionRightsMemberlnc:GroupProtectionSegmentMember2019-12-310000059558us-gaap:CustomerRelationshipsMemberlnc:GroupProtectionSegmentMember2019-12-310000059558us-gaap:ContractualRightsMemberlnc:RetirementPlanServicesSegmentMember2019-12-310000059558lnc:SalesForceMemberlnc:LifeSegmentMember2019-12-310000059558lnc:InsuranceLicensesMemberlnc:GroupProtectionSegmentMember2019-12-310000059558us-gaap:DistributionRightsMemberlnc:GroupProtectionSegmentMember2018-12-310000059558us-gaap:CustomerRelationshipsMemberlnc:GroupProtectionSegmentMember2018-12-310000059558us-gaap:ContractualRightsMemberlnc:RetirementPlanServicesSegmentMember2018-12-310000059558lnc:SalesForceMemberlnc:LifeSegmentMember2018-12-310000059558lnc:InsuranceLicensesMemberlnc:GroupProtectionSegmentMember2018-12-310000059558us-gaap:ResidentialPortfolioSegmentMember2018-01-012018-12-310000059558us-gaap:ResidentialMortgageBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2019-01-012019-12-310000059558us-gaap:CommercialMortgageBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2019-01-012019-12-310000059558us-gaap:AssetBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2019-01-012019-12-310000059558lnc:IndexedAnnuityContractsMemberus-gaap:OtherAssetsMember2019-01-012019-12-310000059558lnc:IndexedAnnuityContractsMemberlnc:FutureContractBenefitsMember2019-01-012019-12-310000059558us-gaap:TradingAssetsExcludingDebtAndEquitySecuritiesMember2019-01-012019-12-310000059558us-gaap:EquitySecuritiesMember2019-01-012019-12-310000059558us-gaap:USGovernmentDebtSecuritiesMemberus-gaap:FixedMaturitiesMember2018-01-012018-12-310000059558us-gaap:ResidentialMortgageBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2018-01-012018-12-310000059558us-gaap:CommercialMortgageBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2018-01-012018-12-310000059558us-gaap:CollateralizedLoanObligationsMemberus-gaap:FixedMaturitiesMember2018-01-012018-12-310000059558lnc:IndexedAnnuityContractsMemberus-gaap:OtherAssetsMember2018-01-012018-12-310000059558lnc:IndexedAnnuityContractsMemberlnc:FutureContractBenefitsMember2018-01-012018-12-310000059558us-gaap:TradingAssetsExcludingDebtAndEquitySecuritiesMember2018-01-012018-12-310000059558us-gaap:ResidentialMortgageBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2017-01-012017-12-310000059558us-gaap:CommercialMortgageBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2017-01-012017-12-310000059558us-gaap:CollateralizedLoanObligationsMemberus-gaap:FixedMaturitiesMember2017-01-012017-12-310000059558lnc:IndexedAnnuityContractsMemberus-gaap:OtherAssetsMember2017-01-012017-12-310000059558lnc:IndexedAnnuityContractsMemberlnc:FutureContractBenefitsMember2017-01-012017-12-310000059558lnc:HybridAndRedeemablePreferredSecuritiesMemberus-gaap:FixedMaturitiesMember2017-01-012017-12-310000059558us-gaap:TradingAssetsExcludingDebtAndEquitySecuritiesMember2017-01-012017-12-310000059558us-gaap:EquitySecuritiesMember2017-01-012017-12-310000059558us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FixedMaturitiesMember2019-01-012019-12-310000059558us-gaap:DerivativeFinancialInstrumentsAssetsMember2019-01-012019-12-310000059558us-gaap:DerivativeFinancialInstrumentsAssetsMember2018-01-012018-12-310000059558us-gaap:DerivativeFinancialInstrumentsAssetsMember2017-01-012017-12-310000059558us-gaap:CorporateBondSecuritiesMemberus-gaap:FixedMaturitiesMember2019-01-012019-12-310000059558us-gaap:CorporateBondSecuritiesMemberus-gaap:FixedMaturitiesMember2018-01-012018-12-310000059558us-gaap:CorporateBondSecuritiesMemberus-gaap:FixedMaturitiesMember2017-01-012017-12-310000059558us-gaap:InterestRateContractMemberus-gaap:CashFlowHedgingMemberlnc:UnrealizedGainLossOnDerivativeInstrumentsMember2019-01-012019-12-310000059558us-gaap:ForeignExchangeContractMemberus-gaap:CashFlowHedgingMemberlnc:UnrealizedGainLossOnDerivativeInstrumentsMember2019-01-012019-12-310000059558us-gaap:InterestRateContractMemberus-gaap:CashFlowHedgingMemberlnc:UnrealizedGainLossOnDerivativeInstrumentsMember2018-01-012018-12-310000059558us-gaap:ForeignExchangeContractMemberus-gaap:CashFlowHedgingMemberlnc:UnrealizedGainLossOnDerivativeInstrumentsMember2018-01-012018-12-310000059558us-gaap:InterestRateContractMemberus-gaap:CashFlowHedgingMemberlnc:UnrealizedGainLossOnDerivativeInstrumentsMember2017-01-012017-12-310000059558us-gaap:ForeignExchangeContractMemberus-gaap:CashFlowHedgingMemberlnc:UnrealizedGainLossOnDerivativeInstrumentsMember2017-01-012017-12-310000059558us-gaap:InterestRateContractMemberus-gaap:CashFlowHedgingMemberus-gaap:InterestExpenseMemberlnc:UnrealizedGainLossOnDerivativeInstrumentsMember2019-01-012019-12-310000059558us-gaap:InterestRateContractMemberus-gaap:CashFlowHedgingMemberlnc:NetInvestmentIncomeMemberlnc:UnrealizedGainLossOnDerivativeInstrumentsMember2019-01-012019-12-310000059558us-gaap:ForeignExchangeContractMemberus-gaap:CashFlowHedgingMemberlnc:RealizedGainLossMemberlnc:UnrealizedGainLossOnDerivativeInstrumentsMember2019-01-012019-12-310000059558us-gaap:ForeignExchangeContractMemberus-gaap:CashFlowHedgingMemberlnc:NetInvestmentIncomeMemberlnc:UnrealizedGainLossOnDerivativeInstrumentsMember2019-01-012019-12-310000059558us-gaap:InterestRateContractMemberus-gaap:CashFlowHedgingMemberus-gaap:InterestExpenseMemberlnc:UnrealizedGainLossOnDerivativeInstrumentsMember2018-01-012018-12-310000059558us-gaap:InterestRateContractMemberus-gaap:CashFlowHedgingMemberlnc:NetInvestmentIncomeMemberlnc:UnrealizedGainLossOnDerivativeInstrumentsMember2018-01-012018-12-310000059558us-gaap:ForeignExchangeContractMemberus-gaap:CashFlowHedgingMemberlnc:NetInvestmentIncomeMemberlnc:UnrealizedGainLossOnDerivativeInstrumentsMember2018-01-012018-12-310000059558us-gaap:InterestRateContractMemberus-gaap:CashFlowHedgingMemberus-gaap:InterestExpenseMemberlnc:UnrealizedGainLossOnDerivativeInstrumentsMember2017-01-012017-12-310000059558us-gaap:InterestRateContractMemberus-gaap:CashFlowHedgingMemberlnc:NetInvestmentIncomeMemberlnc:UnrealizedGainLossOnDerivativeInstrumentsMember2017-01-012017-12-310000059558us-gaap:ForeignExchangeContractMemberus-gaap:CashFlowHedgingMemberlnc:RealizedGainLossMemberlnc:UnrealizedGainLossOnDerivativeInstrumentsMember2017-01-012017-12-310000059558us-gaap:ForeignExchangeContractMemberus-gaap:CashFlowHedgingMemberlnc:NetInvestmentIncomeMemberlnc:UnrealizedGainLossOnDerivativeInstrumentsMember2017-01-012017-12-3100000595582017-12-3100000595582016-12-310000059558srt:MaximumMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2019-01-012019-12-310000059558us-gaap:CommercialRealEstatePortfolioSegmentMemberlnc:LoanToValueRatioSixtyFiveToSeventyFourMember2019-12-310000059558us-gaap:CommercialRealEstatePortfolioSegmentMemberlnc:LoanToValueRatioSeventyFiveToOneHundredMember2019-12-310000059558us-gaap:CommercialRealEstatePortfolioSegmentMemberlnc:LoanToValueRatioLessThanSixtyFiveMember2019-12-310000059558us-gaap:CommercialRealEstatePortfolioSegmentMemberlnc:LoanToValueRatioSixtyFiveToSeventyFourMember2018-12-310000059558us-gaap:CommercialRealEstatePortfolioSegmentMemberlnc:LoanToValueRatioSeventyFiveToOneHundredMember2018-12-310000059558us-gaap:CommercialRealEstatePortfolioSegmentMemberlnc:LoanToValueRatioLessThanSixtyFiveMember2018-12-310000059558srt:MinimumMemberus-gaap:FixedMaturitiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:ForeignGovernmentDebtSecuritiesMemberlnc:MeasurementInputLiquidityDurationAdjustmentMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MinimumMemberus-gaap:FixedMaturitiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:CorporateBondSecuritiesMemberlnc:MeasurementInputLiquidityDurationAdjustmentMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MinimumMemberus-gaap:FixedMaturitiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:AssetBackedSecuritiesMemberlnc:MeasurementInputLiquidityDurationAdjustmentMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MinimumMemberus-gaap:FixedMaturitiesMemberus-gaap:FairValueInputsLevel3Memberlnc:HybridAndRedeemablePreferredSecuritiesMemberlnc:MeasurementInputLiquidityDurationAdjustmentMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MaximumMemberus-gaap:FixedMaturitiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:ForeignGovernmentDebtSecuritiesMemberlnc:MeasurementInputLiquidityDurationAdjustmentMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MaximumMemberus-gaap:FixedMaturitiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:CorporateBondSecuritiesMemberlnc:MeasurementInputLiquidityDurationAdjustmentMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MaximumMemberus-gaap:FixedMaturitiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:AssetBackedSecuritiesMemberlnc:MeasurementInputLiquidityDurationAdjustmentMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558srt:MaximumMemberus-gaap:FixedMaturitiesMemberus-gaap:FairValueInputsLevel3Memberlnc:HybridAndRedeemablePreferredSecuritiesMemberlnc:MeasurementInputLiquidityDurationAdjustmentMemberus-gaap:IncomeApproachValuationTechniqueMember2019-12-310000059558us-gaap:ResidentialPortfolioSegmentMember2019-01-012019-12-310000059558us-gaap:CommercialRealEstatePortfolioSegmentMember2019-01-012019-12-310000059558us-gaap:CreditDefaultSwapSellingProtectionMember2019-12-310000059558us-gaap:CommonStockMember2019-01-012019-12-310000059558us-gaap:CommonStockMember2018-01-012018-12-310000059558us-gaap:CommonStockMember2017-01-012017-12-3100000595582018-12-3100000595582019-12-310000059558srt:MinimumMember2019-01-012019-12-310000059558srt:MaximumMember2019-01-012019-12-310000059558srt:MinimumMember2019-12-310000059558srt:MaximumMember2019-12-310000059558lnc:UnrealizedOtherThanTemporaryImpairmentOnAvailableForSaleSecuritiesMember2018-01-012018-12-310000059558lnc:UnrealizedOtherThanTemporaryImpairmentOnAvailableForSaleSecuritiesMember2017-01-012017-12-310000059558lnc:UnrealizedOtherThanTemporaryImpairmentOnAvailableForSaleSecuritiesMember2019-01-012019-12-310000059558lnc:LimitedPartnershipsAndLimitedLiabilityCompaniesMember2019-12-310000059558lnc:LimitedPartnershipsAndLimitedLiabilityCompaniesMember2018-12-310000059558lnc:CapitalSecuritiesMember2019-01-012019-12-310000059558lnc:Due2067Memberus-gaap:LongTermDebtMember2019-12-310000059558lnc:Due2066TwoOfTwoMemberus-gaap:LongTermDebtMember2019-12-310000059558us-gaap:LongTermDebtMember2019-12-310000059558lnc:Due2067Memberus-gaap:LongTermDebtMember2018-12-310000059558lnc:Due2066TwoOfTwoMemberus-gaap:LongTermDebtMember2018-12-310000059558us-gaap:LongTermDebtMember2018-12-310000059558srt:ParentCompanyMember2019-01-012019-12-310000059558srt:ParentCompanyMember2018-01-012018-12-310000059558srt:ParentCompanyMember2017-01-012017-12-310000059558lnc:LibertyTransactionMember2019-12-310000059558lnc:LibertyTransactionMember2018-05-012019-04-300000059558us-gaap:MaterialReconcilingItemsMember2019-01-012019-12-310000059558us-gaap:MaterialReconcilingItemsMember2018-01-012018-12-310000059558us-gaap:MaterialReconcilingItemsMember2017-01-012017-12-310000059558us-gaap:CorporateBondSecuritiesMember2018-12-310000059558lnc:FairValueDeclineGreaterThanTwentyPercentMember2019-12-310000059558lnc:FairValueDeclineGreaterThanTwentyPercentMember2018-12-310000059558us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2019-01-012019-12-310000059558us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2018-01-012018-12-310000059558us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2017-01-012017-12-310000059558lnc:UnrealizedGainLossOnDerivativeInstrumentsMember2019-01-012019-12-310000059558lnc:UnrealizedGainLossOnDerivativeInstrumentsMember2018-01-012018-12-310000059558lnc:UnrealizedGainLossOnDerivativeInstrumentsMember2017-01-012017-12-310000059558us-gaap:InterestExpenseMember2019-01-012019-12-310000059558lnc:RealizedGainLossMember2019-01-012019-12-310000059558lnc:NetInvestmentIncomeMember2019-01-012019-12-310000059558us-gaap:CorporateBondSecuritiesMember2019-12-310000059558us-gaap:LongTermDebtMember2019-12-310000059558us-gaap:FixedMaturitiesMember2019-12-310000059558lnc:AtheneHoldingLtd.Member2019-01-012019-12-310000059558lnc:AtheneHoldingLtd.Member2018-01-012018-12-310000059558lnc:RetirementPlanServicesSegmentMember2019-01-012019-12-310000059558lnc:LifeSegmentMember2019-01-012019-12-310000059558lnc:GroupProtectionSegmentMember2019-01-012019-12-310000059558lnc:AnnuitiesSegmentMember2019-01-012019-12-310000059558lnc:RetirementPlanServicesSegmentMember2018-01-012018-12-310000059558lnc:LifeSegmentMember2018-01-012018-12-310000059558lnc:GroupProtectionSegmentMember2018-01-012018-12-310000059558lnc:AnnuitiesSegmentMember2018-01-012018-12-310000059558lnc:RetirementPlanServicesSegmentMember2017-01-012017-12-310000059558lnc:LifeSegmentMember2017-01-012017-12-310000059558lnc:GroupProtectionSegmentMember2017-01-012017-12-310000059558lnc:AnnuitiesSegmentMember2017-01-012017-12-310000059558us-gaap:SecuritiesAssetsMember2019-01-012019-12-310000059558us-gaap:SecuritiesAssetsMember2018-01-012018-12-310000059558us-gaap:SecuritiesAssetsMember2017-01-012017-12-3100000595582018-01-012018-12-3100000595582017-01-012017-12-3100000595582019-06-3000000595582020-02-1400000595582019-01-012019-12-31iso4217:USDxbrli:shareslnc:contractlnc:itemlnc:securityxbrli:pureiso4217:USDxbrli:shares

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D. C. 20549  

FORM 10-K  

(Mark One)

Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934  

For the fiscal year ended December 31, 2019  

OR

Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934  

For the transition period from                      to                     .

 

Commission File Number 1-6028  

LINCOLN NATIONAL CORPORATION

(Exact name of registrant as specified in its charter)  

Indiana

35-1140070

(State or other jurisdiction of incorporation or organization)

(I.R.S. Employer Identification No.)

150 N. Radnor Chester Road, Suite A305, Radnor, Pennsylvania

19087

(Address of principal executive offices)

(Zip Code)

Registrant’s telephone number, including area code: (484) 583-1400  

Securities registered pursuant to Section 12(b) of the Act:

 

Title of each class

Trading Symbol

Name of each exchange on which registered

Common Stock

LNC

New York Stock Exchange

 

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes     No  

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes      No 

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes       No  

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes     No  

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.  

Large Accelerated Filer

Accelerated Filer

Non-accelerated Filer

Smaller Reporting Company

Emerging Growth Company

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes      No  

The aggregate market value of the shares of the registrant’s common stock held by non-affiliates (based upon the closing price of these shares on the New York Stock Exchange) as of the last business day of the registrant’s most recently completed second fiscal quarter was $11.4 billion. Shares of common stock held by each executive officer and director and each entity that owns 10% or more of the outstanding common stock have been excluded in that such persons may be deemed to be affiliates. The determination of affiliate status is not necessarily a conclusive determination for other purposes.

As of February 14, 2020, 195,371,579 shares of common stock of the registrant were outstanding.

Documents Incorporated by Reference:

Selected portions of the Proxy Statement for the Annual Meeting of Shareholders, scheduled for June 11, 2020, have been incorporated by reference into Part III of this Form 10-K.

________________________________________________________________________________________________________



Lincoln National Corporation

 

Table of Contents

Item

Page

PART I

 

1.

Business

1

 

 

Overview

1

 

 

Business Segments and Other Operations

2

Annuities

2

Retirement Plan Services

4

Life Insurance

6

Group Protection

8

 

 

 

Other Operations

9

 

 

Reinsurance

9

 

 

Reserves

10

 

 

Investments

10

 

 

Financial Strength Ratings

11

 

 

Regulatory

11

 

 

Employees

17

 

 

Available Information

17

1A.

Risk Factors

17

1B.

Unresolved Staff Comments

33

2.

Properties

33

3.

Legal Proceedings

33

4.

Mine Safety Disclosures

33

 

Information About our Executive Officers

34

PART II

 

5.

Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities

35

6.

Selected Financial Data

36

7.

Management’s Discussion and Analysis of Financial Condition and Results of Operations

37

 

 

Forward-Looking Statements – Cautionary Language

37

 

 

Introduction

38

 

 

    Executive Summary

38

    Critical Accounting Policies and Estimates

41

    Acquisitions and Dispositions

51

 

 

Results of Consolidated Operations

51

 

 

Results of Annuities

53

 

 

Results of Retirement Plan Services

58

 

 

Results of Life Insurance

62

 

 

Results of Group Protection

66

 

 

Results of Other Operations

69

Realized Gain (Loss) and Benefit Ratio Unlocking

71

Consolidated Investments

74

Reinsurance

87

 

 

Review of Consolidated Financial Condition

88

 

 

Liquidity and Capital Resources

88


Item

Page

7A.

Quantitative and Qualitative Disclosures About Market Risk

95

8.

Financial Statements and Supplementary Data

102

9.

Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

187

9A.

Controls and Procedures

187

9B.

Other Information

187

PART III

 

10.

Directors, Executive Officers and Corporate Governance

187

11.

Executive Compensation

188

12.

Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

188

13.

Certain Relationships and Related Transactions, and Director Independence

188

14.

Principal Accounting Fees and Services

188

PART IV

 

15.

Exhibits, Financial Statement Schedules

188

Index to Exhibits

189

 

Signatures

193

 

Index to Financial Statement Schedules

FS-1

 


PART I

The “Business” section and other parts of this Form 10-K contain forward-looking statements that involve inherent risks and uncertainties. Statements that are not historical facts, including statements about our beliefs and expectations, and containing words such as “believes,” “estimates,” “anticipates,” “expects” or similar words are forward-looking statements. Our actual results may differ materially from the projected results discussed in the forward-looking statements. Factors that could cause such differences include, but are not limited to, those discussed in “Item 1A. Risk Factors” and in the “Forward-Looking Statements – Cautionary Language” in “Part II – Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations” (“MD&A”) of the Form 10-K. Our consolidated financial statements and the accompanying notes to the consolidated financial statements (“Notes”) are presented in “Part II – Item 8. Financial Statements and Supplementary Data.”

Item 1. Business

OVERVIEW

Lincoln National Corporation (“LNC,” which also may be referred to as “Lincoln,” “we,” “our” or “us”) is a holding company, which operates multiple insurance and retirement businesses through subsidiary companies. Through our business segments, we sell a wide range of wealth protection, accumulation, retirement income and group protection products and solutions. LNC was organized under the laws of the state of Indiana in 1968. We currently maintain our principal executive offices in Radnor, Pennsylvania. “Lincoln Financial Group” is the marketing name for LNC and its subsidiary companies. As of December 31, 2019, LNC had consolidated assets of $334.8 billion and consolidated stockholders’ equity of $19.7 billion.

We provide products and services and report results through four segments as follows:

Business Segments

Annuities

Retirement Plan Services

Life Insurance