falseFY20180000059478Lilly Eli & Co64360000010500000028900000241000002.052.122.3332000000003200000000301000000050000000110067200010576390000.200.130.250.210.160.1454200000808000000.07130.0015P3Y25000000001800000000460600000258800000324400000677500000P3Y0013550000068900000975000005590000038000000130000000019710000024900000016000000005300000000P3Y664000007580000050000001050000007000000007650000092400000P3YP2Y 0000059478 2018-01-01 2018-12-31 0000059478 lly:EffientMember 2018-01-01 2018-12-31 0000059478 lly:ErbituxMember 2018-01-01 2018-12-31 0000059478 lly:DiabetesCollaborationMember 2018-01-01 2018-12-31 0000059478 2019-10-24 2019-10-24 0000059478 lly:A718NotesDueJune12025Member 2019-10-24 2019-10-24 0000059478 lly:A1.625NotesDueJune22026Member 2019-10-24 2019-10-24 0000059478 lly:A6.77NotesDueJanuary12036Member 2019-10-24 2019-10-24 0000059478 lly:A2.125NotesDueJune32030Member 2019-10-24 2019-10-24 0000059478 lly:A1.000NotesDueJune22022Member 2019-10-24 2019-10-24 0000059478 us-gaap:CommonClassAMember 2019-10-24 2019-10-24 0000059478 2017-01-01 2017-12-31 0000059478 2016-01-01 2016-12-31 0000059478 us-gaap:SegmentContinuingOperationsMember 2017-01-01 2017-12-31 0000059478 us-gaap:SegmentContinuingOperationsMember 2016-01-01 2016-12-31 0000059478 us-gaap:SegmentContinuingOperationsMember 2018-01-01 2018-12-31 0000059478 us-gaap:SegmentDiscontinuedOperationsMember 2016-01-01 2016-12-31 0000059478 us-gaap:SegmentDiscontinuedOperationsMember 2017-01-01 2017-12-31 0000059478 us-gaap:SegmentDiscontinuedOperationsMember 2018-01-01 2018-12-31 0000059478 2017-12-31 0000059478 2018-12-31 0000059478 us-gaap:RetainedEarningsMember 2016-01-01 2016-12-31 0000059478 us-gaap:CommonStockMember 2017-01-01 2017-12-31 0000059478 us-gaap:TreasuryStockMember 2016-01-01 2016-12-31 0000059478 us-gaap:TreasuryStockMember 2018-01-01 2018-12-31 0000059478 us-gaap:CommonStockMember 2018-12-31 0000059478 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2016-01-01 2016-12-31 0000059478 us-gaap:CommonStockMember 2017-12-31 0000059478 us-gaap:CommonStockMember 2016-01-01 2016-12-31 0000059478 us-gaap:TreasuryStockMember 2017-01-01 2017-12-31 0000059478 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2018-01-01 2018-12-31 0000059478 us-gaap:NoncontrollingInterestMember 2018-01-01 2018-12-31 0000059478 us-gaap:NoncontrollingInterestMember 2017-01-01 2017-12-31 0000059478 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2018-01-01 0000059478 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2018-12-31 0000059478 us-gaap:AdditionalPaidInCapitalMember 2016-01-01 2016-12-31 0000059478 us-gaap:CommonStockMember 2018-01-01 2018-12-31 0000059478 us-gaap:RetainedEarningsMember 2018-01-01 2018-12-31 0000059478 us-gaap:RetainedEarningsMember 2017-01-01 2017-12-31 0000059478 us-gaap:TreasuryStockMember 2017-12-31 0000059478 us-gaap:AdditionalPaidInCapitalMember 2018-12-31 0000059478 us-gaap:NoncontrollingInterestMember 2018-12-31 0000059478 us-gaap:CommonStockMember 2015-12-31 0000059478 us-gaap:RetainedEarningsMember 2018-01-01 0000059478 us-gaap:RetainedEarningsMember 2016-12-31 0000059478 us-gaap:AdditionalPaidInCapitalMember 2017-12-31 0000059478 us-gaap:RetainedEarningsMember 2017-12-31 0000059478 us-gaap:AdditionalPaidInCapitalMember 2018-01-01 2018-12-31 0000059478 us-gaap:AdditionalPaidInCapitalMember 2017-01-01 2017-12-31 0000059478 us-gaap:TreasuryStockMember 2018-12-31 0000059478 us-gaap:CommonStockMember 2016-12-31 0000059478 us-gaap:TreasuryStockMember 2015-12-31 0000059478 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2015-12-31 0000059478 us-gaap:AdditionalPaidInCapitalMember 2016-12-31 0000059478 us-gaap:TrustForBenefitOfEmployeesMember 2015-12-31 0000059478 us-gaap:NoncontrollingInterestMember 2017-12-31 0000059478 us-gaap:RetainedEarningsMember 2015-12-31 0000059478 us-gaap:NoncontrollingInterestMember 2016-12-31 0000059478 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2017-01-01 2017-12-31 0000059478 us-gaap:TrustForBenefitOfEmployeesMember 2017-12-31 0000059478 us-gaap:NoncontrollingInterestMember 2016-01-01 2016-12-31 0000059478 us-gaap:AdditionalPaidInCapitalMember 2015-12-31 0000059478 us-gaap:TrustForBenefitOfEmployeesMember 2016-12-31 0000059478 us-gaap:TreasuryStockMember 2016-12-31 0000059478 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2017-12-31 0000059478 us-gaap:TrustForBenefitOfEmployeesMember 2018-12-31 0000059478 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2017-01-01 0000059478 us-gaap:RetainedEarningsMember 2017-01-01 0000059478 us-gaap:NoncontrollingInterestMember 2015-12-31 0000059478 us-gaap:RetainedEarningsMember 2018-12-31 0000059478 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2016-12-31 0000059478 2016-12-31 0000059478 2015-12-31 0000059478 lly:ElancoAnimalHealthIncorporatedMember us-gaap:IPOMember 2018-09-24 0000059478 us-gaap:RoyaltyMember 2017-01-01 2017-12-31 0000059478 lly:ElancoAnimalHealthIncorporatedMember us-gaap:IPOMember 2018-09-24 2018-09-24 0000059478 lly:ElancoAnimalHealthIncorporatedMember 2018-09-24 2018-09-24 0000059478 us-gaap:RoyaltyMember 2018-01-01 2018-12-31 0000059478 us-gaap:RoyaltyMember 2016-01-01 2016-12-31 0000059478 us-gaap:DiscontinuedOperationsDisposedOfBySaleMember lly:ElancoAnimalHealthIncorporatedMember 2019-03-11 0000059478 lly:CollaborationandOtherRevenueMember 2017-01-01 2017-12-31 0000059478 lly:CollaborationandOtherRevenueMember 2016-01-01 2016-12-31 0000059478 us-gaap:ProductMember 2016-01-01 2016-12-31 0000059478 us-gaap:ProductMember 2017-01-01 2017-12-31 0000059478 us-gaap:ProductMember 2018-01-01 2018-12-31 0000059478 lly:CollaborationandOtherRevenueMember 2018-01-01 2018-12-31 0000059478 us-gaap:AccountingStandardsUpdate201802Member 2017-12-31 0000059478 us-gaap:AccountingStandardsUpdate201616Member 2018-01-01 0000059478 us-gaap:AccountingStandardsUpdate201707Member 2016-01-01 2016-12-31 0000059478 us-gaap:AccountingStandardsUpdate201601Member 2018-01-01 0000059478 us-gaap:AccountingStandardsUpdate201602Member 2019-01-01 0000059478 us-gaap:AccountingStandardsUpdate201409Member us-gaap:DifferenceBetweenRevenueGuidanceInEffectBeforeAndAfterTopic606Member 2018-01-01 0000059478 us-gaap:AccountingStandardsUpdate201707Member 2017-01-01 2017-12-31 0000059478 lly:LoxoOncologyInc.Member 2019-02-15 2019-02-15 0000059478 lly:ACImmuneSAMember 2019-01-01 2019-01-31 0000059478 lly:LoxoOncologyInc.Member 2019-02-15 0000059478 lly:CoLucidPharmaceuticalsMember 2017-03-01 2017-03-31 0000059478 lly:SIGATechnologiesMember 2018-10-01 2018-10-31 0000059478 lly:ARMOBiosciencesInc.Member 2018-06-01 2018-06-30 0000059478 lly:NektarsPhaseIImmunologicalTherapyMember 2017-08-01 2017-08-31 0000059478 lly:CureVacAGMember 2017-11-01 2017-11-30 0000059478 lly:KeyBiosciencesDualAmylinCalcitoninReceptorAgonistsMember 2017-07-01 2017-07-31 0000059478 lly:SigilonTherapeuticsMember 2018-04-01 2018-04-30 0000059478 lly:AstraZenecaMember 2016-12-01 2016-12-31 0000059478 lly:AurkaPharmaMember 2018-06-01 2018-06-30 0000059478 lly:NextCureInc.Member 2018-11-01 2018-11-30 0000059478 lly:DicernaPharmaceuticalsMember 2018-12-01 2018-12-31 0000059478 lly:AnimaBiotechMember 2018-07-01 2018-07-31 0000059478 lly:ChugaiPharmaceuticalCompanyMember 2018-10-01 2018-10-31 0000059478 lly:HydraBiosciencesMember 2018-12-01 2018-12-31 0000059478 lly:EffientMember lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:EffientMember lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:EffientMember lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:ErbituxCollaborationandOtherRevenueMember 2017-01-01 2017-12-31 0000059478 lly:ErbituxMember 2016-01-01 2016-12-31 0000059478 lly:ErbituxMember 2017-01-01 2017-12-31 0000059478 lly:ErbituxCollaborationandOtherRevenueMember 2018-01-01 2018-12-31 0000059478 lly:ErbituxCollaborationandOtherRevenueMember 2016-01-01 2016-12-31 0000059478 lly:ErbituxProductMember 2016-01-01 2016-12-31 0000059478 lly:ErbituxProductMember 2018-01-01 2018-12-31 0000059478 lly:ErbituxProductMember 2017-01-01 2017-12-31 0000059478 lly:OlumiantMember lly:MilestonePaymentsDevelopmentAndRegulatoryMember 2018-01-01 2018-12-31 0000059478 lly:TanezumabMember lly:MilestonePaymentsSalesBasedMember 2018-01-01 2018-12-31 0000059478 lly:ErbituxMember lly:AcquisitionTermsContingentConsiderationMember 2015-10-01 2015-10-01 0000059478 lly:EffientMember lly:ProfitAndDevelopmentAndMarketingShareMember 2018-01-01 2018-12-31 0000059478 lly:OlumiantMember lly:MilestonePaymentsSalesBasedMember 2018-01-01 2018-12-31 0000059478 lly:OlumiantMember lly:ResearchAndDevelopmentExpMember 2009-12-01 2009-12-31 0000059478 lly:OlumiantMember us-gaap:RoyaltyAgreementTermsMember 2009-12-01 2009-12-31 0000059478 lly:TanezumabMember lly:MilestonePaymentsDevelopmentAndRegulatoryMember 2018-01-01 2018-12-31 0000059478 lly:JardianceMember 2018-01-01 2018-12-31 0000059478 lly:BasaglarMember 2018-01-01 2018-12-31 0000059478 lly:TrajentaBIMember 2017-01-01 2017-12-31 0000059478 lly:JardianceMember 2017-01-01 2017-12-31 0000059478 lly:TrajentaBIMember 2016-01-01 2016-12-31 0000059478 lly:TrajentaBIMember 2018-01-01 2018-12-31 0000059478 lly:BasaglarMember 2016-01-01 2016-12-31 0000059478 lly:JardianceMember 2016-01-01 2016-12-31 0000059478 lly:BasaglarMember 2017-01-01 2017-12-31 0000059478 lly:OlumiantMember lly:MilestonePaymentsDevelopmentandRegulatoryExpensedMember 2018-01-01 2018-12-31 0000059478 lly:OlumiantMember country:US lly:MilestonePaymentsDevelopmentandRegulatoryCapitalizedDeferredMember 2018-01-01 2018-12-31 0000059478 lly:OlumiantMember country:JP lly:MilestonePaymentsDevelopmentandRegulatoryCapitalizedDeferredMember 2017-01-01 2017-12-31 0000059478 lly:OlumiantMember lly:MilestonePaymentsDevelopmentandRegulatoryExpensedMember 2017-01-01 2017-12-31 0000059478 lly:OlumiantMember srt:EuropeMember lly:MilestonePaymentsDevelopmentandRegulatoryCapitalizedDeferredMember 2017-01-01 2017-12-31 0000059478 lly:OlumiantMember lly:UnitedStatesandEuropeMember lly:MilestonePaymentsDevelopmentandRegulatoryExpensedMember 2016-01-01 2016-12-31 0000059478 lly:BasaglarMember lly:MilestonePaymentsDevelopmentandRegulatoryCapitalizedCumulativeMember 2016-01-01 2018-12-31 0000059478 lly:BasaglarMember lly:MilestonePaymentsDevelopmentandRegulatoryCapitalizedMember 2018-01-01 2018-12-31 0000059478 lly:TrajentaBIMember lly:MilestonePaymentsDevelopmentandRegulatoryCapitalizedCumulativeMember 2018-01-01 2018-12-31 0000059478 lly:BasaglarMember lly:MilestonePaymentsDevelopmentandRegulatoryCapitalizedMember 2017-01-01 2017-12-31 0000059478 lly:BasaglarMember lly:MilestonePaymentsDevelopmentandRegulatoryCapitalizedMember 2016-01-01 2016-12-31 0000059478 lly:JardianceMember lly:MilestonePaymentsDevelopmentandRegulatoryCapitalizedCumulativeMember 2018-01-01 2018-12-31 0000059478 country:PR 2017-01-01 2017-12-31 0000059478 lly:OutsideUnitedStatesMember 2017-01-01 2017-12-31 0000059478 country:US 2017-01-01 2017-12-31 0000059478 us-gaap:InterestRateSwapMember us-gaap:CashFlowHedgingMember 2016-01-01 2016-12-31 0000059478 us-gaap:ForeignExchangeContractMember us-gaap:NetInvestmentHedgingMember 2016-01-01 2016-12-31 0000059478 us-gaap:ForeignExchangeContractMember us-gaap:NetInvestmentHedgingMember 2017-01-01 2017-12-31 0000059478 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:NetInvestmentHedgingMember 2016-01-01 2016-12-31 0000059478 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:NetInvestmentHedgingMember 2018-01-01 2018-12-31 0000059478 us-gaap:NetInvestmentHedgingMember 2017-01-01 2017-12-31 0000059478 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:NetInvestmentHedgingMember 2017-01-01 2017-12-31 0000059478 us-gaap:InterestRateSwapMember us-gaap:CashFlowHedgingMember 2017-01-01 2017-12-31 0000059478 us-gaap:ForeignExchangeContractMember us-gaap:NetInvestmentHedgingMember 2018-01-01 2018-12-31 0000059478 us-gaap:NetInvestmentHedgingMember 2018-01-01 2018-12-31 0000059478 us-gaap:InterestRateSwapMember us-gaap:CashFlowHedgingMember 2018-01-01 2018-12-31 0000059478 us-gaap:NetInvestmentHedgingMember 2016-01-01 2016-12-31 0000059478 lly:HedgedFixedRateDebtMember us-gaap:DesignatedAsHedgingInstrumentMember 2018-01-01 2018-12-31 0000059478 us-gaap:InterestRateContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2018-01-01 2018-12-31 0000059478 us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember 2018-01-01 2018-12-31 0000059478 us-gaap:InterestRateContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2017-01-01 2017-12-31 0000059478 us-gaap:InterestRateContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2016-01-01 2016-12-31 0000059478 lly:HedgedFixedRateDebtMember us-gaap:DesignatedAsHedgingInstrumentMember 2016-01-01 2016-12-31 0000059478 us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember 2016-01-01 2016-12-31 0000059478 lly:HedgedFixedRateDebtMember us-gaap:DesignatedAsHedgingInstrumentMember 2017-01-01 2017-12-31 0000059478 us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember 2017-01-01 2017-12-31 0000059478 us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:DesignatedAsHedgingInstrumentMember 2017-12-31 0000059478 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:FairValueInputsLevel2Member us-gaap:DesignatedAsHedgingInstrumentMember 2018-12-31 0000059478 us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:DesignatedAsHedgingInstrumentMember 2018-12-31 0000059478 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:CarryingReportedAmountFairValueDisclosureMember us-gaap:DesignatedAsHedgingInstrumentMember 2018-12-31 0000059478 us-gaap:CarryingReportedAmountFairValueDisclosureMember 2017-12-31 0000059478 us-gaap:InterestRateContractMember us-gaap:CarryingReportedAmountFairValueDisclosureMember us-gaap:DesignatedAsHedgingInstrumentMember 2018-12-31 0000059478 us-gaap:InterestRateContractMember us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:DesignatedAsHedgingInstrumentMember 2017-12-31 0000059478 us-gaap:InterestRateContractMember us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:DesignatedAsHedgingInstrumentMember 2018-12-31 0000059478 us-gaap:ForeignExchangeContractMember us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:NondesignatedMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2017-12-31 0000059478 us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:DesignatedAsHedgingInstrumentMember 2018-12-31 0000059478 us-gaap:ForeignExchangeContractMember us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:NondesignatedMember 2018-12-31 0000059478 us-gaap:ForeignExchangeContractMember us-gaap:CarryingReportedAmountFairValueDisclosureMember us-gaap:NondesignatedMember 2017-12-31 0000059478 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:DesignatedAsHedgingInstrumentMember 2017-12-31 0000059478 us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:DesignatedAsHedgingInstrumentMember 2017-12-31 0000059478 us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel3Member us-gaap:DesignatedAsHedgingInstrumentMember 2017-12-31 0000059478 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:DesignatedAsHedgingInstrumentMember 2017-12-31 0000059478 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:CarryingReportedAmountFairValueDisclosureMember us-gaap:DesignatedAsHedgingInstrumentMember 2017-12-31 0000059478 us-gaap:InterestRateContractMember us-gaap:CarryingReportedAmountFairValueDisclosureMember us-gaap:DesignatedAsHedgingInstrumentMember 2017-12-31 0000059478 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:FairValueInputsLevel1Member us-gaap:DesignatedAsHedgingInstrumentMember 2018-12-31 0000059478 us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:DesignatedAsHedgingInstrumentMember 2017-12-31 0000059478 us-gaap:ForeignExchangeContractMember us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:NondesignatedMember 2017-12-31 0000059478 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:DesignatedAsHedgingInstrumentMember 2018-12-31 0000059478 us-gaap:ForeignExchangeContractMember us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:NondesignatedMember 2018-12-31 0000059478 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:DesignatedAsHedgingInstrumentMember 2017-12-31 0000059478 us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:DesignatedAsHedgingInstrumentMember 2018-12-31 0000059478 us-gaap:ForeignExchangeContractMember us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:NondesignatedMember 2017-12-31 0000059478 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:FairValueInputsLevel3Member us-gaap:DesignatedAsHedgingInstrumentMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2017-12-31 0000059478 us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel1Member us-gaap:DesignatedAsHedgingInstrumentMember 2017-12-31 0000059478 us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel2Member us-gaap:DesignatedAsHedgingInstrumentMember 2017-12-31 0000059478 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:DesignatedAsHedgingInstrumentMember 2018-12-31 0000059478 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:DesignatedAsHedgingInstrumentMember 2018-12-31 0000059478 us-gaap:ForeignExchangeContractMember us-gaap:CarryingReportedAmountFairValueDisclosureMember us-gaap:NondesignatedMember 2018-12-31 0000059478 us-gaap:ForeignExchangeContractMember us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:NondesignatedMember 2018-12-31 0000059478 us-gaap:ForeignExchangeContractMember us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:NondesignatedMember 2017-12-31 0000059478 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:DesignatedAsHedgingInstrumentMember 2018-12-31 0000059478 us-gaap:ForeignExchangeContractMember us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:NondesignatedMember 2017-12-31 0000059478 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:DesignatedAsHedgingInstrumentMember 2017-12-31 0000059478 us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2017-12-31 0000059478 us-gaap:EstimateOfFairValueFairValueDisclosureMember 2017-12-31 0000059478 lly:BuyEuroSellUsDollarMember 2018-12-31 0000059478 us-gaap:CurrencySwapMember 2018-12-31 0000059478 lly:BuyGBPSellUSDMember 2018-12-31 0000059478 us-gaap:InterestRateSwapMember 2018-12-31 0000059478 lly:BuySwissfrancsSellUSdollarMember 2018-12-31 0000059478 lly:BuyUsdSellEuroMember 2018-12-31 0000059478 lly:ForeignCurrencyDenominatedDebtMember 2017-12-31 0000059478 lly:SwapSwissFrancsToU.S.DollarsMember 2018-12-31 0000059478 lly:BuyUSdollarSellBritishpoundMember 2018-12-31 0000059478 lly:ForeignCurrencyDenominatedDebtMember 2018-12-31 0000059478 lly:BuyUSdollarSellJapaneseYenMember 2018-12-31 0000059478 us-gaap:CarryingReportedAmountFairValueDisclosureMember lly:MarketableSecuritiesMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:USGovernmentAgenciesDebtSecuritiesMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:AssetBackedSecuritiesMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:AssetBackedSecuritiesMember 2018-12-31 0000059478 us-gaap:CarryingReportedAmountFairValueDisclosureMember us-gaap:OtherDebtSecuritiesMember 2017-12-31 0000059478 us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMember us-gaap:USGovernmentAgenciesDebtSecuritiesMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:CorporateDebtSecuritiesMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:MortgageBackedSecuritiesMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:OtherDebtSecuritiesMember 2017-12-31 0000059478 us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMember us-gaap:CorporateDebtSecuritiesMember 2018-12-31 0000059478 us-gaap:EstimateOfFairValueFairValueDisclosureMember lly:OtherEquitySecuritiesMember 2018-12-31 0000059478 us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMember us-gaap:USGovernmentAgenciesDebtSecuritiesMember 2017-12-31 0000059478 us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:USGovernmentAgenciesDebtSecuritiesMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:CorporateDebtSecuritiesMember 2017-12-31 0000059478 us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:MortgageBackedSecuritiesMember 2017-12-31 0000059478 us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:AssetBackedSecuritiesMember 2018-12-31 0000059478 us-gaap:CarryingReportedAmountFairValueDisclosureMember us-gaap:USGovernmentAgenciesDebtSecuritiesMember 2017-12-31 0000059478 us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:CorporateDebtSecuritiesMember 2017-12-31 0000059478 us-gaap:CarryingReportedAmountFairValueDisclosureMember us-gaap:USGovernmentAgenciesDebtSecuritiesMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:OtherDebtSecuritiesMember 2017-12-31 0000059478 us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:USGovernmentAgenciesDebtSecuritiesMember 2017-12-31 0000059478 us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMember us-gaap:AssetBackedSecuritiesMember 2017-12-31 0000059478 us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:CorporateDebtSecuritiesMember 2017-12-31 0000059478 us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:USGovernmentAgenciesDebtSecuritiesMember 2017-12-31 0000059478 us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:EquitySecuritiesMember 2017-12-31 0000059478 us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMember us-gaap:MortgageBackedSecuritiesMember 2017-12-31 0000059478 us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:EquitySecuritiesMember 2017-12-31 0000059478 us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:USGovernmentAgenciesDebtSecuritiesMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:USGovernmentAgenciesDebtSecuritiesMember 2017-12-31 0000059478 us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMember us-gaap:EquitySecuritiesMember 2017-12-31 0000059478 us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:CorporateDebtSecuritiesMember 2017-12-31 0000059478 us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:CorporateDebtSecuritiesMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:AssetBackedSecuritiesMember 2017-12-31 0000059478 us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:MortgageBackedSecuritiesMember 2018-12-31 0000059478 us-gaap:CarryingReportedAmountFairValueDisclosureMember us-gaap:MortgageBackedSecuritiesMember 2018-12-31 0000059478 us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:OtherDebtSecuritiesMember 2017-12-31 0000059478 us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:USGovernmentAgenciesDebtSecuritiesMember 2017-12-31 0000059478 us-gaap:EstimateOfFairValueFairValueDisclosureMember lly:MarketableSecuritiesMember 2018-12-31 0000059478 us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMember us-gaap:AssetBackedSecuritiesMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:AssetBackedSecuritiesMember 2017-12-31 0000059478 us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:EquitySecuritiesMember 2017-12-31 0000059478 us-gaap:CarryingReportedAmountFairValueDisclosureMember us-gaap:CorporateDebtSecuritiesMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:USGovernmentAgenciesDebtSecuritiesMember 2018-12-31 0000059478 us-gaap:CarryingReportedAmountFairValueDisclosureMember us-gaap:AssetBackedSecuritiesMember 2017-12-31 0000059478 us-gaap:CarryingReportedAmountFairValueDisclosureMember 2018-12-31 0000059478 us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMember us-gaap:MortgageBackedSecuritiesMember 2018-12-31 0000059478 us-gaap:CarryingReportedAmountFairValueDisclosureMember lly:EquityMethodAndOtherInvestmentsMember 2018-12-31 0000059478 us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMember 2017-12-31 0000059478 us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:AssetBackedSecuritiesMember 2018-12-31 0000059478 us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:MortgageBackedSecuritiesMember 2018-12-31 0000059478 us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMember us-gaap:CorporateDebtSecuritiesMember 2017-12-31 0000059478 us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember lly:OtherEquitySecuritiesMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:CorporateDebtSecuritiesMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:MortgageBackedSecuritiesMember 2017-12-31 0000059478 us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMember us-gaap:OtherDebtSecuritiesMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:CorporateDebtSecuritiesMember 2018-12-31 0000059478 us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMember us-gaap:OtherDebtSecuritiesMember 2017-12-31 0000059478 us-gaap:CarryingReportedAmountFairValueDisclosureMember lly:EquityMethodAndOtherInvestmentsMember 2017-12-31 0000059478 us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000059478 us-gaap:CarryingReportedAmountFairValueDisclosureMember us-gaap:AssetBackedSecuritiesMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:MortgageBackedSecuritiesMember 2017-12-31 0000059478 us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMember lly:OtherEquitySecuritiesMember 2018-12-31 0000059478 us-gaap:CarryingReportedAmountFairValueDisclosureMember lly:OtherEquitySecuritiesMember 2018-12-31 0000059478 us-gaap:CarryingReportedAmountFairValueDisclosureMember us-gaap:CorporateDebtSecuritiesMember 2017-12-31 0000059478 us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:EquitySecuritiesMember 2017-12-31 0000059478 us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:MortgageBackedSecuritiesMember 2018-12-31 0000059478 us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMember lly:MarketableSecuritiesMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:OtherDebtSecuritiesMember 2018-12-31 0000059478 us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember lly:MarketableSecuritiesMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:AssetBackedSecuritiesMember 2017-12-31 0000059478 us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:OtherDebtSecuritiesMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:OtherDebtSecuritiesMember 2017-12-31 0000059478 us-gaap:CarryingReportedAmountFairValueDisclosureMember us-gaap:EquitySecuritiesMember 2017-12-31 0000059478 us-gaap:CarryingReportedAmountFairValueDisclosureMember us-gaap:OtherDebtSecuritiesMember 2018-12-31 0000059478 us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:AssetBackedSecuritiesMember 2017-12-31 0000059478 us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember lly:MarketableSecuritiesMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember lly:OtherEquitySecuritiesMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember lly:OtherEquitySecuritiesMember 2018-12-31 0000059478 us-gaap:CarryingReportedAmountFairValueDisclosureMember us-gaap:MortgageBackedSecuritiesMember 2017-12-31 0000059478 us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000059478 us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:MortgageBackedSecuritiesMember 2017-12-31 0000059478 us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:OtherDebtSecuritiesMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember lly:MarketableSecuritiesMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:OtherDebtSecuritiesMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:CommercialPaperMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:CommercialPaperMember 2017-12-31 0000059478 us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:CommercialPaperMember 2018-12-31 0000059478 us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:CommercialPaperMember 2017-12-31 0000059478 us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:CommercialPaperMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:CommercialPaperMember 2017-12-31 0000059478 us-gaap:CarryingReportedAmountFairValueDisclosureMember us-gaap:CommercialPaperMember 2017-12-31 0000059478 us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:CommercialPaperMember 2017-12-31 0000059478 us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:CommercialPaperMember 2018-12-31 0000059478 us-gaap:CarryingReportedAmountFairValueDisclosureMember us-gaap:CommercialPaperMember 2018-12-31 0000059478 srt:MaximumMember 2018-01-01 2018-12-31 0000059478 us-gaap:OtherIntangibleAssetsMember 2018-12-31 0000059478 us-gaap:DevelopedTechnologyRightsMember 2018-12-31 0000059478 us-gaap:DevelopedTechnologyRightsMember 2017-12-31 0000059478 us-gaap:OtherIntangibleAssetsMember 2017-12-31 0000059478 srt:MinimumMember 2018-01-01 2018-12-31 0000059478 lly:AnimalHealthProductsMember 2017-01-01 2017-12-31 0000059478 lly:AnimalHealthProductsMember 2018-01-01 2018-12-31 0000059478 srt:MaximumMember us-gaap:BuildingMember 2018-01-01 2018-12-31 0000059478 srt:MinimumMember us-gaap:BuildingMember 2018-01-01 2018-12-31 0000059478 srt:MaximumMember us-gaap:EquipmentMember 2018-01-01 2018-12-31 0000059478 srt:MinimumMember us-gaap:EquipmentMember 2018-01-01 2018-12-31 0000059478 lly:MaturityDate2019Member 2018-12-31 0000059478 lly:NotesDueinTwentyFortySevenMember 2017-05-31 0000059478 lly:NotesDueinMayTwentyTwentyTwoMember 2017-05-31 0000059478 lly:NotesDueinMayTwentyTwentySevenMember 2017-05-31 0000059478 2017-05-01 2017-05-31 0000059478 lly:MaturityDate2019Member 2018-01-01 2018-12-31 0000059478 lly:MaturityDate2023Member 2018-12-31 0000059478 srt:MaximumMember 2018-12-31 0000059478 srt:MinimumMember 2018-12-31 0000059478 lly:ShareholderValueAwardsMember 2018-01-01 2018-12-31 0000059478 lly:ShareholderValueAwardsMember 2017-01-01 2017-12-31 0000059478 lly:ShareholderValueAwardsMember 2016-01-01 2016-12-31 0000059478 us-gaap:PerformanceSharesMember 2018-01-01 2018-12-31 0000059478 us-gaap:PerformanceSharesMember 2018-12-31 0000059478 us-gaap:RestrictedStockUnitsRSUMember 2017-01-01 2017-12-31 0000059478 us-gaap:PerformanceSharesMember 2017-01-01 2017-12-31 0000059478 us-gaap:RestrictedStockUnitsRSUMember 2018-01-01 2018-12-31 0000059478 lly:ShareholderValueAwardsMember 2018-12-31 0000059478 us-gaap:RestrictedStockUnitsRSUMember 2016-01-01 2016-12-31 0000059478 us-gaap:RestrictedStockUnitsRSUMember 2018-12-31 0000059478 us-gaap:PerformanceSharesMember 2016-01-01 2016-12-31 0000059478 lly:A2013ShareRepurchaseProgramMember 2013-10-31 0000059478 lly:A2018RepurchaseProgramMember 2018-12-31 0000059478 lly:A2013ShareRepurchaseProgramMember 2018-01-01 2018-12-31 0000059478 lly:A2018RepurchaseProgramMember 2018-01-01 2018-12-31 0000059478 us-gaap:StateAndLocalJurisdictionMember lly:DesignatedUnusableMember 2018-12-31 0000059478 lly:Expirationwithin5yearsMember 2018-12-31 0000059478 lly:Expiration5to20YearsMember 2018-12-31 0000059478 2014-01-01 2014-12-31 0000059478 2012-01-01 2012-12-31 0000059478 2015-01-01 2015-12-31 0000059478 2010-01-01 2010-12-31 0000059478 us-gaap:ForeignCountryMember lly:DesignatedUnusableMember 2018-12-31 0000059478 lly:NoExpirationMember 2018-12-31 0000059478 lly:CarryforwardMember 2018-12-31 0000059478 srt:MaximumMember 2016-12-31 0000059478 lly:TaxYears20102012Member 2015-01-01 2015-12-31 0000059478 lly:Expirationin9YearsMember 2018-12-31 0000059478 2013-01-01 2013-12-31 0000059478 us-gaap:InternalRevenueServiceIRSMember lly:DesignatedUnusableMember 2018-12-31 0000059478 lly:TaxYears20102012Member 2016-01-01 2016-12-31 0000059478 us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 lly:FixedIncomeFundsEmergingMarketsMember us-gaap:FairValueInputsLevel1Member us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 us-gaap:HedgeFundsMember us-gaap:FairValueInputsLevel2Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:EquityFundsMember us-gaap:FairValueInputsLevel2Member us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 lly:FixedIncomeFundsEmergingMarketsMember us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 us-gaap:FixedIncomeFundsMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesUsMember us-gaap:FairValueInputsLevel1Member us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 lly:FixedIncomeFundsEmergingMarketsMember us-gaap:FairValueInputsLevel3Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:DefinedBenefitPlanRealEstateMember us-gaap:FairValueInputsLevel1Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 lly:FixedIncomeFundsEmergingMarketsMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 lly:FixedIncomeFundsEmergingMarketsMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 us-gaap:HedgeFundsMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:OtherContractMember us-gaap:FairValueInputsLevel2Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:DefinedBenefitPlanRealEstateMember us-gaap:FairValueInputsLevel1Member us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesUsMember us-gaap:FairValueInputsLevel2Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:DefinedBenefitPlanRealEstateMember us-gaap:FairValueInputsLevel2Member us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 lly:FixedIncomeFundsRepurchasedAgreementsMember us-gaap:FairValueInputsLevel2Member us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 us-gaap:HedgeFundsMember us-gaap:FairValueInputsLevel1Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember lly:FixedIncomeFundsEmergingMarketsMember us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 us-gaap:FairValueInputsLevel1Member us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 lly:FixedIncomeFundsRepurchasedAgreementsMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember us-gaap:DefinedBenefitPlanEquitySecuritiesUsMember us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 us-gaap:FairValueInputsLevel3Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember us-gaap:FairValueInputsLevel1Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember us-gaap:FixedIncomeFundsMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember lly:FixedIncomeFundsRepurchasedAgreementsMember us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember lly:FixedIncomeFundsEmergingMarketsMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember us-gaap:FairValueInputsLevel2Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember us-gaap:FairValueInputsLevel1Member us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 us-gaap:EquityFundsMember us-gaap:FairValueInputsLevel1Member us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember us-gaap:FixedIncomeFundsMember us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 lly:FixedIncomeFundsRepurchasedAgreementsMember us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember us-gaap:HedgeFundsMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:FairValueInputsLevel2Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:DefinedBenefitPlanRealEstateMember us-gaap:FairValueInputsLevel2Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:FixedIncomeFundsMember us-gaap:FairValueInputsLevel2Member us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 us-gaap:OtherContractMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember us-gaap:OtherContractMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 lly:DefineBenefitPlanOtherMember us-gaap:FairValueInputsLevel3Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 us-gaap:HedgeFundsMember us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesUsMember us-gaap:FairValueInputsLevel2Member us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember us-gaap:DefinedBenefitPlanEquitySecuritiesUsMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:DefinedBenefitPlanRealEstateMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember us-gaap:EquityFundsMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember lly:DefineBenefitPlanOtherMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:DefinedBenefitPlanRealEstateMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 lly:FixedIncomeFundsEmergingMarketsMember us-gaap:FairValueInputsLevel2Member us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 us-gaap:FairValueInputsLevel2Member us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 us-gaap:HedgeFundsMember us-gaap:FairValueInputsLevel3Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:DefinedBenefitPlanRealEstateMember us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 us-gaap:FixedIncomeFundsMember us-gaap:FairValueInputsLevel2Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesUsMember us-gaap:FairValueInputsLevel3Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesUsMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember lly:DefineBenefitPlanOtherMember us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 us-gaap:EquityFundsMember us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 lly:DefineBenefitPlanOtherMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 lly:DefineBenefitPlanOtherMember us-gaap:FairValueInputsLevel1Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:EquityFundsMember us-gaap:FairValueInputsLevel3Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:HedgeFundsMember us-gaap:FairValueInputsLevel2Member us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 us-gaap:EquityFundsMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesUsMember us-gaap:FairValueInputsLevel1Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:EquityFundsMember us-gaap:FairValueInputsLevel1Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 lly:FixedIncomeFundsRepurchasedAgreementsMember us-gaap:FairValueInputsLevel1Member us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 us-gaap:HedgeFundsMember us-gaap:FairValueInputsLevel1Member us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 lly:DefineBenefitPlanOtherMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 lly:DefineBenefitPlanOtherMember us-gaap:FairValueInputsLevel1Member us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember us-gaap:DefinedBenefitPlanRealEstateMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesUsMember us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 us-gaap:EquityFundsMember us-gaap:FairValueInputsLevel2Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:HedgeFundsMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 us-gaap:FixedIncomeFundsMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:FixedIncomeFundsMember us-gaap:FairValueInputsLevel1Member us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 us-gaap:OtherContractMember us-gaap:FairValueInputsLevel3Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:FairValueInputsLevel1Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 lly:FixedIncomeFundsEmergingMarketsMember us-gaap:FairValueInputsLevel2Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember us-gaap:FairValueInputsLevel2Member us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember us-gaap:HedgeFundsMember us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 lly:DefineBenefitPlanOtherMember us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 lly:DefineBenefitPlanOtherMember us-gaap:FairValueInputsLevel2Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 us-gaap:EquityFundsMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 lly:DefineBenefitPlanOtherMember us-gaap:FairValueInputsLevel2Member us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 us-gaap:FixedIncomeFundsMember us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 us-gaap:OtherContractMember us-gaap:FairValueInputsLevel1Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 lly:FixedIncomeFundsEmergingMarketsMember us-gaap:FairValueInputsLevel1Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember us-gaap:EquityFundsMember us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember us-gaap:FairValueInputsLevel3Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 us-gaap:FixedIncomeFundsMember us-gaap:FairValueInputsLevel1Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember us-gaap:DefinedBenefitPlanRealEstateMember us-gaap:PensionPlansDefinedBenefitMember 2017-12-31 0000059478 us-gaap:DefinedBenefitPlanRealEstateMember us-gaap:FairValueInputsLevel3Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:FixedIncomeFundsMember us-gaap:FairValueInputsLevel3Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesUsMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-12-31 0000059478 us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2017-01-01 2017-12-31 0000059478 us-gaap:PensionPlansDefinedBenefitMember 2017-01-01 2017-12-31 0000059478 us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-01-01 2018-12-31 0000059478 us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2016-12-31 0000059478 us-gaap:PensionPlansDefinedBenefitMember 2016-12-31 0000059478 us-gaap:PensionPlansDefinedBenefitMember 2018-01-01 2018-12-31 0000059478 us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2016-01-01 2016-12-31 0000059478 us-gaap:PensionPlansDefinedBenefitMember 2016-01-01 2016-12-31 0000059478 us-gaap:EquityFundsMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 us-gaap:DefinedBenefitPlanRealEstateMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 lly:FixedIncomeFundsEmergingMarketsMember us-gaap:FairValueInputsLevel3Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 lly:FixedIncomeFundsRepurchasedAgreementsMember us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:HedgeFundsMember us-gaap:FairValueInputsLevel1Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember us-gaap:EquityFundsMember us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember lly:FixedIncomeFundsEmergingMarketsMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember lly:DefineBenefitPlanOtherMember us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:DefinedBenefitPlanRealEstateMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:EquityFundsMember us-gaap:FairValueInputsLevel2Member us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember us-gaap:HedgeFundsMember us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember us-gaap:EquityFundsMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 lly:FixedIncomeFundsEmergingMarketsMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 lly:DefineBenefitPlanOtherMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 lly:DefineBenefitPlanOtherMember us-gaap:FairValueInputsLevel2Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 us-gaap:HedgeFundsMember us-gaap:FairValueInputsLevel2Member us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:FixedIncomeFundsMember us-gaap:FairValueInputsLevel2Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 us-gaap:FixedIncomeFundsMember us-gaap:FairValueInputsLevel3Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember us-gaap:FairValueInputsLevel2Member us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember lly:FixedIncomeFundsRepurchasedAgreementsMember us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 lly:DefineBenefitPlanOtherMember us-gaap:FairValueInputsLevel2Member us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:EquityFundsMember us-gaap:FairValueInputsLevel3Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 lly:FixedIncomeFundsEmergingMarketsMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:DefinedBenefitPlanRealEstateMember us-gaap:FairValueInputsLevel2Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember lly:DefineBenefitPlanOtherMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember us-gaap:HedgeFundsMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel2Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember lly:FixedIncomeFundsEmergingMarketsMember us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:FixedIncomeFundsMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 lly:FixedIncomeFundsEmergingMarketsMember us-gaap:FairValueInputsLevel2Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 lly:DefineBenefitPlanOtherMember us-gaap:FairValueInputsLevel1Member us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 lly:FixedIncomeFundsEmergingMarketsMember us-gaap:FairValueInputsLevel1Member us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesUsMember us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 lly:FixedIncomeFundsEmergingMarketsMember us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesUsMember us-gaap:FairValueInputsLevel1Member us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesUsMember us-gaap:FairValueInputsLevel1Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember us-gaap:FairValueInputsLevel3Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesUsMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 us-gaap:FixedIncomeFundsMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 us-gaap:OtherContractMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesUsMember us-gaap:FairValueInputsLevel2Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 us-gaap:EquityFundsMember us-gaap:FairValueInputsLevel1Member us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:FixedIncomeFundsMember us-gaap:FairValueInputsLevel1Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesUsMember us-gaap:FairValueInputsLevel2Member us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember us-gaap:DefinedBenefitPlanEquitySecuritiesUsMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 lly:FixedIncomeFundsRepurchasedAgreementsMember us-gaap:FairValueInputsLevel1Member us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember us-gaap:DefinedBenefitPlanEquitySecuritiesUsMember us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember us-gaap:FairValueInputsLevel2Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 lly:DefineBenefitPlanOtherMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember us-gaap:OtherContractMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 lly:FixedIncomeFundsEmergingMarketsMember us-gaap:FairValueInputsLevel2Member us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:HedgeFundsMember us-gaap:FairValueInputsLevel1Member us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:HedgeFundsMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:FixedIncomeFundsMember us-gaap:FairValueInputsLevel1Member us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember us-gaap:DefinedBenefitPlanRealEstateMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 lly:FixedIncomeFundsRepurchasedAgreementsMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel2Member us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:OtherContractMember us-gaap:FairValueInputsLevel1Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 us-gaap:DefinedBenefitPlanRealEstateMember us-gaap:FairValueInputsLevel2Member us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:HedgeFundsMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 us-gaap:DefinedBenefitPlanRealEstateMember us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 us-gaap:HedgeFundsMember us-gaap:FairValueInputsLevel3Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel1Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesUsMember us-gaap:FairValueInputsLevel3Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 us-gaap:DefinedBenefitPlanRealEstateMember us-gaap:FairValueInputsLevel1Member us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:EquityFundsMember us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 lly:DefineBenefitPlanOtherMember us-gaap:FairValueInputsLevel1Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember us-gaap:DefinedBenefitPlanRealEstateMember us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel1Member us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:FixedIncomeFundsMember us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 lly:FixedIncomeFundsRepurchasedAgreementsMember us-gaap:FairValueInputsLevel2Member us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:OtherContractMember us-gaap:FairValueInputsLevel3Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 us-gaap:FixedIncomeFundsMember us-gaap:FairValueInputsLevel2Member us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesUsMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:EquityFundsMember us-gaap:FairValueInputsLevel2Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember us-gaap:FixedIncomeFundsMember us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 lly:FixedIncomeFundsEmergingMarketsMember us-gaap:FairValueInputsLevel1Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember us-gaap:FixedIncomeFundsMember us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:OtherContractMember us-gaap:FairValueInputsLevel2Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 us-gaap:HedgeFundsMember us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 lly:DefineBenefitPlanOtherMember us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 lly:DefineBenefitPlanOtherMember us-gaap:FairValueInputsLevel3Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 us-gaap:EquityFundsMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:DefinedBenefitPlanRealEstateMember us-gaap:FairValueInputsLevel3Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 lly:FairValueRetirementBenefitsInvestmentsValuedatNetAssetValueMember us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:HedgeFundsMember us-gaap:FairValueInputsLevel2Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 us-gaap:FairValueInputsLevel3Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember us-gaap:FairValueInputsLevel1Member us-gaap:PensionPlansDefinedBenefitMember 2018-12-31 0000059478 us-gaap:DefinedBenefitPlanRealEstateMember us-gaap:FairValueInputsLevel1Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember us-gaap:FairValueInputsLevel1Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 us-gaap:EquityFundsMember us-gaap:FairValueInputsLevel1Member us-gaap:DefinedBenefitPostretirementHealthCoverageMember 2018-12-31 0000059478 2018-07-01 2018-07-31 0000059478 lly:RestructuringSettlementAndImpairmentProvisionsMember 2017-01-01 2017-12-31 0000059478 us-gaap:DefinedBenefitPlanEquitySecuritiesMember 2018-12-31 0000059478 us-gaap:FixedIncomeFundsMember 2018-12-31 0000059478 lly:EmployeeLitigationMember country:BR 2018-01-01 2018-12-31 0000059478 lly:EmployeeLitigationMember country:BR lly:PlaintiffAppealingDecisionofCourtMember 2018-01-01 2018-12-31 0000059478 lly:AdociaS.AMember 2018-12-31 0000059478 2018-07-31 0000059478 lly:AlimtaMember country:US 2018-12-31 0000059478 lly:DrReddysLabMember 2018-06-01 2018-06-30 0000059478 lly:JapaneseAdministrativeProceedingsMember 2018-12-31 0000059478 lly:AlimtaMember country:US 2018-01-01 2018-12-31 0000059478 us-gaap:AociAttributableToNoncontrollingInterestMember 2018-12-31 0000059478 us-gaap:AociAttributableToNoncontrollingInterestMember 2016-12-31 0000059478 us-gaap:AociAttributableToNoncontrollingInterestMember 2017-12-31 0000059478 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember 2016-01-01 2016-12-31 0000059478 us-gaap:AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterestMember 2018-01-01 2018-12-31 0000059478 us-gaap:AccumulatedNetGainLossFromCashFlowHedgesIncludingPortionAttributableToNoncontrollingInterestMember 2018-01-01 2018-12-31 0000059478 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember 2016-01-01 2016-12-31 0000059478 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember 2018-01-01 2018-12-31 0000059478 us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember 2016-01-01 2016-12-31 0000059478 us-gaap:AccumulatedNetGainLossFromCashFlowHedgesIncludingPortionAttributableToNoncontrollingInterestMember 2017-01-01 2017-12-31 0000059478 us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember 2017-01-01 2017-12-31 0000059478 us-gaap:AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterestMember 2017-01-01 2017-12-31 0000059478 us-gaap:AccumulatedNetGainLossFromCashFlowHedgesIncludingPortionAttributableToNoncontrollingInterestMember 2016-01-01 2016-12-31 0000059478 us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember 2018-01-01 2018-12-31 0000059478 us-gaap:AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterestMember 2016-01-01 2016-12-31 0000059478 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember 2017-01-01 2017-12-31 0000059478 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterestMember 2016-01-01 2016-12-31 0000059478 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterestMember 2018-01-01 2018-12-31 0000059478 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember 2018-01-01 2018-12-31 0000059478 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceIncludingPortionAttributableToNoncontrollingInterestMember 2018-01-01 2018-12-31 0000059478 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AccumulatedOtherthanTemporaryImpairmentIncludingPortionAttributableToNoncontrollingInterestMember 2017-01-01 2017-12-31 0000059478 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember 2016-01-01 2016-12-31 0000059478 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember 2017-01-01 2017-12-31 0000059478 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetGainLossIncludingPortionAttributableToNoncontrollingInterestMember 2016-01-01 2016-12-31 0000059478 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AccumulatedOtherthanTemporaryImpairmentIncludingPortionAttributableToNoncontrollingInterestMember 2016-01-01 2016-12-31 0000059478 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterestMember 2017-01-01 2017-12-31 0000059478 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetGainLossIncludingPortionAttributableToNoncontrollingInterestMember 2018-01-01 2018-12-31 0000059478 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2016-01-01 2016-12-31 0000059478 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember lly:AccumulatedNetGainLossfromCashFlowHedgesandForeignCurrencyAdjustmentIncludingPortionAttributabletoNoncontrollingInterestMember 2018-01-01 2018-12-31 0000059478 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember lly:AccumulatedNetGainLossfromCashFlowHedgesandForeignCurrencyAdjustmentIncludingPortionAttributabletoNoncontrollingInterestMember 2017-01-01 2017-12-31 0000059478 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceIncludingPortionAttributableToNoncontrollingInterestMember 2017-01-01 2017-12-31 0000059478 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember lly:AccumulatedNetGainLossfromCashFlowHedgesandForeignCurrencyAdjustmentIncludingPortionAttributabletoNoncontrollingInterestMember 2016-01-01 2016-12-31 0000059478 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2018-01-01 2018-12-31 0000059478 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetGainLossIncludingPortionAttributableToNoncontrollingInterestMember 2017-01-01 2017-12-31 0000059478 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2017-01-01 2017-12-31 0000059478 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceIncludingPortionAttributableToNoncontrollingInterestMember 2016-01-01 2016-12-31 0000059478 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AccumulatedOtherthanTemporaryImpairmentIncludingPortionAttributableToNoncontrollingInterestMember 2018-01-01 2018-12-31 0000059478 us-gaap:AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentContinuingOperationsMember 2016-01-01 2016-12-31 0000059478 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentContinuingOperationsMember 2015-12-31 0000059478 us-gaap:AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentContinuingOperationsMember 2017-01-01 2017-12-31 0000059478 us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentContinuingOperationsMember 2016-01-01 2016-12-31 0000059478 us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentContinuingOperationsMember 2017-01-01 2017-12-31 0000059478 us-gaap:AccumulatedNetGainLossFromCashFlowHedgesIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentContinuingOperationsMember 2018-01-01 2018-12-31 0000059478 us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentContinuingOperationsMember 2018-12-31 0000059478 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentContinuingOperationsMember 2018-12-31 0000059478 us-gaap:AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentContinuingOperationsMember 2018-01-01 2018-12-31 0000059478 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentContinuingOperationsMember 2017-01-01 2017-12-31 0000059478 us-gaap:AccumulatedNetGainLossFromCashFlowHedgesIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentContinuingOperationsMember 2017-01-01 2017-12-31 0000059478 us-gaap:AccumulatedNetGainLossFromCashFlowHedgesIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentContinuingOperationsMember 2018-12-31 0000059478 us-gaap:AociIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentDiscontinuedOperationsMember 2016-01-01 2016-12-31 0000059478 us-gaap:AccumulatedNetGainLossFromCashFlowHedgesIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentContinuingOperationsMember 2016-01-01 2016-12-31 0000059478 us-gaap:AccumulatedNetGainLossFromCashFlowHedgesIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentContinuingOperationsMember 2016-12-31 0000059478 us-gaap:AccumulatedNetGainLossFromCashFlowHedgesIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentContinuingOperationsMember 2017-12-31 0000059478 us-gaap:AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentContinuingOperationsMember 2017-12-31 0000059478 us-gaap:AociIncludingPortionAttributableToNoncontrollingInterestMember 2018-12-31 0000059478 us-gaap:AociIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentDiscontinuedOperationsMember 2017-01-01 2017-12-31 0000059478 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentContinuingOperationsMember 2018-01-01 2018-12-31 0000059478 us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentContinuingOperationsMember 2015-12-31 0000059478 us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentContinuingOperationsMember 2017-12-31 0000059478 us-gaap:AociIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentDiscontinuedOperationsMember 2015-12-31 0000059478 us-gaap:AccumulatedNetGainLossFromCashFlowHedgesIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentContinuingOperationsMember 2015-12-31 0000059478 us-gaap:AociIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentDiscontinuedOperationsMember 2018-01-01 2018-12-31 0000059478 us-gaap:AociIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentDiscontinuedOperationsMember 2018-12-31 0000059478 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentContinuingOperationsMember 2016-01-01 2016-12-31 0000059478 us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentContinuingOperationsMember 2018-01-01 2018-12-31 0000059478 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentContinuingOperationsMember 2016-12-31 0000059478 us-gaap:AociIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentDiscontinuedOperationsMember 2017-12-31 0000059478 us-gaap:AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentContinuingOperationsMember 2016-12-31 0000059478 us-gaap:AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentContinuingOperationsMember 2015-12-31 0000059478 us-gaap:AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentContinuingOperationsMember 2018-12-31 0000059478 us-gaap:AociIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentDiscontinuedOperationsMember 2016-12-31 0000059478 us-gaap:AociIncludingPortionAttributableToNoncontrollingInterestMember 2016-12-31 0000059478 us-gaap:AociIncludingPortionAttributableToNoncontrollingInterestMember 2017-12-31 0000059478 us-gaap:AociIncludingPortionAttributableToNoncontrollingInterestMember 2015-12-31 0000059478 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentContinuingOperationsMember 2017-12-31 0000059478 us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember us-gaap:SegmentContinuingOperationsMember 2016-12-31 0000059478 lly:AlimtaMember country:US lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:OtherNeuroscienceMember country:US lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:EffientMember country:US lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:ForteoMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:StratteraMember country:US lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:OtherEndocrinologyMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:ErbituxMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:OtherPharmaceuticalsMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:OtherCardiovascularMember country:US lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:OtherOncologyMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:OtherCardiovascularMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:NeuroscienceMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:HumalogMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:OncologyMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:ImmunologyMember country:US lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:TrulicityMemberMember country:US lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:OtherImmunologyMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:ErbituxMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:OtherCardiovascularMember country:US lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:AlimtaMember country:US lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:ErbituxMember country:US lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:OncologyMember country:US lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:TrajentaBIMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:AlimtaMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:StratteraMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:OtherOncologyMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:TrajentaBIMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:OncologyMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:OtherNeuroscienceMember country:US lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:EndocrinologyMember country:US lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:OtherPharmaceuticalsMember country:US lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:ImmunologyMember country:US lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:CyramzaMember country:US lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:CymbaltaMember country:US lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:EndocrinologyMember country:US lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:OtherImmunologyMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:ForteoMember country:US lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:OtherEndocrinologyMember country:US lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:HumulinMember country:US lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:TaltzMember country:US lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:TaltzMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:ForteoMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:CyramzaMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:AlimtaMember country:US lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:OtherEndocrinologyMember country:US lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:TrulicityMemberMember country:US lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:NeuroscienceMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:CyramzaMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:EndocrinologyMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:OtherEndocrinologyMember country:US lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:CyramzaMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:OtherCardiovascularMember country:US lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 country:US 2018-01-01 2018-12-31 0000059478 lly:HumalogMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:NeuroscienceMember country:US lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:CymbaltaMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:HumulinMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:CialisMember country:US lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:ZyprexaMember country:US lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:CialisMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:ImmunologyMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:HumalogMember country:US lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:BasaglarMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:OtherNeuroscienceMember country:US lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:CialisMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:StratteraMember country:US lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:JardianceMember country:US lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:CialisMember country:US lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:CymbaltaMember country:US lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:OtherNeuroscienceMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:AlimtaMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:InternationalMember 2018-01-01 2018-12-31 0000059478 lly:NeuroscienceMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:OtherNeuroscienceMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:AlimtaMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:ForteoMember country:US lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:OtherEndocrinologyMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:JardianceMember country:US lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:HumulinMember country:US lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:OtherImmunologyMember country:US lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:OtherPharmaceuticalsMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:NeuroscienceMember country:US lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:TaltzMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:CardiovascularMember country:US lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:EffientMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:OtherOncologyMember country:US lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:HumalogMember country:US lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:JardianceMember country:US lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:EndocrinologyMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:ForteoMember country:US lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:ZyprexaMember country:US lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:OtherImmunologyMember country:US lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:BasaglarMember country:US lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:OtherImmunologyMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:BasaglarMember country:US lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:OtherPharmaceuticalsMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:OncologyMember country:US lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:EndocrinologyMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:TrajentaBIMember country:US lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:CialisMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:CardiovascularMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:ImmunologyMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:OtherOncologyMember country:US lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:HumalogMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 country:US 2016-01-01 2016-12-31 0000059478 lly:InternationalMember 2017-01-01 2017-12-31 0000059478 lly:ZyprexaMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:JardianceMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:ErbituxMember country:US lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:TrulicityMemberMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:CardiovascularMember country:US lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:ImmunologyMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:JardianceMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:TrajentaBIMember country:US lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:CyramzaMember country:US lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:OtherPharmaceuticalsMember country:US lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:CyramzaMember country:US lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:ZyprexaMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:BasaglarMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:OtherOncologyMember country:US lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:CymbaltaMember country:US lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:EffientMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:StratteraMember country:US lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:TaltzMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:CardiovascularMember country:US lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:ErbituxMember country:US lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:NeuroscienceMember country:US lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:EffientMember country:US lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:CialisMember country:US lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:BasaglarMember country:US lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:TrulicityMemberMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:HumalogMember country:US lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:OncologyMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:TrulicityMemberMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:OtherPharmaceuticalsMember country:US lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:TaltzMember country:US lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:CardiovascularMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:HumulinMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:CardiovascularMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:TrulicityMemberMember country:US lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:EndocrinologyMember country:US lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:OtherImmunologyMember country:US lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:BasaglarMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:OtherCardiovascularMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:OtherCardiovascularMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:StratteraMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:EffientMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:ZyprexaMember country:US lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:OncologyMember country:US lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:TrajentaBIMember country:US lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:JardianceMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2017-01-01 2017-12-31 0000059478 lly:ImmunologyMember country:US lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:HumulinMember country:US lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:InternationalMember 2016-01-01 2016-12-31 0000059478 lly:StratteraMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:CymbaltaMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:TrajentaBIMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:OtherNeuroscienceMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:CymbaltaMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:OtherEndocrinologyMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:ZyprexaMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:TaltzMember country:US lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:ErbituxMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:ForteoMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:HumulinMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2018-01-01 2018-12-31 0000059478 lly:OtherOncologyMember lly:InternationalMember lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 lly:EffientMember country:US lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 srt:EuropeMember 2017-01-01 2017-12-31 0000059478 lly:OtherForeignCountriesMember 2016-12-31 0000059478 lly:OtherForeignCountriesMember 2017-01-01 2017-12-31 0000059478 country:JP 2016-01-01 2016-12-31 0000059478 country:US 2018-12-31 0000059478 country:JP 2017-12-31 0000059478 srt:EuropeMember 2018-01-01 2018-12-31 0000059478 lly:OtherForeignCountriesMember 2017-12-31 0000059478 srt:EuropeMember 2017-12-31 0000059478 country:US 2016-12-31 0000059478 country:JP 2018-01-01 2018-12-31 0000059478 srt:EuropeMember 2018-12-31 0000059478 country:JP 2016-12-31 0000059478 country:JP 2017-01-01 2017-12-31 0000059478 lly:OtherForeignCountriesMember 2016-01-01 2016-12-31 0000059478 lly:OtherForeignCountriesMember 2018-01-01 2018-12-31 0000059478 srt:EuropeMember 2016-01-01 2016-12-31 0000059478 lly:OtherForeignCountriesMember 2018-12-31 0000059478 country:JP 2018-12-31 0000059478 country:US 2017-12-31 0000059478 srt:EuropeMember 2016-12-31 0000059478 srt:MaximumMember us-gaap:SalesRevenueNetMember 2018-01-01 2018-12-31 0000059478 srt:MaximumMember us-gaap:AccountsReceivableMember 2018-01-01 2018-12-31 0000059478 lly:CymbaltaMember lly:AdjustmenttoReturnReserveMember lly:HumanPharmaceuticalProductsMember 2016-01-01 2016-12-31 0000059478 srt:MinimumMember us-gaap:AccountsReceivableMember 2018-01-01 2018-12-31 0000059478 srt:MinimumMember us-gaap:SalesRevenueNetMember 2018-01-01 2018-12-31 0000059478 srt:MinimumMember us-gaap:SalesRevenueNetMember 2017-01-01 2017-12-31 0000059478 srt:MaximumMember us-gaap:SalesRevenueNetMember 2016-01-01 2016-12-31 0000059478 srt:MaximumMember us-gaap:SalesRevenueNetMember 2017-01-01 2017-12-31 0000059478 srt:MinimumMember us-gaap:AccountsReceivableMember 2017-01-01 2017-12-31 0000059478 srt:MinimumMember us-gaap:SalesRevenueNetMember 2016-01-01 2016-12-31 0000059478 srt:MaximumMember us-gaap:AccountsReceivableMember 2017-01-01 2017-12-31 0000059478 2018-07-01 2018-09-30 0000059478 2017-01-01 2017-03-31 0000059478 2018-01-01 2018-03-31 0000059478 2017-04-01 2017-06-30 0000059478 2017-10-01 2017-12-31 0000059478 2018-10-01 2018-12-31 0000059478 2017-07-01 2017-09-30 0000059478 2018-04-01 2018-06-30 0000059478 lly:ElancoAnimalHealthIncorporatedMember lly:TermFacilityMember 2018-08-31 0000059478 lly:ElancoAnimalHealthIncorporatedMember 2018-12-31 0000059478 lly:ElancoAnimalHealthIncorporatedMember 2018-09-24 0000059478 us-gaap:DiscontinuedOperationsDisposedOfBySaleMember lly:ElancoAnimalHealthIncorporatedMember 2019-03-11 2019-03-11 0000059478 us-gaap:DiscontinuedOperationsDisposedOfBySaleMember lly:ElancoAnimalHealthIncorporatedMember 2019-01-01 2019-03-31 0000059478 us-gaap:DiscontinuedOperationsDisposedOfBySaleMember lly:ElancoAnimalHealthIncorporatedMember 2018-12-31 0000059478 us-gaap:DiscontinuedOperationsDisposedOfBySaleMember lly:ElancoAnimalHealthIncorporatedMember 2017-12-31 0000059478 us-gaap:DiscontinuedOperationsDisposedOfBySaleMember lly:ElancoAnimalHealthIncorporatedMember 2018-01-01 2018-12-31 0000059478 us-gaap:DiscontinuedOperationsDisposedOfBySaleMember lly:ElancoAnimalHealthIncorporatedMember 2017-01-01 2017-12-31 0000059478 us-gaap:DiscontinuedOperationsDisposedOfBySaleMember lly:ElancoAnimalHealthIncorporatedMember 2016-01-01 2016-12-31 0000059478 lly:ElancoAnimalHealthIncorporatedMember lly:TermFacilityMember 2018-08-01 2018-08-31 iso4217:EUR iso4217:CHF iso4217:GBP iso4217:USD xbrli:pure xbrli:shares iso4217:JPY iso4217:USD xbrli:shares lly:individual lly:wholesaler iso4217:BRL lly:case lly:application lly:company lly:patent lly:lawsuit lly:demand lly:segment lly:defendant lly:product


UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
________________

FORM 8-K

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

Date of Report (Date of earliest event reported): October 24, 2019

ELI LILLY AND COMPANY
(Exact name of registrant as specified in its charter)
Indiana
 
001-06351
 
35-0470950
(State or Other Jurisdiction
of Incorporation)
 
(Commission
File Number)
 
(I.R.S. Employer
Identification No.)

Lilly Corporate Center
Indianapolis, Indiana 46285
(Address of Principal Executive Offices, and Zip Code)

(317) 276-2000
Registrant’s Telephone Number, Including Area Code

Not Applicable
                Former Name or Former Address, if Changed Since Last Report

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).
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. ☐

Securities registered pursuant to Section 12(b) of the Exchange Act:
Title of Each Class
Trading Symbol
Name of Each Exchange On Which Registered
Common Stock (no par value)
LLY
New York Stock Exchange
1.000% Notes Due June 2, 2022
LLY22
New York Stock Exchange
7 1/8% Notes Due June 1, 2025
LLY25
New York Stock Exchange
1.625% Notes Due June 2, 2026
LLY26
New York Stock Exchange
2.125% Notes Due June 3, 2030
LLY30
New York Stock Exchange
6.77% Notes Due January 1, 2036
LLY36
New York Stock Exchange




Item 8.01 Other Events
On March 11, 2019, we completed the disposition of our remaining 80.2 percent ownership of Elanco Animal Health (Elanco) common stock through a tax-free exchange offer. As a result, beginning in our Quarterly Report on Form 10-Q for the first quarter of 2019, we presented Elanco as discontinued operations in our consolidated condensed financial statements for all periods presented. We are issuing this Current Report on Form 8-K to recast Elanco as discontinued operations as of and for each of the periods covered by our 2018 Annual Report on Form 10-K (Form 10-K).
Exhibit 99.1 of this current report on Form 8-K, which is incorporated herein by reference, presents a recast of the following sections of our Form 10-K to present Elanco as discontinued operations: Item 6. Selected Financial Data, Item 7. Management's Discussion and Analysis of Results of Operations and Financial Condition, Item 7A. Quantitative and Qualitative Disclosures About Market Risk, and Item 8. Financial Statements and Supplementary Data. Except as specifically set forth herein, no revisions have been made to the Company's Form 10-K to update for other information, developments, or events that have occurred since our Form 10-K was filed on February 19, 2019.
This Current Report on Form 8-K should be read in conjunction with our Form 10-K and subsequent filings with the Securities and Exchange Commission (SEC), including our Quarterly Reports on Form 10-Q and our Current Reports on Form 8-K. These subsequent SEC filings contain important information regarding events, developments, and updates affecting us and our expectations that have occurred since the filing of the Form 10-K.
We are also providing the following update regarding Trulicity. Revenue of Trulicity, a treatment for type 2 diabetes, increased 17 percent and 24 percent in the United States (U.S.) during the three and nine months ended September 30, 2019, respectively, primarily driven by increased demand, partially offset by lower realized prices resulting from the following negative price dynamics: higher contracted rebates, changes in segment mix, and increased coverage gap funding requirements in Medicare Part D. We expect these negative price dynamics to moderate by the end of 2019 and into 2020. Revenue outside the U.S. increased 50 percent and 45 percent during the three and nine months ended September 30, 2019, respectively, primarily driven by increased volume.
This Current Report on Form 8-K contains management’s current intentions and expectations for the future, which are forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Actual results may differ materially due to various factors, including due to competitive developments affecting current products and the impact of actions of governmental and private payers affecting the pricing of, reimbursement for, and access to pharmaceuticals. For additional information, refer to our latest Form 10-K and 10-Q and any 8-Ks filed with the SEC. You should not place undue reliance on forward-looking statements, which speak only as of the date of this report. Except as is required by law, we expressly disclaim any obligation to publicly release any revisions to forward-looking statements to reflect events after the date of this report.
Item 9.01. Financial Statements and Exhibits
(d) Exhibits. The following Exhibits are filed as part of this Report on Form 8-K:

Exhibit Number
 
Description of Exhibit

 

 
101

 
Interactive Data Files (embedded within the Inline XBRL document)
104

 
Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.
ELI LILLY AND COMPANY
(Registrant)




By:    /s/ Donald A. Zakrowski
Name:    Donald A. Zakrowski
Title:     Vice President, Finance and
Chief Accounting Officer

Dated: October 24, 2019