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Income Taxes (Composition and Deferreds) (Details) (USD $)
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12 Months Ended | ||
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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| Unremitted Earnings of Foreign Subsidiaries | $ 25,700,000,000us-gaap_UndistributedEarningsOfForeignSubsidiaries | ||
| Current Federal Tax Expense (Benefit) | 168,900,000us-gaap_CurrentFederalTaxExpenseBenefit | 259,100,000us-gaap_CurrentFederalTaxExpenseBenefit | 596,800,000us-gaap_CurrentFederalTaxExpenseBenefit |
| Current Foreign Tax Expense (Benefit) | 406,200,000us-gaap_CurrentForeignTaxExpenseBenefit | 553,200,000us-gaap_CurrentForeignTaxExpenseBenefit | 540,600,000us-gaap_CurrentForeignTaxExpenseBenefit |
| Current State and Local Tax Expense (Benefit) | (2,100,000)us-gaap_CurrentStateAndLocalTaxExpenseBenefit | 126,300,000us-gaap_CurrentStateAndLocalTaxExpenseBenefit | 56,200,000us-gaap_CurrentStateAndLocalTaxExpenseBenefit |
| Current Income Tax Expense (Benefit), Total | 573,000,000us-gaap_CurrentIncomeTaxExpenseBenefit | 938,600,000us-gaap_CurrentIncomeTaxExpenseBenefit | 1,193,600,000us-gaap_CurrentIncomeTaxExpenseBenefit |
| Deferred Federal Income Tax Expense (Benefit) | (83,300,000)us-gaap_DeferredFederalIncomeTaxExpenseBenefit | 297,000,000us-gaap_DeferredFederalIncomeTaxExpenseBenefit | 87,000,000us-gaap_DeferredFederalIncomeTaxExpenseBenefit |
| Deferred Foreign Income Tax Expense (Benefit) | 120,200,000us-gaap_DeferredForeignIncomeTaxExpenseBenefit | (28,200,000)us-gaap_DeferredForeignIncomeTaxExpenseBenefit | 29,900,000us-gaap_DeferredForeignIncomeTaxExpenseBenefit |
| Deferred State and Local Income Tax Expense (Benefit) | (100,000)us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit | (2,900,000)us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit | 9,100,000us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit |
| Deferred Income Tax Expense (Benefit), Total | 36,800,000us-gaap_DeferredIncomeTaxExpenseBenefit | 265,900,000us-gaap_DeferredIncomeTaxExpenseBenefit | 126,000,000us-gaap_DeferredIncomeTaxExpenseBenefit |
| Income taxes | 609,800,000us-gaap_IncomeTaxExpenseBenefit | 1,204,500,000us-gaap_IncomeTaxExpenseBenefit | 1,319,600,000us-gaap_IncomeTaxExpenseBenefit |
| Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits | 897,300,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits | 639,800,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits | |
| Tax Credit Carryforward, Deferred Tax Asset | 279,400,000us-gaap_TaxCreditCarryforwardDeferredTaxAsset | 494,600,000us-gaap_TaxCreditCarryforwardDeferredTaxAsset | |
| Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Reserves | 241,800,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves | 313,700,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves | |
| Deferred Tax Assets, Operating Loss Carryforwards | 265,500,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwards | 311,700,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwards | |
| Deferred Tax Assets, Goodwill and Intangible Assets | 473,300,000us-gaap_DeferredTaxAssetsGoodwillAndIntangibleAssets | 418,800,000us-gaap_DeferredTaxAssetsGoodwillAndIntangibleAssets | |
| Deferred Tax Assets, Inventory | 0us-gaap_DeferredTaxAssetsInventory | 104,500,000us-gaap_DeferredTaxAssetsInventory | |
| Deferred Tax Asset, Fair Value Adjustments | 176,000,000lly_DeferredTaxAssetFairValueAdjustments | 110,000,000lly_DeferredTaxAssetFairValueAdjustments | |
| Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Contingencies | 68,900,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsContingencies | 106,000,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsContingencies | |
| Deferred Tax Assets, Other | 633,300,000us-gaap_DeferredTaxAssetsOther | 595,000,000us-gaap_DeferredTaxAssetsOther | |
| Deferred Tax Assets, Gross, Total | 3,035,500,000us-gaap_DeferredTaxAssetsGross | 3,094,100,000us-gaap_DeferredTaxAssetsGross | |
| Deferred Tax Assets, Valuation Allowance | (601,100,000)us-gaap_DeferredTaxAssetsValuationAllowance | (647,100,000)us-gaap_DeferredTaxAssetsValuationAllowance | |
| Deferred Tax Assets, Net, Total | 2,434,400,000us-gaap_DeferredTaxAssetsNet | 2,447,000,000us-gaap_DeferredTaxAssetsNet | |
| Deferred Tax Liabilities, Undistributed Foreign Earnings | (737,100,000)us-gaap_DeferredTaxLiabilitiesUndistributedForeignEarnings | (898,300,000)us-gaap_DeferredTaxLiabilitiesUndistributedForeignEarnings | |
| Deferred Tax Liabilities, Goodwill and Intangible Assets | (582,600,000)us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssets | (598,900,000)us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssets | |
| Deferred Tax Liabilities, Prepaid Expenses | (275,800,000)us-gaap_DeferredTaxLiabilitiesPrepaidExpenses | (446,200,000)us-gaap_DeferredTaxLiabilitiesPrepaidExpenses | |
| Deferred Tax Liabilities, Deferred Expense, Capitalized Inventory Costs | (684,600,000)us-gaap_DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts | (685,600,000)us-gaap_DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts | |
| Deferred Tax Liabilities, Property, Plant and Equipment | (424,700,000)us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment | (379,100,000)us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment | |
| Deferred Tax Liabilities, Derivatives | 161,500,000us-gaap_DeferredTaxLiabilitiesDerivatives | 109,600,000us-gaap_DeferredTaxLiabilitiesDerivatives | |
| Deferred Tax Liabilities, Total | 2,866,300,000us-gaap_DeferredIncomeTaxLiabilities | 3,117,700,000us-gaap_DeferredIncomeTaxLiabilities | |
| Deferred Tax Assets (Liabilities), Net, Total | (431,900,000)us-gaap_DeferredTaxLiabilities | (670,700,000)us-gaap_DeferredTaxLiabilities | |
| Deferred Tax Assets, Operating Loss Carryforwards, State and Local | 97,000,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal | ||
| Deferred Tax Assets, Tax Credit Carryforwards, Other | 8,900,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsOther | ||
| Carryforward [Member] | |||
| Operating Loss Carryforwards | 493,900,000us-gaap_OperatingLossCarryforwards / us-gaap_TaxCreditCarryforwardAxis = lly_CarryforwardMember |
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| Tax Credit Carryforward, Amount | 459,900,000us-gaap_TaxCreditCarryforwardAmount / us-gaap_TaxCreditCarryforwardAxis = lly_CarryforwardMember |
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| Expiration 5 years [Member] | |||
| Operating Loss Carryforwards | 74,600,000us-gaap_OperatingLossCarryforwards / us-gaap_TaxCreditCarryforwardAxis = lly_Expirationwithin5yearsMember |
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| Expiration 5-20 years [Member] | |||
| Operating Loss Carryforwards | 366,100,000us-gaap_OperatingLossCarryforwards / us-gaap_TaxCreditCarryforwardAxis = lly_Expiration5to15YearsMember |
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| Expiration 5-20 years, Minimum [Member] | |||
| Operating Loss Carryforwards, Expiration Dates | Dec. 31, 2019 | ||
| Expiration 5-20 years, Maximum [Member] | |||
| Operating Loss Carryforwards, Expiration Dates | Dec. 31, 2029 | ||
| Expiration 10-20 years [Member] | |||
| Tax Credit Carryforward, Amount | 180,500,000us-gaap_TaxCreditCarryforwardAmount / us-gaap_TaxCreditCarryforwardAxis = lly_Expiration2015to2021Member |
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| Expiration 10-20 years, Maximum [Member] | |||
| Other Tax Carryforward, Expiration Dates | Dec. 31, 2021 | ||
| No Expiration [Member] | |||
| Operating Loss Carryforwards | 53,200,000us-gaap_OperatingLossCarryforwards / us-gaap_TaxCreditCarryforwardAxis = lly_NoExpirationMember |
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| Internal Revenue Service (IRS) [Member] | Designated Unusable [Member] | |||
| Tax Credit Carryforward, Amount | 80,300,000us-gaap_TaxCreditCarryforwardAmount / us-gaap_IncomeTaxAuthorityAxis = us-gaap_InternalRevenueServiceIRSMember / us-gaap_TaxCreditCarryforwardAxis = lly_DesignatedUnusableMember |
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| State and Local Jurisdiction [Member] | Designated Unusable [Member] | |||
| Tax Credit Carryforward, Amount | 94,700,000us-gaap_TaxCreditCarryforwardAmount / us-gaap_IncomeTaxAuthorityAxis = us-gaap_StateAndLocalJurisdictionMember / us-gaap_TaxCreditCarryforwardAxis = lly_DesignatedUnusableMember |
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| Foreign Tax Authority [Member] | Designated Unusable [Member] | |||
| Tax Credit Carryforward, Amount | $ 104,400,000us-gaap_TaxCreditCarryforwardAmount / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember / us-gaap_TaxCreditCarryforwardAxis = lly_DesignatedUnusableMember |
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- Definition
Deferred tax asset resulting from fair value adjustments, including on hedged borrowings No definition available.
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- Definition
Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of current foreign income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of deferred foreign income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from intangible assets including goodwill. No definition available.
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from inventory. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible state and local operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences not separately disclosed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to other deductible tax credit carryforwards not separately disclosed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from compensation and benefits costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from contingent liabilities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from other reserves not separately disclosed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences net of deferred tax asset attributable to deductible temporary differences and carryforwards after valuation allowances. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of deferred tax consequences attributable to taxable temporary differences derived from inventory. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences from derivatives. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences from intangible assets including goodwill. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of deferred tax consequences attributable to taxable temporary differences derived from prepaid expenses. No definition available.
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences from undistributed earnings of subsidiaries and other recognized entities not within the country of domicile of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Expiration date of each operating loss carryforward included in operating loss carryforward, in CCYY-MM-DD format. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of deferred tax asset, before valuation allowance, attributable to deductible other tax carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Expiration date of the tax credit carryforward, in CCYY-MM-DD format. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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