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Disclosures [Text Block] Net unrealized gains/losses on cash flow hedges Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest [Member] Foreign currency-denominated notes, designated as hedge Derivatives used in Net Investment Hedge, Net of Tax Name Trading Arrangement, Individual Name Net amount reclassified from accumulated other comprehensive loss Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Other securities Other Equity Securities [Member] Other Equity Securities [Member] Other comprehensive income, net of tax (Note 10) Other comprehensive income, net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Schedule of Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Receivables, Net, Current [Abstract] Receivables, Net, Current [Abstract] Equity [Abstract] Equity [Abstract] Inventories Inventory Disclosure [Text Block] Acquisition date fair value of consideration transferred Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net Other receivables Other Receivables, Net, Current Entity [Domain] Entity [Domain] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Amendment Flag Amendment Flag Legal Entity [Axis] Legal Entity [Axis] Fair Value Hedging Fair Value Hedging [Member] Recognized actuarial gain (loss) Defined Benefit Plan, Amortization of Gain (Loss) Collaboration and other revenue Collaboration and Other Revenue [Member] Collaboration and Other Revenue [Member] Change in deferred income taxes Increase (Decrease) in Deferred Income Taxes Cash and cash equivalents (Note 6) Cash and Cash Equivalents, at Carrying Value Cash paid, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Average remaining maturity of foreign currency derivatives Average Remaining Maturity of Foreign Currency Derivatives Less Than 1 Year Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Senior Notes Due 2026, 2033, 2053 And 2063 Senior Notes Due 2026, 2033, 2053 And 2063 [Member] Senior Notes Due 2026, 2033, 2053 And 2063 Purchase of treasury shares (in shares) Treasury Stock, Shares, Acquired 5.1% Notes Due 2064 5.1% Notes Due 2064 [Member] 5.1% Notes Due 2064 Business Combinations Business Combinations Policy [Policy Text Block] 1.375% Notes due 2061 1.375% Notes Due 2061 [Member] 1.375% Notes Due 2061 Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Long-term debt Long-Term Debt, Excluding Current Maturities Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Change in Accounting Estimate [Line Items] Change in Accounting Estimate [Line Items] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Interest Rate Contracts Interest Rate Contract [Member] Acquired in-process research and development (IPR&D) Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill Humulin® Humulin [Member] Humulin [Member] Schedule of Amounts Recorded for Contract Liabilities Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Humalog® Humalog [Member] Humalog [Member] Jardiance Jardiance [Member] Jardiance [Member] Revenue Revenue from Contract with Customer [Text Block] Company Selected Measure Amount Company Selected Measure Amount Additional paid-in capital Additional Paid in Capital, Common Stock Additional Paid-in Capital Additional Paid-in Capital [Member] Cash and cash equivalents at January 1 Cash and Cash Equivalents at March 31 Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations Total assets Assets Name Awards Close in Time to MNPI Disclosures, Individual Name Loss Contingencies [Line Items] Loss Contingencies [Line Items] Cover [Abstract] Cover [Abstract] Forteo® Forteo [Member] Forteo [Member] U.S. UNITED STATES Defined Benefit Pension and Retiree Health Benefit Plans Amortization of retirement benefit items Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member] Trajenta Trajenta (BI) [Member] Trajenta (BI) [Member] 5.0% Notes Due 2054 5.0% Notes Due 2054 [Member] 5.0% Notes Due 2054 Dividends paid Payments of Dividends Other noncurrent liabilities Other Liabilities, Noncurrent Non-NEOs Non-NEOs [Member] Roche Roche [Member] Roche [Member] Short-term investments (Note 6) Short-Term Investments Defined Benefit Pension Plans Pension Plan [Member] Cash Flow Hedging Cash Flow Hedging [Member] Net increase (decrease) in cash and cash equivalents Cash, Cash Equivalents, Restricted 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4.7% Notes Due 2033 Accumulated Other Comprehensive Loss AOCI Including Portion Attributable to Noncontrolling Interest [Member] 4.7% Notes Due 2034 4.7% Notes Due 2034 [Member] 4.7% Notes Due 2034 Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] Mounjaro® Mounjaro [Member] Mounjaro [Member] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Statement [Line Items] Statement [Line Items] Estimate of Fair Value Measurement Estimate of Fair Value Measurement [Member] Schedule of Derivative Instruments Schedule of Derivative Instruments [Table Text Block] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Mortgage-backed securities Collateralized Mortgage-Backed Securities [Member] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Fair value of securities in an unrealized gain position Debt Securities, Available-For-Sale, Unrealized Gain Position Debt Securities, Available-For-Sale, Unrealized Gain Position Eli Lilly and Company Shareholders' Equity Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Domain] Noncontrolling Interests Noncontrolling Interest [Member]