Entity tax identification number Entity Tax Identification Number Maximum Maximum [Member] Legal Entity [Axis] Legal Entity [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] EBP, Description of Plan [Table] EBP, Description of Plan [Table] EBP, Related Party and Party-in-Interest Transactions [Table] EBP, Related Party and Party-in-Interest Transactions [Table] Maximum compensation percentage EBP, Participant Contribution, Pretax, Maximum Annual Compensation to Total Compensation, Percentage Total Deductions EBP, Change in Net Asset Available for Benefit, Decrease Self-directed brokerage accounts EBP, Self-Directed Brokerage Account [Member] Maximum borrowing amount EBP, Note Receivable from Participant, Account, Maximum Borrowing, Amount Fair Value Measurements EBP, Investment, Fair Value and NAV [Text Block] Minimum borrowing amount EBP, Note Receivable from Participant, Account, Minimum Borrowing, Amount Basis spread on variable rate EBP, Participant Loan, Basis Spread On Variable Rate EBP, Participant Loan, Basis Spread On Variable Rate Level 1 Fair Value, Inputs, Level 1 [Member] EBP, Reconciliation of Financial Statement to Form 5500 EBP, Reconciliation of Financial Statement to Form 5500 [Table Text Block] EBP, Investment, Fair Value and NAV [Abstract] Assets EBP, Asset [Abstract] Statistical Measurement [Axis] Statistical Measurement [Axis] Additions: EBP, Change in Net Asset Available for Benefit, Increase [Abstract] EBP, Statement of Change in Net Asset Available for Benefit [Table] EBP, Statement of Change in Net Asset Available for Benefit [Table] Transfers from Other Plans EBP, Change in Net Asset Available for Benefit, Transfer to (from) Plan EBP, Master Trust [Line Items] EBP, Master Trust [Line Items] Amendment Flag Amendment Flag Participants EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution Distributions accrued on Form 5500 at year end EBP, Reconciliation to Form 5500, Net Asset Available for Benefit, Deemed Distribution Accrued expenses and pending trades - Purchases EBP, Accrued Expenses And Pending Trades, Purchases [Member] EBP, Accrued Expenses And Pending Trades, Purchases Basis of Accounting EBP, Basis of Accounting [Policy Text Block] EBP, Schedule of Asset Held for Investment [Table] EBP, Schedule of Asset Held for Investment [Table] Plan's total interest in The Lilly Employee Savings Plan Master Trust EBP, Investment, Plan Interest in Master Trust, Fair and Contract Value EBP, Description of Plan and Accounting Change [Abstract] Receivables: EBP, Receivable [Abstract] EBP, Investment, Fair Value and NAV EBP, Investment, Fair Value and NAV [Table Text Block] Service period EBP, Requisite Service Period EBP, Requisite Service Period Service period, hours EBP, Requisite Service Period, Hours EBP, Requisite Service Period, Hours Investments [Domain] Investments [Domain] EBP, Master Trust [Abstract] Synthetic GICs, at contract value Investments at contract value – Synthetic GICs EBP, Investment, Plan Interest in Master Trust, Contract Value Use of Estimates EBP, Use of Estimate [Policy Text Block] Schedule H, Line 4i – Schedule of Assets (Held At End of Year) EBP, Schedule of Asset Held for Investment [Text Block] Cover [Abstract] Risks and Uncertainties EBP, Risk and Uncertainty [Text Block] Hours of service EBP, Requisite Service Period, Part-Time Hours EBP, Requisite Service Period, Part-Time Hours Synthetic GICs, at contract value EBP, Synthetic Investment Contract [Member] Minimum Minimum [Member] Interest income on notes receivable from participants EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Note Receivable from Participant Investment Type [Axis] Investment Type [Axis] Total Contributions EBP, Change in Net Asset Available for Benefit, Increase from Contribution Net realized and unrealized gains on investments EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment EBP, Description of Plan [Line Items] EBP, Description of Plan [Line Items] Registered investment companies EBP, Registered Investment Companies [Member] EBP, Registered Investment Companies Plan number EBP, Plan Number Vesting percentage EBP, Employer Contribution Vesting Percentage EBP, Employer Contribution Vesting Percentage EBP, Investment, Fair Value and NAV [Line Items] EBP, Investment, Fair Value and NAV [Line Items] Description of the Plans EBP, Description of Plan [Text Block] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Table] EBP, Statement of Net Asset Available for Benefit [Table] Distributions accrued on Form 5500 at December 31, 2024 EBP, Reconciliation to Form 5500, Change in Net Asset Available for Benefit, Prior Period, Increase from Deemed Distribution EBP 002 EBP 002 [Member] EBP 002 Interest income, net of expenses EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Investment EBP, Schedule of Asset Held for Investment [Line Items] EBP, Schedule of Asset Held for Investment [Line Items] EBP, Nonconsolidated, Master Trust and Plan Interest in Master Trust [Domain] EBP, Nonconsolidated, Master Trust and Plan Interest in Master Trust [Domain] Minimum compensation, percentage EBP, Participant Contribution, Minimum Annual Compensation To Total Compensation, Percentage EBP, Participant Contribution, Minimum Annual Compensation To Total Compensation, Percentage Eli Lilly and Company common stock EBP, Employer, Common Stock [Member] EBP, Schedule of Asset Held for Investment [Abstract] EBP, Accounting Policy [Table] EBP, Accounting Policy [Table] Total Additions EBP, Change in Net Asset Available for Benefit, Increase Other common stock EBP, Other Common Stock [Member] EBP, Other Common Stock Administrative expenses EBP, Change in Net Asset Available for Benefit, Decrease from Administrative Expense Document Information [Line Items] Document Information [Line Items] EBP, Risk and Uncertainty [Line Items] EBP, Risk and Uncertainty [Line Items] EBP, Risk and Uncertainty [Table] EBP, Risk and Uncertainty [Table] Master Trust EBP, Master Trust [Text Block] Investments - Plan's interest in net assets of The Lilly Employee Savings Plan Master Trust: (Notes 3 and 4) EBP, Investment, Plan Interest in Master Trust, Fair and Contract Value [Abstract] Percentage of compensation matched EBP, Employer Contribution, Participant Compensation Matched, Percentage EBP, Statement of Change in Net Asset Available for Benefit [Abstract] Level 2 Fair Value, Inputs, Level 2 [Member] Distributions accrued on Form 5500 at December 31, 2025 EBP, Reconciliation to Form 5500, Change in Net Asset Available for Benefit, Current Period, Decrease from Deemed Distribution Accrued income and pending trades - Sales EBP, Accrued Income And Pending Trades, Sales [Member] EBP, Accrued Income And Pending Trades, Sales Net increase in net assets available for benefits, as reported on Form 5500 EBP, Form 5500 Caption, Net Income (Loss) Employer EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash and Noncash EBP, Tax Status [Table] EBP, Tax Status [Table] Net Increase Prior to Transfers EBP, Change in Net Asset Available for Benefit, Increase (Decrease) Transactions with Related Parties EBP, Related Party and Party-in-Interest Transactions [Text Block] EBP, Related Party and Party-in-Interest Transactions [Abstract] EBP, Accounting Policy, Accounting Standard Update, and Change in Accounting Principle [Abstract] Total Receivables EBP, Receivable Employer contribution EBP, Employer Contribution, Receivable Accrued income and pending trades - Sales EBP, Plan Interest In Master Trust, Accrued Income And Pending Trades EBP, Plan Interest In Master Trust, Accrued Income And Pending Trades Dividend income EBP, Change in Net Asset Available for Benefit, Increase from Dividend Income on Investment Participant withdrawals EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant Total Master Trust investments at fair value EBP, Investment, Plan Interest in Master Trust, Fair Value Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] EBP, Statement of Net Asset Available for Benefit [Abstract] Net Increase Net Increase Net EBP, Change in Net Asset Available for Benefit After Transfer, Increase (Decrease) Net EBP, Change in Net Asset Available for Benefit After Transfer, Increase (Decrease) EBP, Accounting Policy [Line Items] EBP, Accounting Policy [Line Items] EBP, Tax Status [Abstract] EBP, Reconciliation of Financial Statement to Form 5500 [Table] EBP, Reconciliation of Financial Statement to Form 5500 [Table] Interest in The Lilly Employee Savings Plan Master Trust investment income, net of administrative fees (Note 3) EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Change in Plan Interest in Master Trust Vesting hours EBP, Employer Contribution Vesting Hours EBP, Employer Contribution Vesting Hours EBP, Reconciliation of Financial Statement to Form 5500 [Line Items] EBP, Reconciliation of Financial Statement to Form 5500 [Line Items] Reconciliation of the Financial Statements to Form 5500 EBP, Reconciliation of Financial Statement to Form 5500 [Text Block] Loans to participants EBP, Asset Held for Investment, Participant Loan, after Deemed Distribution Investment Valuation and Income Recognition EBP, Investment [Policy Text Block] EBP, Master Trust [Table] EBP, Master Trust [Table] Fair Value, Inputs, Level 1, Level 2, and Level 3 Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] Document Type Document Type Entity Central Index Key Entity Central Index Key Interest rates EBP, Asset Held for Investment, Participant Loan, Interest Rate EBP, Reconciliation of Financial Statement to Form 5500 [Abstract] Interest in common/collective trusts Common Collective Trust [Member] EBP, Risk and Uncertainty [Abstract] EBP, Tax Status [Line Items] EBP, Tax Status [Line Items] Deductions: EBP, Change in Net Asset Available for Benefit, Decrease [Abstract] Notes receivable from participants EBP, Note Receivable from Participant EBP, Nonconsolidated, Master Trust EBP, Nonconsolidated, Master Trust [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Significant Accounting Policies EBP, Summary of Accounting Policy [Text Block] Entity Registrant Name Entity Registrant Name Master Trust EBP, Master Trust [Table Text Block] EBP 004 EBP 004 [Member] EBP 004 Income Tax Status EBP, Tax Status [Text Block] Maximum borrowing amount, percentage of total account EBP, Note Receivable from Participant, Account, Maximum Borrowing, to Total Account, Percentage Document Information [Table] Document Information [Table] Number of consecutive periods EBP, Number Of Consecutive Periods EBP, Number Of Consecutive Periods Notes Receivable from Participants EBP, Note Receivable from Participant [Policy Text Block] Accrued expenses and pending trades - Purchases EBP, Plan Interest In Master Trust, Accrued Expenses And Pending Trades EBP, Plan Interest In Master Trust, Accrued Expenses And Pending Trades Net investment income EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment EBP, Nonconsolidated, Master Trust and Plan Interest in Master Trust [Axis] EBP, Nonconsolidated, Master Trust and Plan Interest in Master Trust [Axis] EBP Plans EBP Plans [Member] EBP Plans EBP, Related Party and Party-in-Interest Transactions [Line Items] EBP, Related Party and Party-in-Interest Transactions [Line Items] Level 3 Fair Value, Inputs, Level 3 [Member] Net Assets Available for Benefits Net assets available for benefits at beginning of year Net assets available for benefits at end of year Net assets available for benefits at year end, as reported in the accompanying financial statements EBP, Net Asset Available for Benefit Entity [Domain] Entity [Domain] Contributions: EBP, Change in Net Asset Available for Benefit, Increase from Contribution [Abstract] Matching percentage EBP, Employer Contribution, Matching Percentage Net assets available for benefits per Form 5500 EBP, Form 5500 Caption, Net Assets Fair Value Measured at Net Asset Value Per Share Fair Value Measured at Net Asset Value Per Share [Member] EBP, Investment, Fair Value and NAV [Table] EBP, Investment, Fair Value and NAV [Table] EBP, Statement of Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Line Items]