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Financial Instruments (Realized Gains and Losses) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract] |  |  |
Proceeds from sales | $ 145.6 | $ 132.9 | $ 174.7
Realized gross gains on sales | 0.7 | 0.4 | 2.8
Realized gross losses on sales | $ 4.0 | $ 9.7 | $ 1.7

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- Definition Available for Sale Securities and Equity Securities, FV-NI, Realized Gain + References No definition available. + Details
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- Definition Available for sale Securities and Equity Securities, FV-NI, Realized Loss + References No definition available. + Details
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- Definition Proceeds from Sale of Equity and Available for Sale Securities + References No definition available. + Details
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Namespace Prefix: | lly_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- References No definition available. + Details
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