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Derivative instruments - Schedule of Income and Expense Line Items (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Derivative Instruments, Gain (Loss) [Line Items] |  |
Product sales | $ 8,149 | $ 7,447
Other income (expense), net | 1,518 | (235)
Interest expense, net | (723) | (824)
Cross-currency swap contracts | Reclassification out of AOCI | Cash flow hedges |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Other income (expense), net | 83 | (31)
Interest rate swap agreements |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gains (losses) on fair value hedging relationships, hedged items | (96) | 49
Derivatives designated as hedging instruments | 112 | (28)
Product sales |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Product sales | 7,873 | 7,118
Product sales | Foreign currency forward contracts | Reclassification out of AOCI | Cash flow hedges |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Product sales | $ 56 | $ 51

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- Definition Amount of gain (loss) from the increase (decrease) in fair value of derivative and nonderivative instruments designated as fair value hedging instruments recognized in the income statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 815 -SubTopic 25 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480238/815-25-50-1 + Details
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- Definition Amount of the increase (decrease) in fair value of the hedged item in a fair value hedge recognized in the income statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 815 -SubTopic 25 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480238/815-25-50-1 + Details
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