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v3.21.2

Derivative instruments (Summary of Income and Expense Line Items) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Total revenues | $ 6,706 | $ 6,423 | $ 19,133 | $ 18,790
Other income, net | 73 | 55 | 97 | 69
Interest expense, net | (296) | (302) | (862) | (944)
Interest rate swap agreements [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Gains (losses) on fair value hedging relationships, Hedged items | 54 | 35 | 195 | 215
Gains (losses) on fair value hedging relationships, Derivatives designated as hedging instruments | (31) | (13) | (128) | (150)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Cash flow hedges [Member] | Cross-currency swap contracts [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Other income, net | (104) | 183 | (190) | 101
Product sales [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Total revenues | 6,320 | 6,104 | 18,026 | 17,906
Product sales [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Cash flow hedges [Member] | Foreign currency contracts [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Total revenues | $ (5) | $ 41 | $ (24) | $ 158

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