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Derivative instruments - Fair Value of Derivatives (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Assets |  |
Total derivative assets, fair value | $ 145 | $ 341
Liabilities |  |
Total derivative liabilities, fair value | 1,092 | 1,398
Designated as Hedging Instrument |  |
Assets |  |
Total derivative assets, fair value | 145 | 341
Liabilities |  |
Total derivative liabilities, fair value | 1,092 | 1,398
Designated as Hedging Instrument | Foreign currency forward contracts | Other current assets/ Other noncurrent assets |  |
Assets |  |
Total derivative assets, fair value | 145 | 287
Designated as Hedging Instrument | Foreign currency forward contracts | Accrued liabilities/ Other noncurrent liabilities |  |
Liabilities |  |
Total derivative liabilities, fair value | 116 | 76
Designated as Hedging Instrument | Cross-currency swap contracts | Other current assets/ Other noncurrent assets |  |
Assets |  |
Total derivative assets, fair value | 0 | 54
Designated as Hedging Instrument | Cross-currency swap contracts | Accrued liabilities/ Other noncurrent liabilities |  |
Liabilities |  |
Total derivative liabilities, fair value | 405 | 541
Designated as Hedging Instrument | Interest rate swap contracts | Other current assets/ Other noncurrent assets |  |
Assets |  |
Total derivative assets, fair value | 0 | 0
Designated as Hedging Instrument | Interest rate swap contracts | Accrued liabilities/ Other noncurrent liabilities |  |
Liabilities |  |
Total derivative liabilities, fair value | 571 | 776
Designated as Hedging Instrument | Forward interest rate contracts | Other current assets/ Other noncurrent assets |  |
Assets |  |
Total derivative assets, fair value | 0 | 0
Designated as Hedging Instrument | Forward interest rate contracts | Accrued liabilities/ Other noncurrent liabilities |  |
Liabilities |  |
Total derivative liabilities, fair value | $ 0 | $ 5

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