Financial instruments - Disclosure of net value of unsettled positions for derivative forward contracts and swaps (Details) - USD ($) $ in Millions |
Jun. 30, 2024 |
Dec. 31, 2023 |
|---|---|---|
| Financial Instruments [Abstract] | ||
| Unrealized gains in Other current assets | $ 11 | $ 2 |
| Unrealized losses in Current financial debts | (1) | (10) |
| Net value of unsettled positions for derivatives contracts | $ 10 | $ (8) |