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Long-term assets - E.2.3. Cash used for the purchase of tangible assets (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Subclassifications of assets, liabilities and equities [abstract]      
Additions $ 579 $ 694 $ 823
Change in advances to suppliers (2) 3 (3)
Change in accruals and payables for property, plant and equipment (37) 116 (20)
Cash used $ 540 $ 814 $ 800