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Long-term assets - E.1.4. Cash used for the purchase of intangible 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 $ 98 $ 116 $ 156
Change in advances to suppliers (2) (3) 1
Change in accruals and payables for intangibles (2) 21 21
Cash used for additions $ 94 $ 133 $ 179