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Intangible assets other than goodwill (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Disclosure of detailed information about intangible assets [abstract]        
Impairment of intangibles $ 43 $ 9 $ 43 $ 9