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Other liabilities and provisions - Other provisions narrative (Details) - USD ($)
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure of other provisions [line items]      
Other provisions $ 33,000,000 $ 48,000,000 $ 25,000,000
Restructuring provision 4,000,000 30,000,000  
Senior management [member]      
Disclosure of other provisions [line items]      
Long-term cash bonus incentive provisions 17,000,000 10,000,000  
Legal and probable environmental claims      
Disclosure of other provisions [line items]      
Other provisions $ 12,000,000 $ 8,000,000