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Segment analysis - Additional information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Segment analysis      
Revenue $ 4,908 $ 4,812 $ 4,689
Non-current assets $ 3,832 $ 4,164  
U.S.      
Segment analysis      
Percent of non-current assets 47.00% 44.00%  
Revenue $ 2,122 $ 2,307 2,181
Brazil      
Segment analysis      
Percent of non-current assets 17.00% 17.00%  
U.K      
Segment analysis      
Revenue $ 509 $ 495 385
Luxembourg      
Segment analysis      
Revenue 0 0 $ 0
Non-current assets $ 0 $ 0  
Germany      
Segment analysis      
Percent of non-current assets 13.00% 12.00%