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Segment analysis - Additional information (Details) - USD ($) $ in Millions | 12 Months Ended
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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% |

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