Borrowings - Schedule of borrowings (Details) - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Disclosure of detailed information about borrowings [line items] | ||
| Current | $ 294 | $ 273 |
| Non-Current | 4,841 | 5,001 |
| Term A Loans (Secured) | ||
| Disclosure of detailed information about borrowings [line items] | ||
| Current | 50 | 53 |
| Non-Current | 890 | 909 |
| Term B Loans (Secured) | ||
| Disclosure of detailed information about borrowings [line items] | ||
| Current | 244 | 207 |
| Non-Current | 1,563 | 1,707 |
| Secured Notes | ||
| Disclosure of detailed information about borrowings [line items] | ||
| Current | 0 | 7 |
| Non-Current | 1,436 | 1,434 |
| Unsecured Notes | ||
| Disclosure of detailed information about borrowings [line items] | ||
| Current | 0 | 6 |
| Non-Current | $ 952 | $ 951 |