Other liabilities - Liabilities Recognized (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Provision for Reforestation | ||
| Provision for decommissioning, restoration and rehabilitation costs [Roll Forward] | ||
| Other provisions at beginning of period | $ 83 | $ 92 |
| Acquisition | 0 | 0 |
| Liabilities recognized | 59 | 49 |
| Liabilities settled | (57) | (61) |
| Change in estimates | (1) | 10 |
| Foreign exchange | 4 | (7) |
| Other provisions at end of period | 88 | 83 |
| Less: current portion | (38) | (36) |
| Non-current portion of reforestation obligations | 50 | 47 |
| Provision for Decommissioning | ||
| Provision for decommissioning, restoration and rehabilitation costs [Roll Forward] | ||
| Other provisions at beginning of period | 43 | 37 |
| Acquisition | 0 | 1 |
| Liabilities recognized | 21 | 9 |
| Liabilities settled | (12) | (4) |
| Change in estimates | 3 | 3 |
| Foreign exchange | 4 | (3) |
| Other provisions at end of period | 58 | 43 |
| Less: current portion | (14) | (19) |
| Non-current portion of reforestation obligations | $ 44 | $ 24 |