Capital and reserves - Earnings (Loss) per share (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Capital and reserves | |||
| Profit (loss) attributable to ordinary shareholders used to calculate basic and diluted earnings per share | $ 479.2 | $ 2,147.7 | $ (2,695.6) |
| Number of outstanding shares at the beginning of the period used to calculate basic earnings per share | 120,423,333 | 120,286,627 | 120,149,921 |
| Effect of share options | 30,338 | 70,688 | 63,110 |
| Weighted average number of ordinary shares used to calculate basic earnings per share | 120,453,671 | 120,357,315 | 120,213,031 |
| Effect of share options | 62,183 | 135,110 | |
| Weighted average number of ordinary shares used to calculate diluted earnings per share | 120,515,854 | 120,492,425 | 120,213,031 |