Finance Costs (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Finance costs. | ||||
| Interest expense - third party borrowings | $ 72.2 | $ 78.7 | $ 152.7 | $ 172.0 |
| Interest and finance charges for lease liabilities | 16.6 | 18.4 | 32.2 | 34.1 |
| Fees on borrowings and financial derivatives | 13.5 | 3.1 | 15.3 | 8.0 |
| Interest expense - withholding tax paid on bond interest | 8.3 | 7.1 | 16.9 | 7.1 |
| Unwinding of discount on decommissioning liability | 2.3 | 2.2 | 4.6 | 4.5 |
| Net foreign exchange loss arising from financing - realized | 1.4 | 7.0 | 23.3 | |
| Net foreign exchange loss arising from financing - unrealized | 169.7 | 1,543.4 | ||
| Net foreign exchange loss on derivative instruments - realized | 20.3 | |||
| Finance costs | $ 114.3 | $ 279.2 | $ 228.7 | $ 1,812.7 |