Finance costs (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
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| Finance costs. | ||||||||
| Interest expenses - third party borrowings | $ 65.6 | $ 57.1 | $ 135.3 | $ 124.3 | ||||
| Fair value loss on non-deliverable forwards | 17.4 | 30.4 | ||||||
| Interest and finance charges for lease liabilities | 12.3 | 9.3 | 23.9 | 18.2 | ||||
| Interest expenses - withholding tax on interest | 4.2 | 8.3 | 8.8 | 16.9 | ||||
| Net foreign exchange loss arising from financing - realized | 1.8 | 1.4 | 4.5 | 6.9 | ||||
| Fees on borrowings and financial derivatives | 1.6 | 1.9 | 3.3 | 3.5 | ||||
| Unwinding of discount on decommissioning liability | 1.3 | 1.4 | 2.6 | 2.8 | ||||
| Fair value loss on contingent consideration | 1.3 | 1.3 | ||||||
| Finance costs | $ 105.5 | $ 79.4 | [1] | $ 210.1 | $ 172.6 | [1] | ||
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