Related parties - Key management personnel (Details) - USD ($) $ in Millions |
12 Months Ended | ||||
|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Disclosure of transactions between related parties [abstract] | |||||
| Short-term employee benefits | [1] | $ 5.5 | $ 5.6 | $ 3.7 | |
| Share-based compensation | [1] | 0.9 | 2.1 | 4.0 | |
| Long-term employee benefits | [1] | $ 0.5 | $ 0.5 | $ 0.4 | |
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