Related parties - Transaction with Associates (Details) - Associates - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Disclosure of transactions between related parties [line items] | |||
| Other operating income | $ 0.1 | $ 0.2 | |
| Operating expenses and cost of services | $ 3.4 | 4.0 | 3.4 |
| Finance income | $ 0.7 | $ 0.3 | $ 0.2 |