Valuation and qualifying accounts (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Allowance for expected credit losses | |||
| Changes to valuation and qualifying accounts | |||
| Beginning balance | $ 30.2 | $ 35.0 | $ 28.2 |
| Cumulative effect of adopting new accounting standard | 4.0 | 5.3 | 15.3 |
| Deductions | (6.2) | (9.0) | (9.2) |
| Currency translation | 1.6 | (1.1) | 0.7 |
| Ending balance | 29.6 | 30.2 | 35.0 |
| Valuation allowances on deferred tax assets | |||
| Changes to valuation and qualifying accounts | |||
| Beginning balance | 214.1 | 206.1 | 179.7 |
| Cumulative effect of adopting new accounting standard | (48.3) | 21.8 | 20.2 |
| Deductions | 0.0 | 0.0 | 0.0 |
| Currency translation | 24.3 | (13.8) | 6.2 |
| Ending balance | $ 190.1 | $ 214.1 | $ 206.1 |