Income taxes - changes to uncertain tax positions (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Changes to the reserve for uncertain tax positions | |||
| Beginning balance | $ 83.3 | $ 106.9 | $ 51.8 |
| Additions: | |||
| Tax positions related to the current year | 1.1 | 1.1 | 0.0 |
| Tax positions related to prior years | 34.0 | 1.6 | 65.2 |
| Reductions: | |||
| Settlements with taxing authorities | (18.1) | 0.0 | (6.3) |
| Lapse of statutes of limitations | (1.4) | (25.6) | (4.5) |
| Currency translation increase | 8.0 | 0.7 | |
| Currency translation decrease | (0.7) | ||
| Ending balance | $ 106.9 | $ 83.3 | $ 106.9 |
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- Definition Unrecognized Tax Benefits Decrease [Abstract] No definition available.
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- Definition Unrecognized Tax Benefits Increase [Abstract] No definition available.
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Amount of unrecognized tax benefits. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of decrease in unrecognized tax benefits resulting from foreign currency translation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of increase in unrecognized tax benefits resulting from foreign currency translation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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