Income taxes - deferred assets and liabilities (Details) - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Deferred tax assets: | ||
| Reserves and accrued expenses | $ 49.0 | $ 54.7 |
| Pension, postretirement and environmental liabilities | 0.5 | 8.2 |
| Net operating loss and deferred deductions | 367.2 | 458.7 |
| Other | 38.3 | 3.1 |
| Deferred tax assets, gross | 455.0 | 524.7 |
| Less: valuation allowances | (190.1) | (214.1) |
| Deferred tax assets, net | 264.9 | 310.6 |
| Deferred tax liabilities: | ||
| Intangibles | (611.8) | (656.1) |
| Property, plant and equipment | (64.8) | (57.8) |
| Investment in partnerships | (71.0) | (58.5) |
| Deferred tax liabilities | (747.6) | (772.4) |
| Net deferred tax liability | (482.7) | (461.8) |
| Other Assets | ||
| Deferred tax assets: | ||
| Deferred tax assets, net | 74.4 | 95.5 |
| Deferred income tax liabilities | ||
| Deferred tax liabilities: | ||
| Net deferred tax liability | $ (557.1) | $ (557.3) |
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- Definition Amount of deferred tax liability attributable to taxable temporary differences. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References No definition available.
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from postretirement benefits. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from reserves and accruals. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References No definition available.
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- Definition Amount of deferred tax liability attributable to taxable temporary differences from intangible assets other than goodwill. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of deferred tax liability attributable to taxable temporary differences from investments (excludes investments in subsidiaries and equity method investments). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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