Income Taxes - Additional Information (Detail) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2021 |
Sep. 30, 2020 |
Sep. 30, 2021 |
Sep. 30, 2020 |
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| Income Tax Disclosure [Abstract] | ||||
| Income taxes | $ 34.3 | $ 33.6 | $ 104.2 | $ 104.4 |
| Effective income tax rate | 22.60% | 19.50% | 20.30% | 25.90% |
| Total amount of unrecognized tax benefits, including related interest and penalties | $ 76.8 | $ 76.8 | ||
| Unrecognized tax benefits excluding interest and penalties that if recognized would affect the effective tax rate | 53.5 | 53.5 | ||
| Total accrued interest for tax contingencies | 15.0 | 15.0 | ||
| Total accrued penalties for tax contingencies | 2.5 | 2.5 | ||
| Amount of unrecognized tax benefits that could decrease within the next 12 months | $ 9.1 | $ 9.1 | ||
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- Definition Gross balance of unrecognized tax benefits including interest and penalties. No definition available.
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- Definition Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of statutory penalties accrued for a tax position claimed or expected to be claimed by the entity, in its tax return. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of interest expense accrued for an underpayment of income taxes. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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