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Income Taxes - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Income Tax Disclosure [Abstract] |  |  |  |
Income taxes | $ 37.6 | $ 32.3 | $ 62.8 | $ 69.9
Effective income tax rate | 30.30% | 18.30% | 25.40% | 19.40%
Total amount of unrecognized tax benefits, including related interest and penalties | $ 76.5 |  | $ 76.5 |
Unrecognized tax benefits excluding interest and penalties that if recognized would affect the effective tax rate | 50.4 |  | 50.4 |
Total accrued interest for tax contingencies | 16.1 |  | 16.1 |
Total accrued penalties for tax contingencies | 3.6 |  | 3.6 |
Amount of unrecognized tax benefits that could decrease within the next 12 months | 10.0 |  | 10.0 |
Decrease in unrecognized tax benefits expiration of statute of limitations | 9.1 |  | 9.1 |
Decrease in unrecognized tax benefits due to the settlement of audits or resolution of administrative or judicial proceedings | $ 0.9 |  | $ 0.9 |

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