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Income Taxes - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Income Tax Disclosure [Abstract] |  |  |  |
Income taxes | $ 23.2 | $ 26.4 | $ 40.4 | $ 53.3
Effective income tax rate | 32.90% | 38.20% | 34.60% | 28.80%
Total amount of unrecognized tax benefits, including related interest and penalties | $ 68.5 |  | $ 68.5 |
Unrecognized tax benefits excluding interest and penalties that if recognized would affect the effective tax rate | 48.2 |  | 48.2 |
Total accrued interest for tax contingencies | 14.9 |  | 14.9 |
Total accrued penalties for tax contingencies | 1.9 |  | 1.9 |
Amount of unrecognized tax benefits that could decrease within the next 12 months | 9.2 |  | 9.2 |
Decrease in unrecognized tax benefits expiration of statute of limitations | 8.3 |  | 8.3 |
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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