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Income Taxes (Narrative) (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Income Tax Disclosure [Abstract] |  |  |  |  |
Effective income tax rates | 28.40% | 29.40% | 8.90% | 23.20% |
Deferred tax asset valuation allowance | $ 13.7 |  | $ 13.7 |  | $ 13.7
Liabilities for income taxes associated with uncertain tax positions | 30.5 |  | 30.5 |  | 12.4
Offsetting tax benefits related to uncertain tax positions | $ 3.6 |  | $ 3.6 |  | $ 0.8
Unrecognized tax positions increase decrease, months |  |  | It is reasonably possible that the unrecognized benefit with respect to certain of the Company’s unrecognized tax positions may increase or decrease within the next 12 months. Any such change may be the result of either ongoing audits or the expiration of federal and state statutes of limitations for the assessment of taxes. |  |
Minimum tax rate in jurisdictions which it operates percentage subject to international anti-base erosion rules |  |  | 15.00% |  |

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