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Income Taxes (Narrative) (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022 | Dec. 31, 2022
Income Tax Disclosure [Abstract] |  |  |  |  |
Effective income tax rates | 23.40% | 22.10% | 23.30% | 23.20% |
Liability for income taxes associated with uncertain tax positions | $ 4.8 |  | $ 4.8 |  | $ 3.2
Offsetting Tax Benefits To Liability For Income Taxes Associated With Uncertain Tax Positions | $ 2.8 |  | 2.8 |  | 2.2
Other tax benefits related to interest and penalties of uncertain tax positions |  |  | $ 1.6 |  | $ 0.0
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 income tax on certain large corporations percentage as part of Inflation Reduction Act |  |  | 15.00% |  |
Excise tax percentage on corporate stock repurchases as part of Inflation Reduction Act |  |  | 1.00% |  |

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