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Pension Plan - Additional Information (Detail) - USD ($) | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Retirement Benefits [Abstract] |  |  |
Amount of contributions to contributory plan | $ 73,900,000 | $ 72,000,000 | $ 69,800,000
Accumulated benefit obligation | 85,600,000 | 87,300,000 |
Fair value of plan assets exceeded accumulated benefit obligation | 12,800,000 | $ 9,400,000 |
Estimated net loss that will be amortized from accumulated other comprehensive income over the next fiscal year | 0 |  |
Estimated prior service cost that will be amortized from accumulated other comprehensive income over the next fiscal year | $ 0 |  |

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