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Retirement Plans and Other Postretirement Benefits - Amounts Recognized in Accumulated Other Comprehensive Income, Net of Taxes (Detail) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
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Defined Benefit Plan Disclosure [Line Items] |  |
Total recognized | $ 186,107 | $ 206,821
Net actuarial loss |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total recognized | 184,489 | 205,193
Prior service costs |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total recognized | 1,616 | 1,625
Transition asset |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total recognized | $ 2 | $ 3

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