Retirement and Other Benefit Plans - Schedule of Weighted-Average Assumptions (Detail) - Pension	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Discount rate	6.00%	5.58%
Rate of increase in future compensation levels	4.50%	4.50%
Discount rate	5.58%	5.88%	3.44%
Rate of increase in future compensation levels	4.50%	4.50%	4.50%
Expected long-term rate of return on assets	6.75%	6.75%	6.75%