Benefit Plans - Schedule of Assumptions (Detail)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Pension plans
Benefit obligation assumptions
Discount rate	4.34%	4.83%	4.26%
Rate of compensation increase	3.74%	3.78%	3.70%
Net periodic benefit expense assumptions
Discount rate	4.83%	4.26%	4.77%
Expected long-term return on plan assets	5.42%	4.36%	4.76%
Rate of compensation increase	3.78%	3.70%	3.80%
Other post-retirement plans
Benefit obligation assumptions
Discount rate	4.79%	5.31%	4.84%
Net periodic benefit expense assumptions
Discount rate	5.31%	4.84%	5.11%