Benefit Plans - Assumptions Used to Determine Net Periodic Benefit Expense (Detail) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Pension plans | |||
| Defined Benefit Plan Disclosure [Line Items] | |||
| Discount rate | 3.47% | 3.47% | 4.22% |
| Expected long-term return on plan assets | 2.62% | 2.71% | 2.73% |
| Rate of compensation increase | 3.48% | 3.47% | 3.49% |
| Post-retirement | |||
| Defined Benefit Plan Disclosure [Line Items] | |||
| Discount rate | 5.48% | 4.94% | 5.19% |
| Expected long-term return on plan assets | 0.00% | 0.00% | 0.00% |
| Rate of compensation increase | 0.00% | 0.00% | 0.00% |