Retirement Benefit Plans - Weighted Average Actuarial Assumptions Used to Determine Net Pension Expense for Our Defined Benefit Retirement Plans (Detail) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| United States [Member] | |||
| Pension Plans, Postretirement and Other Employee Benefits [Line Items] | |||
| Discount rate | 5.27% | 4.97% | 5.25% |
| Expected long-term rate of return on plan assets | 6.75% | 6.75% | 6.75% |
| Foreign [Member] | |||
| Pension Plans, Postretirement and Other Employee Benefits [Line Items] | |||
| Discount rate | 1.71% | 2.18% | 2.60% |
| Rate of compensation increase | 2.46% | 2.49% | 2.33% |
| Expected long-term rate of return on plan assets | 3.02% | 3.30% | 3.17% |