Employee Benefit Plans - Defined Benefit Obligation - Other Disclosures (Detail) - Present Value of Defined Benefit Obligation [Member] - Percentage of Participants in Defined Benefits Plans [Member] |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Disclosure of net defined benefit liability (asset) [Line Items] | ||
| Percentage attributable to active employees | 17.00% | 19.00% |
| Percentage attributable to deferred (former employees) | 32.00% | 35.00% |
| Percentage attributable to retirees | 51.00% | 46.00% |
| Total participation | 100.00% | 100.00% |
| Employee participation percentage | 100.00% | 100.00% |
| U.S. [Member] | ||
| Disclosure of net defined benefit liability (asset) [Line Items] | ||
| Employee participation percentage | 70.00% | 71.00% |
| U.K. [Member] | ||
| Disclosure of net defined benefit liability (asset) [Line Items] | ||
| Employee participation percentage | 25.00% | 24.00% |
| Rest of World [Member] | ||
| Disclosure of net defined benefit liability (asset) [Line Items] | ||
| Employee participation percentage | 5.00% | 5.00% |