Retirement Benefit Plan - Additional Information (Details) - USD ($) $ in Millions |
3 Months Ended | ||
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Dec. 31, 2025 |
|
| Employee Stock Ownership Plan (ESOP) Disclosures [Line Items] | |||
| Shares fully vested, Description | Shares allocated to a participant’s account are fully vested after three years of credited service, or in the event(s) of reaching age 65, death or disability while an active employee of the Company. | ||
| Shares fully vested after credited service | 3 years | ||
| Common stock shares outstanding including ESOP | 106,969,344 | 106,968,082 | |
| Company's stock held by ESOP | 50,046,241 | 50,864,117 | |
| Direct Costs of Contracts and Selling, General and Administrative Expense | |||
| Employee Stock Ownership Plan (ESOP) Disclosures [Line Items] | |||
| ESOP contribution expense | $ 19.3 | $ 17.8 | |