Compensation and Benefit Plans - Schedule of Stock Option Activity and Related Information (Parenthetical) (Detail) - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Share-Based Payment Arrangement [Abstract] | ||
| Average Intrinsic Value, Outstanding, end of year | $ 5.0 | $ 2.3 |
| Average Intrinsic Value, Exercisable, end of year | $ 3.0 | $ 1.3 |