Earnings Per Share - Additional Information (Detail) - $ / shares shares in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Schedule Of Earnings Per Share [Line Items] | ||||
| Common share dividends declared per share | $ 0 | $ 3.25 | $ 1 | $ 4.75 |
| Restricted Stock units ("RSUs") [Member] | ||||
| Schedule Of Earnings Per Share [Line Items] | ||||
| Options to purchase common shares not included in the computation of diluted EPS | 0.2 | 0.3 | ||