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Earnings Per Share - Additional Information (Detail) - $ / shares
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2025
Jun. 30, 2024
Schedule Of Earnings Per Share [Line Items]          
Common share dividends declared per share $ 1.5 $ 0.52   $ 1.5 $ 1.04
Performance Restricted Stock Units [Member]          
Schedule Of Earnings Per Share [Line Items]          
Common shares issued     178,527    
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       300,000