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Earnings Per Common Share - Schedule of Earnings Per Share Basic and Diluted (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Earnings Per Share Reconciliation [Abstract]      
Net income $ 1,002,802 $ 768,707 $ 867,840
Preferred stock dividends 16,650 16,650 16,650
Income allocated to participating securities 11,291 7,981 7,922
Net income applicable to common stockholders $ 974,861 $ 744,076 $ 843,268
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]      
Weighted-average common shares outstanding - basic (in shares) 164,842 169,820 171,775
Add: Effect of dilutive stock options and restricted stock (in shares) 364 372 108
Weighted-average common shares outstanding - diluted (in shares) 165,206 170,192 171,883
Earnings per common share:      
Basic earnings per common share (in dollars per share) $ 5.91 $ 4.38 $ 4.91
Diluted earnings per common share (in dollars per share) $ 5.90 $ 4.37 $ 4.91