Earnings Per Common Share (Earnings Per Share Basic And Diluted) (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Earnings Per Share Reconciliation [Abstract]
Net income	$ 234,968	$ 182,311	$ 455,972	$ 165,564
Less: Preferred stock dividends	4,162	4,163	8,325	7,594
Earnings applicable to common stockholders	230,806	178,148	447,647	157,970
Net income available to common stockholders	230,806	178,148	447,647	157,970
Less: (Loss) earnings allocated to participating securities, basic	2,235	1,718	4,073	1,456
Less: (Loss) earnings allocated to participating securities, diluted	2,235	1,718	4,073	1,456
Earnings applicable to common stockholders	228,571	176,430	443,574	156,514
Earnings applicable to common stockholders	$ 228,571	$ 176,430	$ 443,574	$ 156,514
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Weighted-average common shares outstanding - basic (in shares)	172,739	175,845	172,752	161,698
Effect of dilutive securities (in shares)	64	50	87	87
Weighted-average common shares outstanding - diluted (in shares)	172,803	175,895	172,839	161,785
Earnings Per Share, Basic and Diluted [Abstract]
Basic (loss) earnings per common share (in dollars per share)	$ 1.32	$ 1.00	$ 2.57	$ 0.97
Diluted (loss) earnings per common share (in shares)	$ 1.32	$ 1.00	$ 2.57	$ 0.97