Earnings Per Common Share (Earnings Per Share Basic And Diluted) (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share Reconciliation [Abstract]
Net income	$ 644,283	$ 408,864	$ 220,621
Less: Preferred stock dividends	15,919	7,875	7,875
Net income available to common shareholders, basic	628,364	400,989	212,746
Net income available to common shareholders, diluted	628,364	400,989	212,746
Less: Earnings applicable to participating securities, basic	5,672	2,302	1,272
Less: Earnings applicable to participating securities, diluted	5,672	2,302	1,272
Earnings applicable to common shareholders	622,692	398,687	211,474
Earnings applicable to common shareholders, diluted	$ 622,692	$ 398,687	$ 211,474
Earnings per common share:
Earnings per common share, Basic (in dollars per share)	$ 3.72	$ 4.43	$ 2.35
Earnings per common share, Diluted (in dollars per share)	$ 3.72	$ 4.42	$ 2.35
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Weighted-average common shares outstanding - basic	167,452	89,983	89,967
Stock options and restricted stock (in shares)	95	223	184
Weighted Average Number of Shares Outstanding, Diluted	167,547	90,206	90,151