Earnings Per Common Share (Earnings Per Share Basic And Diluted) (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Earnings Per Share Reconciliation [Abstract]
Net income	$ 233,968	$ 95,713	$ 399,532	$ 297,826
Less: Preferred stock dividends	4,162	1,968	11,756	5,906
Earnings applicable to common shareholders	229,806	93,745	387,776	291,920
Net income available to common shareholders	229,806	93,745	387,776	291,920
Less: (Loss) earnings allocated to participating securities, basic	2,128	574	3,562	1,661
Less: (Loss) earnings allocated to participating securities, diluted	2,128	574	3,562	1,661
Earnings applicable to common shareholders	227,678	93,171	384,214	290,259
Earnings applicable to common shareholders	$ 227,678	$ 93,171	$ 384,214	$ 290,259
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Weighted-average common shares outstanding - basic (in shares)	173,868	90,038	165,743	89,960
Effect of dilutive securities (in shares)	76	194	70	226
Weighted-average common shares outstanding - diluted (in shares)	173,944	90,232	165,813	90,186
Earnings Per Share, Basic and Diluted [Abstract]
Basic (loss) earnings per common share (in dollars per share)	$ 1.31	$ 1.03	$ 2.32	$ 3.23
Diluted (loss) earnings per common share (in shares)	$ 1.31	$ 1.03	$ 2.32	$ 3.22