Accumulated Other Comprehensive Income or Loss and Earnings Per Share - Schedule of Computation of Basic and Diluted Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Equity [Abstract]
Net income	$ 164,198	$ 142,961	$ 499,146	$ 364,865
Less: Preferred stock dividends	6,991	6,991	20,973	20,973
Net income applicable to common shares	$ 157,207	$ 135,970	$ 478,173	$ 343,892
Weighted average common shares outstanding (in shares)	61,213	60,738	61,119	58,679
Effect of dilutive potential common shares
Common stock equivalents (in shares)	964	837	888	814
Average common shares and dilutive common shares (in shares)	62,177	61,575	62,007	59,493
Net income per common share:
Basic (usd per share)	$ 2.57	$ 2.24	$ 7.82	$ 5.86
Diluted (usd per share)	$ 2.53	$ 2.21	$ 7.71	$ 5.78