Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Preferred Stock Series F Issued	Preferred Stock Series G Issued	Preferred Stock	Common Stock	Paid-In Capital	Retained Earnings	Retained Earnings Preferred Stock Series F Issued	Retained Earnings Preferred Stock Series G Issued	Treasury Stock, at cost	Accumulated Other Comprehensive (Loss), Net of Tax
Balance, beginning of period at Dec. 31, 2023	$ 8,689,996			$ 283,979	$ 1,828	$ 6,179,753	$ 3,282,530			$ (507,523)	$ (550,571)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	216,323						216,323
Other comprehensive income (loss), net of tax	(65,530)										(65,530)
Common stock dividends and equivalents	(68,989)						(68,989)
Preferred stock dividends		$ (1,969)	$ (2,194)					$ (1,969)	$ (2,194)
Stock-based compensation	13,760					(40,818)				54,578
Common shares acquired from stock compensation plan activity	(13,496)									(13,496)
Common stock repurchase program	(20,403)									(20,403)
Balance, end of period at Mar. 31, 2024	8,747,498			283,979	1,828	6,138,935	3,425,701			(486,844)	(616,101)
Balance, beginning of period at Dec. 31, 2024	9,133,214			283,979	1,828	6,181,475	3,759,158			(536,843)	(556,383)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	226,917						226,917
Other comprehensive income (loss), net of tax	106,982										106,982
Common stock dividends and equivalents	(68,743)						(68,743)
Preferred stock dividends		$ (1,969)	$ (2,194)					$ (1,969)	$ (2,194)
Stock-based compensation	14,011					(40,590)				54,601
Common shares acquired from stock compensation plan activity	(21,782)									(21,782)
Common stock repurchase program	(182,282)									(182,282)
Balance, end of period at Mar. 31, 2025	$ 9,204,154			$ 283,979	$ 1,828	$ 6,140,885	$ 3,913,169			$ (686,306)	$ (449,401)