CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Cumulative Effect, Period of Adoption, Adjusted Balance	Preferred Series A	Preferred Series B	Common Stock	Preferred Stock	Preferred Stock Cumulative Effect, Period of Adoption, Adjusted Balance	Common Stock	Common Stock Cumulative Effect, Period of Adoption, Adjusted Balance	Common Stock Common Stock	Surplus	Surplus Cumulative Effect, Period of Adoption, Adjusted Balance	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Retained Earnings Cumulative Effect, Period of Adoption, Adjusted Balance	Retained Earnings Preferred Series A	Retained Earnings Preferred Series B	Retained Earnings Common Stock	Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss Cumulative Effect, Period of Adoption, Adjusted Balance	Treasury Stock	Treasury Stock Cumulative Effect, Period of Adoption, Adjusted Balance
Beginning balance at Dec. 31, 2022	$ 6,400,802	$ 990	$ 6,401,792				$ 209,691	$ 209,691	$ 178,185	$ 178,185		$ 4,980,231	$ 4,980,231	$ 1,218,445	$ 990	$ 1,219,435				$ (164,002)	$ (164,002)	$ (21,748)	$ (21,748)
Beginning balance (in shares) at Dec. 31, 2022									506,374	506,374
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	146,551													146,551
Other comprehensive income (loss), net of tax	20,355																			20,355
Cash dividends declared:
Cash dividends declared on preferred stock				$ (1,797)	$ (2,077)												$ (1,797)	$ (2,077)
Cash dividends declared on common stock						$ (56,488)													$ (56,488)
Effect of stock incentive plan, net (in shares)									1,061
Effect of stock incentive plan, net	(505)								$ 1			(12,569)		(3,994)								16,057
Common stock issued (in shares)											327
Common stock issued						3,750								(650)								4,400
Ending balance at Mar. 31, 2023	6,511,581						209,691		$ 178,186			4,967,662		1,300,980						(143,647)		(1,291)
Ending balance (in shares) at Mar. 31, 2023									507,762
Beginning balance at Dec. 31, 2022	6,400,802	$ 990	$ 6,401,792				209,691	$ 209,691	$ 178,185	$ 178,185		4,980,231	$ 4,980,231	1,218,445	$ 990	$ 1,219,435				(164,002)	$ (164,002)	(21,748)	$ (21,748)
Beginning balance (in shares) at Dec. 31, 2022									506,374	506,374
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	285,611
Ending balance at Jun. 30, 2023	6,575,184						209,691		$ 178,187			4,974,507		1,379,534						(164,747)		(1,988)
Ending balance (in shares) at Jun. 30, 2023									507,619
Beginning balance at Mar. 31, 2023	6,511,581						209,691		$ 178,186			4,967,662		1,300,980						(143,647)		(1,291)
Beginning balance (in shares) at Mar. 31, 2023									507,762
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	139,060													139,060
Other comprehensive income (loss), net of tax	(21,100)																			(21,100)
Cash dividends declared:
Cash dividends declared on preferred stock				(1,797)	(2,233)												(1,797)	(2,233)
Cash dividends declared on common stock						(56,474)													(56,474)
Effect of stock incentive plan, net (in shares)									157
Effect of stock incentive plan, net	8,239								$ 1			6,845		(2)								1,395
Common stock repurchased (in shares)									(300)
Common stock repurchased	(2,092)																					(2,092)
Ending balance at Jun. 30, 2023	6,575,184						209,691		$ 178,187			4,974,507		1,379,534						(164,747)		(1,988)
Ending balance (in shares) at Jun. 30, 2023									507,619
Beginning balance at Dec. 31, 2023	6,701,391						209,691		$ 178,187			4,989,989		1,471,371						(146,456)		(1,391)
Beginning balance (in shares) at Dec. 31, 2023									507,710
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	96,280													96,280
Other comprehensive income (loss), net of tax	(10,392)																			(10,392)
Cash dividends declared:
Cash dividends declared on preferred stock				(1,797)	(2,322)												(1,797)	(2,322)
Cash dividends declared on common stock						(56,794)													(56,794)
Effect of stock incentive plan, net (in shares)									1,183
Effect of stock incentive plan, net	773								$ 348			(966)										1,391
Ending balance at Mar. 31, 2024	6,727,139						209,691		$ 178,535			4,989,023		1,506,738						(156,848)		0
Ending balance (in shares) at Mar. 31, 2024									508,893
Beginning balance at Dec. 31, 2023	6,701,391						209,691		$ 178,187			4,989,989		1,471,371						(146,456)		(1,391)
Beginning balance (in shares) at Dec. 31, 2023									507,710
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	166,704
Ending balance at Jun. 30, 2024	6,737,737						209,691		$ 178,645			4,995,638		1,516,376						(162,613)		0
Ending balance (in shares) at Jun. 30, 2024									509,205
Beginning balance at Mar. 31, 2024	6,727,139						209,691		$ 178,535			4,989,023		1,506,738						(156,848)		0
Beginning balance (in shares) at Mar. 31, 2024									508,893
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	70,424													70,424
Other comprehensive income (loss), net of tax	(5,765)																			(5,765)
Cash dividends declared:
Cash dividends declared on preferred stock				$ (1,797)	$ (2,311)												$ (1,797)	$ (2,311)
Cash dividends declared on common stock						$ (56,678)													$ (56,678)
Effect of stock incentive plan, net (in shares)									312
Effect of stock incentive plan, net	6,725								$ 110			6,615		0								0
Ending balance at Jun. 30, 2024	$ 6,737,737						$ 209,691		$ 178,645			$ 4,995,638		$ 1,516,376						$ (162,613)		$ 0
Ending balance (in shares) at Jun. 30, 2024									509,205