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	Preferred Series C	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 Preferred Series C	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	426,957
Ending balance at Sep. 30, 2023	6,627,299							209,691		$ 178,187			4,982,748		1,460,284						(201,892)		(1,719)
Ending balance (in shares) at Sep. 30, 2023										507,661
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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	141,346														141,346
Other comprehensive income (loss), net of tax	(37,145)																				(37,145)
Cash dividends declared:
Cash dividends declared on preferred stock				(1,797)	(2,330)													(1,797)	(2,330)
Cash dividends declared on common stock	(56,459)														(56,459)
Effect of stock incentive plan, net (in shares)										42
Effect of stock incentive plan, net	8,500												8,241		(10)								269
Ending balance at Sep. 30, 2023	6,627,299							209,691		$ 178,187			4,982,748		1,460,284						(201,892)		(1,719)
Ending balance (in shares) at Sep. 30, 2023										507,661
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	264,560
Ending balance at Sep. 30, 2024	6,972,380							354,345		$ 178,661			5,002,718		1,551,428						(114,772)		0
Ending balance (in shares) at Sep. 30, 2024										509,253
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
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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	97,856														97,856
Other comprehensive income (loss), net of tax	47,841																				47,841
Cash dividends declared:
Cash dividends declared on preferred stock				$ (1,797)	$ (2,395)	$ (1,925)												$ (1,797)	$ (2,395)	$ (1,925)
Cash dividends declared on common stock	(56,687)														(56,687)
Preferred Stock Issued	144,654							144,654
Effect of stock incentive plan, net (in shares)										48
Effect of stock incentive plan, net	7,096									$ 16			7,080
Ending balance at Sep. 30, 2024	$ 6,972,380							$ 354,345		$ 178,661			$ 5,002,718		$ 1,551,428						$ (114,772)		$ 0
Ending balance (in shares) at Sep. 30, 2024										509,253