CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands		Total	Cumulative Effect, Period Of Adoption, Adjustment	Various Stock Compensation Plans And Agreements	Stock Repurchase Plan	Common Stock	Common Stock Various Stock Compensation Plans And Agreements	Common Stock Stock Repurchase Plan	Common Stock and Additional Paid-in Capital	Retained Earnings	Retained Earnings Cumulative Effect, Period Of Adoption, Adjustment	Treasury Stock	Treasury Stock Various Stock Compensation Plans And Agreements	Treasury Stock Stock Repurchase Plan	AOCI, Net of Tax
Beginning balance (in shares) at Dec. 31, 2021						141,907,954
Beginning balance at Dec. 31, 2021		$ 5,837,218							$ 1,893,725	$ 4,683,659		$ (649,785)			$ (90,381)
Increase (Decrease) in Stockholders' Equity
Net income		495,981								495,981
Other comprehensive loss		(510,267)													(510,267)
Issuance of common stock pursuant to various stock compensation plans and agreements (in shares)						639,847
Issuance of common stock pursuant to various stock compensation plans and agreements		20,507							20,507
Repurchase of common stock pursuant to the Stock Repurchase Program/various stock compensation plans and agreements (in shares)							(244,895)	(1,385,517)
Repurchase of common stock pursuant to the Stock Repurchase Program/various stock compensation plans and agreements				$ (18,977)	$ (99,990)								$ (18,977)
Cash dividends on common stock		(114,990)								(114,990)
Ending balance (in shares) at Jun. 30, 2022						140,917,389
Ending balance at Jun. 30, 2022		5,609,482							1,914,232	5,064,650		(768,752)			(600,648)
Beginning balance (in shares) at Mar. 31, 2022						142,256,520
Beginning balance at Mar. 31, 2022		5,703,456							1,903,042	4,863,721		(668,382)			(394,925)
Increase (Decrease) in Stockholders' Equity
Net income		258,329								258,329
Other comprehensive loss		(205,723)													(205,723)
Issuance of common stock pursuant to various stock compensation plans and agreements (in shares)						51,733
Issuance of common stock pursuant to various stock compensation plans and agreements		11,190							11,190
Repurchase of common stock pursuant to the Stock Repurchase Program/various stock compensation plans and agreements (in shares)							(5,347)	(1,385,517)
Repurchase of common stock pursuant to the Stock Repurchase Program/various stock compensation plans and agreements				(380)	$ (99,990)								(380)	$ (99,990)
Cash dividends on common stock		(57,400)								(57,400)
Ending balance (in shares) at Jun. 30, 2022						140,917,389
Ending balance at Jun. 30, 2022		5,609,482							1,914,232	5,064,650		(768,752)			(600,648)
Beginning balance (in shares) at Dec. 31, 2022						140,947,846
Beginning balance at Dec. 31, 2022		5,984,612							1,936,557	5,582,546		(768,862)			(765,629)
Beginning balance (Accounting Standards Update 2022-02) at Dec. 31, 2022	[1]		$ (4,262)								$ (4,262)
Increase (Decrease) in Stockholders' Equity
Net income		634,470								634,470
Other comprehensive loss		(16,303)													(16,303)
Issuance of common stock pursuant to various stock compensation plans and agreements (in shares)						851,819
Issuance of common stock pursuant to various stock compensation plans and agreements		23,227							23,227
Repurchase of common stock pursuant to the Stock Repurchase Program/various stock compensation plans and agreements (in shares)							(315,997)
Repurchase of common stock pursuant to the Stock Repurchase Program/various stock compensation plans and agreements				(23,028)									(23,028)
Cash dividends on common stock		(137,019)								(137,019)
Ending balance (in shares) at Jun. 30, 2023						141,483,668
Ending balance at Jun. 30, 2023		6,461,697							1,959,784	6,075,735		(791,890)			(781,932)
Beginning balance (in shares) at Mar. 31, 2023						141,395,800
Beginning balance at Mar. 31, 2023		6,309,331							1,947,687	5,832,291		(790,653)			(679,994)
Increase (Decrease) in Stockholders' Equity
Net income		312,031								312,031
Other comprehensive loss		(101,938)													(101,938)
Issuance of common stock pursuant to various stock compensation plans and agreements (in shares)						111,097
Issuance of common stock pursuant to various stock compensation plans and agreements		12,097							12,097
Repurchase of common stock pursuant to the Stock Repurchase Program/various stock compensation plans and agreements (in shares)							(23,229)
Repurchase of common stock pursuant to the Stock Repurchase Program/various stock compensation plans and agreements				$ (1,237)									$ (1,237)
Cash dividends on common stock		(68,587)								(68,587)
Ending balance (in shares) at Jun. 30, 2023						141,483,668
Ending balance at Jun. 30, 2023		$ 6,461,697							$ 1,959,784	$ 6,075,735		$ (791,890)			$ (781,932)

[1] Represents the change in the Company’s allowance for loan losses as a result of the adoption of Accounting Standards Update (“ASU”) 2022-02, Financial Instruments - Credit Losses (Topic 326): Troubled Debt Restructurings and the Vintage Disclosures on January 1, 2023. Refer to Note 2 — Current Accounting Developments and Summary of Significant Accounting Policies in this Form 10-Q for additional information.