CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	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	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, 2020				141,565,229
Beginning balance at Dec. 31, 2020	$ 5,269,175						$ 1,858,519	$ 4,000,414	$ (634,083)			$ 44,325
Increase (Decrease) in Stockholders' Equity
Net income	655,185							655,185
Other comprehensive loss	(101,893)											(101,893)
Issuance of common stock pursuant to various stock compensation plans and agreements (in shares)				523,449
Issuance of common stock pursuant to various stock compensation plans and agreements	25,520						25,520
Repurchase of common stock pursuant to various stock compensation plans and agreements and Stock Repurchase Plan (in shares)					(204,947)
Repurchase of common stock pursuant to various stock compensation plans and agreements and Stock Repurchase Plan		$ (15,508)								$ (15,508)
Cash dividends on common stock	(142,278)							(142,278)
Ending balance (in shares) at Sep. 30, 2021				141,883,731
Ending balance at Sep. 30, 2021	5,690,201						1,884,039	4,513,321	(649,591)			(57,568)
Beginning balance (in shares) at Jun. 30, 2021				141,877,505
Beginning balance at Jun. 30, 2021	5,547,548						1,876,247	4,335,327	(649,337)			(14,689)
Increase (Decrease) in Stockholders' Equity
Net income	225,449							225,449
Other comprehensive loss	(42,879)											(42,879)
Issuance of common stock pursuant to various stock compensation plans and agreements (in shares)				9,643
Issuance of common stock pursuant to various stock compensation plans and agreements	7,792						7,792
Repurchase of common stock pursuant to various stock compensation plans and agreements and Stock Repurchase Plan (in shares)					(3,417)
Repurchase of common stock pursuant to various stock compensation plans and agreements and Stock Repurchase Plan		(254)								(254)
Cash dividends on common stock	(47,455)							(47,455)
Ending balance (in shares) at Sep. 30, 2021				141,883,731
Ending balance at Sep. 30, 2021	5,690,201						1,884,039	4,513,321	(649,591)			(57,568)
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	791,320							791,320
Other comprehensive loss	(709,651)											(709,651)
Issuance of common stock pursuant to various stock compensation plans and agreements (in shares)				640,053
Issuance of common stock pursuant to various stock compensation plans and agreements	32,836						32,836
Repurchase of common stock pursuant to various stock compensation plans and agreements and Stock Repurchase Plan (in shares)					(244,978)	(1,385,517)
Repurchase of common stock pursuant to various stock compensation plans and agreements and Stock Repurchase Plan		(18,983)	$ (99,990)							(18,983)	$ (99,990)
Cash dividends on common stock	(172,082)							(172,082)
Ending balance (in shares) at Sep. 30, 2022				140,917,512
Ending balance at Sep. 30, 2022	5,660,668						1,926,561	5,302,897	(768,758)			(800,032)
Beginning balance (in shares) at Jun. 30, 2022				140,917,389
Beginning balance at Jun. 30, 2022	5,609,482						1,914,232	5,064,650	(768,752)			(600,648)
Increase (Decrease) in Stockholders' Equity
Net income	295,339							295,339
Other comprehensive loss	(199,384)											(199,384)
Issuance of common stock pursuant to various stock compensation plans and agreements (in shares)				206
Issuance of common stock pursuant to various stock compensation plans and agreements	12,329						12,329
Repurchase of common stock pursuant to various stock compensation plans and agreements and Stock Repurchase Plan (in shares)					(83)
Repurchase of common stock pursuant to various stock compensation plans and agreements and Stock Repurchase Plan		$ (6)								$ (6)
Cash dividends on common stock	(57,092)							(57,092)
Ending balance (in shares) at Sep. 30, 2022				140,917,512
Ending balance at Sep. 30, 2022	$ 5,660,668						$ 1,926,561	$ 5,302,897	$ (768,758)			$ (800,032)