Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock, Common [Member]	Total
Balances at Dec. 31, 2020	$ 1,671	$ 408,244	$ 4,984,739	$ (2,794,516)	$ 2,600,138
Net earnings	0	0	760,806	0	$ 760,806
Cash dividend declared and paid per share (in dollars per share)					$ 1.18
Cash dividend declared and paid	0	0	(124,442)	0	$ (124,442)
Purchase of treasury shares	0	0	0	(151,720)	(151,720)
Share-based compensation	0	61,505	0	0	61,505
Restricted share issuances, net of stock repurchased for payroll taxes and other	0	(21,532)	0	(6,939)	(28,471)
Balances at Dec. 31, 2021	1,671	448,217	5,621,103	(2,953,175)	3,117,816
Net earnings	0	0	969,351	0	$ 969,351
Cash dividend declared and paid per share (in dollars per share)					$ 1.6
Cash dividend declared and paid	0	0	(166,724)	0	$ (166,724)
Purchase of treasury shares	0	0	0	(300,030)	(300,030)
Share-based compensation	0	77,535	0	0	77,535
Restricted share issuances, net of stock repurchased for payroll taxes and other	0	(25,855)	0	(5,325)	(31,180)
Balances at Dec. 31, 2022	1,671	499,897	6,423,730	(3,258,530)	3,666,768
Net earnings	0	0	728,287	0	$ 728,287
Cash dividend declared and paid per share (in dollars per share)					$ 1.68
Cash dividend declared and paid	0	0	(173,898)	0	$ (173,898)
Purchase of treasury shares	0	0	0	(159,576)	(159,576)
Share-based compensation	0	79,189	0	0	79,189
Restricted share issuances, net of stock repurchased for payroll taxes and other	0	(29,954)	0	(7,058)	(37,012)
Balances at Dec. 31, 2023	$ 1,671	$ 549,132	$ 6,978,119	$ (3,425,164)	$ 4,103,758