CONSOLIDATED STATEMENTS OF STOCKHOLDERS' INVESTMENT - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	$ 1,879,933	$ 1,670,730	$ 1,595,087
Net income	844,245	506,421	576,968
Foreign currency adjustments	(15,136)	30,151	(4,214)
Dividends declared	(280,217)	(278,422)	(277,727)
Stock issued for employee benefit plans	43,949	89,803	47,977
Issuance of restricted stock, net of forfeitures	0
Issuance of restricted stock		0	0
Stock-based compensation expense	129,977	43,995	39,083
Repurchase of common stock	(580,817)	(182,745)	(306,444)
Ending Balance	$ 2,021,934	$ 1,879,933	$ 1,670,730
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance (in shares)	134,298	134,895	137,284
Beginning Balance	$ 13,430	$ 13,490	$ 13,728
Stock issued for employee benefit plans (in shares)	1,068	1,754	1,017
Stock issued for employee benefit plans	$ 107	$ 175	$ 102
Issuance of restricted stock, net of forfeitures	$ (3)
Issuance of restricted stock, net of forfeitures	(26)
Issuance of restricted stock (in shares)		192	28
Issuance of restricted stock		$ 19	$ 3
Stock-based compensation expense (in shares)	0	0	0
Stock-based compensation expense	$ 0	$ 0	$ 0
Repurchase of common stock (in shares)	(6,154)	(2,543)	(3,434)
Repurchase of common stock	$ (615)	$ (254)	$ (343)
Ending Balance (in shares)	129,186	134,298	134,895
Ending Balance	$ 12,919	$ 13,430	$ 13,490
Additional Paid-in Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	566,022	546,646	521,486
Stock issued for employee benefit plans	(22,374)	(24,600)	(13,920)
Issuance of restricted stock, net of forfeitures	3
Issuance of restricted stock		(19)	(3)
Stock-based compensation expense	129,977	43,995	39,083
Ending Balance	673,628	566,022	546,646
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	4,372,833	4,144,834	3,845,593
Net income	844,245	506,421	576,968
Dividends declared	(280,217)	(278,422)	(277,727)
Ending Balance	4,936,861	4,372,833	4,144,834
Accumulated Other Comprehensive Loss
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	(45,998)	(76,149)	(71,935)
Foreign currency adjustments	(15,136)	30,151	(4,214)
Ending Balance	(61,134)	(45,998)	(76,149)
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	(3,026,354)	(2,958,091)	(2,713,785)
Stock issued for employee benefit plans	66,216	114,228	61,795
Stock-based compensation expense	0	0	0
Repurchase of common stock	(580,202)	(182,491)	(306,101)
Ending Balance	$ (3,540,340)	$ (3,026,354)	$ (2,958,091)