Consolidated Statements of Stockholders' Equity (USD $) In Thousands	Total	Common Stock	Additional Paid-In Capital	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive Loss
Balance at Dec. 31, 2010	$ 2,628,584	$ 441,369	$ 1,706,461	$ (1,880,692)	$ 2,720,645	$ (359,199)
Net Income	768,508				768,508
Other comprehensive income (loss), net of tax	(87,446)					(87,446)
Purchase of treasury stock	(536,318)			(536,318)
Issuance of treasury stock for stock option exercises	115,611		(9,758)	125,369
Issuance of treasury stock for restricted stock units vesting	(36,101)		(84,631)	48,530
Deferred compensation	150			589	(439)
Share-based compensation	53,476		53,476
Tax benefits from share-based payment arrangements	24,199		24,199
Dividend equivalents for restricted stock units	(3,557)		658		(4,215)
Dividends	(316,503)				(316,503)
Balance at Dec. 31, 2011	2,610,603	441,369	1,690,405	(2,242,522)	3,167,996	(446,645)
Net Income	776,464				776,464
Other comprehensive income (loss), net of tax	(17,841)					(17,841)
Purchase of treasury stock	(77,946)			(77,946)
Issuance of treasury stock for stock option exercises	123,092		(13,702)	136,794
Issuance of treasury stock for restricted stock units vesting	(19,154)		(49,385)	30,231
Deferred compensation	160			741	(581)
Share-based compensation	63,277		63,277
Tax benefits from share-based payment arrangements	35,798		35,798
Dividend equivalents for restricted stock units	(4,031)		1,289		(5,320)
Dividends	(423,378)				(423,378)
Balance at Dec. 31, 2012	3,067,044	441,369	1,727,682	(2,152,702)	3,515,181	(464,486)
Net Income	903,944				903,944
Other comprehensive income (loss), net of tax	20,810					20,810
Purchase of treasury stock	(469,218)			(469,218)
Issuance of treasury stock for stock option exercises	134,747		(17,531)	152,278
Issuance of treasury stock for restricted stock units vesting	(18,962)		(39,293)	20,331
Deferred compensation	20			610	(590)
Share-based compensation	61,651		61,651
Tax benefits from share-based payment arrangements	50,374		50,374
Dividend equivalents for restricted stock units	(4,480)		1,562		(6,042)
Dividends	(494,371)				(494,371)
Balance at Dec. 31, 2013	$ 3,251,559	$ 441,369	$ 1,784,445	$ (2,448,701)	$ 3,918,122	$ (443,676)