Consolidated Statements of Stockholders' Equity Statement (USD $) In Thousands, unless otherwise specified	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]
Balance, Value at Jan. 30, 2010	$ 1,157,293	$ 2,458	$ 680,679	$ (36,864)	$ 170	$ 510,850
Balance, Shares at Jan. 30, 2010		245,858
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	554,797					554,797
Unrealized investment gain (loss), net	318				318
Common stock issued under stock plans, net of shares used for tax withholding, Shares		3,728
Common stock issued under stock plans, net of shares used for tax withholding, Value	26,936	38	36,442	(9,544)
Tax benefit from equity issuance	15,412		15,412
Stock-based compensation	36,551		36,551
Common stock repurchased, Shares		(13,460)
Common stock repurchased, Value	(375,000)	(134)	(29,539)			(345,327)
Dividends declared	(83,615)					(83,615)
Balance, Value at Jan. 29, 2011	1,332,692	2,362	739,545	(46,408)	488	636,705
Balance, Shares at Jan. 29, 2011		236,126
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	657,170					657,170
Unrealized investment gain (loss), net	147				147
Common stock issued under stock plans, net of shares used for tax withholding, Shares		2,002
Common stock issued under stock plans, net of shares used for tax withholding, Value	1,436	20	17,270	(15,854)
Tax benefit from equity issuance	19,040		19,040
Stock-based compensation	40,404		40,404
Common stock repurchased, Shares		(11,264)
Common stock repurchased, Value	(450,000)	(113)	(27,364)			(422,523)
Dividends declared	(107,877)					(107,877)
Balance, Value at Jan. 28, 2012	1,493,012	2,269	788,895	(62,262)	635	763,475
Balance, Shares at Jan. 28, 2012		226,864
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	786,763					786,763
Unrealized investment gain (loss), net	(50)				(50)
Common stock issued under stock plans, net of shares used for tax withholding, Shares		1,315
Common stock issued under stock plans, net of shares used for tax withholding, Value	(10,403)	13	19,030	(29,446)
Tax benefit from equity issuance	29,989		29,989
Stock-based compensation	48,952		48,952
Common stock repurchased, Shares		(7,458)
Common stock repurchased, Value	(450,000)	(75)	(20,347)			(429,578)
Dividends declared	(131,400)					(131,400)
Balance, Value at Feb. 02, 2013	$ 1,766,863	$ 2,207	$ 866,519	$ (91,708)	$ 585	$ 989,260
Balance, Shares at Feb. 02, 2013		220,721