Consolidated Statements of Stockholders' Equity Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]
Balance, shares at Feb. 02, 2013		441,442
Balance, value at Feb. 02, 2013	$ 1,766,863	$ 4,414	$ 864,312	$ (91,708)	$ 585	$ 989,260
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	837,304					837,304
Unrealized investment gain (loss), net	(196)				(196)
Common stock issued under stock plans, net of shares used for tax withholding, shares		1,756
Common stock issued under stock plans, net of shares used for tax withholding, value	(10,777)	$ 18	19,056	(29,851)
Tax benefit from equity issuance	27,661		27,661
Stock-based compensation	46,847		46,847
Common stock repurchased, shares		(16,358)
Common stock repurchased, value	(550,000)	$ (164)	(24,419)			(525,417)
Dividends declared	(110,400)					(110,400)
Balance, shares at Feb. 01, 2014		426,840
Balance, value at Feb. 01, 2014	2,007,302	$ 4,268	933,457	(121,559)	389	1,190,747
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	924,724					924,724
Unrealized investment gain (loss), net	(59)				(59)
Common stock issued under stock plans, net of shares used for tax withholding, shares		2,904
Common stock issued under stock plans, net of shares used for tax withholding, value	(17,063)	$ 29	21,949	(39,041)
Tax benefit from equity issuance	29,759		29,759
Stock-based compensation	53,001		53,001
Common stock repurchased, shares		(14,805)
Common stock repurchased, value	(550,000)	$ (148)	(24,559)			(525,293)
Dividends declared	(168,454)					(168,454)
Balance, shares at Jan. 31, 2015		414,939
Balance, value at Jan. 31, 2015	2,279,210	$ 4,149	1,013,607	(160,600)	330	1,421,724
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	1,020,661					1,020,661
Unrealized investment gain (loss), net	(148)				(148)
Common stock issued under stock plans, net of shares used for tax withholding, shares		1,053
Common stock issued under stock plans, net of shares used for tax withholding, value	(48,739)	$ 11	20,175	(68,925)
Tax benefit from equity issuance	42,382		42,382
Stock-based compensation	70,937		70,937
Common stock repurchased, shares		(13,653)
Common stock repurchased, value	(700,000)	$ (137)	(24,772)			(675,091)
Dividends declared	(192,312)					(192,312)
Balance, shares at Jan. 30, 2016		402,339
Balance, value at Jan. 30, 2016	$ 2,471,991	$ 4,023	$ 1,122,329	$ (229,525)	$ 182	$ 1,574,982