CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]
Beginning Balance, Stockholders' Equity at Jan. 30, 2011	$ 3,181,462	$ 677	$ 2,500,577	$ (1,479,392)	$ 10,272	$ 2,149,328
Beginning Common Stock, Shares, Outstanding at Jan. 30, 2011		588,555,701
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other Comprehensive Income (Loss)	342				342
Net income	581,090		0	0		581,090
Issuance of common stock, shares		24,753,362
Stock Issued, Value	213,369	23	213,346
Shares Paid for Tax Withholding for Share Based Compensation		(1,117,651)
Adjustments Related to Tax Withholding for Share-based Compensation	(17,512)			(17,512)
Tax benefit from stock options	50,475		50,475
Payments for Hedge	0
Proceeds from Issuance of Warrants	0
Stock-based Compensation	136,498		136,498
Ending Balance, Stockholders' Equity at Jan. 29, 2012	4,145,724	700	2,900,896	(1,496,904)	10,614	2,730,418
Ending Common Stock, Shares, Outstanding at Jan. 29, 2012		612,191,412
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other Comprehensive Income (Loss)	(633)				(633)
Net income	562,536					562,536
Issuance of common stock, shares		14,800,959
Stock Issued, Value	90,741	20	90,721	0
Shares Paid for Tax Withholding for Share Based Compensation		(1,836,097)
Adjustments Related to Tax Withholding for Share-based Compensation	(25,805)			(25,805)
Tax benefit from stock options	64,905		64,905
Stock Repurchased, Shares		(8,400,140)
Cash Dividends, declared and paid	(46,866)					(46,866)
Stock Repurchased, Value	(100,000)			(100,000)
Payments for Hedge	0
Proceeds from Issuance of Warrants	0
Stock-based Compensation	137,101		137,101
Ending Balance, Stockholders' Equity at Jan. 27, 2013	4,827,703	720	3,193,623	(1,622,709)	9,981	3,246,088
Ending Common Stock, Shares, Outstanding at Jan. 27, 2013	616,756,134	616,756,134
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other Comprehensive Income (Loss)	(5,104)				(5,104)
Net income	439,990					439,990
Issuance of common stock, shares		15,088,872
Stock Issued, Value	97,454	12	97,442	0
Shares Paid for Tax Withholding for Share Based Compensation	(1,944,391)
Adjustments Related to Tax Withholding for Share-based Compensation	(27,282)			(27,282)
Tax benefit from stock options	23,827		23,827
Stock Repurchased, Shares		(61,903,881)
Cash Dividends, declared and paid	(181,336)					(181,336)
Stock Repurchased, Value	(887,304)			(887,304)
Debt Instrument, Convertible, Carrying Amount of Equity Component	125,725		125,725
Payments for Hedge	(167,100)		(167,100)
Proceeds from Issuance of Warrants	59,100		59,100
Deferred tax asset - Convertible notes (SOSE)	14,481		14,481
Stock-based Compensation	136,244		136,244
Ending Balance, Stockholders' Equity at Jan. 26, 2014	$ 4,456,398	$ 732	$ 3,483,342	$ (2,537,295)	$ 4,877	$ 3,504,742
Ending Common Stock, Shares, Outstanding at Jan. 26, 2014	567,996,734	567,996,734