Stockholders' Equity (Details) (USD $)	12 Months Ended
	Jan. 29, 2012	Jan. 30, 2011	Jan. 31, 2010
Aggregate maximum amount of common stock to be repurchased	$ 2,700,000,000
Aggregate number of shares repurchased under stock repurchase program (in shares)	90,900,000
Treasury Stock, Value, Acquired, Cost Method	1,460,000,000
Authorized cost of shares to be repurchased	1,240,000,000
Shares Paid for Tax Withholding for Share Based Compensation			(39)
Adjustments Related to Tax Withholding for Share-based Compensation	$ (17,512,000)	$ (16,124,000)
Common Stock [Member]
Shares Paid for Tax Withholding for Share Based Compensation	(1,117,651)	(1,117,179)