Stock Repurchase Program (Details) (USD $)	3 Months Ended	6 Months Ended
	Jul. 30, 2011	Jul. 30, 2011	Jan. 29, 2011
Equity, Class of Treasury Stock [Line Items]
Amount authorized under stock repurchase program		$ 250,000,000
Shares of common stock repurchased during the period (in shares)	240,405	972,952
Shares acquired from holders of restricted stock unit awards to satisfy tax withholding requirements (in shares)		36,352
Value of common stock repurchased during current period	9,400,000	33,100,000
Value of tax withholding payments related to shares acquired from holders of restricted stock unit awards		1,100,000
Value of shares of common stock remaining available for repurchase under the program		180,200,000
Shares of common stock repurchased to date (in shares)	10,195,990	10,195,990	9,223,038
Value of common stock repurchased to date	237,883,000	237,883,000	204,803,000
Under August 2004 Authorization [Member]
Equity, Class of Treasury Stock [Line Items]
Shares of common stock repurchased to date (in shares)	7,761,813	7,761,813
Value of common stock repurchased to date	$ 166,900,000	$ 166,900,000