Shareholders' Equity - Share Repurchase Program (Details) (USD $) Share data in Thousands, unless otherwise specified	6 Months Ended				1 Months Ended	3 Months Ended	1 Months Ended	3 Months Ended
	Jul. 28, 2012	Jan. 28, 2012	Jul. 30, 2011	Jul. 28, 2012 Common Stock [Member]	May 31, 2011 2011 Repurchase Program [Member] Common Stock [Member]	Apr. 28, 2012 2011 Repurchase Program [Member] Common Stock [Member]	May 31, 2012 2012 Repurchase Program [Member] Common Stock [Member]	Jul. 28, 2012 2012 Repurchase Program [Member] Common Stock [Member]
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Authorized Amount					$ 400,000,000		$ 200,000,000
Stock Repurchased During Period, Shares				6,500		2,500		4,000
Stock Repurchased During Period, Value	252,759,000	123,303,000	240,654,000	247,200,000		98,500,000		148,700,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount								$ 51,300,000