Basis of Presentation (Details)	6 Months Ended	12 Months Ended
	Jul. 30, 2011	Jan. 28, 2012 week	Jan. 29, 2011 week	Jan. 30, 2010 week	Jan. 31, 2009 week	Feb. 02, 2008 week	Feb. 03, 2007 week
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Operating cycle	52-53 week
Fiscal year end date		January 28, 2012	January 29, 2011	January 30, 2010	January 31, 2009	February 2, 2008	February 3, 2007
Number of weeks in each fiscal year		52	52	52	52	52	53