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Basis of Presentation (Details)
3 Months Ended 6 Months Ended 12 Months Ended
Aug. 04, 2012
May 05, 2012
Jul. 30, 2011
Aug. 04, 2012
Jul. 30, 2011
Mar. 03, 2012
Organization, Consolidation and Presentation of Financial Statements [Abstract]            
Reporting period lag for consolidation of financial results   1 month   1 month   2 months
Number of Weeks in Fiscal Quarter P13W   P13W      
Number of Weeks in First Six Months       P27W P26W