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Property and Equipment (Parenthetical) (Detail) (USD $)
In Thousands, unless otherwise specified
Feb. 03, 2013
Jan. 29, 2012
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 2,094,942 $ 1,934,477
New Inventory And Order Management System Currently Under Development
   
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 39,700 $ 48,200