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Financial Instruments - Additional Information (Detail)
9 Months Ended
Nov. 02, 2013
Diesel Fuel Contracts for Remainder of Fiscal 2014
 
Derivative Instruments, Gain (Loss) [Line Items]  
Hedge of diesel fuel requirement 49.00%
Diesel Fuel Contracts for First Nine Months of Fiscal 2015
 
Derivative Instruments, Gain (Loss) [Line Items]  
Hedge of diesel fuel requirement 24.00%