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Acquisitions - Additional Information (Detail)
$ in Millions
3 Months Ended 9 Months Ended
Aug. 03, 2015
USD ($)
Oct. 31, 2015
USD ($)
Oct. 31, 2015
Business Acquisition [Line Items]      
Payments to Acquire Businesses, Gross   $ 1  
Business Combination, Purchase Price Allocation, Additional Payment   $ 1  
Number Of Stores Acquired Through Business Acquisition     10
Futura Sport AG [Member]      
Business Acquisition [Line Items]      
Business Combination, Consideration Transferred, Total $ 2