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Schedule of Percentage of Net Sales by Merchandise Category (Detail)
 3 Months Ended 9 Months Ended
Oct. 31, 2017
Oct. 31, 2016
Oct. 31, 2017
Oct. 31, 2016
Entity Wide Information Revenue From External Customer [Line Items]        
Total net sales 100.00% 100.00% 100.00% 100.00%
Apparel        
Entity Wide Information Revenue From External Customer [Line Items]        
Total net sales [1] 69.00% 68.00% 69.00% 69.00%
Home        
Entity Wide Information Revenue From External Customer [Line Items]        
Total net sales [2] 14.00% 14.00% 14.00% 14.00%
Accessories        
Entity Wide Information Revenue From External Customer [Line Items]        
Total net sales [3] 12.00% 13.00% 12.00% 13.00%
Other        
Entity Wide Information Revenue From External Customer [Line Items]        
Total net sales [4] 5.00% 5.00% 5.00% 4.00%
[1] Apparel includes intimates and activewear
[2] Home includes home furnishings, electronics, gifts and decorative items
[3] Accessories includes footwear, jewelry and handbags
[4] Other includes beauty, shipping and handling revenues and the Food and Beverage division