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Schedule of Net Sales and Percentage of Net Sales by Merchandise Category (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Apr. 30, 2018
Apr. 30, 2017
Entity Wide Information Revenue From External Customer [Line Items]    
Total net sales $ 855,688 $ 761,190
Total net sales, percentage 100.00% 100.00%
Apparel    
Entity Wide Information Revenue From External Customer [Line Items]    
Total net sales [1] $ 599,688 $ 520,119
Total net sales, percentage [1] 70.00% 68.00%
Home    
Entity Wide Information Revenue From External Customer [Line Items]    
Total net sales [2] $ 114,348 $ 111,980
Total net sales, percentage [2] 13.00% 15.00%
Accessories    
Entity Wide Information Revenue From External Customer [Line Items]    
Total net sales [3] $ 98,775 $ 89,602
Total net sales, percentage [3] 12.00% 12.00%
Other    
Entity Wide Information Revenue From External Customer [Line Items]    
Total net sales [4] $ 42,877 $ 39,489
Total net sales, percentage [4] 5.00% 5.00%
[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