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Schedule of Operations by Segment (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2017
Jan. 31, 2016
Jan. 31, 2015
Segment Reporting Information [Line Items]      
Total net sales $ 3,545,794 $ 3,445,134 $ 3,323,077
General corporate expenses (44,694) (42,654) (43,265)
Total income from operations 338,527 353,579 365,385
Total depreciation expense for property and equipment 133,130 138,881 131,414
Total inventory 338,590 330,223  
Total property and equipment, net 867,786 863,137  
Total cash paid for property and equipment 143,714 134,950 229,804
Operating Segments      
Segment Reporting Information [Line Items]      
Total income from operations 383,221 396,233 408,650
Operating Segments | Retail Operations      
Segment Reporting Information [Line Items]      
Total net sales 3,256,890 3,184,955 3,097,274
Total income from operations 325,666 342,885 354,326
Total depreciation expense for property and equipment 132,150 137,963 130,383
Total inventory 301,519 289,170  
Total property and equipment, net 864,396 859,277  
Total cash paid for property and equipment 142,872 134,627 228,682
Operating Segments | Wholesale Operations      
Segment Reporting Information [Line Items]      
Total net sales 298,566 273,603 237,491
Total income from operations 58,169 54,444 55,403
Total depreciation expense for property and equipment 980 918 1,031
Total inventory 37,071 41,053  
Total property and equipment, net 3,390 3,860  
Total cash paid for property and equipment 842 323 1,122
Intersegment Elimination      
Segment Reporting Information [Line Items]      
Total net sales (9,662) (13,424) (11,688)
Total income from operations $ (614) $ (1,096) $ (1,079)