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Schedule of Operations by Segment (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2016
Jan. 31, 2015
Jan. 31, 2014
Segment Reporting Information [Line Items]      
Total net sales $ 3,445,134 $ 3,323,077 $ 3,086,608
General corporate expenses (42,654) (43,265) (29,257)
Total income from operations 353,579 365,385 426,831
Total depreciation expense for property and equipment 138,881 131,414 121,732
Total inventory 330,223 358,237  
Total property and equipment, net 863,137 889,232  
Total cash paid for property and equipment 134,950 229,804 186,101
Operating Segments      
Segment Reporting Information [Line Items]      
Total income from operations 396,233 408,650 456,088
Operating Segments | Retail Operations      
Segment Reporting Information [Line Items]      
Total net sales 3,184,955 3,097,274 2,908,981
Total income from operations 342,885 354,326 414,734
Total depreciation expense for property and equipment 137,963 130,383 120,960
Total inventory 289,170 314,940  
Total property and equipment, net 859,277 885,200  
Total cash paid for property and equipment 134,627 228,682 184,255
Operating Segments | Wholesale Operations      
Segment Reporting Information [Line Items]      
Total net sales 273,603 237,491 185,792
Total income from operations 54,444 55,403 42,191
Total depreciation expense for property and equipment 918 1,031 772
Total inventory 41,053 43,297  
Total property and equipment, net 3,860 4,032  
Total cash paid for property and equipment 323 1,122 1,846
Intersegment Elimination      
Segment Reporting Information [Line Items]      
Total net sales (13,424) (11,688) (8,165)
Total income from operations $ (1,096) $ (1,079) $ (837)