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Schedule of Revenues and Long-Lived Assets, by Domestic and Foreign Operations 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
Total property and equipment, net 867,786 863,137  
Domestic Operations      
Segment Reporting Information [Line Items]      
Total net sales 3,114,014 3,005,595 2,870,140
Total property and equipment, net 766,419 742,171  
Foreign Operations      
Segment Reporting Information [Line Items]      
Total net sales 431,780 439,539 $ 452,937
Total property and equipment, net $ 101,367 $ 120,966