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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, 2019
Jan. 31, 2018
Jan. 31, 2017
Segment Reporting Information [Line Items]      
Total net sales $ 3,950,623 $ 3,616,014 $ 3,545,794
Total property and equipment, net 796,029 813,768  
Domestic Operations      
Segment Reporting Information [Line Items]      
Total net sales 3,449,913 3,163,074 3,114,014
Total property and equipment, net 723,400 720,890  
Foreign Operations      
Segment Reporting Information [Line Items]      
Total net sales 500,710 452,940 $ 431,780
Total property and equipment, net $ 72,629 $ 92,878