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Schedule of Revenues and Long-Lived Assets, by Domestic and Foreign Operations Segment (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jul. 31, 2021
Jul. 31, 2020
Jul. 31, 2021
Jul. 31, 2020
Jan. 31, 2021
Segment Reporting Information [Line Items]          
Total property and equipment, net $ 1,047,751 $ 889,126 $ 1,047,751 $ 889,126 $ 967,422
Total net sales 1,157,725 803,266 2,085,140 1,391,749  
Domestic Operations          
Segment Reporting Information [Line Items]          
Total property and equipment, net 844,912 722,934 844,912 722,934 768,440
Total net sales 998,580 709,697 1,825,375 1,233,253  
Foreign Operations          
Segment Reporting Information [Line Items]          
Total property and equipment, net 202,839 166,192 202,839 166,192 $ 198,982
Total net sales $ 159,145 $ 93,569 $ 259,765 $ 158,496