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Leases - Additional Information (Detail)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 31, 2020
USD ($)
Jul. 31, 2019
USD ($)
Jul. 31, 2020
USD ($)
Store
Jul. 31, 2019
USD ($)
Leases [Abstract]        
Operating lease costs $ 69,183 $ 67,827 $ 137,193 $ 134,075
Variable lease cost 23,154 $ 31,554 51,594 $ 64,431
Lease commitments for executed but not yet commenced leases $ 17,367   $ 17,367  
Number of lease commitment not yet commenced | Store     8