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Other Information Related to Leases (Detail) - USD ($)
$ in Thousands
12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Cash paid for amounts included in the measurement of lease liabilities:    
Operating cash flows from operating leases $ 247,539 $ 295,658
Right-of-use assets obtained in exchange for new operating lease liabilities $ 149,586 $ 106,131
Weighted-average remaining lease term - operating leases 7 years 7 years 4 months 24 days
Weighted-average discount rate - operating leases 6.10% 6.30%