Leases - Summary of Weighted-Average Remaining Lease Term and Weighted-Average Discount Rate (Details)	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Leases [Abstract]
Operating leases, Weighted-average remaining lease term	6 years 2 months 12 days	6 years 6 months	7 years 4 months 24 days
Finance leases, Weighted-average remaining lease term	4 months 24 days	1 year 4 months 24 days	2 years 4 months 24 days
Operating leases, Weighted-average discount rate	3.90%	3.78%	3.71%
Finance leases, Weighted-average discount rate	3.86%	3.86%	3.86%