Pension and Retirement Savings Plan - Weighted-average Assumptions Used to Calculate Net Periodic Pension Cost (Details)	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate	0.00%	0.00%	0.90%
Salary progression rate	1.10%	1.10%	1.10%
Expected long-term rate of return on plan assets	1.50%	1.50%	0.90%