REVENUE Deferred Revenue (Details) - USD ($)	9 Months Ended
	Oct. 31, 2021	Oct. 31, 2020	Jan. 31, 2021
Deferred Revenue Arrangement [Line Items]
Deferred Revenue, Revenue Recognized	$ 55,800,000	$ 40,900,000
Deferred Revenue from Contracts with Customers [Member]
Deferred Revenue Arrangement [Line Items]
Deferred Revenue	$ 34,100,000		$ 57,700,000