LEASES - Other information (Details) $ in Millions	12 Months Ended
	Jan. 31, 2020 USD ($)
Leases [Abstract]
Weighted average remaining lease term	5 years 2 months 12 days
Weighted average discount rate	7.80%
Cash paid for amounts included in the measurement of operating lease liabilities	$ 100.8
Right-of-use assets obtained in exchange for lease obligations	$ 27.0