REVENUE AND CONTRACT BALANCES - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2025	Jul. 31, 2024	Jan. 31, 2025
Disaggregation of Revenue [Line Items]
Unbilled receivables, current	$ 8.9		$ 8.9		$ 5.5
Contract with customer, liability	546.8		546.8		$ 572.1
Contract with customer, liability, revenue recognized	181.2	$ 155.5	317.2	$ 262.2
Revenue, remaining performance obligation, amount	$ 1,200.0		$ 1,200.0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-08-01
Disaggregation of Revenue [Line Items]
Revenue, remaining performance obligation, percentage	85.00%		85.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period	24 months		24 months
Minimum
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, contract term			1 year
Maximum
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, contract term			3 years