REVENUE - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Revenue recognized	$ 96.0
Deferred revenue	359.9
Unrecognized accounts receivable and deferred revenue	8.2		$ 7.1
Capitalized contract cost	7.3		7.4
Amortization of capitalized costs to obtain contracts	1.6	$ 1.6
Prepaid Expenses and Other Current Assets
Disaggregation of Revenue [Line Items]
Capitalized contract cost	4.0		4.1
Other Assets
Disaggregation of Revenue [Line Items]
Capitalized contract cost	$ 3.3		$ 3.3
Minimum
Disaggregation of Revenue [Line Items]
Payment terms	30 days
Maximum
Disaggregation of Revenue [Line Items]
Payment terms	90 days