REVENUE - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Revenue recognized	$ 91.1
Deferred revenue	349.5
Unrecognized accounts receivable and deferred revenue	10.7		$ 11.1
Capitalized contract cost	7.7		7.2
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	4.4		3.9
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