BALANCE SHEET ITEMS - Additional Information (Details) $ in Millions	9 Months Ended
	Dec. 31, 2020 USD ($) reportingUnit	Mar. 31, 2020 USD ($)
Components of acquired intangible assets
Number of reporting units | reportingUnit	6
Contract liabilities	$ 483.4	$ 361.5
Current operating lease liabilities	125.2	114.1
Working capital advances
Components of acquired intangible assets
Contract liabilities	371.3	264.2
Customer-related accruals
Components of acquired intangible assets
Contract liabilities	$ 242.7	$ 195.1