GOODWILL AND INTANGIBLE ASSETS - Narrative (Details) $ in Thousands	6 Months Ended
	Sep. 30, 2021 USD ($) reporting_unit	Mar. 31, 2021 USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]
Number of reporting units | reporting_unit	1
Goodwill	$ 1,717,870	$ 1,717,554
Carrying value of intangible assets	$ 474,448	511,866
Weighted average useful life of acquired intangible assets	14 years 7 months 6 days
Cost	$ 1,109,451	1,091,217
Trade Name
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets	$ 18,600
Weighted average useful life of acquired intangible assets	8 years
Developed and Core Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average useful life of acquired intangible assets	11 years 2 months 12 days
Customer and Distributor Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average useful life of acquired intangible assets	15 years 10 months 24 days
Trademarks and Trade Names
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average useful life of acquired intangible assets	8 years 4 months 24 days
Cost	$ 58,021	39,434
Capitalized Software
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average useful life of acquired intangible assets	3 years
Cost	$ 3,317	3,317
Trade Name
Acquired Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets carrying value		$ 18,600