GOODWILL AND INTANGIBLE ASSETS - Narrative (Details)	3 Months Ended			6 Months Ended	9 Months Ended
	Dec. 31, 2019 USD ($) reporting_unit	Sep. 30, 2019 reporting_unit	Dec. 31, 2018 USD ($)	Sep. 30, 2019 reporting_unit	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Mar. 31, 2019 USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]
Number of reporting units | reporting_unit	1	2		2
Impairment of intangible assets	$ 0		$ 0		$ 0	$ 35,871,000
Goodwill	1,718,496,000				1,718,496,000		$ 1,715,485,000
Carrying value of intangible assets	602,856,000				$ 602,856,000		669,118,000
Weighted average useful life of acquired intangible assets					14 years 7 months 6 days
Developed and core technology
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average useful life of acquired intangible assets					11 years 3 months 18 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 7 months 6 days
Capitalized software
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average useful life of acquired intangible assets					3 years
Trade name
Acquired Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	$ 18,600,000				$ 18,600,000		$ 18,600,000