BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Details) $ in Thousands	3 Months Ended		9 Months Ended			12 Months Ended
	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2018 USD ($) label	Dec. 31, 2017 USD ($)		Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Wholly-owned labels | label			2
Net cash provided by operating activities increase			$ 390,199	$ 241,073	[1]
Accounting Standards Update 2016-18
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net cash provided by operating activities increase	$ (196,814)	$ 36,988				$ 99,580	$ 76,649
Accounting Standards Update 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect		$ 470,273		$ 470,273
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimated service period			9 months
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimated service period			15 months

[1] Prior period amounts have been adjusted retrospectively to reflect the adoption of ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash. Refer to Note 1 for further discussion.