ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 2,805,961	$ 3,169,547	$ 2,972,360	$ 3,018,573
Other comprehensive gain (loss) before reclassifications	12,577	(22,460)	(17,877)	(113,881)
Net (gains) losses reclassified from accumulated other comprehensive loss	10,662	19,318	2,515	40,203
Net current-period other comprehensive gain (loss)	23,239	(3,142)	(15,362)	(73,678)
Ending balance	2,899,312	3,078,328	2,899,312	3,078,328
Unrealized loss on derivative instruments and other
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(58,654)	(55,574)	(41,556)	(35,746)
Other comprehensive gain (loss) before reclassifications	1,134	(14,683)	(7,817)	(55,396)
Net (gains) losses reclassified from accumulated other comprehensive loss	12,108	19,318	3,961	40,203
Net current-period other comprehensive gain (loss)	13,242	4,635	(3,856)	(15,193)
Ending balance	(45,412)	(50,939)	(45,412)	(50,939)
Foreign currency translation adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(131,110)	(100,807)	(109,607)	(50,099)
Other comprehensive gain (loss) before reclassifications	11,443	(7,777)	(10,060)	(58,485)
Net (gains) losses reclassified from accumulated other comprehensive loss	(1,446)	0	(1,446)	0
Net current-period other comprehensive gain (loss)	9,997	(7,777)	(11,506)	(58,485)
Ending balance	(121,113)	(108,584)	(121,113)	(108,584)
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(189,764)	(156,381)	(151,163)	(85,845)
Ending balance	$ (166,525)	$ (159,523)	$ (166,525)	$ (159,523)