ACCUMULATED OTHER COMPREHENSIVE LOSS - Changes in AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ (122,552)	$ (200,704)	$ (135,915)	$ (180,505)
Other comprehensive gain (loss) before reclassifications	(35,124)	15,165	(20,502)	(26,890)
Net (gains) losses reclassified from accumulated other comprehensive loss	(1,489)	25,395	(2,748)	47,251
Net current-period other comprehensive gain (loss)	(36,613)	40,560	(23,250)	20,361
Ending balance	(159,165)	(160,144)	(159,165)	(160,144)
Unrealized loss on derivative instruments and other
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(42,233)	(60,981)	(41,522)	(68,266)
Other comprehensive gain (loss) before reclassifications	(1,354)	5,941	(1,031)	(8,478)
Net (gains) losses reclassified from accumulated other comprehensive loss	1,153	4,556	119	26,260
Net current-period other comprehensive gain (loss)	(201)	10,497	(912)	17,782
Ending balance	(42,434)	(50,484)	(42,434)	(50,484)
Foreign currency translation adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(80,319)	(139,723)	(94,393)	(112,239)
Other comprehensive gain (loss) before reclassifications	(33,770)	9,224	(19,471)	(18,412)
Net (gains) losses reclassified from accumulated other comprehensive loss	(2,642)	20,839	(2,867)	20,991
Net current-period other comprehensive gain (loss)	(36,412)	30,063	(22,338)	2,579
Ending balance	$ (116,731)	$ (109,660)	$ (116,731)	$ (109,660)