ACCUMULATED OTHER COMPREHENSIVE LOSS - Changes in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Changes in Accumulated Other Comprehensive Income by Component
Beginning balance	$ (180,505)	$ (126,156)	$ (77,481)
Other comprehensive loss before reclassifications	(5,344)	(85,788)	(50,534)
Net losses reclassified from accumulated other comprehensive loss	49,934	31,439	1,859
Net current-period other comprehensive gain	44,590	(54,349)	(48,675)
Ending balance	(135,915)	(180,505)	(126,156)
Unrealized loss on derivative instruments and other
Changes in Accumulated Other Comprehensive Income by Component
Beginning balance	(68,266)	(32,849)	(18,857)
Other comprehensive loss before reclassifications	(2,199)	(76,470)	(15,851)
Net losses reclassified from accumulated other comprehensive loss	28,943	41,053	1,859
Net current-period other comprehensive gain	26,744	(35,417)	(13,992)
Ending balance	(41,522)	(68,266)	(32,849)
Foreign currency translation adjustments
Changes in Accumulated Other Comprehensive Income by Component
Beginning balance	(112,239)	(93,307)	(58,624)
Other comprehensive loss before reclassifications	(3,145)	(9,318)	(34,683)
Net losses reclassified from accumulated other comprehensive loss	20,991	(9,614)	0
Net current-period other comprehensive gain	17,846	(18,932)	(34,683)
Ending balance	$ (94,393)	$ (112,239)	$ (93,307)