FOREIGN CURRENCY DERIVATIVES (Details 6) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Gain (Loss) Included in Accumulated Other Comprehensive Income [Roll Forward]
Gain (loss) included in AOCI as of beginning of period	$ (14,995)	$ 1,935	$ (7,480)	$ (1,693)
Amount of gain (loss) recognized in other comprehensive income (“OCI”) (effective portion)	2,369	813	(4,335)	4,769
Amount of (gain) loss reclassified from OCI into net revenues (effective portion)	461,709	483,069	909,476	704,378
Amount of (gain) loss reclassified from OCI into cost of revenues (effective portion)	(255,638)	(330,440)	(490,759)	(441,906)
Amount of (gain) loss reclassified from OCI into interest expense (effective portion)	(23,797)	(23,893)	(47,729)	(31,220)
Gain (loss) included in AOCI as of end of period	(13,311)	2,825	(13,311)	2,825
Reclassification out of Accumulated Other Comprehensive Income [Member]
Gain (Loss) Included in Accumulated Other Comprehensive Income [Roll Forward]
Amount of (gain) loss reclassified from OCI into net revenues (effective portion)	(1,568)	(900)	(2,927)	(1,149)
Amount of (gain) loss reclassified from OCI into cost of revenues (effective portion)	(62)	0	(166)	(79)
Amount of (gain) loss reclassified from OCI into interest expense (effective portion)	945	977	1,597	977
Total amount of (gain) loss reclassified from AOCI to income (loss) (effective portion)	$ (685)	$ 77	$ (1,496)	$ (251)