ACCUMULATED OTHER COMPREHENSIVE LOSS - Changes in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ (151,163)	$ (85,845)	$ (128,143)
Other comprehensive gain (loss) before reclassifications	(64,788)	(107,810)	61,689
Net (gains) losses reclassified from accumulated other comprehensive loss	1,284	42,492	(19,391)
Net current-period other comprehensive gain (loss)	(63,504)	(65,318)	42,298
Ending balance	(214,667)	(151,163)	(85,845)
Unrealized Gain (Loss) on Derivative Instruments And Other
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(41,556)	(35,746)	(32,426)
Other comprehensive gain (loss) before reclassifications	(42,837)	(48,302)	15,667
Net (gains) losses reclassified from accumulated other comprehensive loss	2,730	42,492	(18,987)
Net current-period other comprehensive gain (loss)	(40,107)	(5,810)	(3,320)
Ending balance	(81,663)	(41,556)	(35,746)
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(109,607)	(50,099)	(95,717)
Other comprehensive gain (loss) before reclassifications	(21,951)	(59,508)	46,022
Net (gains) losses reclassified from accumulated other comprehensive loss	(1,446)	0	(404)
Net current-period other comprehensive gain (loss)	(23,397)	(59,508)	45,618
Ending balance	$ (133,004)	$ (109,607)	$ (50,099)

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Amount after tax, before reclassification adjustments, of other comprehensive income (loss), attributable to parent.

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Amount after tax of other comprehensive income (loss) attributable to parent entity.

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Amount after tax of reclassification adjustments of other comprehensive income (loss) attributable to parent.

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