INCOME TAXES - Reconciliation of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Reconciliation of Unrecognized Tax Benefits
Balance, beginning of fiscal year	$ 203,323	$ 212,326
Additions based on tax position related to the current year	24,415	29,007
Additions for tax positions of prior years	5,926	9,728
Reductions for tax positions of prior years	(11,936)	(22,065)
Reductions related to lapse of applicable statute of limitations	(9,029)	(13,390)
Settlements	0	(3,684)
Increase from foreign exchange rates fluctuation	14,891
Decrease from impact from foreign exchange rates fluctuation		(8,599)
Balance, end of fiscal year	227,590	203,323	$ 212,326
Unrecognized tax benefits affect annual effective tax rate if benefits eventually recognized	210,700
Interest and penalties recognized	(3,300)	(1,600)	(2,400)
Amount accrued for the payment of interest	16,200	$ 12,900	$ 14,600
Minimum
Reconciliation of Unrecognized Tax Benefits
Increase in unrecognized tax benefit	11,000
Maximum
Reconciliation of Unrecognized Tax Benefits
Increase in unrecognized tax benefit	$ 41,000

The amount of estimated penalties and interest accrued as of the balance sheet date arising from income tax examinations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319

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The sum of the amounts of estimated penalties and interest recognized in the period arising from income tax examinations.

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Amount of increase reasonably possible in the next twelve months for the unrecognized tax benefit.

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

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Amount of unrecognized tax benefits.

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Amount of decrease in unrecognized tax benefits resulting from foreign currency translation.

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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