Nominal or face amount used to calculate payment on derivative.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959

Name:	us-gaap_DerivativeNotionalAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

FOREIGN CURRENCY DERIVATIVES (Details 4) € in Millions, £ in Millions	Sep. 30, 2019 EUR (€)	Sep. 30, 2019 GBP (£)	Mar. 31, 2019 EUR (€)	Mar. 31, 2019 GBP (£)
Option contracts [Member]
Derivative [Line Items]
Notional amount of contracts	€ 70.7	£ 24.7	€ 76.8	£ 25.8
Forward contracts [Member]
Derivative [Line Items]
Notional amount of contracts	€ 69.2	£ 23.9	€ 55.4	£ 18.0