DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Mar. 31, 2018
Derivative [Line Items]
Forward contracts to sell foreign currencies	$ 273,470		$ 273,470		$ 67,580
Forward contracts to purchase foreign currencies	41,347		41,347		$ 4,359
Derivative instrument not designated as hedging instruments, gain (loss), net	10,811	$ (620)	12,968	$ (15,325)
Cash Flow Hedging | Foreign currency forward contracts
Derivative [Line Items]
Derivative, notional amount	$ 129,000		$ 129,000