FINANCIAL INSTRUMENTS - Foreign Currency Risk Management (Details) - Foreign currency contracts - USD ($) $ in Thousands	Dec. 31, 2020	Mar. 31, 2020
Other current assets | Derivatives designated as hedging instruments
Fair Values of Derivative Instruments
Asset Derivatives	$ 53,000	$ 7,000
Other current assets | Derivatives not designated as hedging instruments
Fair Values of Derivative Instruments
Asset Derivatives	32,000	83,000
Other assets | Derivatives designated as hedging instruments
Fair Values of Derivative Instruments
Asset Derivatives	23,000	14,000
Other current liabilities | Derivatives designated as hedging instruments
Fair Values of Derivative Instruments
Liability Derivatives	8,000	47,000
Other current liabilities | Derivatives not designated as hedging instruments
Fair Values of Derivative Instruments
Liability Derivatives	31,000	103,000
Other liabilities | Derivatives designated as hedging instruments
Fair Values of Derivative Instruments
Liability Derivatives	$ 0	$ 0