REVENUE FROM CONTRACTS WITH CUSTOMERS - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Mar. 31, 2020
Revenue from Contract with Customer [Abstract]
Contract with liability	$ 1,023,289		$ 1,023,289		$ 806,123
Contract with liability recognized	109,713	$ 193,468	722,658	$ 758,301
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining obligation	1,134,398		1,134,398
Contract asset	105,460		105,460		$ 81,625
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining obligation	$ 1,011,585		$ 1,011,585
Remaining obligation period	12 months		12 months