REVENUE RECOGNITION Revenue Recognition Narrative (Details) - Helicopter Service Contracts [Member]	9 Months Ended
	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Revenue Recognition, Period of Service	30 days
Low
Disaggregation of Revenue [Line Items]
Revenue Recognition, Invoicing Payment Due Period	30 days
High
Disaggregation of Revenue [Line Items]
Revenue Recognition, Invoicing Payment Due Period	60 days