SEGMENTS - Narrative (Details) $ in Millions	12 Months Ended
	Jun. 30, 2018 USD ($) segment	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)
Segment Reporting [Abstract]
Business Combination Provisional Information Initial Accounting Incomplete Adjustment Deferred Revenue | $	$ (0.3)	$ (0.6)	$ (5.6)
Number of reportable segments | segment	2
Nonrecurring expenses, period not incurred	2 years
Nonrecurring expenses, period not expected to recur	2 years