STOCK-BASED COMPENSATION - Schedule of Weighted Average Fair Values (Details) - $ / shares	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
SARs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair values per stock based compensation award granted (in dollars per share)	$ 0	$ 0	$ 3.68
RSAs & RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair values per stock based compensation award granted (in dollars per share)	21.12	13.43	11.73
PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair values per stock based compensation award granted (in dollars per share)	$ 14.05	$ 15.74	$ 12.28