SEGMENT INFORMATION - Additional Information (Details)	3 Months Ended	12 Months Ended
	Sep. 30, 2017 segment	Jun. 30, 2018 segment store	Jun. 30, 2017 segment
Segment Reporting Information [Line Items]
Number of reportable segments | segment	2	2	4
North American Value
Segment Reporting Information [Line Items]
Number of stores		3,966
International salons | Franchised Units
Segment Reporting Information [Line Items]
Number of stores		4,114