DEBT - Debt Covenants (Details)	12 Months Ended
	Jun. 30, 2018
June 30, 2018
Debt Instrument [Line Items]
Total net leverage ratio	5.50
September 30, 2018 through December 31, 2018
Debt Instrument [Line Items]
Total net leverage ratio	5.5
March 31, 2019 through June 30, 2019
Debt Instrument [Line Items]
Total net leverage ratio	5.25
September 30, 2019 through December 31, 2019
Debt Instrument [Line Items]
Total net leverage ratio	5
March 31, 2020 through June 30, 2020
Debt Instrument [Line Items]
Total net leverage ratio	4.75
September 30, 2020 through December 31, 2020
Debt Instrument [Line Items]
Total net leverage ratio	4.5
March 31, 2021 through June 30, 2021
Debt Instrument [Line Items]
Total net leverage ratio	4.25
September 30, 2021 through June 30, 2023
Debt Instrument [Line Items]
Total net leverage ratio	4.00