INCOME TAXES - INCOME TAX RATE RECONCILIATION (Details)	12 Months Ended
	Jun. 30, 2019 Rate	Jun. 30, 2018 Rate	Jun. 30, 2017 Rate
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	28.10%	35.00%
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent	(0.50%)	(4.70%)	(6.80%)
Effective Income Tax Rate Reconciliation, Tax Contingency, Other, Percent	(0.30%)	(0.30%)	(2.00%)
Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Percent	(3.80%)	(0.40%)	(1.30%)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Impairment Losses, Percent	22.80%	0.00%	0.00%
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent	0.00%	4.50%	0.00%
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent	(4.50%)	(1.20%)	(1.80%)
Effective Income Tax Rate Reconciliation, Percent	34.70%	26.00%	23.10%