INCOME TAXES - INCOME TAX RATE RECONCILIATION (Details)	12 Months Ended
	Jun. 30, 2020 Rate	Jun. 30, 2019 Rate	Jun. 30, 2018 Rate
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%	28.10%
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent	(0.10%)	(0.50%)	(4.70%)
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent	1.40%	2.60%	1.40%
Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-based Payment Arrangement, Percent	(1.60%)	(3.80%)	(0.40%)
Effective Income Tax Rate Reconciliation, Tax benefit from simplification of legal entity structure, percent	(1.40%)	0.00%	0.00%
Effective Income Tax Rate Reconciliation, Deduction, Percent	(1.00%)	(2.20%)	0.00%
Effective Income Tax Rate Reconciliation, Tax Contingency, Other, Percent	0.10%	(0.30%)	(0.30%)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Impairment Losses, Percent	0.00%	22.80%	0.00%
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent	0.00%	0.00%	4.50%
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent	(1.20%)	(4.90%)	(2.60%)
Effective Income Tax Rate Reconciliation, Percent	17.20%	34.70%	26.00%