INCOME TAXES - EFFECTIVE INCOME TAX RATE RECONCILIATION (Details)	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Provision for income taxes at statutory rate	21.00%	21.00%	28.10%
Increase (decrease) due to:
State and local income taxes, net of federal tax benefit	(0.10%)	0.60%	0.50%
TCJA net income tax impact	0.00%	0.20%	22.80%
Stock-based compensation arrangements – excess tax benefits	(7.50%)	(2.70%)	(2.50%)
Taxation of foreign operations	11.00%	1.90%	(4.70%)
Income tax reserve adjustments	0.40%	0.50%	(0.50%)
Nondeductible goodwill impairment charges	8.00%	0.60%	0.00%
Other, net	0.70%	0.10%	(0.10%)
Effective tax rate	33.50%	22.20%	43.60%