SHARE-BASED COMPENSATION PLANS - Non-Vested Shares of Series A Preferred Stock (Details) - Series A and Series A-1 Preferred Stock shares in Millions	12 Months Ended
	Jun. 30, 2019 $ / shares shares
Shares
Outstanding, beginning balance (in shares) | shares	4.0
Granted (in shares) | shares	7.9
Forfeited (in shares) | shares	(3.5)
Outstanding, ending balance (in shares) | shares	8.4
Weighted Average Grant Date Fair Value
Outstanding and nonvested, beginning balance (in dollars per share) | $ / shares	$ 4.99
Granted (in dollars per share) | $ / shares	1.24
Forfeited (in dollars per share) | $ / shares	5.16
Outstanding and nonvested, ending balance (in dollars per share) | $ / shares	$ 1.39