SHARE-BASED COMPENSATION PLANS - Outstanding Series A Preferred Stock Activity (Details) - Series A Preferred Stock $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Jun. 30, 2018 USD ($) $ / shares shares
Shares
Outstanding, beginning of period (in shares) | shares	4.2
Granted (in shares) | shares	1.0
Forfeited (in shares) | shares	(0.2)
Outstanding, end of period (in shares) | shares	5.0
Vested and expected to vest (in shares) | shares	4.4
Weighted Average Exercise Price
Outstanding, beginning of period (in dollars per share) | $ / shares	$ 24.66
Granted (in dollars per share) | $ / shares	19.85
Forfeited (in dollars per share) | $ / shares	22.66
Outstanding, end of period (in dollars per share) | $ / shares	23.62
Vested and expected to vest (in dollars per share) | $ / shares	$ 23.57
Aggregate Intrinsic Value and Weighted Average Remaining Contractual Term
Vested and expected to vest, aggregate intrinsic value | $	$ 0.0
Vested and expected to vest, weighted average remaining contractual term	5 years 2 months 1 day