SHARE-BASED COMPENSATION PLANS - Non-vested Nonqualified Stock Options (Details) - $ / shares shares in Millions	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Number of Shares
Granted (in shares)	9.3
Weighted Average Grant Date Fair Value
Granted (in dollars per share)	$ 6.34	$ 0.00	$ 8.75
Non Qualified Options
Number of Shares
Non-vested, beginning balance (in shares)	4.4
Granted (in shares)	9.3
Vested (in shares)	(3.3)
Forfeited (in shares)	(2.4)
Non-vested, ending balance (in shares)	8.0	4.4
Weighted Average Grant Date Fair Value
Non-vested, beginning balance (in dollars per share)	$ 4.81
Granted (in dollars per share)	18.61
Vested (in dollars per share)	3.99
Forfeited (in dollars per share)	6.87
Non-vested, ending balance (in dollars per share)	$ 6.33	$ 4.81