INTEREST EXPENSE, NET (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Interest Income (Expense), Net [Abstract]
Interest expense	$ 287.1	$ 219.6	$ 112.9
Foreign exchange (gain) losses, net of derivative contracts	(8.5)	3.4	(26.9)
Interest income	(13.6)	(4.4)	(4.1)
Total interest expense, net	265.0	$ 218.6	81.9
Gain related to short-term forward contracts	$ 1.4		$ 11.1