INTEREST EXPENSE, NET (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Interest Income (Expense), Net [Abstract]
Interest expense	$ 233.3	$ 252.0	$ 222.7
Foreign exchange (gain) losses, net of derivative contracts	14.8	(7.6)	(8.5)
Interest income	(5.4)	(19.2)	(13.6)
Total interest expense, net	$ 242.7	$ 225.2	200.6
Gain related to short-term forward contracts			$ 1.4