INTEREST EXPENSE, NET (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Interest Income (Expense), Net [Abstract]
Interest expense	$ 231.8	$ 233.3	$ 252.0
Foreign exchange losses (gain), net of derivative contracts	6.8	14.8	(7.6)
Interest income	(3.5)	(5.4)	(19.2)
Total interest expense, net	$ 235.1	$ 242.7	$ 225.2