INTEREST EXPENSE, NET - Schedule of interest expense, net (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Interest Income (Expense), Operating [Abstract]
Interest expense	$ 50.2	$ 58.8	$ 167.3	$ 187.3
Foreign exchange losses, net of derivative contracts	1.9	4.6	8.0	15.1
Interest income	(4.2)	(3.0)	(11.2)	(12.1)
Total interest expense, net	$ 47.9	$ 60.4	$ 164.1	$ 190.3