DERIVATIVE INSTRUMENTS - Gains and Losses Recognized in OCI (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Derivative [Line Items]
Net investment hedges	$ 36.3	$ (256.5)	$ 47.1
Foreign exchange forward contracts
Derivative [Line Items]
Gain (Loss) Recognized in OCI	(1.0)	(0.3)	1.3
Interest rate swap contracts
Derivative [Line Items]
Gain (Loss) Recognized in OCI	13.9	1.0	(50.3)
Cross-currency swap contracts
Derivative [Line Items]
Gain (Loss) Recognized in OCI	$ 0.0	$ (25.1)	$ (12.5)