DERIVATIVE INSTRUMENTS - Gains and Losses Recognized in OCI (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Derivative [Line Items]
Foreign currency borrowings	$ (106.2)	$ 26.8	$ (53.9)
Foreign exchange forward contracts
Derivative [Line Items]
Gain (Loss) Recognized in OCI	(1.1)	2.0	(3.7)
Interest rate swap contracts
Derivative [Line Items]
Gain (Loss) Recognized in OCI	0.0	(0.1)	5.4
Cross-currency swap contracts
Derivative [Line Items]
Gain (Loss) Recognized in OCI	$ (75.6)	$ 0.0	$ 0.0