DERIVATIVE INSTRUMENTS - Schedule of amount of gains and losses recognized in other comprehensive income (loss) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2025	Dec. 31, 2024
Derivative [Line Items]
Net investment hedges	$ 1.2	$ 105.8	$ 0.6	$ 45.6
Foreign exchange forward contracts
Derivative [Line Items]
Gain (Loss) Recognized in OCI	0.1	1.7	(0.5)	1.1
Cross-currency swap contracts
Derivative [Line Items]
Gain (Loss) Recognized in OCI	$ 6.0	$ 0.0	$ 1.7	$ 0.0