LEASES - Lease cost (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Lease Cost:
Operating lease cost	$ 18.8	$ 19.1
Short-term lease cost	0.7	0.3
Variable lease cost	11.8	10.8
Sublease income	(3.6)	(3.9)
Net lease cost	27.7	26.3
Other information:
Operating cash outflows from operating leases	(16.8)	(19.2)
Right-of-use assets obtained in exchange for lease obligations	$ 18.6	$ 15.0
Weighted-average remaining lease term - real estate	6 years 6 months	7 years
Weighted-average discount rate - real estate leases	4.53%	4.29%