PROPERTY, PLANT AND EQUIPMENT, NET - Schedule of Property, Plant and Equipment at Cost and Accumulated Depreciation (Details) - USD ($) $ in Millions	Jun. 30, 2025	Jun. 30, 2024
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 659.2	$ 606.6
Less: Accumulated depreciation	(489.1)	(444.4)
Property, plant and equipment, net	170.1	162.2
Land and buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2.5	2.5
Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	440.1	383.4
Furniture, leaseholds and other
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 216.7	$ 220.7