PROPERTY, PLANT AND EQUIPMENT - Schedule of Property, Plant and Equipment, Net (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 61.3	$ 59.4
Less accumulated depreciation and amortization	42.2	39.4
Property, plant and equipment, net	19.1	20.0
Land improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	0.8	0.8
Furniture and fixtures, office, computer and other equipment and software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	44.2	43.0
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 16.3	$ 15.6