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PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Property, plant and equipment.    
Gross property, plant and equipment $ 887.6 $ 848.7
Less: Accumulated depreciation (396.9) (383.1)
Net property, plant and equipment 490.7 465.6
Property    
Property, plant and equipment.    
Gross property, plant and equipment 54.0 40.2
Plant    
Property, plant and equipment.    
Gross property, plant and equipment 290.1 246.8
Equipment    
Property, plant and equipment.    
Gross property, plant and equipment 427.6 418.9
Leasehold Improvements    
Property, plant and equipment.    
Gross property, plant and equipment 50.5 49.9
Construction in Progress    
Property, plant and equipment.    
Gross property, plant and equipment $ 65.4 $ 92.9