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PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($)
$ in Millions
Sep. 30, 2023
Dec. 31, 2022
Property, plant and equipment.    
Property, plant and equipment – gross  $ 901.9 $ 848.7
Less: Accumulated depreciation (401.4) (383.1)
Property, plant and equipment – net 500.5 465.6
Property    
Property, plant and equipment.    
Property, plant and equipment – gross  61.6 40.2
Plant    
Property, plant and equipment.    
Property, plant and equipment – gross  283.8 246.8
Equipment    
Property, plant and equipment.    
Property, plant and equipment – gross  450.6 418.9
Leasehold improvements    
Property, plant and equipment.    
Property, plant and equipment – gross  50.6 49.9
Construction in progress    
Property, plant and equipment.    
Property, plant and equipment – gross  $ 55.3 $ 92.9