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Property, Plant and Equipment, Net - Balances (Details) - USD ($)
$ in Millions
Jun. 30, 2022
Dec. 31, 2021
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 158.4 $ 150.4
Less accumulated depreciation (105.6) (106.9)
Property, plant and equipment, net 52.8 43.5
Leasehold improvements    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 41.8 38.0
Equipment    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 116.6 $ 112.4