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Summary of Significant Accounting Policies - Property, Plant and Equipment Summary (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment $ 1,090.9 $ 941.2
Accumulated depreciation (583.0) (505.4)
Total property, plant and equipment, net 507.9 435.8
Machinery and equipment    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment 419.6 350.7
Land and buildings    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment 359.7 317.8
Computer equipment and software    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment 182.0 155.2
Furniture and fixtures    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment 57.6 52.5
Construction in progress    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment $ 72.0 $ 65.0