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Balance Sheet Details - Property and Equipment (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Property, Plant and Equipment [Line Items]    
Total cost $ 669.5 $ 426.3
Less accumulated depreciation and amortization (154.2) (105.0)
Total property and equipment, net 515.3 321.3
Land    
Property, Plant and Equipment [Line Items]    
Total cost 15.6 0.0
Building    
Property, Plant and Equipment [Line Items]    
Total cost 49.2 15.5
Furniture and fixtures    
Property, Plant and Equipment [Line Items]    
Total cost 15.3 12.8
Computer software and hardware    
Property, Plant and Equipment [Line Items]    
Total cost 35.7 32.7
Machinery and equipment    
Property, Plant and Equipment [Line Items]    
Total cost 198.9 130.2
Leasehold improvements    
Property, Plant and Equipment [Line Items]    
Total cost 135.8 102.5
Construction in progress    
Property, Plant and Equipment [Line Items]    
Total cost $ 219.0 $ 132.6