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Balance Sheet Details - Inventory (Details) - USD ($)
$ in Millions
Mar. 31, 2020
Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Raw materials $ 64.4 $ 64.9
Work-in-process 17.7 11.1
Finished goods 59.8 43.8
Total inventory $ 141.9 $ 119.8