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Other Financial Information - Inventories (Details) - USD ($)
$ in Millions
Mar. 31, 2020
Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Finished products $ 199.7 $ 180.2
Raw materials 164.1 162.6
Work in process 81.7 58.2
Total inventories $ 445.5 $ 401.0