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Summary of Significant Accounting Policies - Schedule Of Inventory, Current (Details) - USD ($)
$ in Millions
Mar. 31, 2019
Dec. 31, 2018
Accounting Policies [Abstract]    
Finished goods $ 154.6 $ 148.9
Work-in-process 12.0 11.8
Raw materials and supplies 73.1 61.6
Total $ 239.7 $ 222.3