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Inventories (Components of Inventories) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2019
Inventory, Net [Abstract]    
Raw materials $ 157.8 $ 130.6
Finished goods 384.2 321.7
Total 542.0 $ 452.3
Inventory obsolescence expense $ 88.0