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Operations and Summary of Significant Accounting Policies - Inventories (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Accounting Policies [Abstract]    
Inventory Valuation Reserves $ 178.6 $ 156.6
Inventory, Net [Abstract]    
Finished goods 780.1 660.4
Repair and replacement parts 611.5 587.3
Work in process 213.4 217.5
Raw materials 473.7 443.5
Inventories, net $ 2,078.7 $ 1,908.7