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Operations and Summary of Significant Accounting Policies - Inventories (Details) - USD ($)
$ in Millions
Dec. 31, 2016
Dec. 31, 2015
Accounting Policies [Abstract]    
Inventory Valuation Reserves $ 137.2 $ 134.6
Inventory, Net [Abstract]    
Finished goods 589.3 523.1
Repair and replacement parts 532.5 515.4
Work in process 113.8 97.5
Raw materials 279.2 287.4
Inventories, net $ 1,514.8 $ 1,423.4