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Inventories (Details) - USD ($)
$ in Millions
Sep. 30, 2019
Dec. 31, 2018
Inventory Disclosure [Abstract]    
Finished goods $ 887.1 $ 660.4
Repair and replacement parts 612.9 587.3
Work in process 285.2 217.5
Raw materials 526.1 443.5
Inventories, net $ 2,311.3 $ 1,908.7