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Inventories (Schedule of Inventories) (Details) - USD ($)
$ in Millions
Apr. 30, 2017
Oct. 31, 2016
Inventory Disclosure [Abstract]    
Raw materials $ 101.1 $ 86.0
Work-in-process 14.7 12.6
Finished goods 321.8 319.1
Inventories, net $ 437.6 $ 417.7