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Inventories (Details) - USD ($)
$ in Millions
Apr. 30, 2020
Oct. 31, 2019
Inventory Disclosure [Abstract]    
Raw materials $ 141.1 $ 131.4
Work-in-process 13.0 13.3
Finished goods 414.1 362.2
Inventories, net $ 568.2 $ 506.9