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Inventories (Details) - USD ($)
$ in Millions
Nov. 30, 2019
Nov. 30, 2018
Inventory Disclosure [Abstract]    
Raw materials and supplies $ 31.4 $ 35.0
Work-in-process 4.7 5.3
Finished goods 66.6 63.5
Inventories, gross 102.7 103.8
LIFO reserve 15.1 18.1
Obsolescence reserve (6.1) (6.9)
Inventories, net 81.5 78.8
LIFO Inventory Amount $ 48.4 $ 47.6
Percentage of LIFO Inventory 47.20% 45.90%