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Inventories (Schedule of Inventories) (Details) - USD ($)
$ in Millions
Jun. 30, 2022
Dec. 31, 2021
Inventory Disclosure [Abstract]    
Finished goods $ 62.4 $ 49.9
Goods in process 7.0 6.4
Raw materials and supplies 58.3 48.4
Less LIFO reserves (18.9) (14.5)
Total inventories, net $ 108.8 $ 90.2