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Inventories (Tables)
12 Months Ended
Sep. 30, 2020
Inventory Disclosure [Abstract]  
Schedule of Components of Inventories
The components of inventories are as follows:
30 September20202019
Finished goods$134.5 $128.8 
Work in process21.3 27.5 
Raw materials, supplies and other249.0 232.0 
Inventories$404.8 $388.3