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Inventories (Tables)
12 Months Ended
Sep. 30, 2021
Inventory Disclosure [Abstract]  
Schedule of Components of Inventories
The components of inventories are as follows:
30 September20212020
Finished goods$150.7 $134.5 
Work in process24.0 21.3 
Raw materials, supplies and other279.2 249.0 
Inventories$453.9 $404.8