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Inventories (Details) - USD ($)
$ in Millions
Mar. 31, 2023
Sep. 30, 2022
Inventory [Abstract]    
Raw materials and supplies $ 122.9 $ 130.9
Work in process 19.3 21.1
Finished products 414.6 361.9
Flocks 37.5 35.2
Inventories $ 594.3 $ 549.1