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Inventories (Tables)
6 Months Ended
Mar. 31, 2022
Inventory Disclosure [Abstract]  
Schedule of Inventories
Inventories consisted of the following:

(in millions)March 31,
2022
September 30,
2021
Raw materials and supplies$786 $750 
Work-in-process25 29 
Finished goods187 197 
Inventories$998 $976