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Inventories
9 Months Ended
Jun. 30, 2022
Inventory Disclosure [Abstract]  
Inventories
4. Inventories

Inventories consisted of the following:

(in millions)June 30,
2022
September 30,
2021
Raw materials and supplies$765 $750 
Work-in-process24 29 
Finished goods164 197 
Inventories$953 $976