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Inventories (Tables)
6 Months Ended
Mar. 31, 2021
Inventory Disclosure [Abstract]  
Schedule of Inventories
Inventories consisted of the following:
(in millions)March 31,
2021
September 30, 2020
Raw materials and supplies$583 $530 
Work-in-process25 22 
Finished goods148 133 
Inventories$756 $685