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Inventories (Tables)
3 Months Ended
Dec. 31, 2020
Inventory Disclosure [Abstract]  
Inventories
Inventories consisted of the following (in millions):
December 31, 2020September 30, 2020
Raw materials and supplies$633 $629 
Work-in-process164 142 
Finished goods1,116 1,002 
Inventories$1,913 $1,773