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Deferred Costs, Capitalized, Prepaid, and Other Assets (Tables)
12 Months Ended
Sep. 30, 2022
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Schedule of Other Current Assets
Other Current Assets 
At September 30
(in millions)
 20222021
Commodity contract derivative assets$172 $210 
Other85 77 
Other current assets$257 $287