Accounts Receivable - Narrative (Details) - USD ($) $ in Millions |
12 Months Ended | |
---|---|---|
Sep. 30, 2023 |
Sep. 30, 2022 |
|
Receivables [Abstract] | ||
Accounts receivable, sale | $ 1,962 | $ 1,115 |
Outstanding receivables sold under factoring agreements | $ 681 | $ 476 |