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v3.23.3

Financial Information by Segment & Geographic Area - Sales of Equity Method Affiliate, Discounting Charges for Certain Notes Receivable, by- productive Revenue, Indirect Tax Settlement Credits, and Insurance Recoveries (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2021
Segment Reporting Information [Line Items] |  |  |
Revenues | $ 3,931 | $ 4,321 | $ 3,409
Unallocated and Other [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 143 | 163 | 158
Unallocated and Other [Member] | Shipping and Handling Costs [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 132 | 162 | 153
Unallocated and Other [Member] | By-product Sales [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 5 | 8 | 8
Unallocated and Other [Member] | Other [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | $ 6 | $ (7) | $ (3)

X
- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. 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