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Financial Information by Segment - Schedule of Income (Loss) from Continuing Operations before Income Taxes and Equity in Earnings of Affiliated Companies for Unallocated and Other (Detail) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Segment Reporting Information [Line Items] |  |
Interest expense | $ (22) | $ (22)
Gain on sale of land |  | 1
Loss on sale of business |  | (3)
Unallocated and Other [Member] |  |
Segment Reporting Information [Line Items] |  |
Interest expense | (22) | (22)
Unallocated corporate costs | (17) | (15)
General unallocated income (expense) | 13 | 4
Less: Equity in earnings of affiliated companies, net of tax | 1 | 2
Income from continuing operations before income taxes and equity in earnings of affiliated companies | (69) | (39)
Certain Items [Member] |  |
Segment Reporting Information [Line Items] |  |
Global restructuring activities (Note H) | (9) |
Gain on sale of land |  | 1
Loss on sale of business |  | (3)
Legal and environmental matters and reserves |  | (1)
Acquisition and integration-related charges |  | (1)
Total certain items | (42) | $ (4)
Certain Items [Member] | Argentina [Member] |  |
Segment Reporting Information [Line Items] |  |
Controlled currency devaluation loss | $ (33) |

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