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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 | 9 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Segment Reporting Information [Line Items] |  |  |  |
Interest expense | $ (19) | $ (24) | $ (62) | $ (69)
Gain on sale of land |  |  |  | 1
Loss on sale of business |  |  |  | (3)
Unallocated and Other [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Interest expense | (19) | (24) | (62) | (69)
Unallocated corporate costs | (16) | (11) | (51) | (42)
General unallocated income (expense) | 6 | 3 | 34 | 9
Less: Equity in earnings of affiliated companies, net of tax | 2 | 1 | 5 | 4
Income from continuing operations before income taxes and equity in earnings of affiliated companies | (33) | (34) | (140) | (113)
Certain Items [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Global restructuring activities (Note H) | (1) |  | (13) |
Acquisition and integration-related charges |  | (1) |  | (2)
Legal and environmental matters and reserves |  |  | (1) | (2)
Gain on sale of land |  |  |  | 1
Loss on sale of business |  |  |  | (3)
Other | 1 |  | 1 | (1)
Total certain items | (2) | $ (1) | (56) | $ (7)
Certain Items [Member] | Argentina [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Controlled currency devaluation and other losses | $ (2) |  | $ (43) |

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