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v3.26.1

Financial Information by Segment - Schedule of Reconciliation of Segment Earnings before Interest and Income Taxes to Income (Loss) before Income Taxes and Equity in Earnings of Affiliated Companies (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2026 | Jun. 30, 2025 | Jun. 30, 2026 | Jun. 30, 2025
Segment Reporting Information [Line Items] |  |  |  |
Interest Expense | $ (18) | $ (19) | $ (54) | $ (56)
Less: Equity in earnings of affiliated companies, net of tax | 2 | 1 | 5 | 5
Unallocated and Other [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Segment EBIT | 165 | 185 | 467 | 541
Interest Expense | (18) | (19) | (54) | (56)
Unallocated corporate costs | (14) | (13) | (41) | (39)
General unallocated income (expense) | 5 | 6 | 23 | 22
Less: Equity in earnings of affiliated companies, net of tax | 2 | 1 | 5 | 5
Income from continuing operations before income taxes and equity in earnings of affiliated companies | 58 | 155 | 296 | 450
Certain Items [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Certain items | $ (78) | $ (3) | $ (94) | $ (13)

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