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Assets and Liabilities Held For Sale and Discontinued Operations - Summarized Results of Discontinued Operations (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Income from discontinued operations, net of tax | $ 298 | $ 287 | $ 253
Income from discontinued operations attributable to noncontrolling interest, net of tax | 191 | 165 | 176
Income from discontinued operations, net of tax (Note 3) | 489 | 452 | 429
Discontinued Operations, Disposed of by Sale | Residential and Light Commercial HVAC Business |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Net sales | 4,466 | 4,462 | 4,662
Cost of goods sold | 3,300 | 3,295 | 3,409
Gross profit | 1,166 | 1,167 | 1,253
Selling, general and administrative expenses | 761 | 794 | 867
Restructuring and impairment costs | 34 | 15 | 20
Net financing charges | 17 | 23 | 8
Equity income | 276 | 262 | 240
Income from discontinued operations before income taxes | 630 | 597 | 598
Provision for income taxes on discontinued operations | 141 | 145 | 169
Income from discontinued operations, net of tax | 489 | 452 | 429
Income from discontinued operations attributable to noncontrolling interest, net of tax | 191 | 165 | 176
Income from discontinued operations, net of tax (Note 3) | $ 298 | $ 287 | $ 253

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