v3.26.1
Acquisition and Divestitures - Summarized Results of Discontinued Operations (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Disposal Group, Including Discontinued Operations [Line Items]        
Income from discontinued operations, net of tax $ 0 $ 160 $ (27) $ 301
Income from discontinued operations attributable to noncontrolling interest, net of tax 0 77 0 157
Income from discontinued operations $ 0 83 (27) 144
Discontinued Operations, Disposed of by Sale | Residential and Light Commercial HVAC Business        
Disposal Group, Including Discontinued Operations [Line Items]        
Net sales   1,369   3,404
Cost of goods sold   1,007   2,579
Gross profit   362   825
Selling, general and administrative expenses   212   584
Restructuring and impairment costs   12   21
Net financing charges   5   6
Equity income   77   211
Income from discontinued operations before income taxes   210   425
Provision for income taxes on discontinued operations   50   124
Income from discontinued operations, net of tax   160 $ (27) 301
Income from discontinued operations attributable to noncontrolling interest, net of tax   77   157
Income from discontinued operations   $ 83   $ 144