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)