v3.26.1
Debt and Financing Arrangements - Components of Net Financing Charges (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Debt Disclosure [Abstract]        
Interest expense, net of capitalized interest costs $ 58 $ 55 $ 160 $ 178
Other financing charges 5 4 16 14
Interest income (3) (3) (6) (8)
Net foreign exchange results for financing activities 11 21 27 59
Net financing charges $ 71 $ 77 $ 197 $ 243