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Debt and Financing Arrangements - Components of Net Financing Charges (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Debt Disclosure [Abstract]        
Interest expense, net of capitalized interest costs $ 79 $ 54 $ 219 $ 165
Other financing charges 13 6 34 16
Interest income (10) (2) (17) (5)
Net foreign exchange results for financing activities (2) (9) (18) (23)
Net financing charges $ 80 $ 49 $ 218 $ 153