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Debt and Financing Arrangements (Tables)
 9 Months Ended
Jun. 30, 2022
Debt Disclosure [Abstract]  
Components of Net Financing Charges
Net financing charges consisted of the following (in millions):
Three Months Ended
June 30,		Nine Months Ended
June 30,
2022202120222021
Interest expense, net of capitalized interest costs$54 $55 $165 $167 
Other financing charges6 7 16 19 
Interest income(2)(1)(5)(7)
Net foreign exchange results for financing activities(9)(5)(23)(20)
Net financing charges$49 $56 $153 $159