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Debt and Financing Arrangements (Tables)
6 Months Ended
Mar. 31, 2023
Debt Disclosure [Abstract]  
Schedule of Short-Term Debt
Short-term debt consisted of the following (in millions):
 March 31,September 30,
 20232022
Bank borrowings$20 $10 
Commercial paper1,554 172 
Term loans163 487 
$1,737 $669 
Weighted average interest rate on short-term debt outstanding2.9 %0.5 %
Components of Net Financing Charges
Net financing charges consisted of the following (in millions):
Three Months Ended
March 31,
Six Months Ended
March 31,
2023202220232022
Interest expense, net of capitalized interest costs$71 $56 $140 $111 
Other financing charges11 21 10 
Interest income(3)(1)(7)(3)
Net foreign exchange results for financing activities(8)(9)(16)(14)
Net financing charges$71 $51 $138 $104