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Debt and Financing Arrangements (Tables)
6 Months Ended
Mar. 31, 2022
Debt Disclosure [Abstract]  
Components of Net Financing Charges
Net financing charges consisted of the following (in millions):
Three Months Ended
March 31,
Six Months Ended
March 31,
2022202120222021
Interest expense, net of capitalized interest costs$56 $53 $111 $112 
Banking fees and bond cost amortization10 12 
Interest income(1)(3)(3)(6)
Net foreign exchange results for financing activities(9)(10)(14)(15)
Net financing charges$51 $44 $104 $103