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Debt and Financing Arrangements
6 Months Ended
Mar. 31, 2021
Debt Disclosure [Abstract]  
Debt and Financing Arrangements Debt and Financing Arrangements
Net Financing Charges

Net financing charges consisted of the following (in millions):
Three Months Ended
March 31,
Six Months Ended
March 31,
2021202020212020
Interest expense, net of capitalized interest costs$53 $62 $112 $124 
Banking fees and bond cost amortization12 10 
Interest income(3)(5)(6)(18)
Net foreign exchange results for financing activities(10)(3)(15)(5)
Net financing charges$44 $59 $103 $111 

In March 2021, the Company entered into a bank term loan arrangement totaling $235 million due in March 2022 and retired $257 million in principal amount, plus accrued interest, of its 4.25% fixed rate notes that expired in March 2021.

As of March 31, 2021, the Company had a syndicated $2.5 billion committed revolving credit facility, which is scheduled to expire in December 2024, and a syndicated $500 million committed revolving credit facility, which was renewed in December 2020 and is now scheduled to expire in December 2021. As of March 31, 2021, there were no draws on the facilities.