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Other Long-Term Liabilities Other Long-Term Liabilities (Tables)
12 Months Ended
Sep. 30, 2023
Other Liabilities, Noncurrent [Abstract]  
Other Long-Term Liabilities
Other Long-Term Liabilities
At September 30
(in millions)
 2023
2022(1)
Interest rate swap liabilities$627 $851 
Operating lease liabilities93 93 
Currency swap liabilities131 228 
Commodity contract derivative liabilities52 
EnergyRight® financing obligation
55 58 
Long-term deferred compensation41 39 
Advances for construction56 53 
Long-term deferred revenue45 39 
Other111 123 
Total other long-term liabilities$1,211 $1,485 
Note(1) At September 30, 2022, $1 million previously classified as Other (a component of Other long-term liabilities) has been reclassified to Commodity contract derivative liabilities (a component of Other long-term liabilities) to conform with current year presentation.