v3.25.2
Other Long-Term Liabilities (Tables)
 9 Months Ended
Jun. 30, 2025
Other Liabilities, Noncurrent [Abstract]  
Other Long-Term Liabilities The table below summarizes the types and amounts of Other long-term liabilities:
Other Long-Term Liabilities
(in millions)
 At June 30, 2025
At September 30, 2024(1)
Interest rate swap liabilities$622 $792 
Environmental compliance and remediation costs272 212 
Long-term project cost accruals198 140 
Currency swap liabilities85 109 
Operating lease liabilities74 88 
EnergyRight® financing obligation
52 52 
Long-term deferred compensation47 50 
Long-term deferred revenue 38 48 
Accrued long-term service agreements20 7 
Advances for construction15 55 
Commodity contract derivative liabilities8 64 
Other76 95 
Total other long-term liabilities$1,507 $1,712 
Note
(1) At September 30, 2024, $7 million previously classified as Other (a component of Other long-term liabilities) has been reclassified to Accrued long-term service agreements (a component of Other long-term liabilities) to conform with current year presentation.