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Other Long-Term Liabilities (Tables) | 9 Months Ended
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Jun. 30, 2024
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, 2024 |  | At September 30, 2023(1)
Interest rate swap liabilities | $ | 658 |  |  | $ | 627 |
Environmental compliance and remediation costs | 165 |  |  | — |
Currency swap liabilities | 116 |  |  | 131 |
Operating lease liabilities | 103 |  |  | 93 |
Long-term project cost accruals | 101 |  |  | 10 |
Commodity contract derivative liabilities | 59 |  |  | 52 |
EnergyRight® financing obligation | 52 |  |  | 55 |
Advances for construction | 49 |  |  | 56 |
Long-term deferred revenue | 48 |  |  | 45 |
Long-term deferred compensation | 45 |  |  | 41 |
Other | 94 |  |  | 101 |
Total other long-term liabilities | $ | 1,490 |  |  | $ | 1,211 |
Note (1) At September 30, 2023, $10 million previously classified as Other (a component of Other long-term liabilities) has been reclassified to Long-term project cost accruals (a component of Other long-term liabilities) to conform with current year presentation.

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- Definition Tabular disclosure of other noncurrent liabilities. + References No definition available. + Details
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