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Other Long-Term Liabilities (Tables) | 6 Months Ended
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Mar. 31, 2021
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 March 31, 2021 |  | At September 30, 2020
Interest rate swap liabilities | $ | 1,398 |  |  | $ | 1,927 |
Operating lease liabilities | 143 |  |  | 171 |
Currency swap liabilities | 21 |  |  | 123 |
EnergyRight® financing obligations | 71 |  |  | 78 |
Accrued long-term service agreements | 40 |  |  | 56 |
Other | 194 |  |  | 193 |
Total other long-term liabilities | $ | 1,867 |  |  | $ | 2,548 |

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