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Other Long-Term Liabilities (Tables) | 6 Months Ended
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Mar. 31, 2018
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
| At March 31, 2018 |  | At September 30, 2017
Interest rate swap liabilities | $ | 1,259 |  |  | $ | 1,418 |
Gallatin coal combustion residual facilities liability | 871 |  |  | 880 |
Capital lease obligations | 180 |  |  | 182 |
EnergyRight® financing obligation | 108 |  |  | 115 |
Currency swap liabilities | 43 |  |  | 92 |
Commodity contract derivative liabilities | 36 |  |  | 9 |
Membership interests of VIE subject to mandatory redemption | 29 |  |  | 30 |
Environmental agreements liability | 11 |  |  | 13 |
Other | 289 |  |  | 316 |
Total other long-term liabilities | $ | 2,826 |  |  | $ | 3,055 |

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