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Other Long-Term Liabilities Other Long-Term Liabilities (Tables) | 12 Months Ended
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Sep. 30, 2013
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 September 30
| 2013 |  | 2012
Interest rate swap liabilities | $ | 1,199 |  |  | $ | 1,723 |
Environmental agreements liability | 190 |  |  | 237 |
EnergyRight® financing obligation | 149 |  |  | 148 |
Membership interests of VIE subject to mandatory redemption | 38 |  |  | — |
Coal contract derivative liabilities | 35 |  |  | 205 |
Commodity swap derivative liabilities | 36 |  |  | 59 |
Currency swap liabilities | 15 |  |  | 54 |
Other | 199 |  |  | 254 |
Total other long-term liabilities | $ | 1,861 |  |  | $ | 2,680 |

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