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Other Long-Term Liabilities (Tables) | 6 Months Ended
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Mar. 31, 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 March 31, 2013 |  | At September 30, 2012
Interest rate swap liabilities | $ | 1,510 |  |  | $ | 1,723 |
Environmental agreements liability | 226 |  |  | 237 |
EnergyRight® purchase obligation | 149 |  |  | 148 |
Currency swap liabilities | 63 |  |  | 54 |
Coal contract derivative liabilities | 52 |  |  | 205 |
Commodity swap derivative liabilities | 41 |  |  | 59 |
Other | 186 |  |  | 254 |
Total other long-term liabilities | $ | 2,227 |  |  | $ | 2,680 |

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