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Net Completed Plant Net Completed Plant (Tables) | 12 Months Ended
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Sep. 30, 2016
Property, Plant and Equipment, Net, by Type [Abstract] |
Net Completed Plant | Net completed plant consisted of the following:
Net Completed Plant At September 30
| 2016 |  | 2015
| Cost |  | Accumulated Depreciation |  | Net |  | Cost |  | Accumulated Depreciation |  | Net
Coal-fired | $ | 15,587 |  |  | $ | 10,473 |  |  | $ | 5,114 |  |  | $ | 15,202 |  |  | $ | 9,942 |  |  | $ | 5,260 |
Gas and oil-fired | 3,918 |  |  | 1,267 |  |  | 2,651 |  |  | 3,794 |  |  | 1,194 |  |  | 2,600 |
Nuclear | 19,280 |  |  | 10,422 |  |  | 8,858 |  |  | 18,920 |  |  | 10,063 |  |  | 8,857 |
Transmission | 7,061 |  |  | 2,975 |  |  | 4,086 |  |  | 6,803 |  |  | 2,823 |  |  | 3,980 |
Hydroelectric | 2,891 |  |  | 932 |  |  | 1,959 |  |  | 2,702 |  |  | 911 |  |  | 1,791 |
Other electrical plant | 1,857 |  |  | 1,126 |  |  | 731 |  |  | 1,678 |  |  | 997 |  |  | 681 |
Subtotal | 50,594 |  |  | 27,195 |  |  | 23,399 |  |  | 49,099 |  |  | 25,930 |  |  | 23,169 |
Multipurpose dams | 928 |  |  | 379 |  |  | 549 |  |  | 928 |  |  | 371 |  |  | 557 |
Other stewardship | 42 |  |  | 18 |  |  | 24 |  |  | 42 |  |  | 17 |  |  | 25 |
Subtotal | 970 |  |  | 397 |  |  | 573 |  |  | 970 |  |  | 388 |  |  | 582 |
Total | $ | 51,564 |  |  | $ | 27,592 |  |  | $ | 23,972 |  |  | $ | 50,069 |  |  | $ | 26,318 |  |  | $ | 23,751 |

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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