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Inventories, Net (Tables) | 6 Months Ended
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Mar. 31, 2015
Inventory, Net [Abstract] |
Inventories, Net | The table below summarizes the types and amounts of TVA’s inventories:
Inventories, Net
| At March 31, 2015 |  | At September 30, 2014
Materials and supplies inventory | $ | 635 |  |  | $ | 616 |
Fuel inventory | 520 |  |  | 473 |
Emission allowance inventory | 16 |  |  | 13 |
Allowance for inventory obsolescence | (36 | ) |  | (46 | )
Inventories, net | $ | 1,135 |  |  | $ | 1,056 |

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- Definition Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 2 -Paragraph 6 -Subparagraph a,b,c -Article 5 + Details
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