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Inventories, Net (Text Block) | 6 Months Ended
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Mar. 31, 2025
Inventory, Net [Abstract] |
Inventories, Net | Inventories, Net The table below summarizes the types and amounts of TVA's inventories:
Inventories, Net (in millions)
| At March 31, 2025 |  | At September 30, 2024
Materials and supplies inventory | $ | 970 |  |  | $ | 931 |
Fuel inventory | 284 |  |  | 286 |
Renewable energy certificates/emissions allowance inventory, net | 9 |  |  | 11 |
Allowance for inventory obsolescence | (81) |  |  | (73) |
Inventories, net | $ | 1,182 |  |  | $ | 1,155 |

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- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 330 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/330/tableOfContent + Details
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