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Revenue Local Power Company Contracts (Tables) | 9 Months Ended
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Jun. 30, 2019
Long-term Contract for Purchase of Electric Power [Line Items] |
Long-term Contracts or Programs Disclosure [Text Block] | The number of LPCs with the contract arrangements described below, the revenues derived from such arrangements for the three and nine months ended June 30, 2019, and the percentage of TVA’s total operating revenues for the three and nine months ended June 30, 2019 represented by these revenues are summarized in the tables below:
TVA Local Power Company Contracts At June 30, 2019
Contract Arrangements(1) | Number of LPCs |  | Sales to LPCs in the Three Months Ended June 30, 2019 (in millions) |  | Percentage of Total Operating Revenues in the Three Months Ended June 30, 2019
20-year termination notice | 3 |  |  | $ | 28 |  |  | 1.1 | %
15-year termination notice | 11 |  |  | 112 |  |  | 4.3 | %
12-year termination notice | 1 |  |  | 6 |  |  | 0.2 | %
10-year termination notice | 52 |  |  | 822 |  |  | 31.6 | %
6-year termination notice | 1 |  |  | 11 |  |  | 0.4 | %
5-year termination notice | 86 |  |  | 1,387 |  |  | 53.3 | %
Total | 154 |  |  | $ | 2,366 |  |  | 90.9 | %
Note (1) Ordinarily, the LPCs and TVA have the same termination notice period; however, in contracts with five of the LPCs with five-year termination notices, TVA has a 10-year termination notice (which becomes a five-year termination notice if TVA loses its discretionary wholesale rate-setting authority). Two of the LPCs have five-year termination notices or a shorter period if any act of Congress, court decision, or regulatory change requires or permits that election.
TVA Local Power Company Contracts At June 30, 2019
Contract Arrangements(1) | Number of LPCs |  | Sales to LPCs in the Nine Months Ended June 30, 2019 (in millions) |  | Percentage of Total Operating Revenues in the Nine Months Ended June 30, 2019
20-year termination notice | 3 |  |  | $ | 96 |  |  | 1.2 | %
15-year termination notice | 11 |  |  | 362 |  |  | 4.5 | %
12-year termination notice | 1 |  |  | 19 |  |  | 0.2 | %
10-year termination notice | 52 |  |  | 2,536 |  |  | 31.4 | %
6-year termination notice | 1 |  |  | 36 |  |  | 0.4 | %
5-year termination notice | 86 |  |  | 4,298 |  |  | 53.2 | %
Total | 154 |  |  | $ | 7,347 |  |  | 90.9 | %
Note (1) Ordinarily, the LPCs and TVA have the same termination notice period; however, in contracts with five of the LPCs with five-year termination notices, TVA has a 10-year termination notice (which becomes a five-year termination notice if TVA loses its discretionary wholesale rate-setting authority). Two of the LPCs have five-year termination notices or a shorter period if any act of Congress, court decision, or regulatory change requires or permits that election.

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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