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Commitments and Contingencies (Tables) | 12 Months Ended
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Sep. 30, 2023
Commitments and Contingencies Disclosure [Abstract] |
Unfunded loan commitments | At September 30, 2023, TVA's commitments under unfunded loan commitments were $1 million for 2024. TVA has no commitments under unfunded loan commitments for 2025 through 2028.

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