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v3.22.2.2

Revenue Customer Type (Details) $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) Units | Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($)
Electric revenue |  | $ 12,371 | $ 10,357 | $ 10,104
Other revenue |  | 169 | 146 | 145
Revenues |  | 12,540 | 10,503 | 10,249
Bill credits for LTA |  | $ (199) | (189) | 163
Number of LPCs signed LTA | Units |  | 147 |  |
Percentage of total operating revenues |  | 90.00% |  |
Total number of LPCs | Units |  | 153 |  |
Off-system sales |  | $ 19 | 7 | 4
Percent of sales of electricity to LPCs |  | 91.00% |  |
Pandemic Relief Credit |  | $ (228) | (221) |
MLGW's % of operating revenues |  | 9.00% |  |
NES's % of operating revenues |  | 8.00% |  |
Scenario, Forecast |  |  |  |
Pandemic Relief Credit | $ 230 |  |  |
20-year contract arrangement [Member] |  |  |  |
Percentage of total operating revenues |  | 77.10% |  |
5-year contract arrangement [Member] |  |  |  |
Number of LPCs signed LTA | Units |  | 6 |  |
Percentage of total operating revenues |  | 12.90% |  |
TENNESSEE |  |  |  |
Electric revenue |  | $ 8,137 | 6,841 | 6,740
VIRGINIA |  |  |  |
Electric revenue |  | 48 | 42 | 42
NORTH CAROLINA |  |  |  |
Electric revenue |  | 87 | 66 | 65
MISSISSIPPI |  |  |  |
Electric revenue |  | 1,182 | 984 | 941
KENTUCKY |  |  |  |
Electric revenue |  | 821 | 655 | 624
GEORGIA |  |  |  |
Electric revenue |  | 299 | 254 | 249
ALABAMA |  |  |  |
Electric revenue |  | 1,778 | 1,508 | 1,439
Federal agencies and other [Member] |  |  |  |
Electric revenue |  | 154 | 116 | 110
20-year contract arrangement [Member] |  |  |  |
Electric revenue |  | 9,670 |  |
5-year contract arrangement [Member] |  |  |  |
Electric revenue |  | 1,621 |  |
Local Power Company [Member] |  |  |  |
Electric revenue |  | 11,291 | 9,534 | 9,406
Industries Directly Served [Member] |  |  |  |
Electric revenue |  | $ 926 | $ 707 | $ 588

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