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v3.22.2

Revenue (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 31, 2022 | Jun. 30, 2022 | Jun. 30, 2021 | Mar. 31, 2022 | Jun. 30, 2022 | Jun. 30, 2021 | Sep. 30, 2023
State [Line Items] |  |  |  |  |  |  |
Electric revenue |  | $ (2,925) | $ (2,490) |  | $ (8,306) | $ (7,289) |
Sales of Electricity |  | 2,932 | 2,491 |  | 8,318 | 7,294 |
Off System Sales of Electricity |  | 7 |  |  | 12 | 5 |
Other revenue |  | $ 38 | 36 |  | $ 119 | 109 |
Total long duration contract revenue recognition |  | 2,662 |  |  | 7,576 |  |
Revenues |  | $ 2,970 | 2,527 |  | $ 8,437 | 7,403 |
Off system sales |  |  | 1 |  |  |  |
Percent of wholesale Credit offered |  |  |  |  | 310.00% |  |
Percent of Pandemic Credit Offered |  |  |  | 2.50% | 2.50% |  |
Pandemic Relief Credit |  | (56) | (52) |  | $ (161) | (156) |
Percent of Generation Flexibility Credit |  |  |  |  | 5.00% |  |
NES's % of operating revenues |  |  |  |  | 800.00% |  |
Percent of Generation Flexibility Credit |  |  |  |  | 5.00% |  |
Forecast |  |  |  |  |  |  |
State [Line Items] |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  | $ 12,400
Percent of Pandemic Credit Offered |  |  |  |  |  |  | 1.50%
Pandemic Relief Credit | $ 220 |  |  |  |  |  | $ 230
ALABAMA |  |  |  |  |  |  |
State [Line Items] |  |  |  |  |  |  |
Electric revenue |  | (419) | (359) |  | $ (1,203) | (1,072) |
GEORGIA |  |  |  |  |  |  |
State [Line Items] |  |  |  |  |  |  |
Electric revenue |  | (69) | (60) |  | (207) | (184) |
KENTUCKY |  |  |  |  |  |  |
State [Line Items] |  |  |  |  |  |  |
Electric revenue |  | (195) | (163) |  | (556) | (457) |
MISSISSIPPI |  |  |  |  |  |  |
State [Line Items] |  |  |  |  |  |  |
Electric revenue |  | (283) | (237) |  | (788) | (686) |
NORTH CAROLINA |  |  |  |  |  |  |
State [Line Items] |  |  |  |  |  |  |
Electric revenue |  | (20) | (15) |  | (63) | (49) |
TENNESSEE |  |  |  |  |  |  |
State [Line Items] |  |  |  |  |  |  |
Electric revenue |  | (1,929) | (1,646) |  | (5,455) | (4,810) |
VIRGINIA |  |  |  |  |  |  |
State [Line Items] |  |  |  |  |  |  |
Electric revenue |  | (10) | $ (10) |  | (34) | $ (31) |
20-year Termination Notice [Member] |  |  |  |  |  |  |
State [Line Items] |  |  |  |  |  |  |
Revenues |  | 2,250 |  |  | 6,473 |  |
5-year termination notice [Member] |  |  |  |  |  |  |
State [Line Items] |  |  |  |  |  |  |
Revenues |  | $ 412 |  |  | $ 1,103 |  |

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