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Regulatory Matters - GPC Nuclear Construction (Details) - GEORGIA POWER CO - Plant Vogtle Units 3 And 4 - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Loss Contingencies [Line Items] |  |  |  |
Net investment as of end of the period | $ 10,690 |  | $ 10,690 |
Capitalized interest accrued | 440 |  | 440 |
Traditional Electric Operating Companies |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Credit on plant vogtle units 3 and 4 | (33) | $ 21 | (33) | $ 21
Estimated Loss (Gain) On Plant Vogtle Units 3 And 4, After Tax | $ (25) | $ 16 | $ (25) | $ 16

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