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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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