Regulatory Matters - GPC Integrated Resource Plan (Details) - GEORGIA POWER CO $ in Millions		1 Months Ended	60 Months Ended	61 Months Ended
	Oct. 27, 2023 turbine MW	Aug. 31, 2022 USD ($)	Dec. 31, 2028 MW	Dec. 31, 2028 MW
Scenario, Forecast
Public Utilities, General Disclosures [Line Items]
Requested additional generating capacity (in MWs)			750
Subsequent Event
Public Utilities, General Disclosures [Line Items]
Number of turbines | turbine	3
Subsequent Event | Scenario, Forecast
Public Utilities, General Disclosures [Line Items]
Requested additional generating capacity (in MWs)				230
Subsequent Event | Maximum
Public Utilities, General Disclosures [Line Items]
Requested additional generating capacity (in MWs)	1,000
Plant Tugalo
Public Utilities, General Disclosures [Line Items]
Planned expenses to modernize plant | $		$ 115
Plant Yates | Subsequent Event | Maximum
Public Utilities, General Disclosures [Line Items]
Requested additional generating capacity (in MWs)	1,400