Regulatory Matters - GPC Rate Matters (Details) - GEORGIA POWER CO - Subsequent Event $ in Millions	Oct. 02, 2023 USD ($)
Traditional Base
Public Utilities, General Disclosures [Line Items]
Increase (decrease) in tariff	$ 275
Environmental Compliance Cost Recovery, Traditional
Public Utilities, General Disclosures [Line Items]
Increase (decrease) in tariff	(99)
Demand Side-Management
Public Utilities, General Disclosures [Line Items]
Increase (decrease) in tariff	10
Municipal Franchise Fee
Public Utilities, General Disclosures [Line Items]
Increase (decrease) in tariff	$ 5