Regulatory Matters - GPC Fuel Cost Recovery (Details) - GEORGIA POWER CO - Subsequent Event $ in Millions	Oct. 12, 2021 USD ($)
Public Utilities, General Disclosures [Line Items]
Requested revenues increase (decrease) percentage	15.00%
Requested rate increase (decrease) amount	$ 252

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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