Introduction - Nuclear Decommissioning (Details) - GEORGIA POWER CO $ in Millions	9 Months Ended
	Sep. 30, 2024 USD ($)
Plant Hatch
Liability for Claims and Claims Adjustment Expense [Line Items]
Site study costs:	$ 1,079
Plant Hatch | Site Study Cost Radiated Structures
Liability for Claims and Claims Adjustment Expense [Line Items]
Site study costs:	696
Plant Hatch | Spent fuel management
Liability for Claims and Claims Adjustment Expense [Line Items]
Site study costs:	306
Plant Hatch | Non-radiated structures
Liability for Claims and Claims Adjustment Expense [Line Items]
Site study costs:	77
Plant Vogtle Nuclear Units One and Two
Liability for Claims and Claims Adjustment Expense [Line Items]
Site study costs:	907
Plant Vogtle Nuclear Units One and Two | Site Study Cost Radiated Structures
Liability for Claims and Claims Adjustment Expense [Line Items]
Site study costs:	545
Plant Vogtle Nuclear Units One and Two | Spent fuel management
Liability for Claims and Claims Adjustment Expense [Line Items]
Site study costs:	255
Plant Vogtle Nuclear Units One and Two | Non-radiated structures
Liability for Claims and Claims Adjustment Expense [Line Items]
Site study costs:	107
Plant Vogtle Units 3 And 4
Liability for Claims and Claims Adjustment Expense [Line Items]
Site study costs:	$ 719
Estimated inflation rate	2.30%
Estimated trust earnings rate	4.30%
Plant Vogtle Units 3 And 4 | Site Study Cost Radiated Structures
Liability for Claims and Claims Adjustment Expense [Line Items]
Site study costs:	$ 542
Plant Vogtle Units 3 And 4 | Spent fuel management
Liability for Claims and Claims Adjustment Expense [Line Items]
Site study costs:	88
Plant Vogtle Units 3 And 4 | Non-radiated structures
Liability for Claims and Claims Adjustment Expense [Line Items]
Site study costs:	$ 89
Plant Hatch And Plant Vogtle Units 1 And 2
Liability for Claims and Claims Adjustment Expense [Line Items]
Estimated inflation rate	2.50%
Estimated trust earnings rate	4.50%
Plant Vogtle Unit 4
Liability for Claims and Claims Adjustment Expense [Line Items]
Amount expensed for ratemaking	$ 8