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-Topic 980
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REGULATORY MATTERS - GPC Rate Plans and Integrated Resource Plan (Details) $ in Millions						1 Months Ended			3 Months Ended		12 Months Ended						56 Months Ended	60 Months Ended
	Dec. 31, 2024 USD ($) agreement	Dec. 03, 2024 MW	Jun. 27, 2024 agreement	Jan. 12, 2024 MW	Oct. 27, 2023 MW	Jan. 31, 2025 MW	Jun. 30, 2023 USD ($)	May 31, 2023 USD ($)	Sep. 30, 2024 facility MW	Jun. 30, 2024 USD ($)	Dec. 31, 2028 MW	Dec. 31, 2025 USD ($) MW	Dec. 31, 2024 USD ($) MW	Dec. 31, 2023 USD ($) turbine MW	Dec. 31, 2022 USD ($) agreement MW	Dec. 31, 2019	Dec. 31, 2028 MW	Dec. 31, 2028 MW	Mar. 31, 2023 USD ($)
Public Utilities, General Disclosures [Line Items]
Regulatory asset amortization period	4 years												4 years
Georgia Power
Public Utilities, General Disclosures [Line Items]
Requested number of power purchase agreements to be certified \| agreement															6
Requested additional generating capacity (in MW)									265				1,567		8,500
Requested number of affiliate power purchase agreements to be certified \| agreement	2		5
Requested rate increase (decrease), amount \| $								$ 1,100							$ 14,000
Requested recovery of construction costs \| $										$ 10			$ 760
Public Utilities, Number Of Battery Energy Storage Facilities \| facility									4
Total certified amount \| $	$ 2,800												$ 2,800
Georgia Power \| SEGCO
Public Utilities, General Disclosures [Line Items]
Ownership percentage, equity method investment	50.00%												50.00%
Georgia Power \| Plant Scherer (coal) Unit 3
Public Utilities, General Disclosures [Line Items]
Percent Ownership	75.00%												75.00%
Georgia Power \| Plant Scherer (coal) Units 1 and 2
Public Utilities, General Disclosures [Line Items]
Percent Ownership	8.40%												8.40%
Georgia Power \| Plant Hatch Units 1 And 2
Public Utilities, General Disclosures [Line Items]
Percent Ownership	50.10%												50.10%
Georgia Power \| Plant Vogtle (nuclear) Units 1 and 2
Public Utilities, General Disclosures [Line Items]
Percent Ownership	45.70%												45.70%
Georgia Power \| ECCR
Public Utilities, General Disclosures [Line Items]
Regulatory asset amortization period	4 years												4 years
Approved rate decrease \| $													$ 60	$ 20
Compliance costs expected to be incurred \| $													$ 265	$ 300
Georgia Power \| 2022 Alternate Rate Plan
Public Utilities, General Disclosures [Line Items]
Retail rate of return on common equity	10.50%												10.50%
Equity rate of return on common equity	56.00%												56.00%
Portion of actual earnings above approved ROE band refunded to customers													40.00%
Portion of actual earnings above approved ROE band applied to reduce regulatory assets													40.00%
Portion of actual earnings above approved ROE band retained by subsidiary company													20.00%
Georgia Power \| 2019 Alternate Rate Plan
Public Utilities, General Disclosures [Line Items]
Retail rate of return on common equity																10.50%
Portion of actual earnings above approved ROE band refunded to customers																40.00%
Portion of actual earnings above approved ROE band applied to reduce regulatory assets																40.00%
Portion of actual earnings above approved ROE band retained by subsidiary company																20.00%
Customer refund liability in absence of base rate case \| $																			$ 117
Georgia Power \| Scenario, Forecast
Public Utilities, General Disclosures [Line Items]
Requested additional generating capacity (in MW)											228	380					230	750
Georgia Power \| Scenario, Forecast \| ECCR
Public Utilities, General Disclosures [Line Items]
Approved rate increase \| $												$ 123
Compliance costs expected to be incurred \| $												$ 330
Georgia Power \| Subsequent Event
Public Utilities, General Disclosures [Line Items]
Requested additional generating capacity (in MW)						1,100
Georgia Power \| Subsequent Event \| SEGCO
Public Utilities, General Disclosures [Line Items]
Requested additional generating capacity (in MW)						500
Georgia Power \| Subsequent Event \| Plant Scherer (coal) Unit 3
Public Utilities, General Disclosures [Line Items]
Requested additional generating capacity (in MW)						614
Georgia Power \| Subsequent Event \| Plant Scherer Unit 3
Public Utilities, General Disclosures [Line Items]
Requested additional generating capacity (in MW)						187
Georgia Power \| Subsequent Event \| Plant Bowen Units 1 Through 4
Public Utilities, General Disclosures [Line Items]
Requested additional generating capacity (in MW)						3,160
Georgia Power \| Subsequent Event \| Plant Scherer (coal) Units 1 and 2
Public Utilities, General Disclosures [Line Items]
Requested additional generating capacity (in MW)						137
Georgia Power \| Subsequent Event \| Plant McIntosh Units 10 And 11
Public Utilities, General Disclosures [Line Items]
Requested additional generating capacity (in MW)						1,319
Addition to nameplate capacity						194
Georgia Power \| Subsequent Event \| Plant McIntosh Units 1 Through 8
Public Utilities, General Disclosures [Line Items]
Requested additional generating capacity (in MW)						640
Addition to nameplate capacity						74
Georgia Power \| Subsequent Event \| Plant Hatch Units 1 And 2
Public Utilities, General Disclosures [Line Items]
Requested additional generating capacity (in MW)						900
Georgia Power \| Subsequent Event \| Plant Vogtle (nuclear) Units 1 and 2
Public Utilities, General Disclosures [Line Items]
Requested additional generating capacity (in MW)						1,060
Addition to nameplate capacity						112
Georgia Power \| Subsequent Event \| Plant Goat Rock Units 3 Through 6
Public Utilities, General Disclosures [Line Items]
Addition to nameplate capacity						16
Georgia Power \| Plant Yates
Public Utilities, General Disclosures [Line Items]
Number of turbines \| turbine														3
Approved additional generating capacity (in MW)				442
Georgia Power \| Plant Bowen Units 1 and 2
Public Utilities, General Disclosures [Line Items]
Approved additional generating capacity (in MW)														1,400
Georgia Power \| Customer Refunds \| 2019 Alternate Rate Plan
Public Utilities, General Disclosures [Line Items]
Portion of actual earnings above approved ROE band refunded to customers, value \| $																			$ 117
Alabama Power
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount \| $							$ 78
Percent Ownership	14.00%												14.00%
Alabama Power \| SEGCO
Public Utilities, General Disclosures [Line Items]
Ownership percentage, equity method investment	50.00%												50.00%
Alabama Power \| Subsequent Event \| SEGCO
Public Utilities, General Disclosures [Line Items]
Requested additional generating capacity (in MW)						500
Maximum \| Georgia Power
Public Utilities, General Disclosures [Line Items]
Requested additional generating capacity (in MW)		500			500				500
Maximum \| Georgia Power \| 2022 Alternate Rate Plan
Public Utilities, General Disclosures [Line Items]
Retail rate of return on common equity	11.90%												11.90%
Maximum \| Georgia Power \| 2019 Alternate Rate Plan
Public Utilities, General Disclosures [Line Items]
Retail rate of return on common equity															12.00%	12.00%
Maximum \| Georgia Power \| Subsequent Event
Public Utilities, General Disclosures [Line Items]
Requested additional generating capacity (in MW)						4,000
Maximum \| Georgia Power \| Plant Yates
Public Utilities, General Disclosures [Line Items]
Requested additional generating capacity (in MW)														1,400
Minimum \| Georgia Power \| 2022 Alternate Rate Plan
Public Utilities, General Disclosures [Line Items]
Retail rate of return on common equity	9.50%												9.50%
Minimum \| Georgia Power \| 2019 Alternate Rate Plan
Public Utilities, General Disclosures [Line Items]
Retail rate of return on common equity																9.50%