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Amount, after effects of reinsurance, of increase (decrease) in the liability for unpaid claims and claims adjustment expense.

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Amount of public utility's approved rate increase (decrease) by regulatory agency.

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Percentage of public utility's approved rate increase (decrease) by regulatory agency.

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Amount of public utility's requested rate increase (decrease) with regulatory agency.

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Percentage of public utility's requested rate increase (decrease) with regulatory agency.

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Period of amortization for recovery of regulatory asset, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Regulatory Matters - Georgia Power (Details) - GEORGIA POWER CO $ in Millions									1 Months Ended	6 Months Ended
	Jun. 09, 2026 MW	Jun. 02, 2026 project MW	May 28, 2026 USD ($)	Mar. 25, 2026 MW	Jan. 01, 2026 USD ($)	Dec. 31, 2025 USD ($)	Dec. 19, 2025 MW	May 14, 2025 USD ($)	May 31, 2023 USD ($)	Jun. 30, 2026 USD ($) MW
Public Utilities, General Disclosures [Line Items]
Capital costs \| $										$ 4,400
Total certified amounts \| $										$ 19,500
Approved capacity increase (in MWs)							9,885
Generating capacity petitioned for decertification (at least)				757
Approved affiliate PPAs \| project		2
Requested revenues increase (decrease) percentage			(12.90%)
Requested rate increase amount \| $			$ (394)
Fuel cost recovery rate adjustment period			30 days
Storm damage reserves \| $					$ 31	$ 156
Recovery period						67 months
Regulatory liability \| $			$ 77			$ 869
First PPA
Public Utilities, General Disclosures [Line Items]
Approved capacity increase (in MWs)		638
Second PPA
Public Utilities, General Disclosures [Line Items]
Approved capacity increase (in MWs)		74
Plant Bowen Unit 8
Public Utilities, General Disclosures [Line Items]
Approximate nameplate capacity										741
Plant Wansley Unit 10
Public Utilities, General Disclosures [Line Items]
Approximate nameplate capacity										727
Minimum
Public Utilities, General Disclosures [Line Items]
Approved capacity increase (in MWs)	2,000
Maximum
Public Utilities, General Disclosures [Line Items]
Approved rate increase (decrease) \| $								$ 200
Approved capacity increase (in MWs)	6,000
Requested rate increase amount \| $									$ 300
Approved rate increase (decrease)									40.00%