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Income Taxes (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Income Tax Contingency [Line Items]
Effective tax (benefit) rate	18.50%	10.70%
Unrecognized tax positions	$ 73		$ 116
ALABAMA POWER CO
Income Tax Contingency [Line Items]
Effective tax (benefit) rate	21.00%	3.90%
GEORGIA POWER CO
Income Tax Contingency [Line Items]
Effective tax (benefit) rate	18.40%	15.80%
Unrecognized tax positions	$ 34		$ 77
MISSISSIPPI POWER CO
Income Tax Contingency [Line Items]
Effective tax (benefit) rate	18.40%	15.20%

X

- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
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- Definition

Amount of unrecognized tax benefits.

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-Topic 740
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-Paragraph 217
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