Electric Generating Units, Capacity

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- Definition

Share Of Purchased Power

+ References

No definition available.

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- Definition

Amount of distribution received from equity method investee for return on investment, classified as operating activities. Excludes distribution for return of investment, classified as investing activities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
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-Topic 230
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
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-Name Accounting Standards Codification
-Section S99
-Paragraph 1
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-Publisher FASB
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-Name Accounting Standards Codification
-Section 45
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-SubTopic 10
-Topic 230
-Publisher FASB
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
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-Name Accounting Standards Codification
-Section S99
-Paragraph 2
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481687/323-10-50-3

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- Definition

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.

+ References

No definition available.

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- Definition

The proportionate share of interest (percent) in a jointly owned utility plant.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 980
-SubTopic 360
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 10.C)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479070/980-360-S99-1

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CONSOLIDATED ENTITIES AND EQUITY METHOD INVESTMENTS - SEGCO Equity Method Investments Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($) MW	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Alabama Power
Jointly Owned Utility Plant Interests [Line Items]
Percent ownership	14.00%
Alabama Power \| SEGCO
Jointly Owned Utility Plant Interests [Line Items]
Ownership percentage, equity method investment	50.00%
Alabama Power \| SEGCO
Jointly Owned Utility Plant Interests [Line Items]
Total megawatt capacity (in MWs) \| MW	1,020
Share of purchased power	$ 115	$ 112	$ 124
Dividends paid by equity method investment	$ 20	25	14
Georgia Power \| SEGCO
Jointly Owned Utility Plant Interests [Line Items]
Ownership percentage, equity method investment	50.00%
Georgia Power \| SEGCO
Jointly Owned Utility Plant Interests [Line Items]
Share of purchased power	$ 118	$ 115	$ 127
SEGCO \| Alabama Power
Jointly Owned Utility Plant Interests [Line Items]
Percent ownership	86.00%