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INCOME TAXES - Federal ITC/PTC Carryforwards (Details) - ITC and PTC carryforwards $ in Millions | Dec. 31, 2023 USD ($)
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Operating Loss Carryforwards [Line Items] |
Federal ITC/PTC carryforwards | $ 829
Alabama Power |
Operating Loss Carryforwards [Line Items] |
Federal ITC/PTC carryforwards | 12
Georgia Power |
Operating Loss Carryforwards [Line Items] |
Federal ITC/PTC carryforwards | 131
Southern Power |
Operating Loss Carryforwards [Line Items] |
Federal ITC/PTC carryforwards | $ 481

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- Definition The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-3 + Details
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