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DERIVATIVES AND HEDGING - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Cash collateral received from third-parties | $ 87.0 | $ 46.0
Fair value of derivative liability subject to cross-acceleration | 72.0 | 107.0
Fair value of derivative liability, subject to cross-default provision | 164.0 | 242.0
APCo |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Fair value of derivative liability, subject to cross-default provision | 1.0 | 22.0
PSO |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Fair value of derivative liability, subject to cross-default provision | 4.0 | 29.0
SWEPCo |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Fair value of derivative liability, subject to cross-default provision | $ 2.0 | $ 15.0
Commodity |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Maximum length of time to hedge exposure to variability | 10 years |
Cross-acceleration provisions, maximum third-party obligation, amount | $ 50.0 |
Cross-default trigger, maximum third party obligation, amount | $ 50.0 |

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- Definition Maximum period of hedging exposure to variability in future cash flows for forecasted transaction of price risk cash flow hedge, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Excludes forecasted transaction for payment of variable interest on existing financial instrument. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -SubTopic 30 -Topic 815 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480870/815-30-50-1 + Details
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- Definition The carrying value as of the balance sheet date of the assets received as collateral against securities loaned to other broker-dealers. Borrowers of securities generally are required to provide collateral to the lenders of securities, commonly cash but sometimes other securities or standby letters of credit, with a value slightly higher than that of the securities borrowed. In instances where the entity is permitted to sell or re-pledge these securities, the entity reports the fair value of the collateral received and the related obligation to return the collateral as a liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Subparagraph (b)(1) -SubTopic 30 -Topic 860 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481420/860-30-50-1A + Details
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