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

Cross Acceleration Provisions Maximum Third Party Obligation Amount

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- Definition

Non-exchange traded commodity contracts containing cross-default provisions

+ References

No definition available.

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- Definition

Fair Value Of Derivative Liabilities Subject To Cross Acceleration Provisions

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- Definition

Fair value of derivative liabilities subject to cross-default provisions.

+ References

No definition available.

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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.

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No definition available.

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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

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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

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