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COMMITMENTS, GUARANTEES AND CONTINGENCIES - Potential Collateral Obligations (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2024 USD ($)
Guarantor Obligations [Line Items] |
Potential additional collateral obligations | $ 923
Percent of face amount of debt | 100.00%
Curing period | 30 days
Credit Risk Contractual Obligation |
Guarantor Obligations [Line Items] |
Potential additional collateral obligations | $ 224
Credit Risk Contractual Obligation | FE |
Guarantor Obligations [Line Items] |
Potential additional collateral obligations | 50
Credit Risk Contractual Obligation | Electric Companies and Transmission Companies |
Guarantor Obligations [Line Items] |
Potential additional collateral obligations | 174
Upon Further Downgrade |
Guarantor Obligations [Line Items] |
Potential additional collateral obligations | 78
Upon Further Downgrade | FE |
Guarantor Obligations [Line Items] |
Potential additional collateral obligations | 1
Upon Further Downgrade | Electric Companies and Transmission Companies |
Guarantor Obligations [Line Items] |
Potential additional collateral obligations | 77
Surety Bonds (collateralized amount) |
Guarantor Obligations [Line Items] |
Potential additional collateral obligations | $ 146
Percent of face amount of debt | 60.00%
Capped portion of surety bond obligations | $ 38
Surety Bonds (collateralized amount) | FE |
Guarantor Obligations [Line Items] |
Potential additional collateral obligations | 49
Surety Bonds (collateralized amount) | Electric Companies and Transmission Companies |
Guarantor Obligations [Line Items] |
Potential additional collateral obligations | $ 97

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