Asset Retirement Obligation, Agreed Funding Period

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- Definition

Asset Retirement Obligation, Discount Rate

+ References

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- Definition

Asset Retirement Obligation, Escrow Deposit

+ References

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- Definition

Asset Retirement Obligation, Recognition Period

+ References

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- Definition

Cash Payments To Escrow Deposit For Surety Bond

+ References

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- Definition

Amount of increase (decrease) in asset retirement obligations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 410
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481850/410-20-50-1

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- Definition

Amount of increase (decrease) in the asset retirement obligation from changes in the amount or timing of the estimated cash flows associated with the settlement of the obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 410
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)(4)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481850/410-20-50-1

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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

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ASSET RETIREMENT OBLIGATIONS - Narrative (Details) - USD ($) $ in Millions			3 Months Ended	12 Months Ended
	Mar. 04, 2025	Feb. 03, 2025	Jun. 30, 2025	Dec. 31, 2024
Segment Reporting Information [Line Items]
Changes in timing and amount of estimated cash flows				$ 131
Cash payments to escrow deposit	$ 15		$ 31
JERSEY CENTRAL POWER & LIGHT COMPANY
Segment Reporting Information [Line Items]
Changes in timing and amount of estimated cash flows				0
Environmental Liability
Segment Reporting Information [Line Items]
Asset retirement obligation, escrow deposit	$ 130	$ 160	$ 31	$ 160
Agreed funding period	5 years	5 years		5 years
Asset retirement obligation, discount rate	4.80%
Recognition period	5 years
Environmental Liability \| Weighted Average
Segment Reporting Information [Line Items]
Asset retirement obligation, discount rate	4.80%
Regulation of Waste Disposal
Segment Reporting Information [Line Items]
Changes in timing and amount of estimated cash flows				$ 139
Regulation of Waste Disposal \| JERSEY CENTRAL POWER & LIGHT COMPANY
Segment Reporting Information [Line Items]
Changes in timing and amount of estimated cash flows				0
Corporate Non Segment
Segment Reporting Information [Line Items]
Changes in timing and amount of estimated cash flows				$ 87