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- Definition

Regulated Operating Revenue, Refund Payments, Net

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Regulatory matters.

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Utilities Capital Assets Reclassified Into Earnings

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- Definition

Utilities Cooperate Support

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Utilities Operating Expense, Net

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- Definition

Utilities Reclassification To Operating Expense

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- Definition

Utilities Reduction In Operating Expense

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- Definition

Utilities, Transmission Owning Utilities Join An RTO

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- Definition

Discloses the amount of any reduction to the carrying amounts of regulated assets that result from impairment (for example, rate actions of a regulator).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 980
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-URI https://asc.fasb.org//1943274/2147481970/980-340-35-1

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Percentage of public utility's approved debt to capital, including debt and equity.

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Percentage of public utility's approved equity to capital, including debt and equity.

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Percentage of public utility's approved return on equity.

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- Definition

Amount of operating expense of regulated operation.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
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-Section S99
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REGULATORY MATTERS - Reliability and FERC Matters (Details) $ in Millions		3 Months Ended	12 Months Ended
	Feb. 24, 2022	Dec. 31, 2022 USD ($)	Dec. 31, 2023 USD ($)
FE \| Transmission Related Vegetation Management Programs \| FERC
Regulatory Matters [Line Items]
Refund payments		$ 45
Refund payments, net		34
Capital assets reclassified into earnings		195
Utilities operating expense		90
Utilities operating expense, net		67
Utilities reclassification to operating expense		105	$ 13
Utilities reduction in operating expense		160
Utilities cooperate support		$ 310
Utilities, transmission owing utilities join an RTO	0.00500000
JCP&L
Regulatory Matters [Line Items]
Approved ROE			9.60%
Allowed debt			48.60%
Approved capital structure			51.40%
MP
Regulatory Matters [Line Items]
Allowed debt			54.00%
Approved capital structure			46.00%
WP
Regulatory Matters [Line Items]
Allowed debt			49.70%
Approved capital structure			50.30%
Regulated Transmission \| FERC
Regulatory Matters [Line Items]
Pre-tax impairment of regulatory asset			$ 25
Regulated Transmission \| ATSI
Regulatory Matters [Line Items]
Approved ROE			10.38%
Regulated Transmission \| JCP&L
Regulatory Matters [Line Items]
Approved ROE			10.20%
Regulated Transmission \| MP
Regulatory Matters [Line Items]
Approved ROE			10.45%
Allowed debt			56.00%
Regulated Transmission \| PE
Regulatory Matters [Line Items]
Approved ROE			10.45%
Allowed debt			56.00%
Regulated Transmission \| WP
Regulatory Matters [Line Items]
Approved ROE			10.45%
Allowed debt			56.00%
Regulated Transmission \| MAIT
Regulatory Matters [Line Items]
Approved ROE			10.30%
Allowed debt			60.00%
Regulated Transmission \| TrAIL \| All Other Projects
Regulatory Matters [Line Items]
Approved ROE			11.70%
Regulated Transmission \| TrAIL \| TrAIL the Line and Black Oak SVC
Regulatory Matters [Line Items]
Approved ROE			12.70%