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- Definition

Public Utilities, Approved Return On Equity Prior To Reduction Percentage

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- Definition

Public Utilities, Approved Return On Equity, Reduction Percentage

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- Definition

Public Utilities, Number Of Unresolved Audit Matters Referred To Other Offices

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- Definition

Regulated Operating Revenue, Refund Payments

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- Definition

Regulated Operating Revenue, Refund Payments, Net

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- Definition

Regulatory matters.

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- Definition

Utilities, Basis Point Adder Associated With RTO Membership

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- Definition

Utilities Capital Assets Reclassified Into Earnings

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- Definition

Utilities Corporate Support

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- Definition

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

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

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- Definition

Percentage of public utility's approved return on equity.

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- Definition

Amount of operating expense of regulated operation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(2)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

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REGULATORY MATTERS - Reliability and FERC Matters (Details) $ in Millions				3 Months Ended		12 Months Ended
	Jan. 17, 2025	Dec. 08, 2023 auditMatter	Feb. 24, 2022	Dec. 31, 2024 USD ($)	Sep. 30, 2022 USD ($)	Dec. 31, 2024 USD ($)
Transmission ROE Incentive \| FERC
Regulatory Matters [Line Items]
Public utilities, amount awarded from other party				$ 46
Transmission ROE Incentive \| FERC \| Miscellaneous Income
Regulatory Matters [Line Items]
Public utilities, amount awarded from other party				4
Transmission ROE Incentive \| FERC \| Subsequent Event
Regulatory Matters [Line Items]
Utilities, transmission owing utilities join an RTO	0.00500000
Transmission ROE Incentive \| FERC \| Transmission \| Transmission Revenues
Regulatory Matters [Line Items]
Public utilities, amount awarded from other party				$ 42
FE \| Transmission Related Vegetation Management Programs \| FERC
Regulatory Matters [Line Items]
Utilities, transmission owing utilities join an RTO			0.00500000
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
Utilities reduction in operating expense						160
Utilities cooperate support						$ 100
Public utilities, number of unresolved audit matters referred to other offices \| auditMatter		2
JCP&L
Regulatory Matters [Line Items]
Allowed ROE						9.60%
Allowed debt						48.10%
Integrated \| ATSI
Regulatory Matters [Line Items]
Allowed ROE						9.88%
Demand reduction targets				0.50%		0.50%
Approved ROE prior to demand reduction targets						10.38%
Utilities, transmission owing utilities join an RTO						0.0050
Integrated \| JCP&L
Regulatory Matters [Line Items]
Allowed ROE						10.20%
Integrated \| MP
Regulatory Matters [Line Items]
Allowed ROE						10.45%
Allowed debt						56.00%
Integrated \| PE
Regulatory Matters [Line Items]
Allowed ROE						10.45%
Allowed debt						56.00%
Integrated \| KATCo
Regulatory Matters [Line Items]
Allowed ROE						10.45%
Integrated \| MAIT
Regulatory Matters [Line Items]
Allowed ROE						10.30%
Allowed debt						60.00%
Integrated \| TrAIL \| TrAIL the Line and Black Oak SVC
Regulatory Matters [Line Items]
Allowed ROE						12.70%
Integrated \| TrAIL \| All Other Projects
Regulatory Matters [Line Items]
Allowed ROE						11.70%