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- Definition

Asset Acquisition, Ownership Interest Acquired

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- Definition

Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets

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- Definition

Expenditures for cost recovery program.

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- Definition

Incremental Energy Savings Goal, Percent

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- Definition

Incremental Energy Savings Goal, Thereafter, Percent

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- Definition

Plant Capacity

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- Definition

Public Utilities, Approved Annual Rate Increase (Decrease), Amount

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- Definition

Public Utilities, Approved Planned Capital Expenditures

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- Definition

Public Utilities, Approved Rate Number of Rate Adjustments

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- Definition

Public Utilities, Enhanced Service Reliability Program, Period to File New Depreciation Study

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No definition available.

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- Definition

Public Utilities, Enhanced Service Reliability Program, Rate Case Renewal Period

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No definition available.

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- Definition

Public Utilities, Enhanced Service Reliability Program Term

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- Definition

Public Utilities, Expected Cost of the Program

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No definition available.

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- Definition

Public Utilities, Meter Deployment Period

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No definition available.

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- Definition

Public Utilities, Meter Deployment Program Period

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No definition available.

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- Definition

Public Utilities, Number of Meters to be Deployed

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No definition available.

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- Definition

Public Utilities, Number of Approved Enhanced Service Reliability Programs

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No definition available.

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- Definition

Public Utilities, Number of Enhanced Service Reliability Programs

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- Definition

Public Utilities, Requested Electric Vehicle Program, Charging Equipment Rebates Amortization Period

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No definition available.

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- Definition

Public Utilities, Requested Electric Vehicle Program, Cost of Charging Equipment Rebates

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- Definition

Public Utilities, Requested Rate Increase, Increase in Depreciation Rate

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No definition available.

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- Definition

Public Utilities, Requested Rate Increase, Revised Increase Due Effects of 2017 Tax Cuts and Jobs Act

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No definition available.

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- Definition

Public Utilities, Settled Decrease In Regulatory Liability

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No definition available.

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- Definition

Public Utilities, Settled Revenue Increase, Amount

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- Definition

Recovery period for expenditures for cost recovery program.

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No definition available.

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- Definition

Recovery Program, Amortization Period

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- Definition

Regulatory matters.

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- Definition

Amount of public utility's approved rate increase (decrease) by regulatory agency.

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Amount of public utility's requested rate increase (decrease) with regulatory agency.

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Percentage of public utility's requested rate increase (decrease) with regulatory agency.

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- Definition

Percentage of public utility's requested return on equity.

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Regulatory Matters - Maryland and New Jersey (Details) meter in Millions, $ in Millions													9 Months Ended
	Oct. 16, 2020 USD ($)	Sep. 25, 2020 USD ($)	Sep. 22, 2020	Sep. 01, 2020 USD ($)	Aug. 27, 2020 USD ($) meter	Jun. 02, 2020 USD ($)	Apr. 06, 2020 USD ($) MW	Feb. 18, 2020 USD ($)	May 08, 2019 USD ($) rate_adjustment	Mar. 22, 2019 USD ($) program	Aug. 24, 2018 USD ($) program	Jan. 19, 2018 USD ($)	Sep. 30, 2020 USD ($) MW
Regulated Distribution
Regulatory Matters [Line Items]
Plant capacity (in MW's) \| MW													3,790
PE \| Maryland
Regulatory Matters [Line Items]
Incremental energy savings goal per year (percent)													0.20%
Incremental energy savings goal thereafter (percent)													2.00%
Recovery period for expenditures for cost recovery program				3 years									3 years
Expenditures for cost recovery program													$ 116.0
Amortization period													5 years
Amount of requested rate increase (decrease)				$ 148.0
PE \| MPSC \| Maryland
Regulatory Matters [Line Items]
Amount of requested rate increase (decrease)											$ 19.7
Cost of charging equipment rebates												$ 12.0
Charging equipment rebates amortization period												5 years
Number of enhanced service reliability programs \| program											4
Approved amount of annual increase (decrease)											$ 17.6
Revised requested rate increase											$ 7.3
Amount of approved annual rate increase										$ 6.2
Number of enhanced service reliability programs \| program										3
Enhanced service reliability program term										4 years
Period to file new depreciation study										18 months
Enhanced service reliability program renewal period										4 years
PE \| MPSC \| Maryland \| Maximum
Regulatory Matters [Line Items]
Increase in depreciation rate			1.00%
JCP&L \| New Jersey
Regulatory Matters [Line Items]
Amount of requested rate increase (decrease) (percent)								7.80%
JCP&L \| Advanced Metering Infrastructure \| New Jersey \| Regulated Distribution
Regulatory Matters [Line Items]
Amount of requested rate increase (decrease)					$ 732.0
JCP&L \| NJBPU \| New Jersey
Regulatory Matters [Line Items]
Amount of requested rate increase (decrease)						$ 185.0		$ 186.9
JCP&L \| NJBPU \| New Jersey \| Subsequent Event
Regulatory Matters [Line Items]
Requested increase to ROE	9.60%
Amount of revenue increase	$ 94.0
Decrease in regulatory liability	$ 86.0
JCP&L \| NJBPU \| JCP&L Reliability Plus \| New Jersey
Regulatory Matters [Line Items]
Planned capital expenditures									$ 97.0
Processes for rate adjustments \| rate_adjustment									2
JCP&L \| NJBPU \| Advanced Metering Infrastructure \| New Jersey \| Regulated Distribution
Regulatory Matters [Line Items]
Meter deployment period					3 years
Number of meters to be deployed \| meter					1.2
Expected cost of the program					$ 418.0
Time period of the program					20 years
JCP&L \| NJBPU \| Energy Efficiency and Peak Demand Reduction \| New Jersey \| Regulated Distribution
Regulatory Matters [Line Items]
Amount of requested rate increase (decrease)		$ 230.0
Yard's Creek Energy \| Regulated Distribution
Regulatory Matters [Line Items]
Ownership interest acquired													50.00%
Plant capacity (in MW's) \| MW													210
Yard's Creek Energy \| JCP&L \| New Jersey
Regulatory Matters [Line Items]
Plant capacity (in MW's) \| MW							210
Purchase price							$ 155.0
Yard's Creek Energy \| JCP&L \| New Jersey \| Regulated Distribution
Regulatory Matters [Line Items]
Book value													$ 44.0
Yard's Creek Energy \| JCP&L \| NJBPU \| New Jersey
Regulatory Matters [Line Items]
Ownership interest acquired							50.00%