Cash Consideration received in Asset Swap

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- Definition

Fair Value Inputs, Excess of Fair Value over Carrying Value, Percent

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- Definition

Fair Value Inputs, Terminal Multiple

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- Definition

Amount, net of accumulated depreciation of long-lived physical assets, excluding construction in progress, used in the normal conduct of business and not intended for resale.

+ References

No definition available.

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- Definition

Plant Capacity

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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

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-Publisher FASB

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-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 45

-Paragraph 4

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- Definition

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

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-Publisher FASB

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-SubTopic 10

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-Paragraph 2

-Subparagraph (bbb)

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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-Publisher FASB

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-Section 50

-Paragraph 1

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-SubTopic 20

-Section 45

-Paragraph 1

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- Definition

The increase (decrease) during the reporting period in regulated liabilities. Regulated liabilities are created when regulatory agency permits an entity to defer revenues to the balance sheet.

+ References

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- Definition

Amount of interest capitalized during the period.

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Allowance for Funds Used during Construction

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-Name Accounting Standards Codification

-Topic 835

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)

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- Definition

The proportionate share of interest (percent) in a jointly owned utility plant.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 980

-SubTopic 360

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 10.C)

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 10

-Section C

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- Definition

The amount of debt that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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- Definition

The level of ownership or equity interest acquired in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

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- Definition

The net book value of a nonmonetary asset transferred or exchanged in connection with the acquisition of a business or asset in a noncash transaction. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Nonmonetary assets and liabilities are assets and liabilities that will not result in cash receipts or cash payments in the future.

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- Definition

The carrying amount as of the balance sheet of nuclear fuel held as property plant and equipment. This amount is net of amortization based on the energy produced over the life of the fuel.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.13(b))

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- Definition

The amount of other than temporary impairment losses on investments in debt and equity securities categorized as Available-for-sale which have been recognized in earnings during the period. Such impairment losses consist of other than temporary impairments (OTTI) on equity securities, credit losses on investments in debt securities, and when the entity intends to sell an impaired debt security or it is more likely than not that the entity will be required to sell the impaired debt security before recovery of its amortized cost basis.

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-Topic 320

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- Definition

The component of the allowance for funds used during construction during the period based on an assumed rate of return on equity funds used in financing the construction of regulated assets.

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-Publisher FASB

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- Definition

Period end amount of property, plant and equipment (PPE) related to transmission and distribution owned by public utility.

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No definition available.

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The amount for the individual regulatory noncurrent liability as itemized in a table of regulatory noncurrent liabilities as of the end of the period.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

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-Subparagraph (SX 210.5-02.24)

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- Definition

Remaining balance of regulatory assets for which no return on investment during recovery is provided. In some cases, a regulator may permit an enterprise to include a cost that would be charged to expense by an unregulated enterprise as an allowable cost over a period of time by amortizing that cost for rate-making purposes, but the regulator does not include the unrecovered amount in the rate base.

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Organization, Basis of Presentation and Significant Accounting Policies (Details Textuals) (USD $)	0 Months Ended	3 Months Ended	12 Months Ended			0 Months Ended	3 Months Ended
	Jul. 31, 2014	Jun. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Oct. 09, 2013	Dec. 31, 2013	Dec. 31, 2014
Regulatory Assets [Line Items]
Capitalized financing costs			$ 49,000,000	$ 28,000,000	$ 18,000,000
Interest costs capitalized			69,000,000us-gaap_InterestCostsCapitalized	75,000,000us-gaap_InterestCostsCapitalized	72,000,000us-gaap_InterestCostsCapitalized
Regulatory assets that do not earn a current return			488,000,000	477,000,000			477,000,000	488,000,000
Net regulatory liabilities			243,000,000us-gaap_RegulatoryLiabilityNoncurrent	440,000,000us-gaap_RegulatoryLiabilityNoncurrent			440,000,000us-gaap_RegulatoryLiabilityNoncurrent	243,000,000us-gaap_RegulatoryLiabilityNoncurrent
Cost of nuclear fuel			2,000,000,000us-gaap_NuclearFuelNetOfAmortization					2,000,000,000us-gaap_NuclearFuelNetOfAmortization
Net plant in service			33,334,000,000	30,948,000,000			30,948,000,000	33,334,000,000
Impairments of long-lived assets		473,000,000us-gaap_AssetImpairmentCharges	0us-gaap_AssetImpairmentCharges	795,000,000us-gaap_AssetImpairmentCharges	0us-gaap_AssetImpairmentCharges
Goodwill			6,418,000,000us-gaap_Goodwill	6,418,000,000us-gaap_Goodwill	6,447,000,000us-gaap_Goodwill		6,418,000,000us-gaap_Goodwill	6,418,000,000us-gaap_Goodwill
Excess of fair value over carrying value (percent)	10.00%
Discount rate	8.50%us-gaap_FairValueInputsDiscountRate
Terminal multiple	7.0fe_FairValueInputsTerminalMultiple
Other than temporary impairments			37,000,000	90,000,000	16,000,000
Bath County, Virginia
Regulatory Assets [Line Items]
Plant generation capacity			3,003					3,003
Storm-related costs
Regulatory Assets [Line Items]
Regulatory assets that do not earn a current return			360,000,000					360,000,000
Inventories
Regulatory Assets [Line Items]
Impairments of long-lived assets		13,000,000
Regulated Distribution
Regulatory Assets [Line Items]
Property, Plant and Equipment, Net			2,000,000,000					2,000,000,000
Plant generation capacity						3,790
Net plant in service			17,214,000,000	16,584,000,000			16,584,000,000	17,214,000,000
Goodwill			5,092,000,000	5,092,000,000	5,025,000,000		5,092,000,000	5,092,000,000
Competitive Energy Services
Regulatory Assets [Line Items]
Plant generation capacity			14,068					14,068
Net plant in service			10,844,000,000	10,118,000,000			10,118,000,000	10,844,000,000
Goodwill			800,000,000	800,000,000	896,000,000		800,000,000	800,000,000
AE Supply
Regulatory Assets [Line Items]
Percent of ownership interest acquired						8.00%
Value of interest acquired						73,000,000
Cash consideration received in asset swap transaction							1,100,000,000
Assumption of pollution control note						73,500,000
MP
Regulatory Assets [Line Items]
Percent of ownership interest acquired						80.00%
Value of interest acquired						1,200,000,000
Impairments of long-lived assets								322,000,000
Regulatory liability								23,000,000
AGC \| Bath County, Virginia
Regulatory Assets [Line Items]
Pumped storage hydroelectric station, Ownership percentage			40.00%					40.00%
Plant generation capacity			1,200					1,200
Net plant in service			686,000,000					686,000,000
Virginia Electric and Power Company \| Bath County, Virginia
Regulatory Assets [Line Items]
Pumped storage hydroelectric station, Ownership percentage			60.00%					60.00%
FES
Regulatory Assets [Line Items]
Net plant in service			8,388,000,000	7,717,000,000			7,717,000,000	8,388,000,000
Goodwill			23,000,000	23,000,000			23,000,000	23,000,000
Other than temporary impairments			$ 33,000,000	$ 79,000,000	$ 14,000,000