Effective Income Tax Rate Reconciliation, Change in Accounting Method

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- Definition

Increase (Decrease) In Income From Continuing Operations

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- Definition

Pre-tax net operating loss carryforwards expected to utilized.

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- Definition

Reduction in effective tax rate.

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- Definition

Unrecognized Tax Benefits, Portion Expected To Be Resolved in the Next Fiscal Year

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No definition available.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Deferred Tax Asset

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are not subject to expiration dates.

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No definition available.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are subject to expiration dates.

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- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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-Publisher FASB

-Name Accounting Standards Codification

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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-Publisher FASB

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Amount of increase (decrease) to previously recorded tax expense. Includes, but is not limited to, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, and IRS tax settlement.

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Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

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-Publisher FASB

-Name Accounting Standards Codification

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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Taxes (Details Textuals) (USD $)	3 Months Ended	12 Months Ended
Taxes (Details Textuals) (USD $)	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes (Textuals) [Abstract]
Effective income tax rate (percent)		(24.60%)	34.20%	42.00%
Federal Income Tax Expense (Benefit), Continuing Operations		$ 399,000,000
Change in accounting method		(27,000,000)	0	0
Tax basis balance sheet adjustments	(16,000,000)	25,000,000
Deferred tax assets, gross	1,500,000,000us-gaap_DeferredTaxAssetsGross	1,500,000,000us-gaap_DeferredTaxAssetsGross
Pre-tax net operating loss carryforwards for state and local income tax purposes	9,900,000,000us-gaap_OperatingLossCarryforwards	9,900,000,000us-gaap_OperatingLossCarryforwards
Pre-tax net operating loss carryforwards expected to utilized	5,600,000,000	5,600,000,000
Unrecognized tax benefits	34,000,000us-gaap_UnrecognizedTaxBenefits	34,000,000us-gaap_UnrecognizedTaxBenefits	48,000,000us-gaap_UnrecognizedTaxBenefits	43,000,000us-gaap_UnrecognizedTaxBenefits	117,000,000us-gaap_UnrecognizedTaxBenefits
Unrecognized tax benefits, portion expected to be resolved in the next fiscal year	10,000,000	10,000,000
Reduction in effective tax rate		6,000,000fe_ReductionInEffectiveTaxRate		4,000,000fe_ReductionInEffectiveTaxRate
Federal
Income Taxes (Textuals) [Abstract]
Operating loss carryforwards, not subject to expiration	25,000,000	25,000,000
State and Local
Income Taxes (Textuals) [Abstract]
Expiration of statute of limitations		33,000,000
Operating loss carryforwards, subject to expiration	413,000,000	413,000,000
FES
Income Taxes (Textuals) [Abstract]
Effective income tax rate (percent)		38.80%	11.50%	37.30%
Unrecognized tax benefits	$ 3,000,000	$ 3,000,000	$ 3,000,000	$ 3,000,000	$ 45,000,000