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This represents the current portion.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 falsefalseBondable stranded costs60false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://firstenergycorp.com/role/disclosurevariableinterestentitiesdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse15falsefalsetruefalse{us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis} : Path Wv [Member] 1/1/2011 - 3/31/2011 ThreeMonthsEnded_31Mar2011_Path_Wv_Memberhttp://www.sec.gov/CIK0001031296duration2011-01-01T00:00:002011-03-31T00:00:00falsefalsePATH-WVus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldife_PathWvMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli0OthernaNo definition available.No authoritative reference available.falsefalsePATH-WV61true0fe_NetExposureToLossBasedUponCasualtyValueProvisionsAbstractfefalsenadurationNet exposure to loss based upon casualty value provisions.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNet exposure to loss based upon casualty value provisions.falsefalseNet exposure to loss based upon the casualty value provisions62false0fe_VariableInterestEntitiesPercentageOfHighVoltageTransmissionLineProjectOwnedByVariableInterestEntityOneInJointVenturePartyOnefefalsenadurationVariable Interest Entities Percentage Of high voltage transmission line project owned By variable interest entity one in...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruefalse11falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherus-types:percentItemTypepureVariable Interest Entities Percentage Of high voltage transmission line project owned By variable interest entity one in joint venture party one.No authoritative reference available.falsefalsePercentage of high-voltage transmission line project owned by subsidiary of AE on the Allegheny Series63false0fe_VariableInterestEntitiesPercentageOfHighVoltageTransmissionLineProjectOwnedByVariableInterestEntityOneInJointVenturePartyTwofefalsenadurationVariable Interest Entities Percentage of high voltage transmission line project owned By variable interest entity one in...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruefalse0.500.50falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherus-types:percentItemTypepureVariable Interest Entities Percentage of high voltage transmission line project owned By variable interest entity one in joint venture party two.No authoritative reference available.falsefalsePercentage of high-voltage transmission line project owned by subsidiary of AE on the West Virginia Series253Variable Interest Entities (Details) (USD $)NoRoundingUnKnownUnKnownUnKnowntruetrue