2.2.0.25truefalse0610 - Disclosure - Regulatory Matters (Details)truefalsefalse1falsefalseUSDfalsefalse1/1/2011 - 1/31/2011 OneMonthEnded_31Jan2011http://www.sec.gov/CIK0001031296duration2011-01-01T00:00:002011-01-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0MWHStandardhttp://firstenergycorp.com/2010-12-31MWHfe0$2falsefalsefalsefalse10/1/2010 - 10/31/2010 OneMonthEnded_31Oct2010http://www.sec.gov/CIK0001031296duration2010-10-01T00:00:002010-10-31T00:00:00PureStandardhttp://www.xbrl.org/2003/instancepurexbrli03falsefalsefalsefalse5/1/2009 - 5/31/2009 OneMonthEnded_31May2009http://www.sec.gov/CIK0001031296duration2009-05-01T00:00:002009-05-31T00:00:00PureStandardhttp://www.xbrl.org/2003/instancepurexbrli04falsefalsefalsefalse1/1/2013 - 12/31/2013 TwelveMonthsEnded_31Dec2013http://www.sec.gov/CIK0001031296duration2013-01-01T00:00:002013-12-31T00:00:00PureStandardhttp://www.xbrl.org/2003/instancepurexbrli05falsefalsefalsefalse1/1/2012 - 12/31/2012 TwelveMonthsEnded_31Dec2012http://www.sec.gov/CIK0001031296duration2012-01-01T00:00:002012-12-31T00:00:00PureStandardhttp://www.xbrl.org/2003/instancepurexbrli06falsefalsefalsefalse6/1/2011 - 5/31/2012 TwelveMonthsEnded_31May2012http://www.sec.gov/CIK0001031296duration2011-06-01T00:00:002012-05-31T00:00:00PureStandardhttp://www.xbrl.org/2003/instancepurexbrli07falsefalseUSDfalsefalse1/1/2011 - 12/31/2011 USD ($) $TwelveMonthsEnded_31Dec2011http://www.sec.gov/CIK0001031296duration2011-01-01T00:00:002011-12-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0MWHStandardhttp://firstenergycorp.com/2010-12-31MWHfe0USDUSD$8falsefalseUSDfalsefalse1/1/2010 - 12/31/2010 USD ($) USD ($) / shares $Jan-01-2010_Dec-31-2010http://www.sec.gov/CIK0001031296duration2010-01-01T00:00:002010-12-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDEPSDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0MWHStandardhttp://firstenergycorp.com/2010-12-31MWHfe0USDUSD$9falsefalseUSDfalsefalse1/1/2009 - 12/31/2009 USD ($) USD ($) / shares $TwelveMonthsEnded_31Dec2009http://www.sec.gov/CIK0001031296duration2009-01-01T00:00:002009-12-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDEPSDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$10falsefalsefalsefalse6/1/2011 - 5/31/2013 TwentyFourMonthsEnded_31May2013http://www.sec.gov/CIK0001031296duration2011-06-01T00:00:002013-05-31T00:00:00PureStandardhttp://www.xbrl.org/2003/instancepurexbrli011falsefalsefalsefalse6/1/2010 - 5/31/2014 FortyEightMonthsEnded_31May2014http://www.sec.gov/CIK0001031296duration2010-06-01T00:00:002014-05-31T00:00:00PureStandardhttp://www.xbrl.org/2003/instancepurexbrli02true0fe_RegulatoryMattersTextualsAbstractfefalsenadurationRegulatory Matters.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRegulatory Matters.falsefalseRegulatory Matters (Textuals)3false0fe_AverageDeliveryServiceImprovementRiderCollectionPerKilowattHoursfefalsedebitdurationAverage Delivery Service Improvement Rider Collection Per Kilowatt Hours.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8truefalsefalse0.0020.002falsetruefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAverage Delivery Service Improvement Rider Collection Per Kilowatt Hours.No authoritative reference available.falsefalseAverage Delivery Service Improvement Rider Collection Per Kilowatt Hours4false0fe_IncreaseElectricDistributionRatesfefalsedebitinstantIncrease electric distribution rates.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse136600000136600000falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryIncrease electric distribution rates.No authoritative reference available.falsefalseIncrease electric distribution rates5false0fe_GenerationDiscountForLowIncomeCustomersfefalsenadurationGeneration discount for low income customers.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsefalsefalse3falsetruefalse00falsefalsefalsefalsefalse4falsetruefalse00falsefalsefalsefalsefalse5falsetruefalse00falsefalsefalsefalsefalse6falsetruefalse00falsefalsefalsefalsefalse7falsetruefalse00falsefalsefalsefalsefalse8truetruefalse0.060.06falsefalsefalsefalsefalse9falsetruefalse00falsefalsefalsefalsefalse10falsetruefalse00falsefalsefalsefalsefalse11falsetruefalse00falsefalsefalsefalsefalseOtherus-types:percentItemTypepureGeneration discount for low income customers.No authoritative reference available.falsefalseGeneration discount for low income customers6false0fe_LoadCapfefalsenadurationLoad Cap related to new ESP.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsefalsefalse3falsetruefalse00falsefalsefalsefalsefalse4falsetruefalse00falsefalsefalsefalsefalse5falsetruefalse00falsefalsefalsefalsefalse6falsetruefalse00falsefalsefalsefalsefalse7falsetruefalse00falsefalsefalsefalsefalse8truetruefalse0.800.80falsefalsefalsefalsefalse9falsetruefalse00falsefalsefalsefalsefalse10falsetruefalse00falsefalsefalsefalsefalse11falsetruefalse00falsefalsefalsefalsefalseOtherus-types:percentItemTypepureLoad Cap related to new ESP.No authoritative reference available.falsefalseLoad Cap7false0fe_RegulatoryAssetImpairmentRelatedToElectricSecurityPlanfefalsecreditinstantRegulatory asset impairment related to Electric Security Plan.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8truefalsefalse3950000039500000falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryRegulatory asset impairment related to Electric Security Plan.No authoritative reference available.falsefalseRegulatory asset impairment related to Electric Security Plan8false0fe_CostsAvoidedByCustomersfefalsedebitdurationCosts avoided by customers.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8truefalsefalse360000000360000000falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCosts avoided by customers.No authoritative reference available.falsefalseCosts avoided by customers9false0fe_FundToAssistLowIncomeCustomersfefalsedebitdurationFund to assist low income customers.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8truefalsefalse1200000012000000falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryFund to assist low income customers.No authoritative reference available.falsefalseFund to assist low income customers10false0fe_TotalAnnualEnergySavingsfefalsenadurationTotal annual energy savings.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4truefalsefalse530000530000falsefalsefalsefalsefalse5truefalsefalse470000470000falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7truefalsefalse410000410000falsefalsefalsefalsefalse8truefalsefalse290000290000falsefalsefalsefalsefalse9truefalsefalse166000166000falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:integerItemTypeintegerTotal annual energy savings.No authoritative reference available.falsefalseTotal annual energy savings (in MWH)11false0fe_UtilitiesRequiredToReducePeakDemandfefalsenadurationUtilities required to reduce peak demand in 2009 in percentage.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsetruefalse00falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsefalsefalse3falsetruefalse00falsefalsefalsefalsefalse4falsetruefalse00falsefalsefalsefalsefalse5falsetruefalse00falsefalsefalsefalsefalse6falsetruefalse00falsefalsefalsefalsefalse7falsetruefalse00falsefalsefalsefalsefalse8truetruefalse0.010.01falsefalsefalsefalsefalse9falsetruefalse00falsefalsefalsefalsefalse10falsetruefalse00falsefalsefalsefalsefalse11falsetruefalse00falsefalsefalsefalsefalseOtherus-types:percentItemTypepureUtilities required to reduce peak demand in 2009 in percentage.No authoritative reference available.falsefalseUtilities required to reduce peak demand in 2009 (In Percentage)12false0fe_UtilitiesRequiredToReducePeakDemandFromTwoThousandTenToTwoThousandEighteenfefalsenadurationUtilities Required to Reduce Peak Demand From 2010 To 2018 in percentagefalsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsetruefalse00falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsefalsefalse3falsetruefalse00falsefalsefalsefalsefalse4falsetruefalse00falsefalsefalsefalsefalse5falsetruefalse00falsefalsefalsefalsefalse6falsetruefalse00falsefalsefalsefalsefalse7falsetruefalse00falsefalsefalsefalsefalse8truetruefalse0.00750.0075falsefalsefalsefalsefalse9falsetruefalse00falsefalsefalsefalsefalse10falsetruefalse00falsefalsefalsefalsefalse11falsetruefalse00falsefalsefalsefalsefalseOtherus-types:percentItemTypepureUtilities Required to Reduce Peak Demand From 2010 To 2018 in percentageNo authoritative reference available.falsefalseUtilities required to additional reduction in peak demand through 201813false0fe_LoadServedFromRenewableEnergyResourcesfefalsenadurationLoad Served From Renewable Energy Resources.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsefalsefalse3falsetruefalse00falsefalsefalsefalsefalse4falsetruefalse00falsefalsefalsefalsefalse5falsetruefalse00falsefalsefalsefalsefalse6falsetruefalse00falsefalsefalsefalsefalse7falsetruefalse00falsefalsefalsefalsefalse8falsetruefalse00falsefalsefalsefalsefalse9truetruefalse0.00250.0025falsefalsefalsefalsefalse10falsetruefalse00falsefalsefalsefalsefalse11falsetruefalse00falsefalsefalsefalsefalseOtherus-types:percentItemTypepureLoad Served From Renewable Energy Resources.No authoritative reference available.falsefalseLoad Served From Renewable Energy Resources14false0fe_ProjectedTransmissionCostfefalsedebitdurationProjected Transmission Cost.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8truefalsefalse252700000252700000falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryProjected Transmission Cost.No authoritative reference available.falsefalseTransmission cost projections15false0fe_AssessmentPeriodCostsfefalsedebitdurationAssessment period costs.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8truefalsefalse2950000029500000falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAssessment period costs.No authoritative reference available.falsefalseAssessment period costs16false0fe_ReplyCommentsInDaysfefalsenadurationReply comments in days.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8truefalsefalse3030falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:integerItemTypeintegerReply comments in days.No authoritative reference available.falsefalseReply comments (In Days)17false0fe_DeferredAccumulatedCostTotalfefalsecreditinstantDeferred accumulated cost, total.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8truefalsefalse3700000037000000falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryDeferred accumulated cost, total.No authoritative reference available.falsefalseDeferred accumulated cost, total18false0fe_DecreaseInAmountRecoveredForCostsIncurredfefalsecreditdurationDecrease in the amount recovered for costs incurred.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8truefalsefalse180000000180000000falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryDecrease in the amount recovered for costs incurred.No authoritative reference available.falsefalseDecrease in amount recovered for costs incurred19false0fe_AnnualRevenueRequirementsInZonefefalsecreditdurationAnnual Revenue Requirements In ATSI Zone related to Michigan Thumb Project.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7truefalsefalse1100000011000000falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAnnual Revenue Requirements In ATSI Zone related to Michigan Thumb Project.No authoritative reference available.falsefalseAnnual Revenue Requirements In Zone20false0fe_RevisedDecommisioningCostsfefalsedebitdurationRevised decommisioning costs.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8truefalsefalse736000000736000000falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryRevised decommisioning costs.No authoritative reference available.falsefalseRevised decommisioning costs21false0fe_PercentageOfPOLRLoadOfSubsidiaryServedByCompanyfefalsenadurationPercentage of POLR load of Subsidiary served by the company.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsetruefalse00falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsefalsefalse3falsetruefalse00falsefalsefalsefalsefalse4falsetruefalse00falsefalsefalsefalsefalse5falsetruefalse00falsefalsefalsefalsefalse6falsetruefalse00falsefalsefalsefalsefalse7falsetruefalse00falsefalsefalsefalsefalse8truetruefalse0.770.77falsefalsefalsefalsefalse9falsetruefalse00falsefalsefalsefalsefalse10falsetruefalse00falsefalsefalsefalsefalse11falsetruefalse00falsefalsefalsefalsefalseOtherus-types:percentItemTypepurePercentage of POLR load of Subsidiary served by the company.No authoritative reference available.falsefalsePercentage of POLR load of Ohio companies served by the company22true0fe_TransactionsWithAffiliatedCompaniesTextualsAbstractfefalsenadurationTransactions with affiliated companies.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringTransactions with affiliated companies.falsefalseTransactions With Affiliated Companies (Textuals) [Abstract]23false0fe_NumberOfTranchesWonInSecondDescendingClockAuctionfefalsenadurationNumber of tranches won in second descending clock auction.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6truefalsefalse33falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10truefalsefalse00falsefalsefalsefalsefalse11truefalsefalse33falsefalsefalsefalsefalseOtherxbrli:integerItemTypeintegerNumber of tranches won in second descending clock auction.No authoritative reference available.falsefalseNumber of tranches won in second descending clock auction24false0us-gaap_RelatedPartyTransactionTermsAndMannerOfSettlementus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00settled under commercial terms within thirty daysfalsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDescription of the terms and manner of settlement of the related party transaction.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 57 -Paragraph 2 -Subparagraph d falsefalseIntercompany transactions with FirstEnergy and its other subsidiaries25false0fe_NumberOfTranchesWonInDescendingClockAuctionfefalsenadurationNumber of tranches won in descending clock auction.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truefalsefalse5151falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:integerItemTypeintegerNumber of tranches won in descending clock auction.No authoritative reference available.falsefalseNumber of tranches won in descending clock auction26false0fe_MasterSsoSupplyAgreementsEffectivePeriodDescriptionfefalsenadurationMaster SSO supply agreements effective period descriptionfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00five of which were effective in June, two more in July, four more in August and ten more in September, 2009.falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringMaster SSO supply agreements effective period descriptionNo authoritative reference available.falsefalseMaster SSO supply agreements effective period description27false0fe_NumberOfAdditionalTranchesfefalsenadurationNumber of additional tranches.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8truefalsefalse55falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:integerItemTypeintegerNumber of additional tranches.No authoritative reference available.falsefalseNumber of additional tranches28false0fe_TranchesServedAsResultOfAgreementPercentageDescriptionfefalsenainstantTranches served as a result of agreement Percentage, Description.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse0077% of the POLR load of the Ohio Companiesfalsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringTranches served as a result of agreement Percentage, Description.No authoritative reference available.falsefalseTranches served as a result of agreement Percentage, description29false0fe_NumberOfTranchesOfferedInDescendingClockAuctionfefalsenadurationNumber of tranches offered in descending clock auction.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6truefalsefalse1717falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10truefalsefalse1717falsefalsefalsefalsefalse11truefalsefalse1616falsefalsefalsefalsefalseOtherxbrli:integerItemTypeintegerNumber of tranches offered in descending clock auction.No authoritative reference available.falsefalseNumber of tranches offered in descending clock auction30false0fe_NumberOfTranchesWonInFirstDescendingClockAuctionfefalsenadurationNumber of tranches won in first descending clock auction.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6truefalsefalse1010falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10truefalsefalse77falsefalsefalsefalsefalse11truefalsefalse33falsefalsefalsefalsefalseOtherxbrli:integerItemTypeintegerNumber of tranches won in first descending clock auction.No authoritative reference available.falsefalseNumber of tranches won in first descending clock auction31false0fe_TrancheProductDescriptionInFirstDescendingClockAuctionfefalsenadurationTranche product description in first descending clock auction.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00Residential 5-month, Residential 24-month, Commercial 5-month, Commercial 12-month and Industrial 12-month.falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringTranche product description in first descending clock auction.No authoritative reference available.falsefalseTranche product description in first descending clock auction32false0fe_TranchesOfferedInFirstDescendingClockAuctionDeliveryPeriodDescriptionfefalsenadurationTranches offered in first descending clock auction, Delivery Period Description.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00All 5-month delivery periods are from January 1, 2011 through May 31, 2011, all 12-month delivery periods are from June 1, 2011 through May 31, 2012 while all 24-month delivery periods are from June 1, 2011 through May 31, 2013.falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringTranches offered in first descending clock auction, Delivery Period Description.No authoritative reference available.falsefalseTranches offered in first descending clock auction, delivery period description33false0fe_TrancheProductDescriptionInSecondDescendingClockAuctionfefalsenadurationTranche product description in second descending clock auction.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00Residential 12-month, Residential 24-month, Commercial 12-month and Industrial 12-month.falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringTranche product description in second descending clock auction.No authoritative reference available.falsefalseTranche product description in second descending clock auction34false0fe_TranchesOfferedInSecondDescendingClockAuctionDeliveryPeriodDescriptionfefalsenadurationTranches offered in second descending clock auction, Delivery Period Description.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00All 12-month delivery periods are from June 1, 2011 through May 31, 2012 while all 24-month delivery periods are from June 1, 2011 through May 31, 2013.falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringTranches offered in second descending clock auction, Delivery Period Description.No authoritative reference available.falsefalseTranches offered in second descending clock auction, delivery period description35false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://firstenergycorp.com/role/disclosureregulatorymattersdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse12falsefalseUSDtruefalse{dei_LegalEntityAxis} : TE [Member] 12/31/2009 USD ($) $BalanceAsOf_31Dec2009_Te_Memberhttp://www.sec.gov/CIK0001031296instant2009-12-31T00:00:000001-01-01T00:00:00falsefalseTE [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldife_TeMemberdei_LegalEntityAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseTE [Member]36true0fe_RegulatoryMattersTextualsAbstractfefalsenadurationRegulatory Matters.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRegulatory Matters.falsefalseRegulatory Matters (Textuals)37false0fe_IncreaseElectricDistributionRatesfefalsedebitinstantIncrease electric distribution rates.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse3850000038500000falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryIncrease electric distribution rates.No authoritative reference available.falsefalseIncrease electric distribution rates39false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://firstenergycorp.com/role/disclosureregulatorymattersdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse13falsefalseUSDtruefalse{dei_LegalEntityAxis} : CEI [Member] 12/31/2009 USD ($) $BalanceAsOf_31Dec2009_Cei_Memberhttp://www.sec.gov/CIK0001031296instant2009-12-31T00:00:000001-01-01T00:00:00falsefalseCEI [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldife_CeiMemberdei_LegalEntityAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseCEI [Member]40true0fe_RegulatoryMattersTextualsAbstractfefalsenadurationRegulatory Matters.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRegulatory Matters.falsefalseRegulatory Matters (Textuals)41false0fe_IncreaseElectricDistributionRatesfefalsedebitinstantIncrease electric distribution rates.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse2920000029200000falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryIncrease electric distribution rates.No authoritative reference available.falsefalseIncrease electric distribution rates43false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://firstenergycorp.com/role/disclosureregulatorymattersdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse14falsefalseUSDtruefalse{dei_LegalEntityAxis} : OE [Member] 12/31/2009 USD ($) $BalanceAsOf_31Dec2009_Oe_Memberhttp://www.sec.gov/CIK0001031296instant2009-12-31T00:00:000001-01-01T00:00:00falsefalseOE [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldife_OeMemberdei_LegalEntityAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseOE [Member]44true0fe_RegulatoryMattersTextualsAbstractfefalsenadurationRegulatory Matters.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRegulatory Matters.falsefalseRegulatory Matters (Textuals)45false0fe_IncreaseElectricDistributionRatesfefalsedebitinstantIncrease electric distribution rates.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse6890000068900000falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryIncrease electric distribution rates.No authoritative reference available.falsefalseIncrease electric distribution rates47false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://firstenergycorp.com/role/disclosureregulatorymattersdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse15falsefalseUSDtruefalse{dei_LegalEntityAxis} : Penelec [Member] 1/1/2010 - 12/31/2010 USD ($) $TwelveMonthsEnded_31Dec2010_Penelec_Memberhttp://www.sec.gov/CIK0001031296duration2010-01-01T00:00:002010-12-31T00:00:00falsefalsePenelec [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldife_PenelecMemberdei_LegalEntityAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$OthernaNo definition available.No authoritative reference available.falsefalsePenelec [Member]48true0fe_RegulatoryMattersTextualsAbstractfefalsenadurationRegulatory Matters.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRegulatory Matters.falsefalseRegulatory Matters (Textuals)49false0fe_ProjectedTransmissionCostfefalsedebitdurationProjected Transmission Cost.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8truefalsefalse6470000064700000falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryProjected Transmission Cost.No authoritative reference available.falsefalseTransmission cost projections51false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://firstenergycorp.com/role/disclosureregulatorymattersdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse16falsefalsetruefalse{us-gaap_RelatedPartyTransactionsByRelatedPartyAxis} : Penelec [Member] 1/1/2011 - 1/31/2011 OneMonthEnded_31Jan2011_Penelec_Memberhttp://www.sec.gov/CIK0001031296duration2011-01-01T00:00:002011-01-31T00:00:00falsefalsePenelec [Member]us-gaap_RelatedPartyTransactionsByRelatedPartyAxisxbrldihttp://xbrl.org/2006/xbrldife_PenelecMemberus-gaap_RelatedPartyTransactionsByRelatedPartyAxisexplicitMember17falsefalsetruefalse{us-gaap_RelatedPartyTransactionsByRelatedPartyAxis} : Penelec [Member] 10/1/2010 - 10/31/2010 OneMonthEnded_31Oct2010_Penelec_Memberhttp://www.sec.gov/CIK0001031296duration2010-10-01T00:00:002010-10-31T00:00:00falsefalsePenelec [Member]us-gaap_RelatedPartyTransactionsByRelatedPartyAxisxbrldihttp://xbrl.org/2006/xbrldife_PenelecMemberus-gaap_RelatedPartyTransactionsByRelatedPartyAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli0OthernaNo definition available.No authoritative reference available.falsefalsePenelec [Member]53true0fe_TransactionsWithAffiliatedCompaniesTextualsAbstractfefalsenadurationTransactions with affiliated companies.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringTransactions with affiliated companies.falsefalseTransactions With Affiliated Companies (Textuals) [Abstract]54false0fe_TranchesOfferedInFirstDescendingClockAuctionDescriptionfefalsenadurationTranches offered in first descending clock auction, Description.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse005 Residential 5-month tranches, 3 Residential 24-month tranches, 5 Commercial 5-month tranches, 5 Commercial 12-month tranches and 1 Industrial tranche.falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringTranches offered in first descending clock auction, Description.No authoritative reference available.falsefalseTranches offered in first descending clock auction, description55false0fe_TranchesWonInDescendingClockAuctionDescriptionfefalsenadurationTranches won in descending clock auction Description.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse001 Residential 5-month tranche, 1 Residential 24-month tranche, zero Commercial 5-month tranches, zero Commercial 12-month tranches and zero Industrial tranches.falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringTranches won in descending clock auction Description.No authoritative reference available.falsefalseTranches won in descending clock auction description56false0fe_TranchesOfferedInSecondDescendingClockAuctionDescriptionfefalsenadurationTranches offered in second descending clock auction, Description.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse003 Residential 12-month tranches, 2 Residential 24-month tranches, 5 Commercial 12-month tranches and 11 Industrial tranches.falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringTranches offered in second descending clock auction, Description.No authoritative reference available.falsefalseTranches offered in second descending clock auction, description57false0fe_NumberOfTranchesWonInSecondDescendingClockAuctionfefalsenadurationNumber of tranches won in second descending clock auction.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:integerItemTypeintegerNumber of tranches won in second descending clock auction.No authoritative reference available.falsefalseNumber of tranches won in second descending clock auction58false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://firstenergycorp.com/role/disclosureregulatorymattersdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse18falsefalseUSDtruefalse{dei_LegalEntityAxis} : JCP&L [Member] 12/31/2010 USD ($) $BalanceAsOf_31Dec2010_Jcp_And_L_Memberhttp://www.sec.gov/CIK0001031296instant2010-12-31T00:00:000001-01-01T00:00:00falsefalseJCP&L [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldife_JcpAndLMemberdei_LegalEntityAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseJCP&L [Member]59true0fe_RegulatoryMattersTextualsAbstractfefalsenadurationRegulatory Matters.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRegulatory Matters.falsefalseRegulatory Matters (Textuals)60false0fe_InfrastructureAndEnergyProjectsfefalsedebitinstantInfrastructure and energy projects.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8truefalsefalse9800000098000000falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryInfrastructure and energy projects.No authoritative reference available.falsefalseInfrastructure and energy projects62false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://firstenergycorp.com/role/disclosureregulatorymattersdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse19falsefalseUSDtruefalse{dei_LegalEntityAxis} : Met-Ed [Member] 1/1/2010 - 12/31/2010 USD ($) $TwelveMonthsEnded_31Dec2010_Met_Ed_Memberhttp://www.sec.gov/CIK0001031296duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseMet-Ed [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldife_MetEdMemberdei_LegalEntityAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseMet-Ed [Member]63true0fe_RegulatoryMattersTextualsAbstractfefalsenadurationRegulatory Matters.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRegulatory Matters.falsefalseRegulatory Matters (Textuals)64false0fe_ProjectedTransmissionCostfefalsedebitdurationProjected Transmission Cost.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8truefalsefalse188000000188000000falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryProjected Transmission Cost.No authoritative reference available.falsefalseTransmission cost projections66false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://firstenergycorp.com/role/disclosureregulatorymattersdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse20falsefalsetruefalse{us-gaap_RelatedPartyTransactionsByRelatedPartyAxis} : Met-Ed [Member] 1/1/2011 - 1/31/2011 OneMonthEnded_31Jan2011_Met_Ed_Memberhttp://www.sec.gov/CIK0001031296duration2011-01-01T00:00:002011-01-31T00:00:00falsefalseMet-Ed [Member]us-gaap_RelatedPartyTransactionsByRelatedPartyAxisxbrldihttp://xbrl.org/2006/xbrldife_MetEdMemberus-gaap_RelatedPartyTransactionsByRelatedPartyAxisexplicitMember21falsefalsetruefalse{us-gaap_RelatedPartyTransactionsByRelatedPartyAxis} : Met-Ed [Member] 10/1/2010 - 10/31/2010 OneMonthEnded_31Oct2010_Met_Ed_Memberhttp://www.sec.gov/CIK0001031296duration2010-10-01T00:00:002010-10-31T00:00:00falsefalseMet-Ed [Member]us-gaap_RelatedPartyTransactionsByRelatedPartyAxisxbrldihttp://xbrl.org/2006/xbrldife_MetEdMemberus-gaap_RelatedPartyTransactionsByRelatedPartyAxisexplicitMemberOthernaNo definition available.No authoritative reference available.falsefalseMet-Ed [Member]68true0fe_TransactionsWithAffiliatedCompaniesTextualsAbstractfefalsenadurationTransactions with affiliated companies.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringTransactions with affiliated companies.falsefalseTransactions With Affiliated Companies (Textuals) [Abstract]69false0fe_TranchesOfferedInAuctionDescriptionfefalsenadurationTranches offered in auction, Description.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse007 Residential 5-month tranches, 4 Residential 24-month tranches, 6 Commercial 5-month tranches, 6 Commercial 12-month tranches and 1 Industrial tranchefalsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringTranches offered in auction, Description.No authoritative reference available.falsefalseTranches offered in auction, description70false0fe_TranchesWonInFirstDescendingClockAuctionDescriptionfefalsenadurationTranches won in first descending clock auction, Description.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse004 Residential 5-month tranches, 2 Residential 24-month tranches, 1 Commercial 5-month tranche, 1 Commercial 12-month tranche and zero Industrial tranches.falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringTranches won in first descending clock auction, Description.No authoritative reference available.falsefalseTranches won in first descending clock auction, description71false0fe_TranchesOfferedInSecondDescendingClockAuctionDescriptionfefalsenadurationTranches offered in second descending clock auction, Description.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse003 Residential 12-month tranches, 4 Residential 24-month tranches, 6 Commercial 12-month tranches and 11 Industrial tranches.falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringTranches offered in second descending clock auction, Description.No authoritative reference available.falsefalseTranches offered in second descending clock auction, description72false0fe_TranchesWonInSecondDescendingClockAuctionDescriptionfefalsenadurationTranches won in second descending clock auction Description.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse001 Commercial 12-month tranche and zero for the remaining products.falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringTranches won in second descending clock auction Description.No authoritative reference available.falsefalseTranches won in second descending clock auction description73false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://firstenergycorp.com/role/disclosureregulatorymattersdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse22falsefalsetruefalse{us-gaap_RelatedPartyTransactionsByRelatedPartyAxis} : Penn [Member] 1/1/2011 - 1/31/2011 OneMonthEnded_31Jan2011_Penn_Memberhttp://www.sec.gov/CIK0001031296duration2011-01-01T00:00:002011-01-31T00:00:00falsefalsePenn [Member]us-gaap_RelatedPartyTransactionsByRelatedPartyAxisxbrldihttp://xbrl.org/2006/xbrldife_PennMemberus-gaap_RelatedPartyTransactionsByRelatedPartyAxisexplicitMember23falsefalsetruefalse{us-gaap_RelatedPartyTransactionsByRelatedPartyAxis} : Penn [Member] 10/1/2010 - 10/31/2010 OneMonthEnded_31Oct2010_Penn_Memberhttp://www.sec.gov/CIK0001031296duration2010-10-01T00:00:002010-10-31T00:00:00falsefalsePenn [Member]us-gaap_RelatedPartyTransactionsByRelatedPartyAxisxbrldihttp://xbrl.org/2006/xbrldife_PennMemberus-gaap_RelatedPartyTransactionsByRelatedPartyAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli0OthernaNo definition available.No authoritative reference available.falsefalsePenn [Member]75true0fe_TransactionsWithAffiliatedCompaniesTextualsAbstractfefalsenadurationTransactions with affiliated companies.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringTransactions with affiliated companies.falsefalseTransactions With Affiliated Companies (Textuals) [Abstract]76false0fe_TranchesOfferedInSecondDescendingClockAuctionDescriptionfefalsenadurationTranches offered in second descending clock auction, Description.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse002 Residential 12-month tranches, 1 Residential 24-month tranche, 3 Commercial 12-month tranches and 3 Industrial tranches.falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringTranches offered in second descending clock auction, Description.No authoritative reference available.falsefalseTranches offered in second descending clock auction, description77false0fe_NumberOfTranchesWonInSecondDescendingClockAuctionfefalsenadurationNumber of tranches won in second descending clock auction.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:integerItemTypeintegerNumber of tranches won in second descending clock auction.No authoritative reference available.falsefalseNumber of tranches won in second descending clock auction78false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://firstenergycorp.com/role/disclosureregulatorymattersdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse24falsefalseUSDtruefalse{us-gaap_PublicUtilityAxis} : Transformerand Distibutionline [Member] 12/31/2010 USD ($) $BalanceAsOf_31Dec2010_Transformerand_Distibutionline_Memberhttp://www.sec.gov/CIK0001031296instant2010-12-31T00:00:000001-01-01T00:00:00falsefalseTransformerand Distibutionline [Member]us-gaap_PublicUtilityAxisxbrldihttp://xbrl.org/2006/xbrldife_TransformerandDistibutionlineMemberus-gaap_PublicUtilityAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseTransformerand Distibutionline [Member]79true0fe_RegulatoryMattersTextualsAbstractfefalsenadurationRegulatory Matters.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRegulatory Matters.falsefalseRegulatory Matters (Textuals)80false0fe_InfrastructureAndEnergyProjectsfefalsedebitinstantInfrastructure and energy projects.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8truefalsefalse4000000040000000falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryInfrastructure and energy projects.No authoritative reference available.falsefalseInfrastructure and energy projects82false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://firstenergycorp.com/role/disclosureregulatorymattersdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse25falsefalseUSDtruefalse{us-gaap_PublicUtilityAxis} : Existing Program [Member] 12/31/2010 USD ($) $BalanceAsOf_31Dec2010_Existing_Program_Memberhttp://www.sec.gov/CIK0001031296instant2010-12-31T00:00:000001-01-01T00:00:00falsefalseExisting Program [Member]us-gaap_PublicUtilityAxisxbrldihttp://xbrl.org/2006/xbrldife_ExistingProgramMemberus-gaap_PublicUtilityAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseExisting Program [Member]83true0fe_RegulatoryMattersTextualsAbstractfefalsenadurationRegulatory Matters.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRegulatory Matters.falsefalseRegulatory Matters (Textuals)84false0fe_InfrastructureAndEnergyProjectsfefalsedebitinstantInfrastructure and energy projects.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8truefalsefalse3400000034000000falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryInfrastructure and energy projects.No authoritative reference available.falsefalseInfrastructure and energy projects86false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://firstenergycorp.com/role/disclosureregulatorymattersdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse26falsefalseUSDtruefalse{us-gaap_PublicUtilityAxis} : Transformerand Capicitor [Member] 12/31/2010 USD ($) $BalanceAsOf_31Dec2010_Transformerand_Capicitor_Memberhttp://www.sec.gov/CIK0001031296instant2010-12-31T00:00:000001-01-01T00:00:00falsefalseTransformerand Capicitor [Member]us-gaap_PublicUtilityAxisxbrldihttp://xbrl.org/2006/xbrldife_TransformerandCapicitorMemberus-gaap_PublicUtilityAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseTransformerand Capicitor [Member]87true0fe_RegulatoryMattersTextualsAbstractfefalsenadurationRegulatory Matters.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRegulatory Matters.falsefalseRegulatory Matters (Textuals)88false0fe_InfrastructureAndEnergyProjectsfefalsedebitinstantInfrastructure and energy projects.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8truefalsefalse1100000011000000falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryInfrastructure and energy projects.No authoritative reference available.falsefalseInfrastructure and energy projects90false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://firstenergycorp.com/role/disclosureregulatorymattersdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse27falsefalseUSDtruefalse{us-gaap_PublicUtilityAxis} : Current Program [Member] 12/31/2010 USD ($) $BalanceAsOf_31Dec2010_Current_Program_Memberhttp://www.sec.gov/CIK0001031296instant2010-12-31T00:00:000001-01-01T00:00:00falsefalseCurrent Program [Member]us-gaap_PublicUtilityAxisxbrldihttp://xbrl.org/2006/xbrldife_CurrentProgramMemberus-gaap_PublicUtilityAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseCurrent Program [Member]91true0fe_RegulatoryMattersTextualsAbstractfefalsenadurationRegulatory Matters.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRegulatory Matters.falsefalseRegulatory Matters (Textuals)92false0fe_InfrastructureAndEnergyProjectsfefalsedebitinstantInfrastructure and energy projects.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8truefalsefalse1300000013000000falsetruefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryInfrastructure and energy projects.No authoritative reference available.falsefalseInfrastructure and energy projects94false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://firstenergycorp.com/role/disclosureregulatorymattersdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse28falsefalsetruefalse{fe_RegulatoryMattersMeasurementUnitsAxis} : Kv [Member] 1/1/2010 - 12/31/2010 TwelveMonthsEnded_31Dec2010_Kv_Memberhttp://www.sec.gov/CIK0001031296duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseKv [Member]fe_RegulatoryMattersMeasurementUnitsAxisxbrldihttp://xbrl.org/2006/xbrldife_KvMemberfe_RegulatoryMattersMeasurementUnitsAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli0OthernaNo definition available.No authoritative reference available.falsefalseKv [Member]95true0fe_RegulatoryMattersTextualsAbstractfefalsenadurationRegulatory Matters.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRegulatory Matters.falsefalseRegulatory Matters (Textuals)96false0fe_NewVoltageTransmissionFacilitiesZonalTransmissionRatefefalsenadurationNew Voltage transmission facilities and zonal transmission rate.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8truefalsefalse500500falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:integerItemTypeintegerNew Voltage transmission facilities and zonal transmission rate.No authoritative reference available.falsefalseNew Voltage transmission facilities across PJM and a zonal transmission rate (In KV)98false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://firstenergycorp.com/role/disclosureregulatorymattersdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse29falsefalsetruefalse{us-gaap_RelatedPartyTransactionsByRelatedPartyAxis} : FES [Member] 12/31/2010 BalanceAsOf_31Dec2010_Fes_Memberhttp://www.sec.gov/CIK0001031296instant2010-12-31T00:00:000001-01-01T00:00:00falsefalseFES [Member]us-gaap_RelatedPartyTransactionsByRelatedPartyAxisxbrldihttp://xbrl.org/2006/xbrldife_FesMemberus-gaap_RelatedPartyTransactionsByRelatedPartyAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli0OthernaNo definition available.No authoritative reference available.falsefalseFES [Member]100true0fe_TransactionsWithAffiliatedCompaniesTextualsAbstractfefalsenadurationTransactions with affiliated companies.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringTransactions with affiliated companies.falsefalseTransactions With Affiliated Companies (Textuals) [Abstract]101false0fe_NumberOfTranchesServedAsResultOfAgreementfefalsenainstantNumber of tranches served as a result of agreement.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8truefalsefalse7777falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:integerItemTypeintegerNumber of tranches served as a result of agreement.No authoritative reference available.falsefalseNumber of tranches served as a result of agreement1185Regulatory Matters (Details) (USD $)NoRoundingUnKnownUnKnownUnKnowntruetrue