2.4.0.8401107 - Disclosure - Financial Instruments (Counterparty credit risk) (Details)truefalseIn Millions, unless otherwise specifiedfalse1false USDfalsefalse$AS_OF_Jun30_2013http://www.sec.gov/CIK0000040554instant2013-06-30T00:00:000001-01-01T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1true 4us-gaap_DerivativeCreditRiskRelatedContingentFeaturesAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse02false 5gecc_CollateralFairValuegecc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse52100000005210USD$falsetruefalsexbrli:monetaryItemTypemonetaryThe fair value of total collateral posted by counter parties in master netting agreements. Includes cash and security amounts.No definition available.false23false 5us-gaap_CollateralAlreadyPostedAggregateFairValueus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse306000000306USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44D -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624258-113959 false24false 5gecc_ExposureToCounterpartiesIncludingInterestNetCollateralExcludingDerivativesgecc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse133000000133USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe amount of the Company's exposure to counterparties, including interest due, net of collateral held, but excluding embedded derivativesNo definition available.false25false 5gecc_DerivativeLiabilityAfterCollateralAndOutstandingInterestPaymentsExcludingEmbeddedDerivativesgecc_falsecreditinstantfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse593000000593USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe net amount relating to our derivative liability, after consideration of collateral posted and outstanding interest payments, but excluding embedded derivativesNo definition available.false26false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2false USDtruefalse$AS_OF_Jun30_2013_gecc_DerivativeCounterpartyCollateralAxis_CashMemberhttp://www.sec.gov/CIK0000040554instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseCash [Member]gecc_DerivativeCounterpartyCollateralAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CashMembergecc_DerivativeCounterpartyCollateralAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse07true 4us-gaap_DerivativeCreditRiskRelatedContingentFeaturesAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse08false 5gecc_CollateralFairValuegecc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse31640000003164USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe fair value of total collateral posted by counter parties in master netting agreements. Includes cash and security amounts.No definition available.false29false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse3false USDtruefalse$AS_OF_Jun30_2013_gecc_DerivativeCounterpartyCollateralAxis_SecuritiesHeldByThirdPartiesMemberhttp://www.sec.gov/CIK0000040554instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseSecurities Held By Third Parties [Member]gecc_DerivativeCounterpartyCollateralAxisxbrldihttp://xbrl.org/2006/xbrldigecc_SecuritiesHeldByThirdPartiesMembergecc_DerivativeCounterpartyCollateralAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse010true 4us-gaap_DerivativeCreditRiskRelatedContingentFeaturesAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse011false 5us-gaap_SecuritiesHeldAsCollateralAtFairValueus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse20460000002046USD$falsetruefalsexbrli:monetaryItemTypemonetaryThe carrying amount (fair value) as of the balance sheet date of securities held that had been pledged by counterparties under financing and lending arrangements, pursuant to which the entity has the right by agreement or custom to sell or re-pledge such securities.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5086-111524 false2falseFinancial Instruments (Counterparty credit risk) (Details) (USD $)MillionsUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.gecc.com/role/DisclosureFinancialInstrumentsCounterpartyCreditRiskDetails111