2.4.0.8400303 - Disclosure - Investment Securities (Contractual maturities) (Details)truefalseIn Millions, unless otherwise specifiedfalse1false USDfalsefalse$AS_OF_Jun30_2013_invest_InvestmentSecuritiesSeriesAxis_AmortizedCostMemberhttp://www.sec.gov/CIK0000040554instant2013-06-30T00:00:000001-01-01T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse1false USDtruefalse$AS_OF_Jun30_2013_invest_InvestmentSecuritiesSeriesAxis_AmortizedCostMemberhttp://www.sec.gov/CIK0000040554instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseAmortized Cost [Member]invest_InvestmentSecuritiesSeriesAxisxbrldihttp://xbrl.org/2006/xbrldigecc_AmortizedCostMemberinvest_InvestmentSecuritiesSeriesAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse02true 3invest_InvestmentLineItemsinvest_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse03false 4gecc_AvailableForSaleSecuritiesDebtMaturitiesExcludingMortgageBackedAndAssetBackedSecuritiesWithinOneYearAmortizedCostgecc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse26750000002675USD$falsetruefalsexbrli:monetaryItemTypemonetaryThis item represents debt securities (excluding mortgage-backed and asset-backed securities), at cost, net of adjustments made for accretion, amortization, other-than-temporary impairments, and hedging, if any, which are expected to mature within one year of the balance sheet date and which are categorized neither as held-to-maturity nor trading securities.No definition available.false24false 4gecc_AvailableForSaleSecuritiesDebtMaturitiesExcludingMortgageBackedAndAssetBackedSecuritiesAfterOneThroughFiveYearsAmortizedCostgecc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse34240000003424USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThis item represents debt securities (excluding mortgage-backed and asset-backed securities), at cost, net of adjustments made for accretion, amortization, other-than-temporary impairments, and hedging, if any, which are expected to mature after one year and through five years from the balance sheet date and which are categorized neither as held-to-maturity nor trading securities.No definition available.false25false 4gecc_AvailableForSaleSecuritiesDebtMaturitiesExcludingMortgageBackedAndAssetBackedSecuritiesAfterFiveThroughTenYearsAmortizedCostgecc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse53460000005346USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThis item represents debt securities (excluding mortgage-backed and asset-backed securities), at cost, net of adjustments made for accretion, amortization, other-than-temporary impairments, and hedging, if any, which are expected to mature after five years and through ten years from the balance sheet date and which are categorized neither as held-to-maturity nor trading securities.No definition available.false26false 4gecc_AvailableForSaleSecuritiesDebtMaturitiesExcludingMortgageBackedAndAssetBackedSecuritiesAfterTenYearsAmortizedCostgecc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse1784100000017841USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThis item represents debt securities (excluding mortgage-backed and asset-backed securities), at cost, net of adjustments made for accretion, amortization, other-than-temporary impairments, and hedging, if any, which are expected to mature after ten years from the balance sheet date and which are categorized neither as held-to-maturity nor trading securities.No definition available.false27false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2false USDtruefalse$AS_OF_Jun30_2013_invest_InvestmentSecuritiesSeriesAxis_EstimatedFairValueMemberhttp://www.sec.gov/CIK0000040554instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseEstimated Fair Value [Member]invest_InvestmentSecuritiesSeriesAxisxbrldihttp://xbrl.org/2006/xbrldigecc_EstimatedFairValueMemberinvest_InvestmentSecuritiesSeriesAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse08true 3invest_InvestmentLineItemsinvest_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse09false 4gecc_AvailableForSaleSecuritiesDebtMaturitiesExcludingMortgageBackedAndAssetBackedSecuritiesWithinOneYearFairValuegecc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse26890000002689USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThis item represents the fair value of debt securities (excluding mortgage-backed and asset-backed securities) which are expected to mature within one year of the balance sheet date and which are categorized neither as held-to-maturity nor trading securities.No definition available.false210false 4gecc_AvailableForSaleSecuritiesDebtMaturitiesExcludingMortgageBackedAndAssetBackedSecuritiesAfterOneThroughFiveYearsFairValuegecc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse36300000003630USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThis item represents the fair value of debt securities (excluding mortgage-backed and asset-backed securities) which are expected to mature after one year and through five years from the balance sheet date and which are categorized neither as held-to-maturity nor trading securities.No definition available.false211false 4gecc_AvailableForSaleSecuritiesDebtMaturitiesExcludingMortgageBackedAndAssetBackedSecuritiesAfterFiveThroughTenYearsFairValuegecc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse56040000005604USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThis item represents the fair value of debt securities (excluding mortgage-backed and asset-backed securities) which are expected to mature after five years and through ten years from the balance sheet date and which are categorized neither as held-to-maturity nor trading securities.No definition available.false212false 4gecc_AvailableForSaleSecuritiesDebtMaturitiesExcludingMortgageBackedAndAssetBackedSecuritiesAfterTenYearsFairValuegecc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse2013200000020132USD$falsetruefalsexbrli:monetaryItemTypemonetaryThis item represents the fair value of debt securities (excluding mortgage-backed and asset-backed securities) which are expected to mature after ten years from the balance sheet date which are categorized neither as held-to-maturity nor trading securities.No definition available.false2falseInvestment Securities (Contractual maturities) (Details) (USD $)MillionsUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.gecc.com/role/InvestmentSecuritiesContractualMaturitiesDetails112