v2.4.1.9
Income Taxes (Unrecognized Tax Benefits) (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Income Tax Disclosure [Line Items]      
Unrecognized tax benefits $ 3,055us-gaap_UnrecognizedTaxBenefits $ 3,223us-gaap_UnrecognizedTaxBenefits $ 3,106us-gaap_UnrecognizedTaxBenefits
Portion that, if recognized, would reduce tax expense and effective tax rate 2,259us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate 2,346us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate  
Accrued interest on unrecognized tax benefits 420us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued 570us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued  
Accrued penalties on unrecognized tax benefits 34us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued 97us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued  
Reasonably possible reduction to the balance of unrecognized tax benefits in succeeding 12 months lower limit 0us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleEstimatedRangeOfChangeLowerBound 0us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleEstimatedRangeOfChangeLowerBound  
Reasonably possible reduction to the balance of unrecognized tax benefits in succeeding 12 months upper limit 600us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleEstimatedRangeOfChangeUpperBound 800us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleEstimatedRangeOfChangeUpperBound  
Minimum [Member]      
Income Tax Disclosure [Line Items]      
Portion that, if recognized, would reduce tax expense and effective tax rate 0gecc_UnrecognizedTaxBenefitsDecreasesThatWouldImpactEffectiveTaxRate
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		 0gecc_UnrecognizedTaxBenefitsDecreasesThatWouldImpactEffectiveTaxRate
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		  
Maximum [Member]      
Income Tax Disclosure [Line Items]      
Portion that, if recognized, would reduce tax expense and effective tax rate $ 50gecc_UnrecognizedTaxBenefitsDecreasesThatWouldImpactEffectiveTaxRate
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		 $ 250gecc_UnrecognizedTaxBenefitsDecreasesThatWouldImpactEffectiveTaxRate
/ us-gaap_RangeAxis
= us-gaap_MaximumMember