Financing Receivables and Allowance for Losses on Financing Receivables (Maturities) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014
Total Loans [Member]
Contractual Obligation, Fiscal Year Maturity [Abstract]
2015	$ 52,175
2016	18,663
2017	19,712
2018	14,034
2019	13,097
2020 and later	35,069
Total	152,750
Consumer revolving loans	64,864
Total Contractual Maturities	217,614
Net Rentals Receivable [Member]
Contractual Obligation, Fiscal Year Maturity [Abstract]
2015	8,012
2016	5,440
2017	3,752
2018	2,564
2019	1,513
2020 and later	2,608
Total	23,889
Consumer revolving loans	0
Total Contractual Maturities	$ 23,889

The amount of consumer revolving loans that are inlcuded in the company's net rentals receivables.

No definition available.

Name:	gecc_ConsumerRevolvingLoansIncludedInNetRentalsReceivable
Namespace Prefix:	gecc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Total contractual maturities including consumer loans.

+ References

No definition available.

+ Details

Name:	gecc_TotalContractualMaturities
Namespace Prefix:	gecc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.

+ References

No definition available.

+ Details

Name:	us-gaap_ContractualObligation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of contractual obligation maturing after the fifth fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

Name:	us-gaap_ContractualObligationDueAfterFifthYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of contractual obligation maturing in the fifth fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

Name:	us-gaap_ContractualObligationDueInFifthYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of contractual obligation maturing in the fourth fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

Name:	us-gaap_ContractualObligationDueInFourthYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of contractual obligation maturing in the next fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

Name:	us-gaap_ContractualObligationDueInNextTwelveMonths
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of contractual obligation maturing in the second fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

Name:	us-gaap_ContractualObligationDueInSecondYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of contractual obligation maturing in the third fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

Name:	us-gaap_ContractualObligationDueInThirdYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_ContractualObligationFiscalYearMaturityAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	gecc_ContratualMaturitiesTypeAxis=gecc_NetRentalsReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	gecc_ContratualMaturitiesTypeAxis=gecc_TotalLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: