Supplemental Information About The Credit Quality Of Financing Receivables And Allowance For Losses On Financing Receivables (Impaired Loans) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Impaired Loans
Total impaired loans	$ 973		$ 5,275
Allowance for losses (specific reserves)			553
Changes In Loans Modified As Troubled Debt Restructurings	810
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	3,100		4,361
Discounted Cash Flow Method [Member]
Impaired Loans
Total impaired loans	834		3,915
Collateral Value Method [Member]
Impaired Loans
Total impaired loans	139		1,360
No Related Allowance [Member]
Impaired Loans
Total impaired loans	232		2,812
Unpaid principal balance	238		4,967
Average investment during the period			2,959
Related Allowance [Member]
Impaired Loans
Total impaired loans	741		2,463
Unpaid principal balance	640		3,232
Average investment during the period	1,601		3,304
Allowance for losses (specific reserves)	249		553
Total CLL [Member] \| TDR Modifications [Member]
Impaired Loans
Financing Receivable, Modifications, Recorded Investment	633	1,391
Loans Modified As Troubled Debt Restructuring That Have Subsequently Experienced Payment Default	0	19
Total CLL [Member] \| TDR Modifications [Member] \| Troubled Debt Restructuring [Member]
Impaired Loans
Financing Receivable, Modifications, Recorded Investment	2
Impaired loans paying in accordance with contractual terms	2		1,869
Total CLL [Member] \| No Related Allowance [Member]
Impaired Loans
Total impaired loans	8		2,292
Unpaid principal balance	8		4,397
Average investment during the period			2,725
Total CLL [Member] \| Related Allowance [Member]
Impaired Loans
Total impaired loans	6		406
Unpaid principal balance	6		1,125
Average investment during the period	206		717
Allowance for losses (specific reserves)	5		133
Energy Financial Services [Member] \| No Related Allowance [Member]
Impaired Loans
Total impaired loans	54		53
Unpaid principal balance	55		54
Average investment during the period			26
Energy Financial Services [Member] \| Related Allowance [Member]
Impaired Loans
Total impaired loans	9		15
Unpaid principal balance	9		15
Average investment during the period	12		24
Allowance for losses (specific reserves)	0		12
GECAS [Member]
Impaired Loans
Changes In Loans Modified As Troubled Debt Restructurings	82
GECAS [Member] \| No Related Allowance [Member]
Impaired Loans
Total impaired loans	170		329
Unpaid principal balance	175		337
Average investment during the period			88
GECAS [Member] \| Related Allowance [Member]
Impaired Loans
Total impaired loans	0		0
Unpaid principal balance	0		0
Average investment during the period	0		15
Allowance for losses (specific reserves)	0		0
Commercial [Member]
Impaired Loans
Total impaired loans	247		3,095
Allowance for losses (specific reserves)			145
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	89		758
Commercial [Member] \| Impaired Loans [Member]
Impaired Loans
Average investment during the period	1,671		3,596
Interest income recognized	6	57	178
Commercial [Member] \| No Related Allowance [Member]
Impaired Loans
Total impaired loans	232		2,674
Unpaid principal balance	238		4,788
Average investment during the period			2,839
Commercial [Member] \| Related Allowance [Member]
Impaired Loans
Total impaired loans	15		421
Unpaid principal balance	15		1,140
Average investment during the period	218		757
Allowance for losses (specific reserves)	5		145
Commercial [Member] \| Other Financing Receivables [Member] \| No Related Allowance [Member]
Impaired Loans
Total impaired loans	0		0
Consumer [Member]
Impaired Loans
Total impaired loans	726		2,180
Allowance for losses (specific reserves)			408
Changes In Loans Modified As Troubled Debt Restructurings	726
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	3,011		3,603
Consumer [Member] \| Impaired Loans [Member]
Impaired Loans
Unpaid principal balance	625
Average investment during the period	1,452		2,667
Interest income recognized	23	46	126
Interest income recognized on a cash basis	1		5
Consumer [Member] \| TDR Modifications [Member]
Impaired Loans
Financing Receivable, Modifications, Recorded Investment	869	1,339
Consumer [Member] \| TDR Modifications [Member] \| Troubled Debt Restructuring [Member]
Impaired Loans
Financing Receivable, Modifications, Recorded Investment	120
Loans Modified As Troubled Debt Restructuring That Have Subsequently Experienced Payment Default	23	57
Impaired loans paying in accordance with contractual terms	726		2,132
Consumer [Member] \| No Related Allowance [Member]
Impaired Loans
Total impaired loans	0		138
Unpaid principal balance	0		179
Average investment during the period			120
Consumer [Member] \| Related Allowance [Member]
Impaired Loans
Total impaired loans	726		2,042
Unpaid principal balance	625		2,092
Average investment during the period	1,383		2,547
Allowance for losses (specific reserves)	$ 244		$ 408

Loans that were modified as troubled debt restructurings during the period.

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Reflects the amount of interest income on impaired and nonperforming loans that was recognized as income during the reporting period.

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Loans that were modified by troubled debt restructurings that experienced a payment default after being classified as a troubled debt restructuring.

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- Definition

The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

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- Definition

The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 40

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554

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Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5212-111524

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- Definition

Amount of interest income recognized on a cash-basis method of accounting that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

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Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 14A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953550-111524

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Amount of allowance for credit losses related to recorded investment.

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- Definition

Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

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