Supplemental Information About The Credit Quality Of Financing Receivables And Allowance For Losses On Financing Receivables (Credit Quality) (Details) NumberOfCustomer in Millions, $ in Millions	9 Months Ended
	Sep. 30, 2015 USD ($) NumberOfCustomer	Dec. 31, 2014 USD ($)
Credit Quality Indicators
Loans and leases receivable, Gross	$ 87,204	$ 126,561
Number Of Consumer Financing Receivable Customers Across US Including Private Label Credit Card And Sales Financing | NumberOfCustomer	63
Percentage Of US Consumer Financing Receivables Related To Credit Cards Loans	66.00%
Percentage Of US Consumer Financing Receivables Related To Sales Finance Receivables	34.00%
Credit derivative internal grouping parameter	3
Default Risk [Member]
Credit Quality Indicators
Credit derivative internal grouping parameter	21
Loss Given Default [Member]
Credit Quality Indicators
Credit derivative internal grouping parameter	6
Secured Financing Receivables Portfolio [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	$ 23,230	25,366
Secured Financing Receivables Portfolio [Member] | Category C [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	130	232
Secured Financing Receivables Portfolio [Member] | Category B [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	310	346
Secured Financing Receivables Portfolio [Member] | Category A [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	22,790	24,788
CLL [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	13,341	14,418
CLL [Member] | Secured Financing Receivables Portfolio [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	13,341	14,418
CLL [Member] | Secured Financing Receivables Portfolio [Member] | Category C [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	37	98
CLL [Member] | Secured Financing Receivables Portfolio [Member] | Category B [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	44	49
CLL [Member] | Secured Financing Receivables Portfolio [Member] | Category A [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	13,260	14,271
Energy Financial Services [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	2,443	2,580
Energy Financial Services [Member] | Secured Financing Receivables Portfolio [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	2,342	2,555
Energy Financial Services [Member] | Secured Financing Receivables Portfolio [Member] | Category C [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	0	16
Energy Financial Services [Member] | Secured Financing Receivables Portfolio [Member] | Category B [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	41	60
Energy Financial Services [Member] | Secured Financing Receivables Portfolio [Member] | Category A [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	2,301	2,479
GECAS [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	7,394	8,263
GECAS [Member] | Secured Financing Receivables Portfolio [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	7,394	8,263
GECAS [Member] | Secured Financing Receivables Portfolio [Member] | Category C [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	93	118
GECAS [Member] | Secured Financing Receivables Portfolio [Member] | Category B [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	225	237
GECAS [Member] | Secured Financing Receivables Portfolio [Member] | Category A [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	7,076	7,908
Other Commercial [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	506	480
Other Commercial [Member] | Secured Financing Receivables Portfolio [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	153	130
Other Commercial [Member] | Secured Financing Receivables Portfolio [Member] | Category C [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	0	0
Other Commercial [Member] | Secured Financing Receivables Portfolio [Member] | Category B [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	0	0
Other Commercial [Member] | Secured Financing Receivables Portfolio [Member] | Category A [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	153	130
Commercial [Member] | Unsecured Financing Receivables Portfolio [Member] | Category C [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	0	0
Commercial [Member] | Unsecured Financing Receivables Portfolio [Member] | Category B [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	289	287
Commercial [Member] | Unsecured Financing Receivables Portfolio [Member] | Category A [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	$ 165	88
Consumer [Member]
Credit Quality Indicators
Maximum Percentage Of Private Label Consumer Financing Receivables Located In Any Metropolitan Area	5.00%
Consumer [Member] | US
Credit Quality Indicators
Maximum Percentage Of Private Label Consumer Financing Receivables Located In Any Metropolitan Area	6.00%
Consumer [Member] | US | US Installment And Revolving Credit [Member] | Score 661 or Higher
Credit Quality Indicators
Loans and leases receivable, Gross	$ 45,383	43,466
Consumer [Member] | US | US Installment And Revolving Credit [Member] | Score 601 to 660
Credit Quality Indicators
Loans and leases receivable, Gross	12,304	11,865
Consumer [Member] | US | US Installment And Revolving Credit [Member] | Score 600 or Less
Credit Quality Indicators
Loans and leases receivable, Gross	4,403	4,532
Other Consumer [Member] | Category C [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	175	382
Other Consumer [Member] | Category B [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	117	276
Other Consumer [Member] | Category A [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	$ 1,138	$ 5,006