Supplemental Information About The Credit Quality Of Financing Receivables And Allowance For Losses On Financing Receivables (Credit Quality) (Details) NumberOfCustomer in Millions, $ in Millions	6 Months Ended
	Jun. 30, 2015 USD ($) NumberOfCustomer	Dec. 31, 2014 USD ($)
Credit Quality Indicators
Loans and leases receivable, Gross	$ 84,476	$ 126,561
CLL [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	12,228	14,418
CLL [Member] | Secured Financing Receivables Portfolio [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	12,228	14,418
CLL [Member] | Secured Financing Receivables Portfolio [Member] | Category C [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	32	98
CLL [Member] | Secured Financing Receivables Portfolio [Member] | Category B [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	37	49
CLL [Member] | Secured Financing Receivables Portfolio [Member] | Category A [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	12,159	14,271
Energy Financial Services [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	2,787	2,580
Energy Financial Services [Member] | Secured Financing Receivables Portfolio [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	2,678	2,555
Energy Financial Services [Member] | Secured Financing Receivables Portfolio [Member] | Category C [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	142	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	2,495	2,479
GECAS [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	7,528	8,263
GECAS [Member] | Secured Financing Receivables Portfolio [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	7,528	8,263
GECAS [Member] | Secured Financing Receivables Portfolio [Member] | Category C [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	97	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	7,206	7,908
Other Commercial [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	502	480
Other Commercial [Member] | Secured Financing Receivables Portfolio [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	151	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	$ 151	130
Commercial [Member]
Credit Quality Indicators
Credit derivative internal grouping parameter	3
Commercial [Member] | Default Risk [Member]
Credit Quality Indicators
Credit derivative internal grouping parameter	21
Commercial [Member] | Loss Given Default [Member]
Credit Quality Indicators
Credit derivative internal grouping parameter	6
Commercial [Member] | Secured Financing Receivables Portfolio [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	$ 22,585	25,366
Commercial [Member] | Secured Financing Receivables Portfolio [Member] | Category C [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	271	232
Commercial [Member] | Secured Financing Receivables Portfolio [Member] | Category B [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	303	346
Commercial [Member] | Secured Financing Receivables Portfolio [Member] | Category A [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	22,011	24,788
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	288	287
Commercial [Member] | Unsecured Financing Receivables Portfolio [Member] | Category A [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	$ 172	88
Consumer [Member]
Credit Quality Indicators
Maximum Percentage Of Private Label Consumer Financing Receivables Located In Any Metropolitan Area	5.00%
Number Of Consumer Financing Receivable Customers Across US Including Private Label Credit Card And Sales Financing | NumberOfCustomer	62
Percentage Of US Consumer Financing Receivables Related To Credit Cards Loans	67.00%
Percentage Of US Consumer Financing Receivables Related To Sales Finance Receivables	33.00%
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	$ 44,080	43,466
Consumer [Member] | US | US Installment And Revolving Credit [Member] | Score 601 to 660
Credit Quality Indicators
Loans and leases receivable, Gross	11,736	11,865
Consumer [Member] | US | US Installment And Revolving Credit [Member] | Score 600 or Less
Credit Quality Indicators
Loans and leases receivable, Gross	4,149	4,532
Other Consumer [Member] | Category C [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	176	382
Other Consumer [Member] | Category B [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	120	276
Other Consumer [Member] | Category A [Member]
Credit Quality Indicators
Loans and leases receivable, Gross	$ 1,170	$ 5,006