GECC Financing Receivables and Allowance for Losses (Financing Receivables by Portfolio) (Details) - USD ($) $ in Millions		Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivables, net	[1]	$ 72,353	$ 110,255
GECC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivables, net of deferred income		87,204	126,561
Allowance for losses		(3,457)	(4,104)	$ (4,231)	$ (4,025)
Financing receivables, net	[1]	83,748	122,457
GECC | CLL
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivables, net of deferred income		13,341	14,418
Allowance for losses		(32)	(21)	(20)	(17)
GECC | GECAS
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivables, net of deferred income		7,394	8,263
Allowance for losses		(37)	(46)	(15)	(17)
GECC | Energy Financial Services
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivables, net of deferred income		2,443	2,580
Allowance for losses		(14)	(26)	(6)	(8)
GECC | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivables, net of deferred income		23,684	25,741
Allowance for losses		(85)	(93)	(41)	(44)
GECC | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivables, net of deferred income		63,520	100,820
Allowance for losses		(3,372)	(4,011)	(4,190)	(3,981)
GECC | Other Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivables, net of deferred income		506	480
Allowance for losses		$ (2)	$ 0	$ 0	$ (2)

[1] Amounts may not add due to rounding.