Operating Segments, Revenues (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Segment Reporting Information [Line Items]
Revenues	[1]	$ 6,312	$ 6,384	$ 17,452	$ 19,223
Operating segments
Segment Reporting Information [Line Items]
Revenues		5,468	5,479	14,867	16,637
CLL | Operating segments
Segment Reporting Information [Line Items]
Revenues		285	251	790	743
Consumer | Operating segments
Segment Reporting Information [Line Items]
Revenues		3,652	3,622	9,237	10,822
Energy Financial Services | Operating segments
Segment Reporting Information [Line Items]
Revenues		225	344	906	1,120
GECAS | Operating segments
Segment Reporting Information [Line Items]
Revenues		1,307	1,262	3,935	3,952
Corporate Items And Eliminations [Member] | Operating segments
Segment Reporting Information [Line Items]
Revenues		$ 843	$ 905	$ 2,585	$ 2,586

[1] Amounts may not add due to rounding.