Shareowners' Equity (Changes Noncontrolling Interests) (Details) - USD ($) $ in Millions		3 Months Ended			9 Months Ended
		Sep. 30, 2015		Sep. 30, 2014	Sep. 30, 2015		Sep. 30, 2014
Stockholders' Equity Note [Abstract]
Beginning balance		$ 3,083		$ 350	$ 2,899	[1],[2]	$ 432	[1]
Net earnings	[2]	83		55	267		76
Dividends		0		0	(5)		(1)
Dispositions		(3)		(6)	(9)		(98)
Synchrony Financial IPO		0		2,393	0		2,393
AOCI and other		(2)		12	8		2
Ending balance		$ 3,160	[1],[2]	$ 2,804	$ 3,160	[1],[2]	$ 2,804

[1] (c) Included AOCI attributable to noncontrolling interests of $ (178) million and $ (154) million at September 30, 2015 and December 31, 2014 , respectively.

[2] Amounts may not add due to rounding.