Condensed Consolidated Statement of Changes in Shareowners' Equity (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Statement Of Changes In Shareowners Equity [Abstract]
Balance January 1	$ 81,890		$ 77,110
Net earnings (loss) attributable to the Company	1,818		1,575
Other comprehensive income attributable to Company	182		503
Changes in additional paid-in capital	(8)		3
Balance March 31	83,882		79,192
Noncontrolling interests	587	[1]	767
Total equity balance at March 31	$ 84,469		$ 79,959

[1] (c) Included accumulated other comprehensive income (loss) attributable to noncontrolling interests of $(131) million and $(129) million at March 31, 2013 and December 31, 2012, respectively.