Shareowners' Equity (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011	Sep. 30, 2012		Sep. 30, 2011
Changes To Noncontrolling Interest
Beginning balance	$ 759		$ 1,201	$ 690	[1]	$ 1,164
Net earnings	20		38	46		89
Dividends	(12)		(4)	(17)		(17)
AOCI and other	(56)		(30)	(8)		(31)
Ending balance	$ 711	[1]	$ 1,205	$ 711	[1]	$ 1,205

[1] (c) Included accumulated other comprehensive income − net attributable to noncontrolling interests of $(140) million and $(141) million at September 30, 2012 and December 31, 2011, respectively.