Consolidated Statements Of Shareholders' Equity (USD $) In Millions, unless otherwise specified	Total	Common Stock [Member]	Reinvested Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interests [Member]
Balance at Dec. 31, 2012	$ 19,131	$ 6,134	$ 13,236	$ (450)	$ 211
Balance (shares) at Dec. 31, 2012		659
Comprehensive income
Net earnings	977		968		9
Other comprehensive income	43			52	(9)
Total comprehensive income	1,020
Cash dividends paid - $0.57 per share	(376)		(376)
Treasury stock purchases, shares		(3)
Treasury stock purchases	(95)	(95)
Stock compensation expense	30	30
Noncontrolling interests associated with mandatorily redeemable instruments	(180)				(180)
Other, shares		2
Other	36	39			(3)
Balance at Sep. 30, 2013	$ 19,566	$ 6,108	$ 13,828	$ (398)	$ 28
Balance (shares) at Sep. 30, 2013		658