Condensed Consolidated Statements Of Equity (USD $) In Millions	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Non-Controlling Interest [Member]
Balance at Dec. 31, 2010	$ 2,862	$ 5,061	$ 3,866	$ (17,187)	$ 24,784	$ (13,758)	$ 96
Net earnings	2,623				2,625		(2)
Unrealized gain on derivative instruments, net of tax of $23 in 2011 and ($14) in 2012	(46)					(46)
Unrealized loss on certain investments, net of tax of $2	(3)					(3)
Reclassification adjustment for losses realized in net earnings, net of tax of $1 in 2011 and ($5) in 2012	(1)					(1)
Currency translation adjustments	(18)					(18)
Postretirement liability adjustment, net of tax of ($398) in 2011 and ($679) in 2012	680					680
Comprehensive income	3,235
Share-based compensation and related dividend equivalents	140		148		(8)
Excess tax pools	20		20
Treasury shares issued for stock options exercised, net	105		(33)	138
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	(13)		(52)	39
Treasury shares issued for 401(k) contribution	334		39	295
Cash dividends declared of $0.84 per share in 2011 and $0.88 per share in 2012	(622)				(622)
Balance at Sep. 30, 2011	6,061	5,061	3,988	(16,715)	26,779	(13,146)	94
Balance at Dec. 31, 2011	3,608	5,061	4,033	(16,603)	27,524	(16,500)	93
Net earnings	2,926				2,922		4
Unrealized gain on derivative instruments, net of tax of $23 in 2011 and ($14) in 2012	25					25
Reclassification adjustment for losses realized in net earnings, net of tax of $1 in 2011 and ($5) in 2012	8					8
Currency translation adjustments	26					26
Postretirement liability adjustment, net of tax of ($398) in 2011 and ($679) in 2012	1,180					1,180
Comprehensive income	4,165
Share-based compensation and related dividend equivalents	145		155		(10)
Excess tax pools	43		43
Treasury shares issued for stock options exercised, net	95		(43)	138
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	(64)		(174)	110
Treasury shares issued for 401(k) contribution	354		54	300
Cash dividends declared of $0.84 per share in 2011 and $0.88 per share in 2012	(661)				(661)
Changes in noncontrolling interest	(3)						(3)
Balance at Sep. 30, 2012	$ 7,682	$ 5,061	$ 4,068	$ (16,055)	$ 29,775	$ (15,261)	$ 94