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]
Beginning Balance at Dec. 31, 2014	$ 8,790	$ 5,061	$ 4,625	$ (23,298)	$ 36,180	$ (13,903)	$ 125
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	5,173				5,176		(3)
Other Comprehensive Income (Loss), Portion Attributable to Parent, net of tax of ($69) in 2017, $425 in 2016, and ($686) in 2015	1,155					1,155
Share-based compensation and related dividend equivalents	189		214		(25)
Excess tax pools	158		158
Treasury shares issued for stock options exercised, net	399		(29)	428
Treasury shares issued for other share-based plans, net	(81)		(134)	53
Common shares repurchased	(6,751)			(6,751)
Cash dividends declared of $5.97 per share in 2017, $4.69 per share in 2016, and $3.82 per share in 2015	(2,575)				(2,575)
Changes in noncontrolling interests	(60)						(60)
Ending Balance at Dec. 31, 2015	6,397	5,061	4,834	(29,568)	38,756	(12,748)	62
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	4,894				4,895		(1)
Other Comprehensive Income (Loss), Portion Attributable to Parent, net of tax of ($69) in 2017, $425 in 2016, and ($686) in 2015	(875)					(875)
Share-based compensation and related dividend equivalents	209		244		(35)
Excess tax pools	(84)		(84)
Treasury shares issued for stock options exercised, net	320		(63)	383
Treasury shares issued for other share-based plans, net	(80)		(169)	89
Common shares repurchased	(7,001)			(7,001)
Cash dividends declared of $5.97 per share in 2017, $4.69 per share in 2016, and $3.82 per share in 2015	(2,902)				(2,902)
Changes in noncontrolling interests	(1)						(1)
Ending Balance at Dec. 31, 2016	877	5,061	4,762	(36,097)	40,714	(13,623)	60
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	8,195				8,197		(2)
Other Comprehensive Income (Loss), Portion Attributable to Parent, net of tax of ($69) in 2017, $425 in 2016, and ($686) in 2015	247					247
Share-based compensation and related dividend equivalents	203		238		(35)
Treasury shares issued for stock options exercised, net	311		(88)	399
Treasury shares issued for other share-based plans, net	(128)		(190)	62
Treasury shares contributed to pension plans	3,500		2,082	1,418
Common shares repurchased	(9,236)			(9,236)
Cash dividends declared of $5.97 per share in 2017, $4.69 per share in 2016, and $3.82 per share in 2015	(3,556)				(3,556)
Changes in noncontrolling interests	(1)						(1)
Ending Balance at Dec. 31, 2017	$ 412	$ 5,061	$ 6,804	$ (43,454)	$ 45,320	$ (13,376)	$ 57