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]
Accumulated Other Comprehensive Income (Loss), Net of Tax	[1]	$ (12,748)
Beginning Balance at Dec. 31, 2015		7,298	$ 5,061	$ 4,834	$ (29,568)	$ 39,657	$ (12,748)	$ 62
Net earnings		5,033				5,034		(1)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent		(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		1,917	5,061	4,762	(36,097)	41,754	(13,623)	60
Accumulated Other Comprehensive Income (Loss), Net of Tax	[1]	(13,623)
Net earnings		8,456				8,458		(2)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent		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		1,713	5,061	6,804	(43,454)	49,618	(16,373)	57
Retained Earnings (Accumulated Deficit)		49,618
Retained Earnings (Accumulated Deficit) | Accounting Standards Update 2018-02 [Member]		2,997
Accumulated Other Comprehensive Income (Loss), Net of Tax	[1]	(16,373)
Accumulated Other Comprehensive Income (Loss), Net of Tax | Accounting Standards Update 2018-02 [Member]		(2,997)
Net earnings		10,439				10,460		(21)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent		1,290					1,290
Share-based compensation and related dividend equivalents		202		238		(36)
Treasury shares issued for stock options exercised, net		81		(45)	126
Treasury shares issued for other share-based plans, net		(249)		(229)	(20)
Common shares repurchased		(9,000)			(9,000)
Cash dividends declared of $5.97 per share in 2017, $4.69 per share in 2016, and $3.82 per share in 2015		(4,101)				(4,101)
Changes in noncontrolling interests		35						35
Ending Balance at Dec. 31, 2018		410	$ 5,061	$ 6,768	$ (52,348)	$ 55,941	$ (15,083)	$ 71
Retained Earnings (Accumulated Deficit)		55,941
Accumulated Other Comprehensive Income (Loss), Net of Tax	[1]	$ (15,083)

[1] Net of tax.