Consolidated Statement of Shareholders' Equity (Unaudited) - USD ($) $ in Millions		Total	Common Stock, Par	Common Stock, Surplus	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Loss
Cumulative-effect adjustments	[1]	$ 0			$ 638		$ (638)
Beginning balance at Dec. 31, 2017		11,435	$ 482	$ 2,872	26,444	$ (15,543)	(2,820)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings		1,585			1,585
Cash dividends declared		(552)			(552)
Equity-based awards		62		(7)		69
Shares purchased		(436)				(436)
Other comprehensive income		(100)					(100)
Ending balance at Jul. 01, 2018		11,994	482	2,865	28,115	(15,910)	(3,558)
Beginning balance at Apr. 01, 2018		11,774	482	2,820	27,605	(15,742)	(3,391)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings		786			786
Cash dividends declared		(276)			(276)
Equity-based awards		56		45		11
Shares purchased		(179)				(179)
Other comprehensive income		(167)					(167)
Ending balance at Jul. 01, 2018		11,994	482	2,865	28,115	(15,910)	(3,558)
Beginning balance at Dec. 31, 2018		11,732	482	2,946	29,326	(17,244)	(3,778)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings		1,551			1,551
Cash dividends declared		(586)			(586)
Equity-based awards		62		13		49
Shares purchased		(184)				(184)
Other comprehensive income		302					302
Ending balance at Jun. 30, 2019		12,877	482	2,959	30,291	(17,379)	(3,476)
Beginning balance at Mar. 31, 2019		12,234	482	2,937	29,781	(17,283)	(3,683)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings		806			806
Cash dividends declared		(296)			(296)
Equity-based awards		24		22		2
Shares purchased		(98)				(98)
Other comprehensive income		207					207
Ending balance at Jun. 30, 2019		$ 12,877	$ 482	$ 2,959	$ 30,291	$ (17,379)	$ (3,476)

[1] Reflects the cumulative effects of Accounting Standards Update (ASU) 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities, and ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which we adopted on January 1, 2018.