Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Millions	Total	Common Stock, Par	Common Stock, Surplus	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Loss
Beginning balance at Dec. 31, 2015	$ 10,440	$ 482	$ 2,730	$ 22,903	$ (12,392)	$ (3,283)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	1,355			1,355
Cash dividends declared	(466)			(466)
Equity-based awards	116		26		90
Shares purchased	(1,189)				(1,189)
Other comprehensive income	323					323
Ending balance at Jul. 03, 2016	10,579	482	2,756	23,792	(13,491)	(2,960)
New Accounting Pronouncement, Cumulative Effect of Change on Equity	(3)			(3)
Beginning balance at Dec. 31, 2016	10,301	482	2,819	24,543	(14,156)	(3,387)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	1,512			1,512
Cash dividends declared	(506)			(506)
Equity-based awards	76		(23)		99
Shares purchased	(893)				(893)
Other comprehensive income	465					465
Ending balance at Jul. 02, 2017	$ 10,952	$ 482	$ 2,796	$ 25,546	$ (14,950)	$ (2,922)