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	641			641
Cash dividends declared	(234)			(234)
Equity-based awards	40		(5)		45
Shares purchased	(1,039)				(1,039)
Other comprehensive income	344					344
Ending balance at Apr. 03, 2016	10,192	482	2,725	23,310	(13,386)	(2,939)
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	763			763
Cash dividends declared	(254)			(254)
Equity-based awards	6		(57)		63
Shares purchased	(355)				(355)
Other comprehensive income	125					125
Ending balance at Apr. 02, 2017	$ 10,583	$ 482	$ 2,762	$ 25,049	$ (14,448)	$ (3,262)