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]	$ (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		2,276			2,276
Cash dividends declared		(758)			(758)
Equity-based awards		149		22		127
Shares purchased		(1,137)				(1,137)
Other comprehensive income		736					736
Ending balance at Oct. 01, 2017		11,564	482	2,841	26,058	(15,166)	(2,651)
Cumulative-effect adjustments		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		2,436			2,436
Cash dividends declared		(827)			(827)
Equity-based awards		137		42		95
Shares purchased		(523)				(523)
Other comprehensive income		97					97
Ending balance at Sep. 30, 2018		$ 12,755	$ 482	$ 2,914	$ 28,691	$ (15,971)	$ (3,361)

[1] Reflects the cumulative effect of Accounting Standards Update (ASU) 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory, which we adopted on January 1, 2017.