Consolidated Statement 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, 2018	$ 11,732	$ 482	$ 2,946	$ 29,326	$ (17,244)	$ (3,778)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	2,464			2,464
Cash dividends declared	(881)			(881)
Equity-based awards	135		53		82
Shares purchased	(184)				(184)
Other comprehensive income (loss)	247					247
Ending balance at Sep. 29, 2019	13,513	482	2,999	30,909	(17,346)	(3,531)
Beginning balance at Jun. 30, 2019	12,877	482	2,959	30,291	(17,379)	(3,476)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	913			913
Cash dividends declared	(295)			(295)
Equity-based awards	73		40		33
Other comprehensive income (loss)	(55)					(55)
Ending balance at Sep. 29, 2019	13,513	482	2,999	30,909	(17,346)	(3,531)
Beginning balance at Dec. 31, 2019	13,577	482	3,039	31,633	(17,358)	(4,219)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	2,165			2,165
Cash dividends declared	(949)			(949)
Equity-based awards	97		43		54
Shares purchased	(501)				(501)
Other comprehensive income (loss)	364					364
Ending balance at Sep. 27, 2020	14,716	482	3,082	32,812	(17,805)	(3,855)
Beginning balance at Jun. 28, 2020	13,890	482	3,050	32,294	(17,809)	(4,127)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	834			834
Cash dividends declared	(316)			(316)
Equity-based awards	36		32		4
Other comprehensive income (loss)	272					272
Ending balance at Sep. 27, 2020	$ 14,716	$ 482	$ 3,082	$ 32,812	$ (17,805)	$ (3,855)