Consolidated Statement of Shareholders' Equity (Unaudited) - USD ($) shares in Millions, $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment [Member]	Common Stock [Member]	Capital in Excess of Par Value [Member]	Retained Earnings [Member]	Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Items [Member]
Balance (in shares) at Dec. 31, 2018			432				29
Balance at Dec. 31, 2018	$ 27,586	$ 4	$ 432	$ 14,621	$ 18,696	$ 4	$ (3,665)	$ (2,498)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares under employees' and directors' stock plans (in shares)			1				1
Issuance of shares under employees' and directors' stock plans	81		$ 1	106			$ (26)
Stock-based compensation	44			44
Purchases of company common stock (in shares)							3
Purchases of company common stock	(750)						$ (750)
Dividends declared	(76)				(76)
Net income	815				815
Other comprehensive items	(11)							(11)
Balance (in shares) at Mar. 30, 2019			433				33
Balance at Mar. 30, 2019	27,693		$ 433	14,771	19,439		$ (4,441)	(2,509)
Balance (in shares) at Dec. 31, 2019			434				36
Balance at Dec. 31, 2019	29,675	$ (1)	$ 434	15,064	22,092	$ (1)	$ (5,236)	(2,679)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares under employees' and directors' stock plans (in shares)			1				0
Issuance of shares under employees' and directors' stock plans	48		$ 1	76			$ (29)
Stock-based compensation	46			46
Purchases of company common stock (in shares)							4
Purchases of company common stock	(1,500)						$ (1,500)
Dividends declared	(88)				(88)
Net income	788				788
Other comprehensive items	(409)							(409)
Balance (in shares) at Mar. 28, 2020			435				40
Balance at Mar. 28, 2020	$ 28,559		$ 435	$ 15,186	$ 22,791		$ (6,765)	$ (3,088)