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, 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)
Balance (in shares) at Dec. 31, 2020			437				40
Balance at Dec. 31, 2020	34,507		$ 437	15,579	28,116		$ (6,818)	(2,807)
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	21		$ 1	54			$ (34)
Stock-based compensation	51			51
Purchases of company common stock (in shares)							4
Purchases of company common stock	(2,000)						$ (2,000)
Dividends declared	(103)				(103)
Net income	2,337				2,337
Other comprehensive items	245							245
Balance (in shares) at Apr. 03, 2021			438				45
Balance at Apr. 03, 2021	$ 35,058		$ 438	$ 15,684	$ 30,350		$ (8,852)	$ (2,562)