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)			2				0
Issuance of shares under employees' and directors' stock plans	149		$ 2	177			$ (30)
Stock-based compensation	93			93
Purchases of company common stock (in shares)							4
Purchases of company common stock	(1,500)						$ (1,500)
Dividends declared	(175)				(175)
Net income	1,944				1,944
Other comprehensive items	(310)							(310)
Balance (in shares) at Jun. 27, 2020			436				40
Balance at Jun. 27, 2020	29,875		$ 436	15,334	23,860		$ (6,766)	(2,989)
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)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares under employees' and directors' stock plans (in shares)			1
Issuance of shares under employees' and directors' stock plans	101		$ 1	101			$ (1)
Stock-based compensation	47			47
Dividends declared	(87)				(87)
Net income	1,156				1,156
Other comprehensive items	99							99
Balance (in shares) at Jun. 27, 2020			436				40
Balance at Jun. 27, 2020	29,875		$ 436	15,334	23,860		$ (6,766)	(2,989)
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	108		$ 1	145			$ (38)
Stock-based compensation	102			102
Purchases of company common stock (in shares)							4
Purchases of company common stock	(2,000)						$ (2,000)
Dividends declared	(205)				(205)
Net income	4,165				4,165
Other comprehensive items	177							177
Balance (in shares) at Jul. 03, 2021			438				45
Balance at Jul. 03, 2021	36,854		$ 438	15,826	32,076		$ (8,856)	(2,630)
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)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares under employees' and directors' stock plans (in shares)			0				0
Issuance of shares under employees' and directors' stock plans	87		$ 0	91			$ (4)
Stock-based compensation	51			51
Dividends declared	(102)				(102)
Net income	1,828				1,828
Other comprehensive items	(68)							(68)
Balance (in shares) at Jul. 03, 2021			438				45
Balance at Jul. 03, 2021	$ 36,854		$ 438	$ 15,826	$ 32,076		$ (8,856)	$ (2,630)