Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 26, 2021	Jun. 27, 2020	Jun. 26, 2021	Jun. 27, 2020
Earnings Per Share [Abstract]
Net income	$ 5,061	$ 5,105	$ 8,422	$ 10,766
Weighted average shares of common stock outstanding—basic	4,049	4,246	4,053	4,256
Dilutive effect of employee equity incentive plans (shares)	35	38	37	42
Weighted average shares of common stock outstanding—diluted	4,084	4,284	4,090	4,298
Earnings per share - Basic (in dollars per share)	$ 1.25	$ 1.20	$ 2.08	$ 2.53
Earnings per share - Diluted (in dollars per share)	$ 1.24	$ 1.19	$ 2.06	$ 2.50