Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Earnings Per Share [Abstract]
Net income	$ 5,661	$ 3,974
Weighted average shares of common stock outstanding—basic	4,266	4,492
Dilutive effect of employee equity incentive plans (shares)	46	53
Dilutive effect of convertible debt (shares)	0	19
Weighted average shares of common stock outstanding—diluted	4,312	4,564
Earnings per share - Basic (in dollars per share)	$ 1.33	$ 0.88
Earnings per share - Diluted (in dollars per share)	$ 1.31	$ 0.87