Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016
Earnings Per Share [Abstract]
Net income	$ 2,964	$ 2,046
Weighted average shares of common stock outstanding—basic	4,723	4,722
Dilutive effect of employee equity incentive plans (shares)	58	66
Dilutive effect of convertible debt (shares)	100	87
Weighted average shares of common stock outstanding—diluted	4,881	4,875
Basic earnings per share of common stock (in dollars per share)	$ 0.63	$ 0.43
Diluted earnings per share of common stock (in dollars per share)	$ 0.61	$ 0.42