Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Earnings Per Share [Abstract]
Net income	$ 5,006	$ 2,808	$ 9,460	$ 5,772
Weighted average shares of common stock outstanding – basic	4,649	4,710	4,661	4,717
Dilutive effect of employee equity incentive plans (shares)	52	36	59	48
Dilutive effect of convertible debt (shares)	46	99	48	99
Weighted average shares of common stock outstanding – diluted	4,747	4,845	4,768	4,864
Earnings per share - Basic (in dollars per share)	$ 1.08	$ 0.60	$ 2.03	$ 1.22
Earnings per share - Diluted (in dollars per share)	$ 1.05	$ 0.58	$ 1.98	$ 1.19