Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Jan. 01, 2017	Jan. 03, 2016
Income Tax Disclosure [Abstract]
Increase in effective tax rate (as a percent)	73.30%	0.00%	0.00%
Currently payable:
U.S. taxes	$ 11,969	$ 1,896	$ 2,748
International taxes	1,998	1,708	1,309
Total currently payable	13,967	3,604	4,057
Deferred:
U.S. taxes	(1,956)	294	37
International taxes	4,362	(635)	(307)
Total deferred	2,406	(341)	(270)
Provision for taxes on income	$ 16,373	$ 3,263	$ 3,787