Summary of Significant Accounting Policies - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Oct. 02, 2016	Oct. 02, 2016	Sep. 27, 2015
Tax benefit	$ 47	$ 335
Net Cash Provided by (Used in) Operating Activities		12,114	$ 14,484
Net Cash Provided by (Used in) Financing Activities		(5,087)	(7,842)
New Accounting Pronouncement, Early Adoption, Effect | Accounting Standards Update 2016-09, Statutory Tax Withholding Component
Net Cash Provided by (Used in) Operating Activities		264	287
Net Cash Provided by (Used in) Financing Activities		$ (264)	$ (287)