Borrowings - Narrative (Details) - USD ($) $ in Billions	12 Months Ended
	Jan. 01, 2017	Jan. 03, 2016
Debt Disclosure [Abstract]
Excess of fair value over carrying value of debt	$ 1.6	$ 1.7
Line of Credit Facility, Initiation Date	Sep. 15, 2016
Borrowing capacity under credit facility	$ 10.0
Line of Credit Facility, Expiration Date	Sep. 14, 2017
Short-term borrowings and the current portion of long-term debt	$ 4.7	7.0
Borrowed under the commercial paper program	$ 2.7	$ 4.6