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Reorganization of Business - Reorganization of Businesses Accruals (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2017	Jul. 02, 2016	Jul. 01, 2017	Jul. 02, 2016
Restructuring Reserve [Roll Forward]
January 1, 2017			$ 102
Additional Charges			27
Adjustments			(5)	$ (4)
Amount Used			(56)
July 1, 2017	$ 68		68
Exit costs
Restructuring Reserve [Roll Forward]
January 1, 2017			7
Additional Charges		$ 5	4	$ 5
Adjustments			0
Amount Used			(1)
July 1, 2017	10		10
Employee separation costs
Restructuring Reserve [Roll Forward]
January 1, 2017			95
Additional Charges	8	$ 22	23
Adjustments	(5)		(5)
Amount Used			(55)
July 1, 2017	$ 58		$ 58