Restructuring and Cost Reduction Activities Reserves Rollforward (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016
Restructuring Reserve [Roll Forward]
Liability, beginning balance	$ 88	$ 110
Restructuring charge	325	323
Cash payments	(200)	(271)
Non-cash charges and other	(82)	(74)
Liability, ending balance	131	88
Employee related cost
Restructuring Reserve [Roll Forward]
Liability, beginning balance	55	96
Restructuring charge	109	62
Cash payments	(62)	(116)
Restructuring Reserve, Period Increase (Decrease)		13
Non-cash charges and other	0
Liability, ending balance	102	55
Asset impairment
Restructuring Reserve [Roll Forward]
Liability, beginning balance	0	0
Restructuring charge	50	18
Cash payments	0	0
Non-cash charges and other	(50)	(18)
Liability, ending balance	0	0
Asset related costs
Restructuring Reserve [Roll Forward]
Liability, beginning balance	0	0
Restructuring charge	46	103
Cash payments	(14)	(34)
Non-cash charges and other	(32)	(69)
Liability, ending balance	0	0
Other cost
Restructuring Reserve [Roll Forward]
Liability, beginning balance	33	14
Restructuring charge	120	140
Cash payments	(124)	(121)
Non-cash charges and other	0	0
Liability, ending balance	$ 29	$ 33