Restructuring and Cost Reduction Activities Reserves Rollforward (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016
Restructuring Reserve [Roll Forward]
Liability, beginning balance	$ 131	$ 88
Restructuring charge	263	325
Cash payments	(339)	(200)
Non-cash charges and other	105	(82)
Liability, ending balance	160	131
Employee related cost
Restructuring Reserve [Roll Forward]
Liability, beginning balance	102	55
Restructuring charge	177	108
Cash payments	(182)	(62)
Restructuring Reserve, Period Increase (Decrease)		1
Non-cash charges and other	0
Liability, ending balance	97	102
Pension curtailment (gain) loss, net
Restructuring Reserve [Roll Forward]
Liability, beginning balance	0	0
Restructuring charge	(148)	1
Cash payments	0	0
Restructuring Reserve, Period Increase (Decrease)		(1)
Non-cash charges and other	148
Liability, ending balance	0	0
Asset impairment
Restructuring Reserve [Roll Forward]
Liability, beginning balance	0	0
Restructuring charge	0	50
Cash payments	0	0
Non-cash charges and other	0	(50)
Liability, ending balance	0	0
Asset related costs
Restructuring Reserve [Roll Forward]
Liability, beginning balance	0	0
Restructuring charge	77	46
Cash payments	(34)	(14)
Non-cash charges and other	(43)	(32)
Liability, ending balance	0	0
Other cost
Restructuring Reserve [Roll Forward]
Liability, beginning balance	29	33
Restructuring charge	157	120
Cash payments	(123)	(124)
Non-cash charges and other	0	0
Liability, ending balance	$ 63	$ 29