Restructuring and Cost Reduction Activities - Restructuring and Cost Reduction Reserves Rollforward (Details) $ in Millions	6 Months Ended
	Jul. 04, 2015 USD ($)
Restructuring Reserve [Roll Forward]
Liability, beginning balance	$ 110
2015 restructuring charges	158
Cash payments	(137)
Non-cash charges and other	(53)
Liability, ending balance	78
Employee related costs
Restructuring Reserve [Roll Forward]
Liability, beginning balance	96
2015 restructuring charges	33
Cash payments	(62)
Non-cash charges and other	(2)
Liability, ending balance	65
Asset related costs
Restructuring Reserve [Roll Forward]
Liability, beginning balance	0
2015 restructuring charges	47
Cash payments	(12)
Non-cash charges and other	(33)
Liability, ending balance	2
Asset impairment
Restructuring Reserve [Roll Forward]
Liability, beginning balance	0
2015 restructuring charges	18
Cash payments	0
Non-cash charges and other	(18)
Liability, ending balance	0
Other costs
Restructuring Reserve [Roll Forward]
Liability, beginning balance	14
2015 restructuring charges	60
Cash payments	(63)
Non-cash charges and other	0
Liability, ending balance	$ 11