Restructuring and Cost Reduction Activities - Restructuring and Cost Reduction Reserves Rollforward (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016	Oct. 03, 2015
Restructuring Reserve [Roll Forward]
Liability, beginning balance			$ 88
Restructuring charges	$ 40	$ 85	164	$ 243
Cash payments			(151)
Non-cash charges and other			(34)
Liability, ending balance	67		67
Employee related costs
Restructuring Reserve [Roll Forward]
Liability, beginning balance			55
Restructuring charges	6	31	26	64
Cash payments			(46)
Non-cash charges and other			0
Liability, ending balance	35		35
Asset impairment
Restructuring Reserve [Roll Forward]
Liability, beginning balance			0
Restructuring charges	0	0	16	18
Cash payments			0
Non-cash charges and other			(16)
Liability, ending balance	0		0
Asset related costs
Restructuring Reserve [Roll Forward]
Liability, beginning balance			0
Restructuring charges	5	15	32	62
Cash payments			(14)
Non-cash charges and other			(18)
Liability, ending balance	0		0
Other costs
Restructuring Reserve [Roll Forward]
Liability, beginning balance			33
Restructuring charges	29	$ 39	90	$ 99
Cash payments			(91)
Non-cash charges and other			0
Liability, ending balance	$ 32		$ 32