Exit of Disposal Activities (Restructuring and Cost Reduction Reserves Rollforward) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 28, 2014
Restructuring Reserve Roll Forward
Restructuring reserve, beginning balance	$ 78
Restructuring costs incurred	132
Restructuring, cash payments	(88)
Non-cash Charges and Other	(7)
Restructuring reserve, ending balance	115
Employee related costs [Member]
Restructuring Reserve Roll Forward
Restructuring reserve, beginning balance	66
Restructuring costs incurred	52
Restructuring, cash payments	(15)
Restructuring reserve, ending balance	103
Asset related costs [Member]
Restructuring Reserve Roll Forward
Restructuring reserve, beginning balance	0
Restructuring costs incurred	10
Restructuring, cash payments	(3)
Non-cash Charges and Other	(7)
Restructuring reserve, ending balance	0
Other costs [Member]
Restructuring Reserve Roll Forward
Restructuring reserve, beginning balance	12
Restructuring costs incurred	70
Restructuring, cash payments	(70)
Restructuring reserve, ending balance	$ 12