Reorganization Of Businesses (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013	Dec. 31, 2013
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	$ 28	$ 18	$ 38	$ 25
Restructuring charges			53
Restructuring reversals no longer needed		(1)	(2)	(4)
Restructuring Reserve	85		85		109
Number of Employees Impacted By Reorganization of Business
Restructuring charges settled with cash			75
Cost Of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	3	5	4	5
Other Expense [Member]
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	25	13	34	20
Employee separation costs
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges			34
Restructuring charges		19	47	29
Restructuring reversals no longer needed			(2)
Restructuring Reserve	78		78		103
Number of Employees Impacted By Reorganization of Business
Restructuring charges in the period for total employee severance (in number of employees)			600
Restructuring charges settled with cash			70
Number of employees expected to be paid (in number of employees)	750		750
Exit costs
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges			4
Restructuring charges			6
Restructuring reversals no longer needed			0
Restructuring Reserve	7		7		6
Number of Employees Impacted By Reorganization of Business
Restructuring charges settled with cash			$ 5