Reorganization Of Businesses (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013	Dec. 31, 2013
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	$ 22	$ 11
Restructuring charges	18
Restructuring reversals no longer needed	(2)	(5)
Restructuring Reserve	85		109
Number of Employees Impacted By Reorganization of Business
Restructuring charges settled with cash	40
Cost Of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	1
Other Expense [Member]
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	21
Employee separation costs
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	6
Restructuring charges	12	16
Restructuring reversals no longer needed	(2)
Restructuring Reserve	74		103
Number of Employees Impacted By Reorganization of Business
Restructuring charges in the period for total employee severance (in number of employees)	200
Restructuring charges settled with cash	39
Number of employees expected to be paid (in number of employees)	600
Exit costs
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	6
Restructuring charges	6
Restructuring reversals no longer needed	0
Restructuring Reserve	11		6
Number of Employees Impacted By Reorganization of Business
Restructuring charges settled with cash	$ 1