Reorganization Of Businesses (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012 employee	Jul. 02, 2011	Jun. 30, 2012 employee	Jul. 02, 2011 employee
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	$ 14	$ 17	$ 23	$ 25
Number of Employees Impacted By Reorganization of Business
Accrual for employee severance, initial payment in current year (in number of employees)	300		300
Restructuring charges in the period for indirect employees' severance (in number of employees)			400
Number Of Employees Expected To Be Paid Remaining Accruals Within One Year	600		600
Restructuring charges in the period for total employee severance (in number of employees)				200
Restructuring Reserve [Roll Forward]
Beginning balance			44
Additional Charges			26
Adjustments			(1)
Amount used			(30)
Ending balance	39		39
Cost Of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	3		3	3
Other Charges [Member]
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	11		20	22
Exit Costs [Member]
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges		13	1	13
Restructuring Reserve [Roll Forward]
Beginning balance			14
Additional Charges			0
Adjustments			3
Amount used			(5)
Ending balance	12		12
Employee Separation Costs [Member]
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges		5	26	14
Restructuring Reserve [Roll Forward]
Beginning balance			30
Additional Charges			26
Adjustments		1	(4)	(2)
Amount used			(25)	(36)
Ending balance	27		27
Restructuring Reversal [Member]
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges			$ 4