Subsequent Events (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended
	Nov. 03, 2011	Dec. 31, 2011	Sep. 25, 2010	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Restructuring Cost And Reserve [Line Items]
Number of employees involved in restructuring plan	1,400
Restructuring and Related Cost, Expected Cost		$ 101			$ 4
Effect on Future Cash Flows, Amount				15	29	56
Restructuring Charges			(4)
Facility Closing [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring and Related Cost, Expected Cost					1
Severance And Costs Of Continuation [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring and Related Cost, Expected Cost		56			3
Contract Or Program Termination Costs [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring and Related Cost, Expected Cost		44
Asset Impairments [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring and Related Cost, Expected Cost		$ 1