Productivity Plan Activity (Detail) (Productivity Plan, USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 23, 2013	Mar. 24, 2012
Restructuring Reserve [Roll Forward]
Liability as of December 29, 2012	$ 127
2013 restructuring charges	11	33
Cash payments	(30)
Non-cash charges and other	(7)
Liability as of March 23, 2013	101
Severance And Other Employee Costs
Restructuring Reserve [Roll Forward]
Liability as of December 29, 2012	91
2013 restructuring charges	2
Cash payments	(21)
Non-cash charges and other	(6)
Liability as of March 23, 2013	66
Asset Impairment
Restructuring Reserve [Roll Forward]
Liability as of December 29, 2012
2013 restructuring charges	1
Cash payments
Non-cash charges and other	(1)
Liability as of March 23, 2013
Other Costs
Restructuring Reserve [Roll Forward]
Liability as of December 29, 2012	36
2013 restructuring charges	8
Cash payments	(9)
Non-cash charges and other
Liability as of March 23, 2013	$ 35