Merger and Integration Activity (Detail) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 08, 2012	Sep. 03, 2011
Restructuring Reserve [Roll Forward]
Liability as of December 31, 2011	$ 105
2012 merger and integration charges	7	174
Cash payments	(57)	(293)
Non-cash charges	(6)
Liability as of September 8, 2012	49
Severance And Other Employee Costs
Restructuring Reserve [Roll Forward]
Liability as of December 31, 2011	98
2012 merger and integration charges	2
Cash payments	(50)
Non-cash charges	(6)
Liability as of September 8, 2012	44
Other Costs
Restructuring Reserve [Roll Forward]
Liability as of December 31, 2011	7
2012 merger and integration charges	5
Cash payments	(7)
Liability as of September 8, 2012	$ 5