Equity - Additional Information (Detail) (USD $)	1 Months Ended			6 Months Ended			6 Months Ended	1 Months Ended	6 Months Ended		1 Months Ended
	Jun. 19, 2013	Jun. 17, 2013	Apr. 30, 2013	Jun. 28, 2013	Jun. 29, 2012	Feb. 05, 2013	Jun. 28, 2013 February 5, 2013 Share Repurchase Programs [Member]	Jul. 26, 2013 February 5, 2013 Share Repurchase Programs [Member] Subsequent Event [Member]	Jun. 28, 2013 Common Stock [Member]	Jun. 29, 2012 Common Stock [Member]	Jul. 26, 2013 Common Stock [Member] February 5, 2013 Share Repurchase Programs [Member] Subsequent Event [Member]
Equity [Line Items]
Share repurchase program expired			$ 1,500,000,000
Additional amount of shares authorized to be repurchased						1,500,000,000
Average price per share of repurchased shares				$ 80.39				$ 88.41
Number of common shares repurchased									3,100,000	4,500,000	237,241
Aggregate amount of repurchased shares				248,000,000	315,000,000		80,000,000	21,000,000
Shares repurchased							942,000
Remaining value under share repurchase program							1,420,000,000
Cash dividend, declared per share	$ 0.55		$ 0.55
Cash dividend paid		$ 49,000,000		$ 99,000,000	$ 98,000,000
Dividend payable date	Sep. 16, 2013
Dividend record date	Aug. 19, 2013