Summary of Information Regarding Stock Options (Detail) (USD $)	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Dec. 25, 2010
Number of Options
Beginning Balance, number of options	2,326,776	2,295,831	2,557,802
Granted	329,500	273,000	230,250
Exercised	(846,294)	(111,355)	(424,354)
Forfeited	(28,800)	(130,700)	(67,867)
Ending Balance, number of options	1,781,182	2,326,776	2,295,831
Weighted Average Exercise Price per Share
Beginning Balance, Weighted Average Exercise Price per Share	$ 40.11	$ 39.73	$ 36.86
Granted, Weighted Average Exercise Price per Share	$ 52.03	$ 41.79	$ 37.41
Exercised, Weighted Average Exercise Price per Share	$ 39.47	$ 34.84	$ 20.73
Forfeited, Weighted Average Exercise Price per Share	$ 43.23	$ 41.48	$ 42.64
Ending Balance, Weighted Average Exercise Price per Share	$ 42.56	$ 40.11	$ 39.73
Options exercisable, Number of Options
Options exercisable at the beginning, Number of Options	1,110,743	936,081	1,225,802
Options exercisable at the ending, Number of Options	661,865	1,110,743	936,081
Options exercisable, Weighted Average Exercise Price per Share
Options exercisable at the beginning, Weighted Average Exercise Price per Share	$ 39.74	$ 38.85	$ 32.43
Options exercisable at the ending, Weighted Average Exercise Price per Share	$ 40.64	$ 39.74	$ 38.85