Periodic Financial Data (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended						4 Months Ended		12 Months Ended
	Sep. 07, 2014	Jun. 15, 2014	Mar. 23, 2014	Sep. 08, 2013	Jun. 16, 2013	Mar. 24, 2013	Dec. 28, 2014	Dec. 29, 2013	Dec. 28, 2014	Dec. 29, 2013	Dec. 30, 2012
Quarterly Financial Data [Abstract]
Total revenues	$ 446,568	$ 450,463	$ 453,852	$ 404,050	$ 414,009	$ 417,617	$ 642,950	$ 566,547	$ 1,993,833	$ 1,802,223	$ 1,678,439
Operating margin	133,514	134,645	137,042	120,634	125,987	129,806	189,565	172,547	594,766	548,974	501,338
Income before provision for income taxes	56,989	61,539	63,880	46,453	53,445	54,622	76,215	70,579	258,623	225,099	181,187
NET INCOME	$ 35,618	$ 38,462	$ 40,474	$ 30,632	$ 33,270	$ 34,420	$ 48,033	$ 44,663	$ 162,587	$ 142,985	$ 112,392
Earnings per common share - basic	$ 0.65	$ 0.70	$ 0.73	$ 0.56	$ 0.60	$ 0.62	$ 0.88	$ 0.81	$ 2.96	$ 2.58	$ 1.99
Earnings per common share - diluted	$ 0.63	$ 0.67	$ 0.71	$ 0.53	$ 0.57	$ 0.59	$ 0.85	$ 0.78	$ 2.86	$ 2.48	$ 1.91
Common stock dividends declared per share	$ 0.25	$ 0.25	$ 0.25	$ 0.20	$ 0.20	$ 0.20	$ 0.25	$ 0.20	$ 1.00	$ 0.80	$ 3.00