Quarterly Results of Operations (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 24, 2016	Jun. 25, 2016	Mar. 26, 2016	Dec. 26, 2015	Sep. 26, 2015	Jun. 27, 2015	Mar. 28, 2015	Dec. 31, 2016	Dec. 26, 2015	Dec. 27, 2014
Quarterly Financial Information Disclosure [Abstract]
Revenues	$ 9,202,362	$ 8,090,649	$ 8,190,537	$ 8,790,561	$ 8,285,839	$ 7,902,144	$ 8,018,031	$ 8,412,745	$ 34,274,109	$ 32,618,759	$ 30,802,466
Costs and expenses	8,472,486	7,555,012	7,531,186	7,963,774	7,607,958	7,344,018	7,349,591	7,638,951	31,522,458	29,940,518	28,401,605
Net earnings	$ 544,477	$ 421,135	$ 478,187	$ 581,889	$ 521,075	$ 412,314	$ 482,741	$ 548,918	$ 2,025,688	$ 1,965,048	$ 1,735,308
Basic and diluted earnings per share (in dollars per share)	$ 0.71	$ 0.55	$ 0.62	$ 0.75	$ 0.68	$ 0.53	$ 0.62	$ 0.71	$ 2.63	$ 2.54	$ 2.23