Quarterly Information (unaudited) Quarterly Results of Operations (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 30, 2017	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016	Sep. 24, 2016	Jun. 25, 2016	Mar. 26, 2016	Dec. 30, 2017	Dec. 31, 2016	Dec. 26, 2015
Quarterly Financial Information Disclosure [Abstract]
Revenues	$ 9,014,985	$ 8,586,080	$ 8,482,827	$ 8,752,946	$ 9,202,362	$ 8,090,649	$ 8,190,537	$ 8,790,561	$ 34,836,838	$ 34,274,109	$ 32,618,759
Costs and Expenses	8,270,270	7,951,286	7,869,524	8,012,934	8,472,486	7,555,012	7,531,186	7,963,774	32,104,014	31,522,458	29,940,518
Net earnings	$ 766,624	$ 474,927	$ 495,072	$ 555,271	$ 544,477	$ 421,135	$ 478,187	$ 581,889	$ 2,291,894	$ 2,025,688	$ 1,965,048
Basic and diluted earnings per share (in dollars per share)	$ 1.04	$ 0.63	$ 0.65	$ 0.73	$ 0.71	$ 0.55	$ 0.62	$ 0.75	$ 3.04	$ 2.63	$ 2.54