Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 26, 2015	Dec. 27, 2014
Current
Federal	$ 820,989	$ 758,084	$ 754,187
State	69,342	37,555	78,234
Current income tax expense	890,331	795,639	832,421
Deferred
Federal	20,697	97,586	2,021
State	3,660	10,988	371
Deferred income taxes	24,357	108,574	2,392
Federal	841,686	855,670	756,208
State	73,002	48,543	78,605
Income tax expense	$ 914,688	$ 904,213	$ 834,813