CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 24, 2016	Sep. 26, 2015
Statement of Comprehensive Income [Abstract]
Net earnings	$ 421,135	$ 412,314	$ 1,481,211	$ 1,443,973
Other comprehensive earnings:
Unrealized gain (loss) on AFS securities net income taxes	21,263	(58,631)	54,019	(62,548)
Reclassification adjustment for net realized gain on AFS securities net of income taxes	(3,725)	(8,914)	(7,951)	(32,379)
Adjustment to postretirement benefit plan obligation net of income taxes	0	145	0	435
Comprehensive earnings	$ 438,673	$ 344,914	$ 1,527,279	$ 1,349,481