Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 28, 2019	Dec. 29, 2018
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net earnings	$ 780,088	$ 529,454	$ 630,059
Foreign currency translation adjustment and other (net of taxes (benefit) of $3,250, $(1,288) and $(645), respectively)	12,897	(3,408)	(30,575)
Unrealized loss on cash flow hedge (net of tax benefit of $5,003 and $4,137 in 2020 and 2019, respectively)	(15,210)	(12,578)	0
Unrealized holding gain on available-for-sale investments (net of taxes of $56, $290 and $132, respectively)	169	878	405
Comprehensive income	$ 777,944	$ 514,346	$ 599,889