Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2016	Apr. 04, 2015
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net earnings	$ 150,360	$ 110,934
Foreign currency translation adjustment and other (net of taxes (benefits) of $2,122 and $(1,366), respectively)	8,290	(18,510)
Unrealized holding gain on available-for-sale investments (net of taxes of $233 and $245, respectively)	380	386
Comprehensive income	$ 159,030	$ 92,810