Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016	Oct. 03, 2015
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net earnings	$ 169,979	$ 147,282	$ 486,793	$ 373,254
Foreign currency translation adjustment and other (net of taxes (benefit) of $1,282 and $3,437 for the three and nine months ended October 1, 2016; and $(824) and $(3,053) for the three and nine months ended October 3, 2015)	(2,085)	(7,944)	(8,557)	(20,838)
Unrealized holding gain (loss) on available-for-sale investments (net of taxes (benefit) of $(188) and $101 for the three and nine months ended October 1, 2016; and $73 and $186 for the three and nine months ended October 3, 2015)	(308)	118	164	292
Comprehensive income	$ 167,586	$ 139,456	$ 478,400	$ 352,708