Balance Sheet Information-OCI (Details 7) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2013	Sep. 30, 2012	Sep. 29, 2013	Sep. 30, 2012	Dec. 30, 2012
Accumulated net unrealized gain (loss) on:
Available-for-sale investments	$ 10,900		$ 10,900		$ 15,919
Foreign currency translation	15,908		15,908		155,389
Hedging activities	(7,158)		(7,158)		(6,187)
Total accumulated other comprehensive income	19,650		19,650		165,121
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent
Available-for-sale investments	2,272	1,860	(3,200)	5,694
Foreign currency translation	1,462	4,997	(26,398)	(1,845)
Other Comprehensive Income (Loss), Tax	$ 3,734	$ 6,857	$ (29,598)	$ 3,849