Balance Sheet Information-OCI (Details 7) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Oct. 02, 2011	Sep. 30, 2012	Oct. 02, 2011	Jan. 01, 2012
Accumulated net unrealized gain (loss) on:
Available-for-sale investments	$ 21,060		$ 21,060		$ 10,849
Foreign currency translation	294,679		294,679		300,788
Hedging activities	(219)		(219)		21,064
Total accumulated other comprehensive income	315,520		315,520		332,701
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent
Available-for-sale investments	1,860	(3,479)	5,694	5,777
Foreign currency translation	4,997	10,906	(1,845)	11,754
Hedging activities	0	1,915	0	3,267
Other Comprehensive Income (Loss), Tax	$ 6,857	$ 9,342	$ 3,849	$ 20,798