Goodwill and Intangible Assets (Components of Intangible Assets) (Details) (USD $) In Thousands	Jul. 01, 2011	Dec. 31, 2010
Intangible Assets, Gross Carrying Amount	$ 523,539	$ 463,043
Intangible Assets, Accumulated Amortization	(292,618)	(258,095)
Intangible Assets, Net Carrying Amount	230,921	204,948
Developed Product Technology [Member]
Intangible Assets, Gross Carrying Amount	275,666	247,575
Intangible Assets, Accumulated Amortization	(168,330)	(148,171)
Intangible Assets, Net Carrying Amount	107,336	99,404
Trade Names and Trademarks [Member]
Intangible Assets, Gross Carrying Amount	23,876	22,136
Intangible Assets, Accumulated Amortization	(17,436)	(16,449)
Intangible Assets, Net Carrying Amount	6,440	5,687
Customer Relationships [Member]
Intangible Assets, Gross Carrying Amount	169,747	143,125
Intangible Assets, Accumulated Amortization	(78,432)	(68,104)
Intangible Assets, Net Carrying Amount	91,315	75,021
Distribution Rights and Other Intellectual Properties [Member]
Intangible Assets, Gross Carrying Amount	54,250	50,207
Intangible Assets, Accumulated Amortization	(28,420)	(25,371)
Intangible Assets, Net Carrying Amount	$ 25,830	$ 24,836