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Financial Instruments And Derivatives (Schedule Of Carrying Amounts And Fair Values Of Financial Instruments) (Details) (USD $)
In Thousands
Jul. 03, 2011
Dec. 31, 2010
Jul. 04, 2010
Dec. 31, 2009
Mar. 31, 2009
Marketable securities $ 144,900 $ 185,300      
Cash and cash equivalents 455,398 397,737 403,996 416,737  
Convertible debt 149,873 144,059      
Japan loan         10,000
Fair Value [Member]
         
Marketable securities 735,920 657,757      
Cash and cash equivalents 313,638 276,450      
Convertible debt 542,213 [1] 506,350 [1]      
Japan loan 7,423 8,573      
Carrying Value [Member]
         
Marketable securities 735,920 657,757      
Cash and cash equivalents 313,638 276,450      
Convertible debt 149,873 [1] 144,059 [1]      
Japan loan $ 7,423 $ 8,573      
[1] The carrying value represents the bifurcated debt component only, while the fair value is based on quoted market prices for the convertible note which includes the equity conversion feature.