Financial Instruments And Derivatives (Schedule Of Reported Financial Assets And Liabilities) (Details) (USD $) In Thousands	Jul. 03, 2011	Dec. 31, 2010	Jul. 03, 2011 Cash Equivalents [Member]	Dec. 31, 2010 Cash Equivalents [Member]	Jul. 03, 2011 Cash Equivalents [Member] Fair Value Inputs Level 1 [Member]	Dec. 31, 2010 Cash Equivalents [Member] Fair Value Inputs Level 1 [Member]	Jul. 03, 2011 Cash Equivalents [Member] Fair Value Inputs Level 2 [Member]	Dec. 31, 2010 Cash Equivalents [Member] Fair Value Inputs Level 2 [Member]	Jul. 03, 2011 Cash Equivalents [Member] Fair Value Inputs Level 3 [Member]	Apr. 04, 2010 UBS Put [Member] Fair Value Inputs Level 3 [Member]	Dec. 31, 2009 UBS Put [Member] Fair Value Inputs Level 3 [Member]	Jul. 03, 2011 Prepayments And Other Current Assets [Member]	Jul. 03, 2011 Prepayments And Other Current Assets [Member] Fair Value Inputs Level 1 [Member]	Jul. 03, 2011 Prepayments And Other Current Assets [Member] Fair Value Inputs Level 2 [Member]	Jul. 03, 2011 Prepayments And Other Current Assets [Member] Fair Value Inputs Level 3 [Member]	Jul. 03, 2011 Marketable Securities [Member]	Dec. 31, 2010 Marketable Securities [Member]	Jul. 03, 2011 Marketable Securities [Member] Fair Value Inputs Level 1 [Member]	Dec. 31, 2010 Marketable Securities [Member] Fair Value Inputs Level 1 [Member]	Jul. 03, 2011 Marketable Securities [Member] Fair Value Inputs Level 2 [Member]	Dec. 31, 2010 Marketable Securities [Member] Fair Value Inputs Level 2 [Member]	Jul. 03, 2011 Marketable Securities [Member] Fair Value Inputs Level 3 [Member]	Jul. 03, 2011 Long-Term Marketable Securities [Member]	Dec. 31, 2010 Long-Term Marketable Securities [Member]	Jul. 03, 2011 Long-Term Marketable Securities [Member] Fair Value Inputs Level 1 [Member]	Dec. 31, 2010 Long-Term Marketable Securities [Member] Fair Value Inputs Level 1 [Member]	Jul. 03, 2011 Long-Term Marketable Securities [Member] Fair Value Inputs Level 2 [Member]	Dec. 31, 2010 Long-Term Marketable Securities [Member] Fair Value Inputs Level 2 [Member]	Jul. 03, 2011 Long-Term Marketable Securities [Member] Fair Value Inputs Level 3 [Member]	Dec. 31, 2010 Other Accrued Liabilities [Member]	Dec. 31, 2010 Other Accrued Liabilities [Member] Fair Value Inputs Level 2 [Member]	Jul. 03, 2011 Fair Value Inputs Level 1 [Member]	Dec. 31, 2010 Fair Value Inputs Level 1 [Member]	Jul. 03, 2011 Fair Value Inputs Level 2 [Member]	Dec. 31, 2010 Fair Value Inputs Level 2 [Member]	Jul. 03, 2011 Fair Value Inputs Level 3 [Member]
Financial assets measured at fair value on a recurring basis	$ 1,049,693	$ 934,207	$ 313,638	$ 276,450	$ 288,944	$ 238,607	$ 24,694	$ 37,843		$ 2,687	$ 2,830	$ 135		$ 135		$ 453,942	$ 409,061	$ 64,529	$ 62,294	$ 389,413	$ 346,767		$ 281,978	$ 248,696	$ 82,978	$ 84,694	$ 199,000	$ 164,002				$ 436,451	$ 385,595	$ 613,242	$ 548,612
Financial liabilities measured at fair value on a recurring basis		$ 157																												$ 157	$ 157				$ 157