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Derivatives And Risk Management (Schedule Of Derivatives) (Details) (USD $)
In Thousands
3 Months Ended9 Months Ended
Oct. 01, 2011
Oct. 02, 2010
Oct. 01, 2011
Oct. 02, 2010
Derivatives And Risk Management [Abstract]    
Cash flow hedging instruments$ (3,541)$ 2,396$ (9,800)$ 5,574
Not designated as hedging instruments$ 0$ (1,451)$ 0$ (1,451)