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Financial Instruments (After Tax Gain/(Loss) Recognized In OCI) (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 25, 2011
Sep. 30, 2012
Sep. 25, 2011
Derivatives, Fair Value [Line Items]        
After Tax Gain/(Loss) Recognized in OCI, Total $ 2,706 $ 2,183 $ 7,012 $ 5,508
Interest Rate Contract [Member]
       
Derivatives, Fair Value [Line Items]        
After Tax Gain/(Loss) Recognized in OCI, Total 2,329 2,433 7,032 5,784
Foreign Exchange Contract [Member]
       
Derivatives, Fair Value [Line Items]        
After Tax Gain/(Loss) Recognized in OCI, Total $ 377 $ (250) $ (20) $ (276)