Annual report pursuant to Section 13 and 15(d)

Derivative Financial Instruments And Hedging Activities (Current Or Noncurrent Derivative Assets And Liabilities) (Details)

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Derivative Financial Instruments And Hedging Activities (Current Or Noncurrent Derivative Assets And Liabilities) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Jan. 01, 2011
Derivative Financial Instruments and Hedging Activities [Abstract]    
Other current assets $ 39,076 $ 15,296
Accrued current liabilities (19,326) (25,440)
Other assets (noncurrent) 7,252 3,272
Other liabilities (noncurrent) $ (4,187) $ (3,375)