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Financial Instruments Additional Information (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 30, 2013
Derivative [Line Items]  
Fair value of interest rate swaps liability $ 3.4
Maximum
 
Derivative [Line Items]  
Loss in fair value of interest rate swaps 0.5
Foreign Exchange Forward
 
Derivative [Line Items]  
Fair value of the forward contracts liability $ (0.2)