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Share-Based Awards (Tables)
9 Months Ended
Sep. 28, 2012
Share Based Awards Tables [Abstract]  
Share Based Awards
     Weighted   Weighted 
     Average   Average 
   Option Exercise Options Exercise 
   Shares PriceExercisablePrice 
             
 Outstanding, December 30, 2011 5,478 $ 32.12  3,211 $ 32.27 
  Granted 564   50.32      
  Exercised (695)   27.06      
  Canceled (44)   34.95      
 Outstanding, September 28, 2012 5,303 $ 34.70  3,302 $ 32.81 

  Thirty-nine Weeks Ended
  Sep 28, Sep 30,
  2012 2011
 Expected life in years  6.5    6.5 
 Interest rate  1.3%   2.8%
 Volatility  36.6%   33.7%
 Dividend yield  1.8%   2.0%
 Weighted average fair value per share$ 15.61  $ 13.35 

  Thirty-nine Weeks Ended
  Sep 28, Sep 30,
  2012 2011
 Expected life in years  1.0    1.0 
 Interest rate  0.2%   0.3%
 Volatility  40.6%   27.8%
 Dividend yield  1.7%   2.1%
 Weighted average fair value per share$ 15.58  $ 10.05