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Stock-Based Compensation (Tables)
 6 Months Ended
Jun. 11, 2011
Stock-Based Compensation  
Table of Weighted-Average Black-Scholes Fair Value Assumptions
   24 Weeks Ended  
     6/11/11     6/12/10  

Expected life

      6 yrs.        5 yrs.   

Risk free interest rate

      2.6 %      2.3 % 

Expected volatility(a)

     16 %      17 % 

Expected dividend yield

      2.9 %      2.8 % 

 

 

( a ) 

Reflects movements in our stock price over the most recent historical period equivalent to the expected life.