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Share Plans (Tables)
3 Months Ended
Mar. 30, 2013
Assumptions Used in Calculating Estimated Fair Value of Stock Option Award

We estimated the fair value of each stock option award on the date of grant using a Black-Scholes option pricing model, modified for dividends and using the following assumptions:

 

                                                             
     March 30,    
2013    
     March 31,      
2012      
 

 

 

Risk-free interest rate

     0.69%         0.96%   

Expected dividend yield

     2.01%         2.48%   

Expected share price volatility

     36.0%         36.5%   

Expected term (years)

     5.7           5.7