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Employee Stock Plans (Tables)
9 Months Ended
Jul. 27, 2012
Equity Incentive Plan
 
Schedule of Fair Value of Option Granted using Black-Scholes Pricing Model
     Nine Months Ended  
         July 27,    
2012
         July 29,    
2011
 

Volatility

         41.62 – 44.29%             40.80 – 42.78%   

Risk-free interest rate

     0.91 – 2.11%         2.02 – 3.64%   

Expected life (years)

     4.5 – 9.5             4.5 – 9.5       

Dividends

     0             0       
Employee Sharesave Scheme
 
Schedule of Fair Value of Option Granted using Black-Scholes Pricing Model
     Nine Months Ended  
     July 27,
2012
     July 29,
2011
 

Volatility

                      38.96%                          51.10%   

Risk-free interest rate

     0.38%         0.98%   

Expected life (years)

     3             3       

Dividends

     0             0