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Fair value measurements (Tables)
 12 Months Ended
Oct. 31, 2011
Fair value measurements (Tables) [Abstract]  
Schedule of assets and liabilities measured at fair value on recurring basis
                                 
    Total     Level 1     Level 2     Level 3  

Assets:

                                

Rabbi trust (a)

   $ 13,678     $ —     $ 13,678     $ —  

Forward exchange contracts (b)

     1,401       —       1,401       —  
   

 

 

    

 

 

    

 

 

    

 

 

  

Total assets at fair value

   $ 15,079     $ —     $ 15,079     $ —  
   

 

 

    

 

 

    

 

 

    

 

 

  

Liabilities:

                                

Deferred compensation plans (c)

   $ 6,278     $ 6,278     $ —     $ —  

Forward exchange contracts (b)

     1,025       —       1,025       —  
   

 

 

    

 

 

    

 

 

    

 

 

  

Total liabilities at fair value

   $ 7,303     $ 6,278     $ 1,025     $ —