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Redeemable Capital Shares (Tables)
 9 Months Ended
Jul. 31, 2012
Redeemable Capital Shares [Abstract]  
Activity in redeemable capital Shares
                                 
    Nine months ended
July 31, 2012
(Unaudited)		     Year ended
October 31, 2011		  
    Shares     U.S. Dollar
Amount		     Shares     U.S. Dollar
Amount		  

Opening balance

     6,350,000     $ 635,831,194       5,850,000     $ 571,687,445  

Shares issued

     50,000       4,917,875       7,700,000       775,887,155  

Shares redeemed

     (1,200,000 )      (118,035,488 )      (7,200,000 )      (725,504,395 ) 

Adjustment to period Shares due to currency movement and other

     —         (6,772,756 )      —         13,760,989  
   

 

 

    

 

 

    

 

 

    

 

 

  

Ending balance

     5,200,000     $ 515,940,825       6,350,000     $ 635,831,194