XML 40 R20.htm IDEA: XBRL DOCUMENT v2.4.0.6
Redeemable Capital Shares (Details) (USD $)
 6 Months Ended 12 Months Ended
Apr. 30, 2012
Oct. 31, 2011
Schedule of Activity in Redeemable Capital Shares    
Redeemable capital shares, Opening balance, shares 1,850,000 2,800,000
Shares issued, shares 8,100,000 25,450,000
Shares redeemed, shares (8,050,000) (26,400,000)
Adjustment to period Shares due to currency movement and other, shares      
Redeemable capital shares, Ending balance, shares 1,900,000 1,850,000
Redeemable capital shares, Opening balance, value $ 257,096,734 $ 387,741,044
Common stock issued, value 1,064,770,149 3,532,613,866
Shares redeemed, value (1,058,157,443) (3,664,496,177)
Adjustment to period Shares due to currency movement and other (13,480,032) 1,238,001
Redeemable capital Shares, Ending balance, value $ 250,229,408 $ 257,096,734