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Statements Of Financial Condition (Parenthetical) (USD $)
Jan. 31, 2012
Oct. 31, 2011
Statements Of Financial Condition [Abstract]    
Redeemable Capital Shares, par value $ 0 $ 0
Redeemable Capital Shares, shares authorized 92,000,000 92,000,000
Redeemable Capital Shares, shares issued 1,900,000 1,850,000
Redeemable Capital Shares, shares outstanding 1,900,000 1,850,000