British Pound Sterling Deposits (Details)
6 Months Ended 12 Months Ended
Apr. 30, 2013
GBP (£)
Oct. 31, 2012
GBP (£)
Apr. 30, 2013
USD ($)
Oct. 31, 2012
USD ($)
British Pound Sterling Deposits (Textual) [Abstract]        
British Pound sterling principal deposits £ 39,534,722 £ 24,786,533    
British Pound Sterling principal redemptions 24,716,504 39,634,561    
British Pound Sterling withdrawals (to pay expenses) 73,257 166,507    
British Pound Sterling principal balance £ 59,286,961 £ 44,542,000 $ 92,274,276 $ 71,759,412