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Interest and Other Income (Tables)
12 Months Ended
Oct. 31, 2011
Interest and Other Income (Tables) [Abstract]  
Revenues and expenses of non-core ancillary businesses
                         
    2011     2010     2009  
Revenue
  $ 66,224     $ 51,458     $ 53,619  
Expense
  $ 60,967     $ 46,059     $ 46,296