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Acquisitions, Divestitures and Other Significant Transactions (Tables)
 9 Months Ended
Jul. 31, 2011
Acquisitions ,Divestitures and Other Significant Transactions (Tables) [Abstract]  
Acquisitions
                                                         
    # of     Purchase Price,             Operating     Tangible     Intangible        
    Acquisitions     net of Cash     Revenue     Profit     Assets, net     Assets     Goodwill  
Total 2011 Acquisitions
    5     $ 185,703     $ 24,590     $ 3,490     $ 62,359     $ 80,958     $ 66,329  
Total 2010 Acquisitions
    12     $ 176,156     $ 268,443     $ 19,042     $ 108,991     $ 49,467     $ 129,830  
Note: Purchase price, net of cash acquired, does not factor payments for earn-out provisions on prior acquisitions. Revenue and operating profit represent activity only in the year of acquisition.