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Business Combinations (Tables)
9 Months Ended
Jul. 31, 2011
Business Combinations [Abstract]  
Estimated fair value of the acquired assets and assumed liabilities
         
Unbilled receivables
  $ 7,136  
Inventories
    146,272  
Prepaid expenses and other
    32,517  
Other long-term assets
    21,924  
Equipment, furniture and fixtures
    41,213  
Developed technology
    218,774  
In-process research and development
    11,000  
Customer relationships, outstanding purchase orders and contracts
    260,592  
Trade name
    2,000  
Deferred revenue
    (28,086 )
Accrued liabilities
    (33,845 )
Other long-term obligations
    (2,644 )
 
     
Total purchase price allocation
  $ 676,853  
 
     
Pro forma of financial information
                 
    Quarter Ended     Nine Months Ended  
    July 31,     July 31,  
    2010     2010  
Pro forma revenue
  $ 393,843     $ 1,174,719  
 
           
Pro forma net loss
  $ (77,080 )   $ (463,150 )