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Goodwill and Intangible Assets - Amortization Expense Related to Intangible Assets (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Jul. 31, 2014
Jul. 31, 2013
Jul. 31, 2014
Jul. 31, 2013
Finite Lived Intangible Assets Amortization Expense [Line Items]        
Amortization expense of intangible assets $ 33,715 $ 33,092 $ 95,645 $ 99,354
Core/developed technology
        
Finite Lived Intangible Assets Amortization Expense [Line Items]        
Amortization expense of intangible assets 18,354 17,456 51,966 51,812
Customer relationships
        
Finite Lived Intangible Assets Amortization Expense [Line Items]        
Amortization expense of intangible assets 5,816 5,352 16,655 16,088
Contract rights intangible
        
Finite Lived Intangible Assets Amortization Expense [Line Items]        
Amortization expense of intangible assets 7,913 9,076 22,719 27,624
Covenants not to compete
        
Finite Lived Intangible Assets Amortization Expense [Line Items]        
Amortization expense of intangible assets 17 33 50 99
Trademarks and trade names
        
Finite Lived Intangible Assets Amortization Expense [Line Items]        
Amortization expense of intangible assets 709 363 1,600 1,333
Capitalized software development costs
        
Finite Lived Intangible Assets Amortization Expense [Line Items]        
Amortization expense of intangible assets $ 906 [1] $ 812 [1] $ 2,655 [1] $ 2,398 [1]
[1] Amortization of capitalized software development costs is included in cost of license revenue in the unaudited condensed consolidated statements of operations.