Amortization Expense Related to Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Apr. 30, 2014		Apr. 30, 2013		Apr. 30, 2014		Apr. 30, 2013
Finite Lived Intangible Assets Amortization Expense [Line Items]
Amortization expense of intangible assets	$ 32,935		$ 33,072		$ 61,930		$ 66,262
Developed And Core Technology
Finite Lived Intangible Assets Amortization Expense [Line Items]
Amortization expense of intangible assets	17,989		17,222		33,611		34,356
Customer Relationships
Finite Lived Intangible Assets Amortization Expense [Line Items]
Amortization expense of intangible assets	5,787		5,363		10,839		10,736
Contract Rights Intangible
Finite Lived Intangible Assets Amortization Expense [Line Items]
Amortization expense of intangible assets	7,680		9,171		14,807		18,549
Covenants Not To Compete
Finite Lived Intangible Assets Amortization Expense [Line Items]
Amortization expense of intangible assets	17		33		33		66
Trademarks and Trade Names
Finite Lived Intangible Assets Amortization Expense [Line Items]
Amortization expense of intangible assets	577		484		891		970
Capitalized Software Development Costs
Finite Lived Intangible Assets Amortization Expense [Line Items]
Amortization expense of intangible assets	$ 885	[1]	$ 799	[1]	$ 1,749	[1]	$ 1,585	[1]

[1] Amortization of capitalized software development costs is included in cost of license revenue in the unaudited condensed consolidated statements of operations.