Amortization Expense Related to Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Oct. 31, 2012		Oct. 31, 2011		Oct. 31, 2010
Finite Lived Intangible Assets Amortization Expense [Line Items]
Amortization expense of intangible assets	$ 102,853		$ 72,384		$ 50,649
Developed And Core Technology
Finite Lived Intangible Assets Amortization Expense [Line Items]
Amortization expense of intangible assets	57,124		44,869		33,232
Customer Relationships
Finite Lived Intangible Assets Amortization Expense [Line Items]
Amortization expense of intangible assets	17,141		13,030		9,325
Contract Rights Intangible
Finite Lived Intangible Assets Amortization Expense [Line Items]
Amortization expense of intangible assets	24,113		10,279		3,861
Covenants Not To Compete
Finite Lived Intangible Assets Amortization Expense [Line Items]
Amortization expense of intangible assets	248		222		637
Trademarks Trade Names
Finite Lived Intangible Assets Amortization Expense [Line Items]
Amortization expense of intangible assets	1,233		1,020		630
Capitalized Software Development Costs
Finite Lived Intangible Assets Amortization Expense [Line Items]
Amortization expense of intangible assets	$ 2,994	[1]	$ 2,964	[1]	$ 2,964	[1]

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