Goodwill And Intangible Assets (Amortization Expenses Of Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Oct. 31, 2011		Oct. 31, 2010		Oct. 31, 2009
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	$ 72,384		$ 50,649		$ 48,422
Core/Developed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	44,869		33,232		29,644
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	13,030		9,325		11,109
Contract Rights Intangible [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	10,279		3,861		3,399
Covenants Not To Compete [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	222		637		741
Trademarks And Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	1,020		630		581
Capitalized Software Development Costs [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	$ 2,964	[1]	$ 2,964	[1]	$ 2,948	[1]

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