Intangible Assets and Goodwill (Schedule Of Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	Feb. 28, 2015	Nov. 30, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 201,114	$ 78,473
Accumulated Amortization	(65,263)	(57,895)
Net Book Value	135,851us-gaap_FiniteLivedIntangibleAssetsNet	20,578us-gaap_FiniteLivedIntangibleAssetsNet
Purchased technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	118,167	53,789
Accumulated Amortization	(43,797)	(39,575)
Net Book Value	74,370	14,214
Customer-related and other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	67,617	20,554
Accumulated Amortization	(17,744)	(15,195)
Net Book Value	49,873	5,359
Trademarks and trade names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	15,330	4,130
Accumulated Amortization	(3,722)	(3,125)
Net Book Value	$ 11,608	$ 1,005

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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