Divestitures (Assets Held for Sale) (Details) (USD $) In Thousands, unless otherwise specified	Nov. 30, 2012	Nov. 30, 2011
Assets:
Assets held for sale	$ 68,029	$ 0
Liabilities:
Total liabilities held for sale	25,285	0
Artix, Orbacus and Orbix [Member]
Assets:
Accounts receivable	6,046
Goodwill and intangible assets	24,325
Other long-term assets	4
Impairment reserve	(8,601)
Assets held for sale	21,774
Liabilities:
Deferred revenue	5,287
Total liabilities held for sale	5,287
Actional, DataXtend, ObjectStore, Savvion, and Sonic [Member]
Assets:
Accounts receivable	13,691
Other current assets	412
Goodwill and intangible assets	31,693
Other long-term assets	459
Assets held for sale	46,255
Liabilities:
Deferred revenue	19,998
Total liabilities held for sale	$ 19,998

For the disposal group, including a component of the entity (discontinued operation), the aggregate of amounts due from customers or clients for goods or services that have been delivered or sold in the normal course of business and an amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection and net of any write-downs taken for collection uncertainty on the part of the holder, respectively.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 144

-Paragraph 47

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760

Name:	us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant