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Summary Of Significant Accounting Policies (Deferred Revenue) (Details) - USD ($) $ in Thousands | Sep. 30, 2016 | Sep. 30, 2015
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Deferred Revenue Arrangement [Line Items] |  |
Deferred revenue | $ 413,657 | $ 386,850
Deferred Subscription Revenue Member [Member] |  |
Deferred Revenue Arrangement [Line Items] |  |
Deferred revenue | 102,847 | 37,478
Deferred Support Revenue [Member] |  |
Deferred Revenue Arrangement [Line Items] |  |
Deferred revenue | 297,684 | 331,793
Deferred Professional Service Revenue [Member] |  |
Deferred Revenue Arrangement [Line Items] |  |
Deferred revenue | 8,975 | 12,639
Deferred License and Subscription Revenue [Member] |  |
Deferred Revenue Arrangement [Line Items] |  |
Deferred revenue | $ 4,151 | $ 4,940

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- Definition Amount of deferred revenue as of balance sheet date. Deferred revenue represents collections of cash or other assets related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 13.A.4(a).Q1 Response) -URI http://asc.fasb.org/extlink&oid=27012821&loc=d3e214044-122780 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 13 -Section A + Details
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Balance Type: | credit
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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