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Segment Information (Revenue By Product Segment) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2014
Revenue | $ 1,140,533 | $ 1,255,242 | $ 1,356,967
CAD [Member] |  |  |
Revenue | 462,307 | 511,582 | 581,508
Extended PLM [Member] |  |  |
Revenue | 456,285 | 524,741 | 599,312
SLM [Member] |  |  |
Revenue | 141,644 | 166,060 | 170,980
IoT Segment [Member] |  |  |
Revenue | $ 80,297 | $ 52,859 | $ 5,167

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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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