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Segment Information (Revenue By Product Segment) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2016
Revenue | $ 1,241,824 | $ 1,164,039 | $ 1,140,533
CAD [Member] |  |  |
Revenue | 499,772 | 474,608 | 462,307
Extended PLM [Member] |  |  |
Revenue | 483,327 | 454,299 | 456,285
IoT [Member] |  |  |
Revenue | 139,278 | 103,359 | 80,297
Other [Member] |  |  |
Revenue | $ 119,447 | $ 131,773 | $ 141,644

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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=63488584&loc=d3e20235-122688 + Details
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