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Goodwill and Intangible Assets (Narrative) (Details) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2018 USD ($) Segment | Dec. 30, 2017 Segment | Mar. 31, 2018 USD ($) | Sep. 30, 2017 USD ($) Segment
Number of operating segments | Segment | 2 | 2 |  | 3
Number of reportable segments | Segment | 2 |  |  | 3
Intangible Assets, Net (Including Goodwill) | $ 1,421,633 |  | $ 1,421,633 | $ 1,440,680
Foreign currency translation adjustment |  |  | 4,481 |
Goodwill | 1,191,603 |  | 1,191,603 | 1,182,772
Professional Services |  |  |  |
Intangible Assets, Net (Including Goodwill) | 30,600 |  | 30,600 | 30,600
Foreign currency translation adjustment |  |  | 113 |
Goodwill | 29,968 |  | 29,968 | 29,855
Software Products |  |  |  |
Intangible Assets, Net (Including Goodwill) | 1,391,000 |  | 1,391,000 | 1,410,000
Foreign currency translation adjustment |  |  | 4,368 |
Goodwill | $ 1,161,635 |  | $ 1,161,635 | $ 1,152,917

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 + Details
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- Definition Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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- Definition Carrying amount of finite-lived intangible assets, indefinite-lived intangible assets and goodwill. Goodwill is an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Intangible assets are assets, not including financial assets, lacking physical substance. + References No definition available. + Details
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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
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