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Revenue from Contracts with Customers (Tables) | 12 Months Ended
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Sep. 30, 2020
Revenue From Contract With Customer [Abstract] |
Schedule of Contract Assets and Liabilities | Contract Assets and Contract Liabilities
(in thousands) |  | September 30, |
|  | 2020 |  |  | 2019 |
Contract asset |  | $ | 11,984 |  |  | $ | 21,038 |
Deferred revenue |  | $ | 426,465 |  |  | $ | 396,632 |
Disaggregation of Revenue | Disaggregation of Revenue
(in thousands) |  | Year ended September 30, |
|  | As Reported ASC 606 |  |  | As Reported ASC 606 |  |  | ASC 605 |  |  | As Reported ASC 605 |
|  | 2020 |  |  | 2019 |  |  | 2019 |  |  | 2018 |
Total recurring revenue |  | $ | 1,281,949 |  |  | $ | 1,017,398 |  |  | $ | 1,078,627 |  |  | $ | 978,853 |
Perpetual license |  |  | 32,668 |  |  |  | 70,702 |  |  |  | 72,191 |  |  |  | 109,634 |
Professional services |  |  | 143,798 |  |  |  | 167,531 |  |  |  | 160,676 |  |  |  | 153,337 |
Total revenue |  | $ | 1,458,415 |  |  | $ | 1,255,631 |  |  | $ | 1,311,494 |  |  | $ | 1,241,824 |

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045 + Details
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