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Capitalized Software Costs (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022 | Sep. 30, 2022
Property, Plant and Equipment, Gross [Abstract] |  |  |  |  |
Capitalized computer software, gross | $ 29.4 |  | $ 29.4 |  | $ 26.9
Capitalized computer software costs | 0.7 | $ 1.2 | 2.6 | $ 2.8 |
Software Development |  |  |  |  |
Property, Plant and Equipment, Gross [Abstract] |  |  |  |  |
Capitalized computer software, gross | $ 10.8 |  | $ 10.8 |  |

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- Definition Additions made to capitalized computer software costs during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-1 + Details
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- Definition Amount before accumulated amortization of capitalized costs for computer software, including but not limited to, acquired and internally developed computer software. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 985 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481283/985-20-50-1 + Details
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