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Revenue Recognition - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2022 | Sep. 30, 2021
Disaggregation of Revenue [Line Items] |  |
Revenue recognized included in contract liability balance at the beginning of the period | $ 10.9 | $ 9.1
Revenue, remaining performance obligation, amount | 15.2 |
Impairment losses recognized in capitalized contract costs | $ 0.0 | 0.0
Minimum |  |
Disaggregation of Revenue [Line Items] |  |
Estimated useful lives of intangible assets | 3 years |
Minimum | Software |  |
Disaggregation of Revenue [Line Items] |  |
Estimated useful lives of intangible assets | 1 year |
Maximum |  |
Disaggregation of Revenue [Line Items] |  |
Estimated useful lives of intangible assets | 7 years |
Maximum | Software |  |
Disaggregation of Revenue [Line Items] |  |
Estimated useful lives of intangible assets | 3 years |
Selling and marketing |  |
Disaggregation of Revenue [Line Items] |  |
Amortization of capitalized contract costs | $ 1.3 | 1.2
Other current and non-current assets |  |
Disaggregation of Revenue [Line Items] |  |
Capitalized contract costs | 2.4 | $ 2.3
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-10-01 |  |
Disaggregation of Revenue [Line Items] |  |
Revenue, remaining performance obligation, amount | $ 13.4 |
Revenue, remaining performance obligation, amount period | 1 year |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-10-01 |  |
Disaggregation of Revenue [Line Items] |  |
Revenue, remaining performance obligation, amount | $ 1.8 |
Revenue, remaining performance obligation, amount period |  |

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