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v3.21.2

Revenue from Contracts with Customers Narrative (Details) | 12 Months Ended
--- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2019
Transferred over Time [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Percent of Revenue by Recognition Timing | 2.00% | 1.00% | 2.00%
Transferred at Point in Time [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Percent of Revenue by Recognition Timing | 98.00% | 99.00% | 98.00%

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- Details
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