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Significant Accounting Policies - Summary of Percentage on Timing of Revenue Recognition by Reportable Segment (Details) | 12 Months Ended
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Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2021
Retail Operations [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 100.00% | 100.00% | 100.00%
Product Manufacturing [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 100.00% | 100.00% | 100.00%
Goods and Services Transferred at a Point in Time [Member] | Retail Operations [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 87.20% | 90.90% | 91.60%
Goods and Services Transferred at a Point in Time [Member] | Product Manufacturing [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 100.00% | 100.00% | 100.00%
Goods and Services Transferred Over Time [Member] | Retail Operations [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 12.80% | 9.10% | 8.40%

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