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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, 2021 | Sep. 30, 2020 | Sep. 30, 2019
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% |  |
Goods and Services Transferred at a Point in Time [Member] | Retail Operations [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 91.60% | 92.70% | 90.80%
Goods and Services Transferred at a Point in Time [Member] | Product Manufacturing [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 100.00% |  |
Goods and Services Transferred Over Time [Member] | Retail Operations [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 8.40% | 7.30% | 9.20%

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- Details
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- Details
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- Details
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- Details
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