Significant Accounting Policies - Summary of Percentage on Timing of Revenue Recognition by Reportable Segment (Details)	12 Months Ended
	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%