Leases - Lease Cost - Other Information (Details)	Sep. 30, 2023	Sep. 30, 2022
Leases
Weighted-average remaining lease term - finance lease (in years)	3 years	3 years 2 months 12 days
Weighted-average remaining lease term - operating leases (in years)	1 year 8 months 12 days	3 years
Weighted-average discount rate - finance lease (as a percent)	5.30%	4.90%
Weighted-average discount rate - operating leases (as a percent)	4.90%	4.80%