Leases - Weighted Average Lease Terms and Discount Rates (Details)	Sep. 30, 2022	Sep. 30, 2021
Weighted-average remaining lease term
Operating leases	14 years 6 months	13 years 10 months 24 days
Finance leases	2 years 1 month 6 days	2 years 8 months 12 days
Weighted-average discount rate
Operating leases (in percent)	5.94%	5.81%
Finance leases (in percent)	4.45%	4.86%