v3.26.1
Leases - Balance Sheet Information (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Sep. 30, 2025
Finance Leases    
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Property, Plant and Equipment, Net Property, Plant and Equipment, Net
Total Finance Lease Assets $ 27.1 $ 28.3
Current finance lease liabilities 3.5 3.4
Non Current Finance Lease Liabilities 27.8 28.7
Total Finance Lease Liabilities $ 31.3 $ 32.1
Weighted-average remaining lease term (years) 11 years 11 years 6 months
Weighted-average discount rate 6.80% 6.80%
Operating Leases    
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Deferred Income Taxes and Other Assets Deferred Income Taxes and Other Assets
Total Operating Lease Assets $ 17.5 $ 20.2
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Accrued expenses Accrued expenses
Accrued expenses $ 5.6 $ 6.9
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Deferred Income Taxes and Other Liabilities Deferred Income Taxes and Other Liabilities
Deferred Income Taxes and Other Liabilities $ 9.2 $ 10.2
Total Operating Lease Liabilities $ 14.8 $ 17.1
Weighted-average remaining lease term (years) 5 years 9 months 18 days 5 years 7 months 6 days
Weighted-average discount rate 7.20% 6.60%