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Leases, Codification Topic 842 (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2020
Lessee, Lease, Description [Line Items] |  |  |
Operating Lease, Expense | $ 5.8 | $ 6.1 | $ 6.3
Finance Lease, Right-of-Use Asset, Amortization | 1.3 | 1.2 | 1.3
Total lease expense | 7.1 | 7.3 | $ 7.6
Operating Lease, Payments | 5.8 | 6.1 |
Finance Lease, Principal Payments | 1.3 | 1.2 |
Operating Lease, Right-of-Use Asset | 26.0 | 27.1 |
Finance Lease, Right-of-Use Asset, after Accumulated Amortization | 1.4 | 2.2 |
Total Right of Use Assets | 27.4 | 29.3 |
Operating lease liability | 4.4 | 4.0 |
Operating Lease, Liability, Noncurrent | 22.4 | 24.6 |
Finance Lease Liability, Current | 0.8 | 1.0 |
Finance Lease, Liability, Noncurrent | 0.8 | 1.2 |
Total Lease Liabilities | $ 28.4 | $ 30.8 |
Operating Lease, Weighted Average Remaining Lease Term | 6 years 8 months 1 day | 7 years 9 months 25 days |
Finance Lease, Weighted Average Remaining Lease Term | 2 years 1 month 24 days | 2 years 6 months 10 days |
Operating Lease, Weighted Average Discount Rate, Percent | 5.48% | 5.36% |
Finance Lease, Weighted Average Discount Rate, Percent | 3.64% | 4.24% |
Lessee, Operating Lease, Liability, to be Paid, Year One | $ 5.9 |  |
Lessee, Operating Lease, Liability, to be Paid, Year Two | 5.7 |  |
Lessee, Operating Lease, Liability, to be Paid, Year Three | 5.1 |  |
Lessee, Operating Lease, Liability, to be Paid, Year Four | 4.7 |  |
Lessee, Operating Lease, Liability, to be Paid, Year Five | 3.9 |  |
Lessee, Operating Lease, Liability, to be Paid, after Year Five | 7.3 |  |
Lessee, Operating Lease, Liability, to be Paid | 32.6 |  |
Lessee, Operating Lease, Liability, Undiscounted Excess Amount | (5.8) |  |
Operating Lease, Liability | 26.8 |  |
Finance Lease, Liability, to be Paid, Year One | 0.9 |  |
Finance Lease, Liability, to be Paid, Year Two | 0.5 |  |
Finance Lease, Liability, to be Paid, Year Three | 0.2 |  |
Finance Lease, Liability, to be Paid, Year Four | 0.1 |  |
Finance Lease, Liability, to be Paid, Year Five | 0.0 |  |
Finance Lease, Liability, to be Paid, after Year Five | 0.0 |  |
Finance Lease, Liability, Payment, Due | 1.7 |  |
Finance Lease, Liability, Undiscounted Excess Amount | (0.1) |  |
Finance Lease, Liability | $ 1.6 |  |

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