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Supplemental Balance Sheet Information (Schedule of Accrued Liabilities) (Details) - USD ($) $ in Millions | Jun. 30, 2024 | Sep. 30, 2023
--- | --- | ---
Other current liabilities: |  |
Compensation and benefits | $ 47.3 | $ 33.8
Customer rebates | 14.6 | 14.6
Accrued Income Taxes | 15.7 | 8.5
Warranty accrual | 8.8 | 8.6
Deferred Revenue, Current | 5.1 | 9.2
Customer Refund Liability, Current | 8.3 | 6.7
Accrual for Taxes Other than Income Taxes | 2.9 | 2.0
Operating lease liability, current | 5.5 | 4.9
Workers' Compensation Liability, Current | 4.4 | 4.0
Restructuring reserve, current | 4.1 | 6.6
Interest Payable | 0.8 | 5.3
Other Liabilities, Current | 8.5 | 11.0
Accrued liabilities | 126.0 | 115.2
Other Liabilities, Noncurrent [Abstract] |  |
Operating lease liability, noncurrent | 23.6 | 19.8
Product Warranty Accrual, Noncurrent | 4.8 | 7.1
Transition Tax Liability | 1.7 | 3.1
Unrecognized Tax Benefits | 4.1 | 5.0
New market tax credit liabilities | 3.9 | 3.9
Workers' Compensation Liability, Noncurrent | 6.0 | 5.9
Accrued Environmental Loss Contingencies, Noncurrent | 4.2 | 4.2
Deferred Revenue, Noncurrent | 6.0 | 0.0
Grant yet to be earned | 2.5 | 2.5
Other Accrued Liabilities, Noncurrent | 3.6 | 2.7
Other Liabilities, Noncurrent, Total | $ 60.4 | $ 54.2

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