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Supplemental Balance Sheet Information (Tables) | 3 Months Ended
--- | ---
Dec. 31, 2020
Balance Sheet Related Disclosures [Abstract] |
Schedule Of Selected Supplemental Balance Sheet Information [Table Text Block] | Selected supplemental asset information is presented below.
| December 31, |  | September 30,
| 2020 |  | 2020
| (in millions)
Cash, cash equivalents and restricted cash: |  |  |
Cash, cash equivalents | $ | 220.8 |  |  | $ | 208.9 |
Restricted cash | 2.2 |  |  | — |
| $ | 223.0 |  |  | $ | 208.9 |
Inventories: |  |  |
Purchased components and raw material | $ | 88.3 |  |  | $ | 87.3 |
Work in process | 32.9 |  |  | 32.4 |
Finished goods | 46.0 |  |  | 42.8 |
| $ | 167.2 |  |  | $ | 162.5 |
Other current assets: |  |  |
Prepaid expenses | $ | 11.7 |  |  | $ | 10.9 |
Non-trade receivables | 9.3 |  |  | 8.5 |
Maintenance and repair supplies and tooling | 3.5 |  |  | 3.7 |
Income taxes | 2.7 |  |  | 5.5 |
Other | 3.1 |  |  | 0.4 |
| $ | 30.3 |  |  | $ | 29.0 |
Property, plant and equipment: |  |  |
Land | $ | 6.2 |  |  | $ | 6.2 |
Buildings | 81.1 |  |  | 80.4 |
Machinery and equipment | 411.1 |  |  | 406.3 |
Construction in progress | 67.5 |  |  | 57.4 |
| 565.9 |  |  | 550.3 |
Accumulated depreciation | (304.5) |  |  | (296.5) |
| $ | 261.4 |  |  | $ | 253.8 |
Other noncurrent assets: |  |  |
Operating lease right-of-use asset | $ | 25.2 |  |  | $ | 25.6 |
Maintenance and repair supplies and tooling | 18.2 |  |  | 17.5 |
Workers compensation reimbursement receivable | 2.0 |  |  | 2.1 |
Pension asset | 2.0 |  |  | 0.9 |
Note receivable | 1.8 |  |  | 1.8 |
Deferred financing fees | 1.7 |  |  | — |
Other | 2.4 |  |  | 3.4 |
| $ | 53.3 |  |  | $ | 51.3 |
Schedule of Accrued Liabilities | Selected supplemental liability information is presented below.
| December 31, |  | September 30,
| 2020 |  | 2020
| (in millions)
Other current liabilities: |  |  |
Compensation and benefits | $ | 23.6 |  |  | $ | 35.5 |
Customer rebates | 12.1 |  |  | 9.6 |
Warranty | 6.5 |  |  | 7.2 |
Deferred revenues | 5.1 |  |  | 5.6 |
Refund liability | 5.1 |  |  | 4.3 |
Taxes other than income taxes | 4.1 |  |  | 3.9 |
Operating lease liabilities | 3.8 |  |  | 4.0 |
Accrued settlements | 3.8 |  |  | 0.2 |
CARES Act payroll tax liabilities | 3.1 |  |  | — |
Restructuring | 1.9 |  |  | 2.8 |
Environmental | 1.2 |  |  | 1.2 |
Interest | 1.1 |  |  | 7.3 |
Income taxes | 0.2 |  |  | 0.2 |
Other | 5.4 |  |  | 4.8 |
| $ | 77.0 |  |  | $ | 86.6 |
Other noncurrent liabilities: |  |  |
Operating lease liabilities | $ | 23.0 |  |  | $ | 23.3 |
Warranty | 6.8 |  |  | 7.2 |
Transition tax | 5.2 |  |  | 5.2 |
Unrecognized income tax benefits | 4.6 |  |  | 4.5 |
NMTC liability | 3.9 |  |  | — |
Workers compensation | 3.8 |  |  | 3.8 |
Asset retirement obligation | 3.6 |  |  | 3.5 |
CARES Act payroll tax liabilities | 3.1 |  |  | 3.3 |
Deferred development grant | 2.5 |  |  | 2.5 |
Other | 3.7 |  |  | 3.0 |
| $ | 60.2 |  |  | $ | 56.3 |
Schedule of Goodwill | The following table summarizes information concerning our goodwill balance for the three months ended December 31, 2020, in millions.
Balance at September 30, 2020 | $ | 99.8 |
Effects of changes in foreign currency exchange rates | 1.3 |
Balance at December 31, 2020 | $ | 101.1 |

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