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Supplemental Balance Sheet Information (Tables) | 3 Months Ended
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Jun. 30, 2021
Balance Sheet Related Disclosures [Abstract] |
Schedule Of Selected Supplemental Balance Sheet Information [Table Text Block] | Selected supplemental asset information is presented below.
| June 30, |  | September 30,
| 2021 |  | 2020
| (in millions)
Inventories, net: |  |  |
Purchased components and raw material | $ | 102.2 |  |  | $ | 87.3 |
Work in process | 31.2 |  |  | 32.4 |
Finished goods | 43.5 |  |  | 42.8 |
Total inventories, net | $ | 176.9 |  |  | $ | 162.5 |
Other current assets: |  |  |
Prepaid expenses | $ | 10.7 |  |  | $ | 10.9 |
Non-trade receivables | 7.1 |  |  | 8.5 |
Workers’ compensation reimbursement receivable | 1.1 |  |  | — |
Maintenance and repair supplies and tooling | 2.7 |  |  | 3.7 |
Income taxes | 0.6 |  |  | 5.5 |
Other current assets | 4.0 |  |  | 0.4 |
Total other current assets | $ | 26.2 |  |  | $ | 29.0 |
Property, plant and equipment, net: |  |  |
Land | $ | 6.1 |  |  | $ | 6.2 |
Buildings | 81.6 |  |  | 80.4 |
Machinery and equipment | 428.4 |  |  | 406.3 |
Construction in progress | 76.0 |  |  | 57.4 |
Total property, plant and equipment | 592.1 |  |  | 550.3 |
Accumulated depreciation | (316.8) |  |  | (296.5) |
Total property, plant and equipment, net | $ | 275.3 |  |  | $ | 253.8 |
Other noncurrent assets: |  |  |
Operating lease right-of-use assets | $ | 24.0 |  |  | $ | 25.6 |
Maintenance and repair supplies and tooling | 19.1 |  |  | 17.5 |
Workers’ compensation reimbursement receivable | 3.2 |  |  | — |
Pension assets | 4.2 |  |  | 0.9 |
Note receivable | 1.8 |  |  | 1.8 |
Deferred financing fees | 1.4 |  |  | 1.3 |
Other noncurrent assets | 5.2 |  |  | 4.2 |
Total other noncurrent assets | $ | 58.9 |  |  | $ | 51.3 |
Schedule of Accrued Liabilities | Selected supplemental liability information is presented below.
| June 30, |  | September 30,
| 2021 |  | 2020
| (in millions)
Other current liabilities: |  |  |
Compensation and benefits | $ | 38.9 |  |  | $ | 32.8 |
Customer rebates | 16.0 |  |  | 9.6 |
Warranty accrual | 3.1 |  |  | 7.2 |
Deferred revenues | 7.4 |  |  | 5.6 |
Refund liability | 5.5 |  |  | 4.3 |
Taxes other than income taxes | 4.7 |  |  | 3.9 |
Operating lease liabilities | 3.8 |  |  | 4.0 |
Workers’ compensation accrual | 3.6 |  |  | 2.7 |
CARES Act payroll tax liabilities | 3.6 |  |  | — |
Restructuring liabilities | 2.6 |  |  | 2.8 |
Environmental liabilities | 1.2 |  |  | 1.2 |
Interest payable | 1.7 |  |  | 7.3 |
Income taxes payable | — |  |  | 0.2 |
Other | 9.2 |  |  | 5.0 |
Total other current liabilities | $ | 101.3 |  |  | $ | 86.6 |
Other noncurrent liabilities: |  |  |
Operating lease liabilities | $ | 21.8 |  |  | $ | 23.3 |
Warranty accrual | 8.0 |  |  | 7.2 |
Transition tax liability | 4.7 |  |  | 5.2 |
Uncertain tax position liability | 5.0 |  |  | 4.5 |
NMTC liability | 3.9 |  |  | — |
Workers’ compensation accrual | 8.5 |  |  | 3.8 |
Asset retirement obligation | 3.6 |  |  | 3.5 |
CARES Act payroll tax liabilities | 3.6 |  |  | 3.3 |
Deferred development grant | 2.5 |  |  | 2.5 |
Other | 3.2 |  |  | 3.0 |
Total other noncurrent liabilities | $ | 64.8 |  |  | $ | 56.3 |
Schedule of Goodwill | The following table summarizes information concerning our goodwill balance for the nine months ended June 30, 2021, in millions.
Balance at September 30, 2020 | $ | 99.8 |
Acquisition of i2O Water Ltd | 13.6 |
Effects of changes in foreign currency exchange rates | 2.6 |
Balance at June 30, 2021 | $ | 116.0 |

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