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Accumulated Other Comprehensive Loss (Tabular) | 12 Months Ended
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Sep. 30, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] | Accumulated other comprehensive loss is presented below.
| Foreign currency translation |  | Pension liability, net of tax |  |  |  | Total
| (in millions)
Balance at September 30, 2019 | $ | — |  |  | $ | (36.0) |  |  |  |  | $ | (36.0) |
Other comprehensive income before reclassifications | 8.0 |  |  | 1.2 |  |  |  |  | 9.2 |
Amounts reclassified out of accumulated other comprehensive loss | — |  |  | 2.1 |  |  |  |  | 2.1 |
Other comprehensive income | 8.0 |  |  | 3.3 |  |  |  |  | 11.3 |
Balance at September 30, 2020 | $ | 8.0 |  |  | $ | (32.7) |  |  |  |  | $ | (24.7) |

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