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Accumulated Other Comprehensive Loss | 6 Months Ended
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Mar. 31, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Comprehensive Income (Loss) Note [Text Block] | Accumulated Other Comprehensive Loss Accumulated other comprehensive loss is presented below.
| Pension, net of tax |  | Foreign currency translation |  | Total
| (in millions) |  |  |  |
Balance at September 30, 2019 | $ | (36.0) |  |  | $ | — |  |  | $ | (36.0) |
Current period other comprehensive income | 1.1 |  |  | 1.8 |  |  | $ | 2.9 |
Balance at March 31, 2020 | $ | (34.9) |  |  | $ | 1.8 |  |  | $ | (33.1) |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] | Accumulated other comprehensive loss is presented below.
| Pension, net of tax |  | Foreign currency translation |  | Total
| (in millions) |  |  |  |
Balance at September 30, 2019 | $ | (36.0) |  |  | $ | — |  |  | $ | (36.0) |
Current period other comprehensive income | 1.1 |  |  | 1.8 |  |  | $ | 2.9 |
Balance at March 31, 2020 | $ | (34.9) |  |  | $ | 1.8 |  |  | $ | (33.1) |

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -URI http://asc.fasb.org/topic&trid=2134417 + Details
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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669686-108580 + Details
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