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Accumulated Other Comprehensive Income (Loss) (Tables) | 12 Months Ended
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Sep. 30, 2017
Accumulated Other Comprehensive Income (Loss) [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] | The following table summarizes the changes in accumulated other comprehensive income (loss) for the year ended September 30, 2017.
(in millions) |  | Foreign Currency Translation Adjustment |  | Pension Benefits Adjustment |  | Accumulated Other Comprehensive Loss
Balances as of September 30, 2016 |  | $ | (20.1 | ) |  | $ | (4.5 | ) |  | $ | (24.6 | )
Other comprehensive income (loss), net of tax before reclassifications |  | (1.4 | ) |  | 1.2 |  |  | (0.2 | )
Amounts reclassified from AOCI, net of tax |  | — |  |  | 0.3 |  |  | 0.3 |
Other comprehensive income (loss), net of tax |  | (1.4 | ) |  | 1.5 |  |  | 0.1 |
Balances as of September 30, 2017 |  | $ | (21.5 | ) |  | $ | (3.0 | ) |  | $ | (24.5 | )

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- Definition Accumulated Other Comprehensive Income (Loss) [Abstract] + References No definition available. + Details
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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
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