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Accumulated Other Comprehensive Income (Loss) (Notes) | 12 Months Ended
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Sep. 30, 2018
Accumulated Other Comprehensive Income (Loss) [Abstract] |
Comprehensive Income (Loss) Note [Text Block] | Accumulated Other Comprehensive (Loss) Income Comprehensive income consists of net income and other gains and losses affecting stockholders’ equity that, under U.S. GAAP, are excluded from net income. Other comprehensive (loss) income includes net actuarial gains from defined benefit pension plans and losses on foreign currency translations. The following table summarizes the changes in accumulated other comprehensive (loss) income for the year ended September 30, 2018.
(in millions) |  | Foreign Currency Translation Adjustment |  | Pension Benefits Adjustment |  | Accumulated Other Comprehensive Loss
Balances as of September 30, 2017 |  | $ | (21.5 | ) |  | $ | (3.0 | ) |  | $ | (24.5 | )
Other comprehensive (loss) income, net of tax before reclassifications |  | (9.0 | ) |  | 0.3 |  |  | (8.7 | )
Amounts reclassified from AOCI, net of tax |  | — |  |  | 0.1 |  |  | 0.1 |
Other comprehensive (loss) income, net of tax |  | (9.0 | ) |  | 0.4 |  |  | (8.6 | )
Balances as of September 30, 2018 |  | $ | (30.5 | ) |  | $ | (2.6 | ) |  | $ | (33.1 | )

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- Definition Accumulated Other Comprehensive Income (Loss) [Abstract] + References No definition available. + Details
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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -URI http://asc.fasb.org/topic&trid=2134417 + Details
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