Amount of additional income tax expense (benefit) pertaining to continuing operations.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount of deferred tax liability attributable to taxable temporary differences from undistributed earnings of subsidiaries and other recognized entities not within the country of domicile of the entity.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount of foreign earnings repatriated from subsidiaries outside the country of domicile.

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The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

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Amount of unrecognized tax benefits.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.

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Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
Income Taxes (Details) - USD ($) $ in Millions	Jun. 30, 2017	Jun. 30, 2017	Sep. 30, 2017	Sep. 30, 2015	Sep. 30, 2016
Effective tax rate (as a percent)	(430.00%)	(31.00%)
U.S. statutory tax rate (as a percent)		35.00%
Change in valuation allowance		$ 20.1
Unrecognized tax benefits, exclusive of interest and penalties	$ 5.9	5.9			$ 10.2
Unrecognized tax benefits from permanent tax adjustments that, if recognized, would affect the effective rate	3.2	3.2
Estimated unrecognized tax benefits resulting from possible resolution of reviews by domestic and international taxing authorities	3.0	3.0
Deferred tax liability from repatriate of earnings	17.8	17.8
Additional income tax expense (benefit)				$ 35.8
Deferred tax asset valuation allowance	$ 45.6	$ 45.6
Forecast
Repatriated earnings			$ 194.2