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Income Taxes (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	$ 0.7	$ 0.6
Income tax expense (benefit)	22.0	24.5	$ 22.1
Deferred Tax Assets, Tax Credit Carryforwards, Foreign		4.5
Unrecognized Tax Benefits	4.7	4.8	$ 4.5
Unrecognized Tax Benefits, Decrease Resulting from Current Period Tax Positions	(0.4)	0.0
Unrecognized Tax Benefits, Decrease Resulting from Foreign Currency Translation	(0.1)	0.0
transition tax liability	$ 4.1	$ 4.7

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign tax credit carryforwards.

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

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