Income Taxes Operating Loss Carryforwards (Details) - USD ($) $ in Millions	Jun. 30, 2020	Sep. 30, 2019	Sep. 30, 2016
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 6.9	$ 7.1
Deferred Tax Assets, Tax Credit Carryforwards, Foreign	5.1
Deferred Tax Assets, Valuation Allowance	8.4	$ 8.5	$ 3.6
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 5.6

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

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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 operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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