Income Taxes - US and International Taxes (Details) - USD ($) $ in Millions	12 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Income (Loss) from Continuing Operations before Income Taxes, Domestic	$ (2.6)	$ 9.9	$ (13.9)
Income (Loss) from Continuing Operations before Income Taxes, Foreign	113.6	91.6	29.1
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	$ 111.0	$ 101.5	$ 15.2

The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.

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Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

+ References

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The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.

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