Income Taxes (Income before Income Tax, Domestic and Foreign) (Details) - USD ($) $ in Millions	12 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Loss before income taxes, U.S.	$ 78.4	$ 97.3	$ 82.7
Loss before income taxes, Non-U.S.	3.7	(1.6)	(4.2)
Net Income Before Income Tax	$ 82.1	$ 95.7	$ 78.5

Net income attributable to Parent before income taxes and discontinued operations

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h)(1)(i))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

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.

+ References

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- References

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