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Business Acquisitions, Goodwill and Intangible Assets (Details) $ in Millions	12 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($) item
Business Acquisitions, Goodwill and Intangible Assets
Number of acquisitions | item		1
Total consideration		$ 5.6
Impairment of goodwill	$ 588.0	$ 125.4

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- References

No definition available.

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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
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- Definition

The number of businesses acquired by the entity during the period.

+ References

No definition available.

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
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