Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

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Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 24
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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Description of timing for satisfying performance obligation in contract with customer. Includes, but is not limited to, as services are rendered, and upon shipment, delivery or completion of service.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
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Summary of Significant Accounting Policies - (Narrative) (Details) - USD ($) $ in Millions	9 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Mar. 31, 2019	Oct. 01, 2018	Sep. 30, 2018	Mar. 31, 2018	Sep. 30, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue recognition, new accounting pronouncement, timing	less than one year
Increase in net cash used by investing activities	$ 563.5	$ 575.5
Restatement Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase in net cash used by investing activities		$ 2.6
Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of change in accounting for employee share-based payments increase (decrease)			$ 0.0		$ 7.1	$ 0.0	$ 0.0
Retained Earnings \| Accounting Standards Update 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of change in accounting for employee share-based payments increase (decrease)				$ 7.1