Commitments and Contingencies Additional Information (Details) - USD ($) $ in Millions	Jun. 30, 2015	Sep. 30, 2014
Property, Plant and Equipment [Line Items]
Lease accumulated amortization	$ 0.2	$ 0.1
Outstanding letters of credit	5.9
Building
Property, Plant and Equipment [Line Items]
Capital lease costs included in balance sheet as property, plant and equipment	6.4
Land
Property, Plant and Equipment [Line Items]
Capital lease costs included in balance sheet as property, plant and equipment	$ 2.1

The total gross amount less the charge for the use of the long-lived depreciable assets subject to a lease meeting the criteria for capitalization.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737

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- Definition

Accumulated amortization on long-term land leases capitalized as part of real property.

+ References

No definition available.

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

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- Definition

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

No definition available.

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