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Business Acquisitions (Schedule of Finite-Lived and Indefinite-Lived Intangible Assets Acquired) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2018	Jun. 01, 2018
Business Acquisition, Acquiree - L'Orange [Member]
Business Acquisition [Line Items]
Intangible assets	$ 573,427	$ 573,427
Business Acquisition, Acquiree - L'Orange [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Intangible assets		67,298
Process Technology [Member]
Business Acquisition [Line Items]
Weighted Average Useful Life	22 years
Process Technology [Member] | Business Acquisition, Acquiree - L'Orange [Member]
Business Acquisition [Line Items]
Intangible assets		74,260
Customer Relationships [Member]
Business Acquisition [Line Items]
Weighted Average Useful Life	22 years
Customer Relationships [Member] | Business Acquisition, Acquiree - L'Orange [Member]
Business Acquisition [Line Items]
Intangible assets		388,705
Other Intangibles [Member]
Business Acquisition [Line Items]
Weighted Average Useful Life	3 years
Other Intangibles [Member] | Business Acquisition, Acquiree - L'Orange [Member]
Business Acquisition [Line Items]
Intangible assets		232
Backlog [Member]
Business Acquisition [Line Items]
Weighted Average Useful Life	1 year
Backlog [Member] | Business Acquisition, Acquiree - L'Orange [Member]
Business Acquisition [Line Items]
Intangible assets		$ 42,932

X

- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275

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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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- Definition

The amount of identifiable intangible assets recognized as of the acquisition date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 55
-Paragraph 37
-URI http://asc.fasb.org/extlink&oid=108330185&loc=d3e2207-128464

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
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