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Segment Information (Consolidated Capital Expenditures by Segment) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2015
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | $ 92,336 | $ 175,692 | $ 286,612
Unallocated Corporate [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 17,335 | 22,878 | 23,299
Aerospace [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 62,812 | 90,749 | 150,021
Industrial [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | $ 12,189 | $ 62,065 | $ 113,292

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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585 + Details
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