Segment Information (Consolidated Net Sales and Earnings by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Net sales	$ 494,810	$ 524,284	$ 1,475,678	$ 1,435,793
Interest expense, net	(5,858)	(5,899)	(16,788)	(18,030)
Consolidated earnings before income taxes	57,559	62,468	172,222	152,168
Total of Reporting Segments [Member]
Net sales	494,810	524,284	1,475,678	1,435,793
Segment earnings (loss)	76,981	79,560	224,894	201,357
Aerospace [Member]
Net sales	288,480	274,923	825,676	765,816
Segment earnings (loss)	46,362	39,357	127,783	102,195
Energy [Member]
Net sales	206,330	249,361	650,002	669,977
Segment earnings (loss)	30,619	40,203	97,111	99,162
Unallocated Corporate [Member]
Segment earnings (loss)	$ (13,564)	$ (11,193)	$ (35,884)	$ (31,159)

Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h)(1)(i))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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Amount of interest revenue (income derived from investments in debt securities and on cash and cash equivalents) net of interest expense (cost of borrowed funds accounted for as interest).

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, noncontrolling interest and interest expense or income, net.

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