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Revenue (Schedule of Revenue Recognition Time) (Details) - USD ($) $ in Thousands | 3 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Disaggregation of Revenue [Line Items] |  |
Net sales | $ 720,355 | $ 652,811
Point In Time [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 355,457 | 336,176
Over Time [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 364,898 | 316,635
Aerospace [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 473,925 | 392,887
Aerospace [Member] | Point In Time [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 187,515 | 164,014
Aerospace [Member] | Over Time [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 286,410 | 228,873
Industrial [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 246,430 | 259,924
Industrial [Member] | Point In Time [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 167,942 | 172,162
Industrial [Member] | Over Time [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | $ 78,488 | $ 87,762

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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
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