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Segment Information (Consolidated Total Assets by Segment) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2016
Segment Reporting Information [Line Items]
Assets	$ 3,790,649	$ 2,757,109	$ 2,642,362
Other unallocated assets	240,212	234,301	209,683
Property, plant and equipment, net	1,060,005	922,043
Aerospace [Member]
Segment Reporting Information [Line Items]
Assets	1,805,892	1,722,789	1,637,522
Industrial [Member]
Segment Reporting Information [Line Items]
Assets	1,642,462	695,264	705,169
Unallocated Corporate [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net	$ 102,083	$ 104,755	$ 89,988

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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