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Segment Information (Consolidated Total Assets, Depreciation and Amortization, and Capital Expenditures by Segment) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2014
Assets | $ 2,642,362 | $ 2,512,404 | $ 2,358,603
Other unallocated assets | 209,683 | 206,301 | 234,911
Property, plant and equipment, net | 876,350 | 756,100 |
Depreciation and amortization | 69,036 | 75,235 | 77,353
Capital expenditures | 175,692 | 286,612 | 207,106
Aerospace [Member] |  |  |
Assets | 1,637,522 | 1,566,421 | 1,440,355
Depreciation and amortization | 40,825 | 46,488 | 46,895
Capital expenditures | 90,749 | 150,021 | 134,307
Industrial [Member] |  |  |
Assets | 705,169 | 653,848 | 610,345
Depreciation and amortization | 20,412 | 20,768 | 22,672
Capital expenditures | 62,065 | 113,292 | 55,780
Total of Reporting Segments [Member] |  |  |
Assets | 2,342,691 | 2,220,269 | 2,050,700
Depreciation and amortization | 61,237 | 67,256 | 69,567
Capital expenditures | 152,814 | 263,313 | 190,087
Unallocated Corporate [Member] |  |  |
Assets | 89,988 | 85,834 | 72,992
Depreciation and amortization | 7,799 | 7,979 | 7,786
Capital expenditures | $ 22,878 | $ 23,299 | $ 17,019

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