Segment Information (Summary of Consolidated Net Sales and Earnings by Segment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Consolidated net sales	$ 2,382,790	$ 2,245,832	$ 2,495,665
Interest Expense, net	(32,731)	(32,787)	(34,047)
Consolidated earnings before income taxes	199,898	245,799	281,881
Aerospace [Member]
Segment Reporting Information [Line Items]
Consolidated net sales	1,519,322	1,404,117	1,590,963
Industrial [Member]
Segment Reporting Information [Line Items]
Consolidated net sales	863,468	841,715	904,702
Operating Segments [Member] | Aerospace [Member]
Segment Reporting Information [Line Items]
Consolidated net sales	1,519,322	1,404,117	1,590,963
Segment earnings (loss)	230,933	234,356	310,137
Operating Segments [Member] | Industrial [Member]
Segment Reporting Information [Line Items]
Consolidated net sales	863,468	841,715	904,702
Segment earnings (loss)	82,788	108,672	100,321
Unallocated Corporate [Member]
Segment Reporting Information [Line Items]
Segment earnings (loss)	$ (81,092)	$ (64,442)	$ (94,530)