Segment Information (Summary of Consolidated Net Sales and Earnings by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Segment Reporting Information [Line Items]
Total net sales	$ 718,214	$ 586,839	$ 1,336,833	$ 1,128,425
Interest expense, net	(12,337)	(7,697)	(23,113)	(15,362)
Consolidated earnings before income taxes	40,241	54,096	71,990	91,842
Aerospace [Member]
Segment Reporting Information [Line Items]
Total net sales	437,017	372,757	832,702	709,192
Segment earnings (loss)	73,314	59,809	128,748	110,892
Industrial [Member]
Segment Reporting Information [Line Items]
Total net sales	281,197	214,082	504,131	419,233
Segment earnings (loss)	37,571	17,234	48,973	40,927
Unallocated Corporate [Member]
Segment Reporting Information [Line Items]
Segment earnings (loss)	$ (58,307)	$ (15,250)	$ (82,618)	$ (44,615)