Segment Information (Summary of Consolidated Net Sales and Earnings by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Segment Reporting Information [Line Items]
Total net sales	$ 800,663	$ 614,332	$ 2,137,496	$ 1,742,757
Interest expense, net	(11,659)	(8,180)	(34,772)	(23,542)
Consolidated earnings before income taxes	105,738	50,287	177,728	142,129
Aerospace [Member]
Segment Reporting Information [Line Items]
Total net sales	480,531	401,712	1,313,233	1,110,904
Segment earnings (loss)	83,075	56,566	211,823	167,458
Industrial [Member]
Segment Reporting Information [Line Items]
Total net sales	320,132	212,620	824,263	631,853
Segment earnings (loss)	58,197	21,102	107,170	62,029
Unallocated Corporate [Member]
Segment Reporting Information [Line Items]
Segment earnings (loss)	$ (23,875)	$ (19,201)	$ (106,493)	$ (63,816)