Segment Information (Summary of Consolidated Total Assets by Segment) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Sep. 30, 2022
Segment Reporting Information [Line Items]
Consolidated total assets	$ 4,011,533	$ 3,806,446
Property, plant and equipment, net	919,672	910,472
Other assets	313,091	327,419
Unallocated Corporate [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net	106,055	111,760
Other assets	577,555	540,386
Aerospace [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Consolidated total assets	1,817,510	1,773,854
Industrial [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Consolidated total assets	$ 1,510,413	$ 1,380,446