Revenue (Schedule of Disaggregation of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Disaggregation Of Revenue [Line Items]
Total net sales	$ 786,730	$ 618,619
Aerospace [Member]
Disaggregation Of Revenue [Line Items]
Total net sales	460,756	395,685
Aerospace [Member] | Commercial OEM [Member]
Disaggregation Of Revenue [Line Items]
Total net sales	171,354	138,875
Aerospace [Member] | Commercial Aftermarket [Member]
Disaggregation Of Revenue [Line Items]
Total net sales	137,544	126,643
Aerospace [Member] | Defense OEM [Member]
Disaggregation Of Revenue [Line Items]
Total net sales	93,425	89,762
Aerospace [Member] | Defense Aftermarket [Member]
Disaggregation Of Revenue [Line Items]
Total net sales	58,433	40,405
Industrial [Member]
Disaggregation Of Revenue [Line Items]
Total net sales	325,974	222,934
Industrial [Member] | Power Generation [Member]
Disaggregation Of Revenue [Line Items]
Total net sales	98,106	81,577
Industrial [Member] | Transportation [Member]
Disaggregation Of Revenue [Line Items]
Total net sales	174,469	88,915
Industrial [Member] | Oil and Gas [Member]
Disaggregation Of Revenue [Line Items]
Total net sales	$ 53,399	$ 52,442