Revenue (Schedule of Revenue Recognition Time) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Disaggregation Of Revenue [Line Items]
Net sales	$ 915,446	$ 847,688	$ 2,571,800	$ 2,469,761
Aerospace [Member]
Disaggregation Of Revenue [Line Items]
Net sales	595,990	517,560	1,651,601	1,475,828
Industrial [Member]
Disaggregation Of Revenue [Line Items]
Net sales	319,456	330,128	920,199	993,933
Point In Time [Member]
Disaggregation Of Revenue [Line Items]
Net sales	418,264	426,064	1,167,143	1,233,600
Point In Time [Member] | Aerospace [Member]
Disaggregation Of Revenue [Line Items]
Net sales	235,566	219,318	650,576	636,992
Point In Time [Member] | Industrial [Member]
Disaggregation Of Revenue [Line Items]
Net sales	182,698	206,746	516,567	596,608
Over Time [Member]
Disaggregation Of Revenue [Line Items]
Net sales	497,182	421,624	1,404,657	1,236,161
Over Time [Member] | Aerospace [Member]
Disaggregation Of Revenue [Line Items]
Net sales	360,424	298,242	1,001,025	838,836
Over Time [Member] | Industrial [Member]
Disaggregation Of Revenue [Line Items]
Net sales	$ 136,758	$ 123,382	$ 403,632	$ 397,325