Revenue (Schedule of Revenue Recognition Time) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation Of Revenue [Line Items]
Net sales	$ 556,675	$ 523,826	$ 1,675,615	$ 1,964,401
Aerospace [Member]
Disaggregation Of Revenue [Line Items]
Net sales	340,912	306,494	1,027,285	1,254,655
Industrial [Member]
Disaggregation Of Revenue [Line Items]
Net sales	215,763	217,332	648,330	709,746
Point In Time [Member]
Disaggregation Of Revenue [Line Items]
Net sales	243,815	236,732	750,782	927,566
Point In Time [Member] | Aerospace [Member]
Disaggregation Of Revenue [Line Items]
Net sales	114,947	98,228	336,477	464,068
Point In Time [Member] | Industrial [Member]
Disaggregation Of Revenue [Line Items]
Net sales	128,868	138,504	414,305	463,498
Over Time [Member]
Disaggregation Of Revenue [Line Items]
Net sales	312,860	287,094	924,833	1,036,835
Over Time [Member] | Aerospace [Member]
Disaggregation Of Revenue [Line Items]
Net sales	225,965	208,266	690,808	790,587
Over Time [Member] | Industrial [Member]
Disaggregation Of Revenue [Line Items]
Net sales	$ 86,895	$ 78,828	$ 234,025	$ 246,248