Other (Income) Expense, Net (Schedule of Other (Income) Expense, Net) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Equity interest in the earnings of the JV	$ (10,788)	$ (8,836)	$ (29,644)	$ (21,877)
Net loss (gain) on sales of assets and businesses	307	(218)	(565)	672
Gain on non-recurring matter related to a previous acquisition			(4,803)
Rent income	(88)	(92)	(258)	(273)
Other components of net periodic pension and other postretirement benefit, excluding service cost and interest expense	(2,939)	(2,521)	(8,805)	(7,681)
Other	(419)	(77)	(481)	(145)
Other (income) expense, net	(14,438)	(13,001)	(49,461)	(33,431)
Gain on Investments in Deferred Compensation Program [Member]
Net gain on investments in deferred compensation program	$ (511)	$ (1,257)	$ (4,905)	$ (4,127)