Other (Income) Expense, Net (Schedule of Other (Income) Expense, Net) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Equity interest in the earnings of the JV	$ (8,468)	$ (4,140)	$ (13,041)	$ (8,815)
Net loss (gain) on sales of assets and businesses	857	(3)	890	(1,541)
Rent income	(93)	(69)	(181)	(412)
Other components of net periodic pension and other postretirement benefit, excluding service cost and interest expense	(2,675)	(2,935)	(5,160)	(5,836)
Other	18	(191)	(68)	(333)
Other (income) expense, net	(12,040)	(4,887)	(20,430)	(15,561)
(Gain) Loss on Investments in Deferred Compensation Program [Member]
Net (gain) loss on investments in deferred compensation program	$ (1,679)	$ 2,451	$ (2,870)	$ 1,376