Other (Income) Expense, Net (Schedule of Other (Income) Expense, Net) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Equity interest in the earnings of the JV	$ (8,836)	$ (3,860)	$ (21,877)	$ (12,675)
Net loss (gain) on sales of assets and businesses	(218)	(4)	672	(1,545)
Rent income	(92)	(168)	(273)	(580)
Other components of net periodic pension and other postretirement benefit, excluding service cost and interest expense	(2,521)	(2,884)	(7,681)	(8,720)
Other	(77)	(176)	(145)	(509)
Other (income) expense, net	(13,001)	(3,252)	(33,431)	(18,813)
(Gain) Loss on Investments in Deferred Compensation Program [Member]
Net (gain) loss on investments in deferred compensation program	$ (1,257)	$ 3,840	$ (4,127)	$ 5,216

Amount of defined benefit plan cost (credit), classified as other.

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Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee.

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Amount of realized and unrealized gain (loss) on investment.

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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Amount of income (expense) related to nonoperating activities, classified as other.

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Income earned by providing the use of assets to an outside party in exchange for a payment or series of payments that is nonoperating in nature.

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The net amount of other income and expense amounts, the components of which are not separately disclosed on the income statement and are not individually material for disclosure in the notes.

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