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Other (Income) Expense, Net (Schedule of Other (Income) Expense, Net) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Equity interest in the earnings of the JV | $ (4,675) | $ (2,386)
Net gain on sales of assets and businesses | (1,538) | (588)
Rent income | (343) | (350)
Other components of net periodic pension and other postretirement benefit, excluding service cost and interest expense | (2,901) | (3,650)
Other | (142) | (166)
Other (income) expense, net | (10,674) | (8,123)
Gain (Loss) on Investments in Deferred Compensation Program [Member] |  |
Net gain on investments in deferred compensation program | $ (1,075) | $ (983)

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