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Other (Income) Expense, Net (Schedule of Other (Income) Expense, Net) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Nonoperating Income Expense [Abstract] |  |  |  |
Equity interest in the earnings of the JV (Note 6) | $ (2,688) | $ (931) | $ (8,853) | $ (8,824)
Net gain on sales of assets and businesses | (2,131) | 2,545 | (4,073) | (11,012)
Rent income | (268) | (520) | (1,011) | (1,095)
Net gain on investments in deferred compensation program | (1,850) | (3,456) | (5,107) | (1,680)
Other components of net periodic pension and other postretirement benefit, excluding service cost and interest expense | (3,541) | (2,911) | (10,592) | (8,884)
Other | 123 | (230) | (173) | (496)
Other (income) expense, net | $ (10,355) | $ (5,503) | $ (29,809) | $ (31,991)

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- Definition 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. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + Details
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