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EMPLOYEE BENEFIT PLANS (Tables) | 9 Months Ended
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Jun. 30, 2020
Retirement Benefits [Abstract] |
Summary of Defined Benefit Plans Included in Other Income | Defined benefit pension expense (income) included in Other Income (Expense), net was as follows:
| Three Months Ended June 30, |  | Nine Months Ended June 30,
| 2020 |  | 2019 |  | 2020 |  | 2019
Interest cost | $ | 1,148 |  |  | $ | 1,570 |  |  | $ | 3,450 |  |  | $ | 4,711 |
Expected return on plan assets | (2,585 | ) |  | (2,583 | ) |  | (7,757 | ) |  | (7,749 | )
Amortization: |  |  |  |  |  |  |  |  |  |  |
Prior service cost | 3 |  |  | 4 |  |  | 11 |  |  | 11 |
Recognized actuarial loss | 1,042 |  |  | 222 |  |  | 3,126 |  |  | 666 |
Net periodic expense (income) | $ | (392 | ) |  | $ | (787 | ) |  | $ | (1,170 | ) |  | $ | (2,361 | )

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- Definition Tabular disclosure of one or more of the entity's defined benefit pension plans or one or more other defined benefit postretirement plans, separately for pension plans and other postretirement benefit plans including the entity's schedule of fair value of plan assets for defined benefit or other postretirement plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2439-114920 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2410-114920 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2417-114920 + Details
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