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Employee Benefit Plans - Schedule of Weighted Average Assumptions (Details) | Sep. 30, 2020 | Sep. 30, 2019
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Pension Benefits |  |
Weighted-average assumptions as of September 30 |  |
Discount rate | 2.71% | 3.17%
Expected return on plan assets | 4.89% | 5.49%
Postretirement Health and Other |  |
Weighted-average assumptions as of September 30 |  |
Discount rate | 2.36% | 3.10%

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- Definition Represents the expected rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefit obligation. + References No definition available. + Details
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- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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