PENSION AND OTHER POSTRETIREMENT PLANS - Weighted-Average Assumptions for Principal Retirement and Other Postretirement Benefit Plans (Details) |
12 Months Ended | ||
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Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2014 |
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| Pension | |||
| Defined Benefit Plan Disclosure [Line Items] | |||
| Discount rate | 3.51% | 4.25% | 4.25% |
| Return on plan assets | 7.25% | 7.75% | 7.75% |
| Compensation increase | 3.50% | 3.50% | 3.50% |
| Other Postretirement | |||
| Defined Benefit Plan Disclosure [Line Items] | |||
| Discount rate | 3.42% | 4.25% | 4.25% |
| Return on plan assets | 0.00% | 0.00% | 0.00% |
| Compensation increase | 0.00% | 0.00% | 0.00% |
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- Definition The interest rate used to adjust for the time value of money. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition An assumption as to the 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 benefits included in the benefit obligation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Expected rate of compensation increases (for pay-related plans). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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