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EMPLOYEE BENEFIT PLANS, MIX AND TARGETED ALLOCATION (Details) | 12 Months Ended |
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Sep. 30, 2016 | Sep. 30, 2015
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocation | 100.00% |
Assets | 100.00% | 100.00%
U.S. equity securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocation | 40.00% |
Assets | 38.00% | 38.00%
International equity securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocation | 20.00% |
Assets | 20.00% | 19.00%
Fixed income |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocation | 40.00% |
Assets | 42.00% | 43.00%

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