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EMPLOYEE BENEFIT PLANS - Asset and target allocation (Details) | Sep. 30, 2018 | Sep. 30, 2017
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EMPLOYEE BENEFIT PLANS |  |
Target Allocation (as a percent) | 100.00% |
Percentage of Plan Assets | 100.00% | 100.00%
U.S. equities |  |
EMPLOYEE BENEFIT PLANS |  |
Target Allocation (as a percent) | 45.00% |
Percentage of Plan Assets | 52.00% | 50.00%
International equities |  |
EMPLOYEE BENEFIT PLANS |  |
Target Allocation (as a percent) | 20.00% |
Percentage of Plan Assets | 15.00% | 16.00%
Fixed income |  |
EMPLOYEE BENEFIT PLANS |  |
Target Allocation (as a percent) | 35.00% |
Percentage of Plan Assets | 33.00% | 34.00%

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- Definition Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(5)(i) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2446-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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