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PENSION AND OTHER POSTRETIREMENT PLANS (Details 4) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016
Target allocations for Plan assets |  |
Percentage of Plan Assets | 100.00% | 100.00%
Cash Equivalents |  |
Target allocations for Plan assets |  |
Percentage of Plan Assets | 8.10% | 3.00%
Weighted-Average Expected Long-term Rate of Return (as a percent) | 0.00% |
Cash Equivalents | Minimum |  |
Target allocations for Plan assets |  |
Target Allocation 2018 (as a percent) | 0.00% |
Cash Equivalents | Maximum |  |
Target allocations for Plan assets |  |
Target Allocation 2018 (as a percent) | 5.00% |
Equity Securities |  |
Target allocations for Plan assets |  |
Percentage of Plan Assets | 58.70% | 64.00%
Weighted-Average Expected Long-term Rate of Return (as a percent) | 10.00% |
Equity Securities | Minimum |  |
Target allocations for Plan assets |  |
Target Allocation 2018 (as a percent) | 45.00% |
Equity Securities | Maximum |  |
Target allocations for Plan assets |  |
Target Allocation 2018 (as a percent) | 65.00% |
Fixed income securities |  |
Target allocations for Plan assets |  |
Percentage of Plan Assets | 33.20% | 33.00%
Weighted-Average Expected Long-term Rate of Return (as a percent) | 5.00% |
Fixed income securities | Minimum |  |
Target allocations for Plan assets |  |
Target Allocation 2018 (as a percent) | 35.00% |
Fixed income securities | Maximum |  |
Target allocations for Plan assets |  |
Target Allocation 2018 (as a percent) | 55.00% |

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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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