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ENVIRONMENTAL MATTERS AND ASSET RETIREMENT OBLIGATIONS (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2016 | Dec. 31, 2015
Site Contingency [Line Items] |  |
Portion Of Environmental Reserve Related To Previously Closed, Impaired, And Divested Sites | $ 8 | $ 8
Accrual for Environmental Loss Contingencies [Roll Forward] |  |
Beginning of period | 336 |
End of period | 332 |
Accrual for Environmental Loss Contingencies, Balance Sheet Classification [Abstract] |  |
Accrued Environmental Loss Contingencies, Current | 30 | 35
Accrued Environmental Loss Contingencies, Noncurrent | 302 | 301
Environmental Remediation [Member] |  |
Site Contingency [Line Items] |  |
Loss Contingency, Range of Possible Loss, Minimum | 305 | 308
Loss Contingency, Range of Possible Loss, Maximum | 507 | 516
Accrual for Environmental Loss Contingencies [Roll Forward] |  |
Beginning of period | 308 |
Accrual for Environmental Loss Contingencies, Increase (Decrease) for Revision in Estimates | 3 |
Cash reductions | 6 |
End of period | $ 305 |
Expected Payment Period of Environmental Contingencies | 30 years |
Environmental ARO [Member] |  |
Site Contingency [Line Items] |  |
Best Estimate Accrued to-date For Asset Retirement Obligation | $ 27 | 28
Non Environmental ARO [Member] |  |
Site Contingency [Line Items] |  |
Best Estimate Accrued to-date For Asset Retirement Obligation | $ 45 | $ 46

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- Definition The Increase or Decrease in the accrual for environmental loss in the period from revisions in estimates to existing obligations. The amount does not relate to changes in the environmental accrual related to business acquisitions or divestitures, or to currency movements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.Y.Q2) -URI http://asc.fasb.org/extlink&oid=27011672&loc=d3e149879-122751 + Details
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- Definition Carrying amount as of the balance sheet date of the liability for remediation, site restoration, postclosure, monitoring commitments, or other exit costs associated with the sale, disposal or abandonment of a particular property resulting from unanticipated contamination of the assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.Y.Q4) -URI http://asc.fasb.org/extlink&oid=27011672&loc=d3e149879-122751 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section Y -Paragraph Question 4 + Details
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