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ENVIRONMENTAL MATTERS AND ASSET RETIREMENT OBLIGATIONS (Details) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 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] |  |
Accrual for Environmental Loss Contingencies [Roll Forward] |  |
Beginning of period | 308 |
Changes in estimates recognized in earnings and other | 9 |
Cash reductions | (13) |
End of period | $ 304 |
Expected Payment Period of Environmental Contingencies | 30 years |
Environmental ARO [Member] |  |
Site Contingency [Line Items] |  |
Best Estimate Accrued to-date For Asset Retirement Obligation | $ 28 | 28
Non Environmental ARO [Member] |  |
Site Contingency [Line Items] |  |
Best Estimate Accrued to-date For Asset Retirement Obligation | 45 | 46
Minimum [Member] | Environmental Remediation [Member] |  |
Site Contingency [Line Items] |  |
Loss Contingency, Estimate of Possible Loss | 304 | 308
Maximum [Member] | Environmental Remediation [Member] |  |
Site Contingency [Line Items] |  |
Loss Contingency, Estimate of Possible Loss | $ 512 | $ 516

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- Definition Total costs accrued as of the balance sheet date for environmental loss contingencies. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6395460&loc=d3e13647-108346 + Details
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- Definition Amount of expense (reversal of expense) which increases (decreases) the accrual for environmental loss contingencies from revisions in estimates to existing obligations. Excludes changes related to business acquisitions, divestitures, or currency movement. + 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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