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COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Dec. 31, 2018
Accrual for Environmental Loss Contingencies [Roll Forward] |  |  |  |  |  |
Beginning of period |  |  | $ 755 |  |  |
Accruals for environmental matters deemed probable and reasonably estimable |  |  | 129 |  |  |
Environmental liability payments |  |  | (87) |  |  |
Other |  |  | (3) |  |  |
End of period | $ 794 |  | 794 |  |  |
Probable and reasonably estimable environmental liabilities, net of indemnities | 39 | $ 127 | 53 | $ 184 |  |
Loss Contingency, Classification of Accrual [Abstract] |  |  |  |  |  |
Accrued liabilities |  |  |  |  | $ 184 | $ 175
Other liabilities |  |  |  |  | 610 | 580
Total environmental liabilities | $ 794 |  | 794 |  | $ 794 | $ 755
Sale Of Legacy Remediated Property [Member] |  |  |  |  |  |
Accrual for Environmental Loss Contingencies [Roll Forward] |  |  |  |  |  |
Probable and reasonably estimable environmental liabilities, net of indemnities |  |  | $ (43) |  |  |

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- Definition Total costs accrued as of the balance sheet date for environmental loss contingencies. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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