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OTHER LIABILITIES, INCLUDING EMPLOYEE BENEFITS OTHER LIABILITEIS, INCLUDING EMPLOYEE BENEFIT (Components of Other Liabilities) (Details) - USD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Other Liabilities, Including Employee Benefits [Abstract] |  |
Pension, postretirement, postemployment and other employment benefits | $ 1,154 | $ 1,345
Estimated Litigation Liability | 368 | 0
Provision for tax positions | 291 | 167
Legal matters | 81 | 77
Insurance claim reserves | 47 | 51
Accrued oil and gas contract commitments | 0 | 43
Other | 71 | 62
Total other liabilities | $ 2,012 | $ 1,745

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