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