DERIVATIVES - Fair Value (Details) - Commodity Contracts - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Presented in the Balance Sheet
Fair Value of Derivatives
Total derivatives	$ 28	$ (97)
Presented in the Balance Sheet \| Other current assets
Fair Value of Derivatives
Net Fair Value Presented in the Balance Sheet	56	39
Presented in the Balance Sheet \| Other assets
Fair Value of Derivatives
Net Fair Value Presented in the Balance Sheet	4	19
Presented in the Balance Sheet \| Accrued liabilities
Fair Value of Derivatives
Net Fair Value Presented in the Balance Sheet	(19)	(103)
Presented in the Balance Sheet \| Other long-term liabilities
Fair Value of Derivatives
Net Fair Value Presented in the Balance Sheet	(13)	(52)
Recognized Fair Value
Fair Value of Derivatives
Total derivatives	28	(97)
Recognized Fair Value \| Other current assets
Fair Value of Derivatives
Gross Amounts Recognized at Fair Value	59	88
Gross Amounts Offset in the Balance Sheet	(3)	(49)
Recognized Fair Value \| Other assets
Fair Value of Derivatives
Gross Amounts Recognized at Fair Value	4	25
Gross Amounts Offset in the Balance Sheet		(6)
Recognized Fair Value \| Accrued liabilities
Fair Value of Derivatives
Gross Amounts Recognized at Fair Value	(22)	(152)
Gross Amounts Offset in the Balance Sheet	3	49
Recognized Fair Value \| Other long-term liabilities
Fair Value of Derivatives
Gross Amounts Recognized at Fair Value	$ (13)	(58)
Gross Amounts Offset in the Balance Sheet		$ 6

Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

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