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DERIVATIVES (Details 2) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Gross and net fair values of outstanding derivatives (in millions)
Total gross and net fair value, asset	$ 87	$ 24
Total gross and net fair value, liability	(1)
Commodity Contracts | Other current assets
Gross and net fair values of outstanding derivatives (in millions)
Commodity contract derivative asset, gross	87
Commodity Contracts | Accrued liabilities
Gross and net fair values of outstanding derivatives (in millions)
Commodity contract derivative liability, gross	$ (1)

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