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DERIVATIVES - Fair Value (Details) - USD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Gross and net fair values of outstanding derivatives (in millions) |  |
Collateral received netted against derivative assets | $ 0 | $ 4
Collateral paid netted against derivative liabilities | 54 | 13
Collateral deposited with clearinghouses and brokers | 53 | 25
Cash-flow hedges | Commodity contracts | Other current assets |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Total net fair value, asset | 3 | 1
Cash-flow hedges | Commodity contracts | Accrued liabilities |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Total net fair value, liability |  | 6
Cash-flow hedges | Level 2 | Commodity contracts | Other current assets |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative asset, gross | 3 | 1
Cash-flow hedges | Level 2 | Commodity contracts | Accrued liabilities |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative liability, gross |  | 6
Not designated as hedging instruments | Commodity contracts | Other current assets |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Netting, asset | (517) | (196)
Total net fair value, asset | 195 | 27
Not designated as hedging instruments | Commodity contracts | Long-term receivables and other assets, net |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Netting, asset | (1) | (2)
Total net fair value, asset | 2 | 3
Not designated as hedging instruments | Commodity contracts | Accrued liabilities |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Netting and collateral, liability | (517) | (196)
Total net fair value, liability | 240 | 27
Not designated as hedging instruments | Commodity contracts | Deferred credits and liabilities |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Netting and collateral, liability | (1) | (2)
Total net fair value, liability | 3 | 5
Not designated as hedging instruments | Level 1 | Commodity contracts | Other current assets |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative asset, gross | 485 | 166
Not designated as hedging instruments | Level 1 | Commodity contracts | Long-term receivables and other assets, net |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative asset, gross | 1 | 2
Not designated as hedging instruments | Level 1 | Commodity contracts | Accrued liabilities |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative liability, gross | 535 | 172
Not designated as hedging instruments | Level 1 | Commodity contracts | Deferred credits and liabilities |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative liability, gross | 1 | 1
Not designated as hedging instruments | Level 2 | Commodity contracts | Other current assets |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative asset, gross | 227 | 57
Not designated as hedging instruments | Level 2 | Commodity contracts | Long-term receivables and other assets, net |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative asset, gross | 2 | 3
Not designated as hedging instruments | Level 2 | Commodity contracts | Accrued liabilities |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative liability, gross | 222 | 51
Not designated as hedging instruments | Level 2 | Commodity contracts | Deferred credits and liabilities |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative liability, gross | $ 3 | $ 6

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