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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - ASSET IMPAIRMENTS (Details) - USD ($) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Aug. 31, 2016 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Crude oil supply agreements termination costs | $ 160 | $ 160 |  |  |
Asset impairments and related items |  | 825 |  | $ 10,239 | $ 7,379
Libya |  |  |  |  |
Impairments of assets |  | 61 |  |  |
Oil and Gas | United States |  |  |  |  |
Impairments and related charges of exiting operations |  | (44) | [1] | 1,862 | 3,253
Impairments related to decline in commodity prices and changes in future development plans |  | 15 |  | 1,428 | 1,381
Rig termination charges |  |  |  | 192 |
Other asset impairment related charges |  | 5 |  | 204 | 119
Oil and Gas | Latin America |  |  |  |  |
Impairments related to decline in commodity prices |  | 9 |  | 559 | 57
Oil and Gas | Middle East and North Africa |  |  |  |  |
Impairments of exiting operations |  | 61 |  | 1,658 | 918
Impairments related to decline in commodity prices |  |  |  | 2,833 | 91
Chemical |  |  |  |  |
Impairments of assets |  |  |  | 121 | 149
Midstream and Marketing |  |  |  |  |
Other asset impairment related charges |  | 160 |  | 216 | 40
Impairments of assets |  |  |  | 814 |
Corporate |  |  |  |  |
Severance, spin-off and allowance for doubtful accounts |  | 541 |  | 125 | 13
Corporate | Joslyn oil sands project |  |  |  |  |
Impairments of assets |  |  |  |  | 805
Corporate | California Resources Corporation |  |  |  |  |
Other-than-temporary impairment of investment |  | $ 78 |  | $ 227 | $ 553
[1] | A portion of the 2015 charges are reported in the Midstream and Marketing segment.

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