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DIVESTITURES AND OTHER TRANSACTIONS - SUMMARY OF ASSETS HELD FOR SALE (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Anadarko's Africa Assets | Disposed of by sale |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Current assets | $ 37 | $ 40
Property, plant and equipment, net | 1,364 | 3,720
Long-term receivables and other assets, net | 32 | 110
Assets held for sale | 1,433 | 3,870
Current liabilities | 84 | 264
Long-term debt, net - finance leases | 175 | 185
Deferred income taxes | 328 | 1,112
Asset retirement obligations | 166 | 155
Other | 0 | 2
Liabilities of assets held for sale | 753 | 1,718
Net assets held for sale | $ 680 | 2,152
Algeria Africa Assets | Reclassifications |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Current assets |  | 249
Property, plant and equipment, net |  | 1,761
Long-term receivables and other assets, net |  | 146
Assets held for sale |  | 2,156
Current liabilities |  | 188
Other |  | 104
Liabilities of assets held for sale |  | $ 292

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