ACQUISITIONS, DISPOSITIONS AND OTHER TRANSACTIONS - SUMMARY OF ASSETS HELD FOR SALE (Details) - Anadarko's Africa Assets - Disposed of by sale $ in Millions	Dec. 31, 2019 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Current assets	$ 289
Property, plant and equipment, net	5,481
Long-term receivables and other assets, net	256
Assets held for sale	6,026
Current liabilities	452
Long-term debt, net - finance leases	185
Deferred income taxes	1,112
Asset retirement obligations	181
Other	80
Liabilities of assets held for sale	2,010
Net assets held for sale	$ 4,016