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SUPPLEMENTAL OIL AND GAS DISCLOSURES (Unaudited) - Costs Incurred in Oil and Gas Property Acquisitions, Exploration and Development Activities (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]      
Proved $ (157) $ 7 $ 8
Unproved 29 4 57
Exploration 161 328 468
Development 1,085 872 1,996
Costs incurred 1,118 1,211 2,529
Capitalized interest 0 3 32
Asset retirement costs 149 38 (97)
Egypt PSC modernization impacts - Proved and Unproved (145)    
PSC modernization impacts, incremental value 247    
PSC modernization impacts, signature bonus 100    
PSC modernization impacts, other post closing adjustments 2    
Oil and gas proved property      
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]      
PSC modernization impacts, reduction in proved properties 165    
Oil and Gas Properties, Unproved      
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]      
PSC modernization impacts, increase in unproved properties 20    
United States      
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]      
Proved 0 0 3
Unproved 9 4 47
Exploration 6 8 162
Development 545 332 1,500
Costs incurred 560 344 1,712
Capitalized interest 0 0 23
Asset retirement costs 130 9 14
Egypt PSC modernization impacts - Proved and Unproved 0    
Egypt      
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]      
Proved (157) 7 5
Unproved 20 0 10
Exploration 86 102 139
Development 404 378 374
Costs incurred 353 487 528
Capitalized interest 0 0 0
Asset retirement costs 0 0 0
Egypt PSC modernization impacts - Proved and Unproved (145)    
North Sea      
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]      
Proved 0 0 0
Unproved 0 0 0
Exploration 39 68 62
Development 135 162 119
Costs incurred 174 230 181
Capitalized interest 0 0 5
Asset retirement costs 19 29 (111)
Egypt PSC modernization impacts - Proved and Unproved 0    
Other International      
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]      
Proved 0 0 0
Unproved 0 0 0
Exploration 30 150 105
Development 1 0 3
Costs incurred 31 150 108
Capitalized interest 0 3 4
Asset retirement costs 0 $ 0 $ 0
Egypt PSC modernization impacts - Proved and Unproved $ 0