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ASSET IMPAIRMENTS (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Fair Value Disclosures [Abstract]    
Proved oil and natural gas properties $ 1,487  
Unproved properties 228  
Unrecovered capital costs 11  
Inventory 7  
Other 3  
Total $ 1,736 $ 0