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TRANSACTIONS WITH PARENT AFFILIATE (Details)
$ in Millions
12 Months Ended
Aug. 04, 2021
USD ($)
Mar. 01, 2021
USD ($)
subsidiary
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Related Party Transaction [Line Items]          
Interest income from APA Corporation, net     $ (51) $ 0 $ 0
Reimbursable costs charged to Parent     $ 17    
Affiliated Entity | Promissory Note          
Related Party Transaction [Line Items]          
Debt face amount $ 250        
Debt term 1 year        
Holding Company Reorganization | Affiliated Entity          
Related Party Transaction [Line Items]          
Number of subsidiaries | subsidiary   3      
Note receivable, term   7 years      
Note receivable, interest rate   4.50%      
Note receivable, accrued interest converted to principal, term   5 years 6 months      
Holding Company Reorganization | Affiliated Entity | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Three Apache Subsidiaries          
Related Party Transaction [Line Items]          
Net assets transferred   $ 483      
Cash and cash equivalents transferred   292      
Oil and gas properties, and working capital items transferred   $ 163