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SUPPLEMENTAL ACCOUNT BALANCES - Disaggregation of Revenue (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Disaggregation of revenue        
Oil, natural gas and NGL sales $ 412 $ 447 $ 841 $ 1,162
Oil        
Disaggregation of revenue        
Oil, natural gas and NGL sales 353 362 701 752
Revenue not from contract with customer 28 0 48 0
Natural gas        
Disaggregation of revenue        
Oil, natural gas and NGL sales 14 43 46 306
Revenue not from contract with customer 23 72 71 256
NGLs        
Disaggregation of revenue        
Oil, natural gas and NGL sales 45 42 94 104
Revenue not from contract with customer 0 0 6 3
Revenue from marketing of purchased commodities        
Disaggregation of revenue        
Revenue not from contract with customer $ 51 $ 72 $ 125 $ 259