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REVENUE RECOGNITION (Tables)
3 Months Ended
Mar. 31, 2020
Revenue from Contract with Customer [Abstract]  
Schedule of disaggregated revenue
The following table provides disaggregated revenue for the three months ended March 31, 2020 and 2019:
 
Three months ended
March 31,
 
2020
 
2019
 
(in millions)
Oil and natural gas sales
 
 
 
Oil
$
356

 
$
480

Natural gas
38

 
62

NGLs
36

 
59

 
430

 
601

Other revenue
 
 
 
Electricity
13

 
34

Marketing, trading and other
51

 
144

 
64

 
178

Net derivative gain (loss) from commodity contracts
79

 
(89
)
Total revenues
$
573

 
$
690