XML 123 R40.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Revenue Recognition (Tables)
 12 Months Ended
Dec. 31, 2019
Revenue Recognition [Abstract]  
Disaggregation of Revenue
Disaggregated revenue from contracts with purchasers by product type is as follows:
Year Ended December 31,
20192018
 (in millions)
Oil sales$4,168  $3,991  
NGL sales510  695  
Gas sales238  305  
Total oil and gas sales4,916  4,991  
Sales of purchased oil4,726  4,339  
Sales of purchased gas29  49  
Total sales of purchased oil and gas4,755  4,388  
Total revenue from contracts with purchasers$9,671  $9,379