Summary Of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Schedule of Revenue from Contracts with Customers Disaggregated Based on Type of Good

The following table presents revenue from contracts with customers that are disaggregated based on the type of good.

	Year Ended December 31,
	2019			2018
Oil	$	2,988		$	2,941
Gas		391			482
NGL		430			662
Oil, gas and NGL revenues from    contracts with customers		3,809			4,085
Oil, gas and NGL derivatives		(454	)		457
Upstream revenues		3,355			4,542
Oil		1,534			2,745
Gas		645			738
NGL		686			871
Total marketing revenues from    contracts with customers		2,865			4,354
Total revenues	$	6,220		$	8,896