Summary Of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

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,
	2020		2019		2018
Oil	$	2,034	$	2,988	$	2,941
Gas		326		391		482
NGL		335		430		662
Oil, gas and NGL sales		2,695		3,809		4,085
Oil		936		1,534		2,745
Gas		488		645		738
NGL		554		686		871
Marketing and midstream revenues		1,978		2,865		4,354
Total revenues from contracts with customers	$	4,673	$	6,674	$	8,439