Major Customers - Consolidated Oil, NGL And Gas Revenues (Details) - Customer concentration - Revenue Benchmark	12 Months Ended
	Dec. 31, 2021 Rate	Dec. 31, 2020 Rate	Dec. 31, 2019 Rate
Sunoco Logistics Partners L.P.
Concentration Risk [Line Items]
Concentration risk percent	16.00%	36.00%	33.00%
Shell Trading US Company
Concentration Risk [Line Items]
Concentration risk percent	13.00%	2.00%	2.00%
Occidental Energy Marketing Inc.
Concentration Risk [Line Items]
Concentration risk percent	10.00%	18.00%	20.00%
Plains Marketing L.P.
Concentration Risk [Line Items]
Concentration risk percent	9.00%	14.00%	13.00%