Organization and Summary of Significant Accounting Policies (Schedule of Supplemental Disclosures of Cash Flow Information) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Cash paid during the year for interest, net of amounts capitalized	$ 106	$ 75	$ 58
Cash paid (received) during the year for income taxes	0	(32)	(52)
Non-cash investing activities	3,690	1,084	41
Non-cash financing activities	2,051	213	$ 0
Indigo Natural Resources, LLC
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Non-cash investing activities	3,039
GEPH Merger
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Non-cash investing activities	$ 575
Montage Resources Corporation
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Non-cash investing activities		$ 1,097