Organization and Summary of Significant Accounting Policies (Capitalized Costs Relating to Oil and Gas Producing Activities Disclosure) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Proved properties	$ 33,546	$ 31,400
Unproved properties	2,217	2,231
Total capitalized costs	35,763	33,631
Less:  Accumulated depreciation, depletion and amortization	(25,033)	(23,884)
Net capitalized costs	$ 10,730	$ 9,747