Supplemental Oil and Gas Disclosures (Unaudited) (Schedule of Analysis of Changes in Standardized Measure) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Increase (Decrease) in Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Roll Forward]
Standardized measure, beginning of year	$ 18,731	$ 1,847	$ 3,700
Sales and transfers of natural gas and oil produced, net of production costs	(8,611)	(3,332)	(478)
Net changes in prices and production costs	23,198	10,417	(2,720)
Extensions, discoveries, and other additions, net of future production and development costs	4,976	3,183	81
Acquisition of reserves in place	1	6,499	443
Sales of reserves in place	(49)	(1)	0
Revisions of previous quantity estimates	(400)	596	(987)
Net change in income taxes	(5,158)	(3,689)	35
Changes in estimated future development costs	(709)	137	1,241
Previously estimated development costs incurred during the year	1,208	419	624
Changes in production rates (timing) and other	2,159	2,470	(466)
Accretion of discount	2,242	185	374
Standardized measure, end of year	$ 37,588	$ 18,731	$ 1,847