Revenue Recognition (Disaggregation of Revenue on Geographic Basis) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Total operating revenues	$ 15,002	$ 6,667	$ 2,308
Exploration and Production
Disaggregation of Revenue [Line Items]
Total operating revenues	10,583	4,701	1,391
Exploration and Production | Operating Segments
Disaggregation of Revenue [Line Items]
Total operating revenues	10,577	4,640	1,348
Appalachia | Exploration and Production | Operating Segments
Disaggregation of Revenue [Line Items]
Total operating revenues	6,314	3,955	1,348
Haynesville | Exploration and Production | Operating Segments
Disaggregation of Revenue [Line Items]
Total operating revenues	4,263	682	0
Other | Exploration and Production | Operating Segments
Disaggregation of Revenue [Line Items]
Total operating revenues	$ 0	$ 3	$ 0