Revenue Recognition (Disaggregation of Revenue on Geographic Basis) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Total operating revenues	$ 4,541	$ 1,598	$ 11,622	$ 3,720
E&P
Disaggregation of Revenue [Line Items]
Total operating revenues	3,243	1,179	8,251	2,616
Operating Segments | E&P
Disaggregation of Revenue [Line Items]
Total operating revenues	3,247	1,165	8,250	2,574
Operating Segments | E&P | Appalachia
Disaggregation of Revenue [Line Items]
Total operating revenues	1,874	1,033	4,971	2,441
Operating Segments | E&P | Haynesville
Disaggregation of Revenue [Line Items]
Total operating revenues	1,373	132	3,279	132
Operating Segments | E&P | Other
Disaggregation of Revenue [Line Items]
Total operating revenues	$ 0	$ 0	$ 0	$ 1