REVENUE RECOGNITION - Disaggregation of Revenue on Geographic Basis (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Total operating revenues	$ 1,417	$ 2,118
E&P
Disaggregation of Revenue [Line Items]
Total operating revenues	838	1,439
Operating Segments | E&P
Disaggregation of Revenue [Line Items]
Total operating revenues	824	1,429
Operating Segments | E&P | Appalachia
Disaggregation of Revenue [Line Items]
Total operating revenues	554	923
Operating Segments | E&P | Haynesville
Disaggregation of Revenue [Line Items]
Total operating revenues	$ 270	$ 506