Income Taxes - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
State tax effected net operating losses
Valuation allowance on operating loss carryforwards	$ 8
Unrecognized tax benefits	20	$ 13	$ 7	$ 6
Liability for accrued interest	2
Capital loss carryforward
State tax effected net operating losses
Other credit carryforwards	71
Tax credit carryforwards net of valuations	6
Marginal Well Credits
State tax effected net operating losses
Other credit carryforwards	4
Tax credit carryforwards valuation allowance	4
Research and development tax credits
State tax effected net operating losses
Unrecognized tax benefits	4
Federal
State tax effected net operating losses
Net operating loss carryforwards	383
NOL subject to expiration	318
NOL not subject to expiration	65
NOL net of valuations	345
Valuation allowance on operating loss carryforwards	38
State
State tax effected net operating losses
Net operating loss carryforwards	2,700
NOL net of valuations	151
Valuation allowance on operating loss carryforwards	87
State | Capital loss carryforward
State tax effected net operating losses
Tax credit carryforwards valuation allowance	15
Cimarex | Research and development tax credits
State tax effected net operating losses
Unrecognized tax benefits	$ 3