Income Taxes - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
State tax effected net operating losses
Valuation allowance on operating loss carryforwards	$ 8
Unrecognized tax benefits	16	$ 20	$ 13	$ 7
Liability for accrued interest	4
Capital loss carryforward
State tax effected net operating losses
Other credit carryforwards	11
Marginal Well Credits
State tax effected net operating losses
Other credit carryforwards	4
Research and development tax credits
State tax effected net operating losses
Unrecognized tax benefits	3
Federal
State tax effected net operating losses
Net operating loss carryforwards	357
NOL subject to expiration	293
NOL not subject to expiration	65
NOL net of valuations	319
Valuation allowance on operating loss carryforwards	38
State
State tax effected net operating losses
Net operating loss carryforwards	2,600
NOL net of valuations	936
Valuation allowance on operating loss carryforwards	60
State | Capital loss carryforward
State tax effected net operating losses
Tax credit carryforwards valuation allowance	4
Cimarex | Research and development tax credits
State tax effected net operating losses
Unrecognized tax benefits	$ 7