Share-Based Compensation - Compensation Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total RSU and PSU compensation	$ 81	$ 39	$ 26
Related income tax benefit	13	7	6
General and administrative expenses
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total RSU and PSU compensation	33	29	19
Natural gas and oil properties
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total RSU and PSU compensation	7	6	4
Production expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total RSU and PSU compensation	4	4	3
Separation and other termination costs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total RSU and PSU compensation	9	0	0
Other operating expense, net
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total RSU and PSU compensation	$ 28	$ 0	$ 0