Supplemental Oil and Gas Disclosures (Unaudited) (Cost Incurred in Oil and Gas Property Acquisition, Exploration, and Development Activities Disclosure) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) $ / Mcfe	Dec. 31, 2021 USD ($) $ / Mcfe	Dec. 31, 2020 USD ($) $ / Mcfe
Natural Gas and Oil Properties [Line Items]
Unproved property acquisition costs	$ 202	$ 139	$ 124
Exploration costs	0	0	0
Development costs	2,021	984	784
Capitalized costs incurred	$ 2,223	$ 1,123	$ 908
Full cost pool amortization (in dollars per mcfe) | $ / Mcfe	0.67	0.42	0.38
Montage Merger
Natural Gas and Oil Properties [Line Items]
Unproved property acquisition costs		$ 90