Share-Based Compensation - Compensation Expense (Details) - USD ($) $ in Millions	1 Months Ended	11 Months Ended	12 Months Ended
Feb. 09, 2021	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total RSU, stock option and PSU compensation	$ 3	$ 11	$ 26	$ 22
Related income tax benefit	0	0	6	0
General and administrative expenses
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total RSU, stock option and PSU compensation	3	7	19	20
Natural gas and oil properties
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total RSU, stock option and PSU compensation	0	2	4	1
Production expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total RSU, stock option and PSU compensation	$ 0	$ 2	$ 3	$ 1

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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