Derivative and Hedging Activities - Schedule of Estimated Fair Values of Our Natural Gas and Oil Derivative Instrument Assets (Liabilities) (Details) - Energy Related Derivative $ in Millions	6 Months Ended	12 Months Ended
Jun. 30, 2023 USD ($) Bcf MMBbls	Dec. 31, 2022 USD ($) Bcf MMBbls
Derivative [Line Items]
Fair Value	$ 440	$ (525)
Natural Gas
Derivative [Line Items]
Notional Volume \| Bcf	1,532	1,777
Fair Value	$ 440	$ (501)
Natural Gas \| Fixed-price swaps
Derivative [Line Items]
Notional Volume \| Bcf	357	382
Fair Value	$ (20)	$ (494)
Natural Gas \| Collars
Derivative [Line Items]
Notional Volume \| Bcf	637	721
Fair Value	$ 414	$ 49
Natural Gas \| Three-way collars
Derivative [Line Items]
Notional Volume \| Bcf	2	4
Fair Value	$ 1	$ (2)
Natural Gas \| Call options
Derivative [Line Items]
Notional Volume \| Bcf	0	18
Fair Value	$ 0	$ (22)
Natural Gas \| Basis protection swaps
Derivative [Line Items]
Notional Volume \| Bcf	536	652
Fair Value	$ 45	$ (32)
Oil
Derivative [Line Items]
Notional Volume \| MMBbls	0	9
Fair Value	$ 0	$ (24)
Oil \| Fixed-price swaps
Derivative [Line Items]
Notional Volume \| MMBbls	0	1
Fair Value	$ 0	$ (32)
Oil \| Collars
Derivative [Line Items]
Notional Volume \| MMBbls	0	2
Fair Value	$ 0	$ 7
Oil \| Basis protection swaps
Derivative [Line Items]
Notional Volume \| MMBbls	0	6
Fair Value	$ 0	$ 1

Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 5
-SubTopic 10
-Topic 815
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480463/815-10-45-5

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480237/815-40-50-5

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