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Asset Retirement Obligations (Details) - USD ($) $ in Millions | 1 Months Ended | 11 Months Ended | 12 Months Ended
--- | --- | --- | ---
Feb. 09, 2021 | Dec. 31, 2021 | Dec. 31, 2022
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] |  |  |
Asset retirement obligations, beginning of period | $ 144 | $ 241 | $ 360
Additions | 0 | 48 | 53
Revisions | 0 | 63 | 16
Settlements and disposals | (1) | (3) | (54)
Held for sale | 0 | 0 | (57)
Accretion expense | 1 | 11 | 17
Impact of fresh start accounting | 97 | 0 | 0
Asset retirement obligations, end of period | 241 | 360 | 335
Asset Retirement Obligation | 241 | 360 | 335
Less current portion | 5 | 11 | 12
Asset retirement obligations, long-term | 236 | 349 | 323
Business Acquisition [Line Items] |  |  |
Additions | 0 | 48 | 53
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Disposals | 1 | 3 | 54
Held for sale | $ 0 | 0 | 57
Powder River Basin |  |  |
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] |  |  |
Settlements and disposals |  |  | (47)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Disposals |  |  | 47
Eagle Ford |  |  |
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] |  |  |
Held for sale |  |  | (57)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Held for sale |  |  | 57
Marcellus |  |  |
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] |  |  |
Additions |  |  | 27
Business Acquisition [Line Items] |  |  |
Additions |  |  | $ 27
Vine Energy Corporation (Vine) |  |  |
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] |  |  |
Additions |  | 44 |
Business Acquisition [Line Items] |  |  |
Additions |  | $ 44 |

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- Definition The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 25 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=116646717&loc=d3e6290-110844 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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- Definition Amount of accretion expense recognized during the period that is associated with an asset retirement obligation. Accretion expense measures and incorporates changes due to the passage of time into the carrying amount of the liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6392676&loc=d3e7480-110848 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c)(3) -URI https://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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- Definition Current portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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- Definition Amount of asset retirement obligations incurred during the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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- Definition Amount of asset retirement obligations settled, or otherwise disposed of, during the period. This may include asset retirement obligations transferred to third parties associated with the sale of a long-lived asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c)(2) -URI https://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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- Definition Amount of increase (decrease) in the asset retirement obligation from changes in the amount or timing of the estimated cash flows associated with the settlement of the obligation. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c)(4) -URI https://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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