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This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

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- Definition

Exploration expenses (including prospecting) related to oil and gas producing entities and would be included in operating expenses of that entity. Costs incurred in identifying areas that may warrant examination and in examining specific areas that are considered to have prospects of containing oil and gas reserves, including costs of drilling exploratory wells and exploratory-type stratigraphic test wells. Exploration costs may be incurred both before acquiring the related property (sometimes referred to in part as prospecting costs) and after acquiring the property. Principal types of exploration costs, which include depreciation and applicable operating costs of support equipment and facilities and other costs of exploration activities, are: (i) Costs of topographical, geographical and geophysical studies, rights of access to properties to conduct those studies, and salaries and other expenses of geologists, geophysical crews, and others conducting those studies. Collectively, these are sometimes referred to as geological and geophysical or "G&G" costs. (ii) Costs of carrying and retaining undeveloped properties, such as delay rentals, ad valorem taxes on properties, legal costs for title defense, and the maintenance of land and lease records. (iii) Dry hole contributions and bottom hole contributions. (iv) Costs of drilling and equipping exploratory wells. (v) Costs of drilling exploratory-type stratigraphic test wells.

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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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- Definition

The expense recorded to reduce the value of oil and gas assets consisting of proved properties and unproved properties as the estimate of future successful production from these properties is reduced.

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Impairments - Narrative (Details) $ in Millions	3 Months Ended	12 Months Ended
Impairments - Narrative (Details) $ in Millions	Mar. 31, 2020 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($) facility	Dec. 31, 2020 USD ($)
Impaired Long-Lived Assets Held and Used [Line Items]
Exploration		$ 110	$ 136	$ 181
Long-lived assets held for use impairment		0	$ 30	49
Number of impaired assets \| facility			2
Goodwill impairment	$ 95	0	$ 0	95
Equity method investment, impairment		0	0	171
Permian
Impaired Long-Lived Assets Held and Used [Line Items]
Exploration			28
Long-lived assets held for use impairment			5
New Mexico
Impaired Long-Lived Assets Held and Used [Line Items]
Long-lived assets held for use impairment			5
Gulf Of Mexico
Impaired Long-Lived Assets Held and Used [Line Items]
Impairments			30
Unproved Property \| LOUISIANA
Impaired Long-Lived Assets Held and Used [Line Items]
Exploration		25	20	$ 78
Unproved Property \| Permian
Impaired Long-Lived Assets Held and Used [Line Items]
Exploration		$ 17	16
Central Facilities \| Eagle Ford
Impaired Long-Lived Assets Held and Used [Line Items]
Long-lived assets held for use impairment			24
Oil And Gas Lease \| Permian
Impaired Long-Lived Assets Held and Used [Line Items]
Exploration			16
Non-Producing Property \| Gulf Of Mexico
Impaired Long-Lived Assets Held and Used [Line Items]
Impairments			$ 30