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Suspended Wells and Exploration Expenses - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Before-tax impairment related to the associated carrying value of capitalized undeveloped leasehold costs		$ 564	$ 344	$ 1,457
Canada
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Before-tax impairment related to the associated carrying value of capitalized undeveloped leasehold costs	$ 129
Europe, Middle East and North Africa
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Before-tax impairment related to the associated carrying value of capitalized undeveloped leasehold costs		$ 102
Alaska
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Before-tax impairment related to the associated carrying value of capitalized undeveloped leasehold costs				828
Asia Pacific
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Before-tax impairment related to the associated carrying value of capitalized undeveloped leasehold costs				50
Other International
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Before-tax impairment related to the associated carrying value of capitalized undeveloped leasehold costs				$ 84

X

- 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 235
-Section 50
-Paragraph 23
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=126939881&loc=d3e62136-109447

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+ References

No definition available.

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