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Supplemental Information on Oil and Gas Operations (Unaudited) (Proved Undeveloped Reserves) (Details)	12 Months Ended
	Dec. 31, 2022 MMBoe
Reserve Quantities [Line Items]
Proved undeveloped reserves (MMBoe) beginning balance	340
Proved undeveloped reserves, extensions and discoveries	176
Proved undeveloped reserves, revisions due to prices	2
Proved undeveloped reserves, revisions other than price	(39)
Proved undeveloped reserves, Purchase of reserves	44
Proved undeveloped reserves, conversion to proved developed reserves	(127)
Proved undeveloped reserves (MMBoe) ending balance	396

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- Definition

Proved undeveloped reserves, conversion to proved developed reserves (Energy).

+ References

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- Definition

Proved undeveloped reserves, extensions and discoveries (Energy)

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- Definition

Proved Undeveloped Reserves Purchases.

+ References

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- Definition

Proved undeveloped reserves, revisions due to prices (Energy).

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- Definition

Proved undeveloped reserves, revisions other than price (Energy)

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- Definition

Energy measure of proved undeveloped reserves of crude oil, including condensate and natural gas liquids, natural gas, synthetic oil and gas, or other nonrenewable natural resource that is intended to be upgraded into synthetic oil and gas.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Form 20-F
-Section Item 18
-Subsection Instruction 2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 235
-Section 50
-Paragraph 4
-URI https://asc.fasb.org/extlink&oid=126939881&loc=d3e61797-109447

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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.

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