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Supplementary Oil And Gas Information (Unaudited) - Oil and Natural Gas Liquids Narrative (Details) - MMBbls	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Reserve Quantities [Line Items]
Sales of reserves in place (in MMbbl)	1
Crude Oil, Synthetic Crude Oil, Bitumen, Natural Gas, Natural Gas Liquids
Reserve Quantities [Line Items]
Change in proved developed and undeveloped reserves, net (in MMbbl)	639	(383)	(860)
Extensions and discoveries (in MMbbl)	280	205	115
Improved recovery (in MMbbl)	75	56	33
Sales of reserves in place (in MMbbl)	1	0	0
Purchases of reserves in place (in MMbbl)	0	288	52
Production (in MMbbl)	298	274	309
Economic revisions due to prices (in MMbbl)	485	(792)	(1,118)
Revisions of prior estimates (in MMbbl)	98	134	368

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- Definition

Proved Developed And Undeveloped Reserves, Economic Revisions Due To Prices

+ References

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- Definition

Additions to proved reserves that result from (1) extension of the proved acreage of previously discovered (old) reservoirs through additional drilling in periods after discovery and (2) discovery of new fields with proved reserves or of new reservoirs of proved reserves in old fields.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Form 20-F
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- Definition

Changes in proved reserve estimates resulting from application of improved recovery techniques.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Volume increase (decrease) of proved reserves of oil and gas.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Publisher SEC

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- Definition

Production of proved reserves.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Purchase of minerals in place.

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Revisions represent changes in previous estimates of proved reserves, either upward or downward, resulting from new information (except for an increase in proved acreage) normally obtained from development drilling and production history or resulting from change in economic factors.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Sales of minerals in place.

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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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