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Exploration and evaluation of oil and gas reserves (Details 1) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Exploration costs recognized in the statement of income |  |  |
Geological and geophysical expenses | $ (566) | $ (342) | $ (358)
Exploration expenditures written off (includes dry wells and signature bonuses) | (421) | (691) | (248)
Contractual penalties on local content requirements | 12 | 165 | (47)
Other exploration expenses | (7) | (19) | (34)
Total expenses | (982) | (887) | (687)
Cash used in: |  |  |
Operating activities | 574 | 360 | 393
Investment activities | 671 | 1,253 | 555
Total cash used | $ 1,245 | $ 1,613 | $ 948

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- Definition The cash flows from (used in) the search for mineral resources, including minerals, oil, natural gas and similar non-regenerative resources after the entity has obtained legal rights to explore in a specific area, as well as the determination of the technical feasibility and commercial viability of extracting the mineral resource, classified as investing activities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 6 -IssueDate 2023-01-01 -Paragraph 24 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=6&code=ifrs-tx-2023-en-r&anchor=para_24_b&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The cash flows from (used in) the search for mineral resources, including minerals, oil, natural gas and similar non-regenerative resources after the entity has obtained legal rights to explore in a specific area, as well as the determination of the technical feasibility and commercial viability of extracting the mineral resource, classified as operating activities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 6 -IssueDate 2023-01-01 -Paragraph 24 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=6&code=ifrs-tx-2023-en-r&anchor=para_24_b&doctype=Standard -URIDate 2023-03-23 + Details
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