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Suspended Wells and Exploration Expenses - Aging of Suspended Well Cost (Details) $ in Millions | Dec. 31, 2025 USD ($) project | Dec. 31, 2024 USD ($) project | Dec. 31, 2023 USD ($) project | Dec. 31, 2022 USD ($)
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Extractive Industries [Abstract] |  |  |  |
Exploratory well costs capitalized for a period of one year or less | $ 110 | $ 33 | $ 0 |
Exploratory well costs capitalized for a period greater than one year | 133 | 163 | 184 |
Capitalized cost of suspended wells | $ 243 | $ 196 | $ 184 | $ 527
Number of projects with exploratory well costs capitalized for a period greater than one year | project | 13 | 13 | 14 |

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- Definition The amount of capitalized exploratory well costs that is pending the determination of proved reserves. This does not include amounts that were capitalized and subsequently expensed in the same annual period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 932 -SubTopic 235 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477215/932-235-50-1B + Details
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- Definition Amount of exploratory well cost capitalized for period of greater than one year after completion of drilling in oil- and gas-producing activities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 932 -SubTopic 235 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477215/932-235-50-1B + Details
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- Definition Amount of exploratory well cost capitalized for period of one year or less after completion of drilling in oil- and gas-producing activities. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 932 -SubTopic 235 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477215/932-235-50-1B + Details
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- Definition Number of projects for exploratory well cost capitalized for period of greater than one year after completion of drilling in oil- and gas-producing activities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 932 -SubTopic 235 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477215/932-235-50-1B + Details
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