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Suspended Wells and Exploration Expenses - Net Changes in Suspended Exploratory Well Costs (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Oil and Gas, Capitalized Exploratory Well Cost [Roll Forward] |  |  |
Beginning balance | $ 184 | $ 527 | $ 660
Additions pending the determination of proved reserves | 32 | 0 | 5
Reclassifications to proved properties | (2) | (285) | (7)
Charged to dry hole expense | (18) | (58) | (131)
Ending balance | $ 196 | $ 184 | $ 527

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- Definition Amount of addition to capitalized exploratory well cost pending determination of proved reserve 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 (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477215/932-235-50-1B + Details
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- Definition Amount of expense for capitalized exploratory well costs for which proved reserves were not found at the exploratory well. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 932 -SubTopic 235 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477215/932-235-50-1B + Details
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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 A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of reclassification of capitalized exploratory well cost to well, facility, and equipment based on determination of proved reserve 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 (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477215/932-235-50-1B + Details
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