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Property, Plant and Equipment - Narrative (Details) $ in Millions |  | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | ---
Sep. 15, 2023 USD ($) | Sep. 15, 2023 CAD ($) | Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($) | Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Well costs |  |  | $ 43,038,000 | $ 193,405,000 | $ 43,038,000 | $ 193,405,000 | $ 49,118,000 | $ 171,860,000
Capitalized exploratory well costs charged to expense |  |  |  |  | 26,471,000 | 26,188,000 |  |
Well costs incurred and expensed |  |  |  |  | 31,800,000 | 70,300,000 |  |
Exploratory well costs capitalized more than one year |  |  | 22,500,000 |  | 22,500,000 |  |  |
Impairment of oil and gas properties |  |  | 0 | $ 0 | 34,528,000 | 0 |  |
Mexico |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Well costs incurred and expensed |  |  |  |  | 25,500,000 | $ 69,200,000 |  |
Vietnam |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Exploratory well costs capitalized more than one year |  |  | 15,100,000 |  | 15,100,000 |  |  |
Canada |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Exploratory well costs capitalized more than one year |  |  | 4,700,000 |  | 4,700,000 |  |  |
Proceeds from sales of property, plant and equipment |  | $ 139.0 |  |  |  |  |  |
Gain (loss) on sale of property plant equipment | $ 0 |  |  |  |  |  |  |
Brunei |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Exploratory well costs capitalized more than one year |  |  | $ 2,700,000 |  | $ 2,700,000 |  |  |

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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 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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