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v3.22.2.2

Property, Plant and Equipment (Narrative) (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | ---
Aug. 31, 2022 | Jun. 30, 2022 | Sep. 30, 2022 | Sep. 30, 2021 | Mar. 31, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2021 | Dec. 31, 2020
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Well costs |  |  | $ 181,461,000 | $ 186,623,000 |  | $ 181,461,000 | $ 186,623,000 | $ 179,481,000 | $ 181,616,000
Exploratory well costs capitalized more than one year |  |  | 172,600,000 |  |  | 172,600,000 |  |  |
Impairment of oil and gas properties |  |  |  |  | $ 171,300,000 | 0 |  |  |
Impairment of assets |  |  | $ 0 | $ 0 |  | 0 | $ 171,296,000 |  |
Proceeds from sale of oil and gas property and equipment |  |  |  |  | $ 267,700,000 |  |  |  |
Discontinued Operations, Disposed of by Sale | Thunderhawk Field |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Percentage of ownership sold |  |  | 62.50% |  |  |  |  |  |
Cash received from divestiture |  |  | $ 20,000,000 |  |  | 20,000,000 |  |  |
Closing adjustment |  |  | 22,200,000 |  |  | 22,200,000 |  |  |
Net payment |  |  | 2,200,000 |  |  |  |  |  |
Gain on sale |  |  | 18,800,000 |  |  |  |  |  |
Discontinued Operations, Disposed of by Sale | Thunderhawk Field | Buyer |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Impairment of assets |  |  | 47,900,000 |  |  |  |  |  |
Discontinued Operations, Disposed of by Sale | CA-2 Asset |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Gain on sale |  |  | 0 |  |  |  |  |  |
Contingent consideration value |  |  | 8,700,000 |  |  | 8,700,000 |  |  |
Kodak field |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Percentage of field acquired |  | 11.00% |  |  |  |  |  |  |
Consideration transferred |  | $ 48,500,000 |  |  |  |  |  |  |
Lucius field |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Percentage of field acquired | 3.37% |  |  | 3.50% |  |  | 3.50% |  |
Consideration transferred | $ 77,100,000 |  |  | $ 22,500,000 |  |  |  |  |
Terra Nova |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Additional percentage acquired through commercial settlement |  |  |  |  |  |  |  | 7.525% |
Vietnam |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Exploratory well costs capitalized more than one year |  |  | 95,500,000 |  |  | 95,500,000 |  |  |
United States |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Exploratory well costs capitalized more than one year |  |  | 54,900,000 |  |  | 54,900,000 |  |  |
MEXICO |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Exploratory well costs capitalized more than one year |  |  | 15,500,000 |  |  | 15,500,000 |  |  |
Brunei |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Exploratory well costs capitalized more than one year |  |  | 2,800,000 |  |  | 2,800,000 |  |  |
Canada |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Exploratory well costs capitalized more than one year |  |  | $ 3,900,000 |  |  | $ 3,900,000 |  |  |

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