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v3.20.2

Property, Plant and Equipment (Narrative) (Details) $ in Thousands | 1 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jul. 31, 2019 USD ($) business | Sep. 30, 2020 USD ($) | Dec. 31, 2019 USD ($) | Sep. 30, 2019 USD ($) | Dec. 31, 2018 USD ($)
Property, Plant and Equipment [Line Items] |  |  |  |  |
Well costs |  | $ 187,859 | $ 217,326 | $ 280,735 | $ 207,855
Exploratory well costs capitalized more than one year |  | 179,900 |  |  |
Impairment of oil and gas Properties |  | 1,206,284 |  |  |
Malaysia Subsidiaries |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Number of businesses divested (in businesses) | business | 2 |  |  |  |
Cash received from divestiture | $ 2,000,000 |  |  |  |
Gain (loss) on disposition of business | 960,000 |  |  |  |
Contingent bonus payment | $ 100,000 |  |  |  |
Vietnam |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Exploratory well costs capitalized more than one year |  | 88,200 |  |  |
United States |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Exploratory well costs capitalized more than one year |  | 46,000 |  |  |
Impairment of oil and gas Properties |  | 1,152,515 |  |  |
Brunei |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Exploratory well costs capitalized more than one year |  | 25,300 |  |  |
MEXICO |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Exploratory well costs capitalized more than one year |  | 15,600 |  |  |
Canada |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Exploratory well costs capitalized more than one year |  | $ 4,800 |  |  |

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