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v3.20.2

Business Segments (Segment Information) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2019
Segment Reporting Information [Line Items] |  |  |  |  |
Total Assets | $ 10,469,351 |  | $ 10,469,351 |  | $ 11,718,504
External Revenues | 421,865 | $ 817,077 | 1,637,135 | $ 2,191,573 |
Income (Loss) | (266,608) | 1,111,702 | (1,099,710) | 1,307,713 |
Assets/revenue/income (loss) from continuing operations |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total Assets | 10,449,700 |  | 10,449,700 |  |
External Revenues | 421,900 | 817,100 | 1,637,100 | 2,191,600 |
Income (Loss) | (265,800) | 158,300 | (1,092,800) | 280,100 |
Discontinued operations, net of tax |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total Assets | 19,700 |  | 19,700 |  |
External Revenues | 0 | 0 | 0 | 0 |
Income (Loss) | (800) | 953,400 | (6,900) | 1,027,600 |
Corporate |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total Assets | 1,002,100 |  | 1,002,100 |  |
External Revenues | (5,200) | 63,400 | 319,500 | 125,600 |
Income (Loss) | (72,900) | 300 | 26,900 | (97,000) |
Exploration and production | Operating Segments |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total Assets | 9,447,600 |  | 9,447,600 |  |
External Revenues | 427,100 | 753,700 | 1,317,600 | 2,066,000 |
Income (Loss) | (192,900) | 158,000 | (1,119,700) | 377,100 |
Exploration and production | Operating Segments | United States |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total Assets | 7,028,000 |  | 7,028,000 |  |
External Revenues | 330,800 | 656,800 | 1,070,600 | 1,734,300 |
Income (Loss) | (172,600) | 170,800 | (1,011,700) | 420,000 |
Exploration and production | Operating Segments | Canada |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total Assets | 2,155,500 |  | 2,155,500 |  |
External Revenues | 96,300 | 95,000 | 245,200 | 323,800 |
Income (Loss) | (8,600) | (9,100) | (35,000) | (7,500) |
Exploration and production | Operating Segments | Other |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total Assets | 264,100 |  | 264,100 |  |
External Revenues | 0 | 1,900 | 1,800 | 7,900 |
Income (Loss) | $ (11,700) | $ (3,700) | $ (73,000) | $ (35,400) |

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