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v3.20.4

Fresh Start Accounting - Property, Plant, and Equipment (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Nov. 19, 2020 | Nov. 18, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | --- | --- | ---
Fresh-Start Adjustment [Line Items] |  |  |  |  |
Oil and gas properties | $ 810,328 | $ 795,247 | $ 9,256,532 | $ 9,463,038 |
Less: accumulated depreciation, depletion, amortization and impairment | (17,491) | 0 | (8,579,696) | (3,764,915) |
Other property and equipment | 935,950 | 938,172 | 1,311,240 | 1,279,653 |
Less: Accumulated depreciation and impairment | 5,088 |  |  | 163,896 |
Other property and equipment, net | 930,862 |  |  | 1,115,757 |
Total property, plant and equipment, net | $ 1,728,787 | 1,733,419 | $ 1,988,076 | $ 6,977,776 | $ 7,027,109
Fair Value |  |  |  |  |
Fresh-Start Adjustment [Line Items] |  |  |  |  |
Other property and equipment |  | 938,172 |  |  |
Less: Accumulated depreciation and impairment |  | 0 |  |  |
Other property and equipment, net |  | 938,172 |  |  |
Total property, plant and equipment, net |  | 1,733,419 |  |  |
Historical Book Value |  |  |  |  |
Fresh-Start Adjustment [Line Items] |  |  |  |  |
Oil and gas properties |  | 9,081,974 |  |  |
Other property and equipment |  | 1,311,240 |  |  |
Less: Accumulated depreciation and impairment |  | 320,362 |  |  |
Other property and equipment, net |  | 990,878 |  |  |
Total property, plant and equipment, net |  | 1,988,076 |  |  |
Proved Oil and Gas Properties | Fair Value |  |  |  |  |
Fresh-Start Adjustment [Line Items] |  |  |  |  |
Oil and gas properties |  | 755,247 |  |  |
Less: accumulated depreciation, depletion, amortization and impairment |  | 0 |  |  |
Total property, plant and equipment, net |  | 755,247 |  |  |
Proved Oil and Gas Properties | Historical Book Value |  |  |  |  |
Fresh-Start Adjustment [Line Items] |  |  |  |  |
Less: accumulated depreciation, depletion, amortization and impairment |  | (8,259,334) |  |  |
Total property, plant and equipment, net |  | 822,640 |  |  |
Unproved oil and gas properties | Fair Value |  |  |  |  |
Fresh-Start Adjustment [Line Items] |  |  |  |  |
Oil and gas properties |  | 40,000 |  |  |
Unproved oil and gas properties | Historical Book Value |  |  |  |  |
Fresh-Start Adjustment [Line Items] |  |  |  |  |
Oil and gas properties |  | $ 174,558 |  |  |

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