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Segment Information - Industry Segment Results (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 USD ($) segment | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Segment Reporting [Abstract] |  |  |
Number of reportable segments | segment | 2 |  |
Segment Reporting Information [Line Items] |  |  |
Loss on Commodity Derivative Instruments | $ 1,928,652 | $ (2,663,775) | $ (1,632,733)
Other Revenue and Operating Income | 129,860 | 87,322 | 105,883
Total Revenue and Other Operating Income | 3,434,948 | 1,261,211 | 756,792
Total Operating Expense | 1,192,109 | 1,321,641 | 1,234,874
Earnings Before Income Tax | 2,222,925 | (211,947) | (636,513)
Segment Assets | 8,626,657 | 8,515,773 | 8,100,751
Depreciation, Depletion and Amortization | 433,586 | 461,215 | 515,118
Capital Expenditures | 679,404 | 565,754 | 465,861
Natural Gas, NGLs and Oil Revenue |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 1,302,218 | 3,652,112 | 2,183,929
Purchased Gas Revenue |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 74,218 | 185,552 | 99,713
Citadel Energy Marketing LLC |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 180,039 |  | 334,407
Total Revenue and Other Operating Income | $ 180,039 |  | $ 334,407
Citadel Energy Marketing LLC | Revenue from Contract with Customer Benchmark | Customer Concentration Risk |  |  |
Segment Reporting Information [Line Items] |  |  |
Percentage of revenue (more than) | 10.00% |  | 10.00%
Direct Energy Business Marketing LLC |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | $ 165,465 | 453,501 | $ 235,760
Total Revenue and Other Operating Income | $ 165,465 | $ 453,501 | $ 235,760
Direct Energy Business Marketing LLC | Revenue from Contract with Customer Benchmark | Customer Concentration Risk |  |  |
Segment Reporting Information [Line Items] |  |  |
Percentage of revenue (more than) | 10.00% | 10.00% | 10.00%
Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | $ 1,442,995 | $ 3,907,282 | $ 2,364,909
Investments in unconsolidated equity affiliates | 13,682 | 11,714 | 17,301
Reportable Subsegments | Exploration and Production | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Total Operating Expense |  |  | 312,970
Segment Assets |  |  | 981,405
Depreciation, Depletion and Amortization |  |  | 16,492
Capital Expenditures |  |  | 1,378
Reportable Subsegments | Exploration and Production | Operating Segments | Shale |  |  |
Segment Reporting Information [Line Items] |  |  |
Loss on Commodity Derivative Instruments | 151,408 | (1,672,974) | (492,526)
Other Revenue and Operating Income | 66,559 | 69,618 | 81,267
Total Revenue and Other Operating Income | 1,388,360 | 1,731,321 | 1,577,734
Total Operating Expense | 746,050 | 790,960 | 804,004
Earnings Before Income Tax | 642,310 | 940,361 | 773,730
Segment Assets | 6,656,655 | 6,452,075 | 6,071,495
Depreciation, Depletion and Amortization | 365,020 | 388,641 | 440,024
Capital Expenditures | 629,631 | 544,914 | 453,603
Reportable Subsegments | Exploration and Production | Operating Segments | Coalbed Methane |  |  |
Segment Reporting Information [Line Items] |  |  |
Loss on Commodity Derivative Instruments | 11,554 | (139,131) | (46,304)
Other Revenue and Operating Income | 0 | 0 | 0
Total Revenue and Other Operating Income | 142,317 | 175,564 | 147,274
Total Operating Expense | 141,708 | 131,426 | 117,900
Earnings Before Income Tax | 609 | 44,138 | 29,374
Segment Assets | 948,795 | 959,126 | 1,047,851
Depreciation, Depletion and Amortization | 50,052 | 53,201 | 58,602
Capital Expenditures | 36,804 | 15,043 | 10,880
Reportable Subsegments | Exploration and Production | Operating Segments | Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Loss on Commodity Derivative Instruments | 1,765,690 | (851,670) | (1,093,903)
Other Revenue and Operating Income | 63,301 | 17,704 | 24,616
Total Revenue and Other Operating Income | 1,904,271 | (645,674) | (968,216)
Total Operating Expense | 304,351 | 399,255 |
Earnings Before Income Tax | 1,580,006 | (1,196,446) | (1,439,617)
Segment Assets | 1,021,207 | 1,104,572 |
Depreciation, Depletion and Amortization | 18,514 | 19,373 |
Capital Expenditures | 12,969 | 5,797 |
Reportable Subsegments | Exploration and Production | Operating Segments | Shale and Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Equity in earnings (loss) of affiliates | 2,942 | 1,412 | 5,780
Reportable Subsegments | Exploration and Production | Operating Segments | Environmental Attributes |  |  |
Segment Reporting Information [Line Items] |  |  |
Other Revenue and Operating Income | 40,685 |  |
Reportable Subsegments | Exploration and Production | Operating Segments | Natural Gas, NGLs and Oil Revenue | Shale |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 1,170,393 | 3,334,677 | 1,988,993
Reportable Subsegments | Exploration and Production | Operating Segments | Natural Gas, NGLs and Oil Revenue | Coalbed Methane |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 130,763 | 314,695 | 193,578
Reportable Subsegments | Exploration and Production | Operating Segments | Natural Gas, NGLs and Oil Revenue | Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 1,062 | 2,740 | 1,358
Reportable Subsegments | Exploration and Production | Operating Segments | Purchased Gas Revenue | Shale |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 0 | 0 | 0
Reportable Subsegments | Exploration and Production | Operating Segments | Purchased Gas Revenue | Coalbed Methane |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 0 | 0 | 0
Reportable Subsegments | Exploration and Production | Operating Segments | Purchased Gas Revenue | Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | $ 74,218 | $ 185,552 | $ 99,713

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