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Supplemental Oil and Gas Information (Unaudited) - Schedule of Results of Operations for Oil and Gas Producing Activities (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Revenues |  |  |
Revenues | $ 3,018,600 | $ 3,448,900 | $ 4,220,200
Other operating revenues | 6,000 | 7,900 | 26,700
Total revenues | 3,024,500 | 3,456,800 | 4,246,900
Costs and expenses |  |  |
Lease operating expenses | 937,000 | 784,400 | 679,300
Severance and ad valorem taxes | 39,200 | 42,800 | 57,000
Transportation, gathering and processing | 210,827 | 232,985 | 212,711
Costs of purchased natural gas | 3,147 | 51,682 | 171,991
Exploration costs charged to expense | 123,900 | 223,900 | 119,800
Undeveloped lease amortization | 9,600 | 10,900 | 13,300
Depreciation, depletion and amortization | 856,900 | 850,500 | 763,900
Accretion of asset retirement obligations | 52,400 | 46,000 | 46,200
Impairment of assets | 62,900 |  |
Selling and general expenses | 23,800 | 37,700 | 44,500
Other expenses (benefits) | 300 | 56,900 | 141,800
Total costs and expenses | 2,319,900 | 2,337,800 | 2,250,500
Results of operations before taxes | 704,600 | 1,119,000 | 1,996,400
Income tax expense (benefit) | 106,300 | 237,800 | 417,300
Results of operations | 598,400 | 881,200 | 1,579,100
Crude Oil and Natural Gas Liquids |  |  |
Revenues |  |  |
Revenues | 2,714,900 | 3,005,800 | 3,500,600
Natural Gas |  |  |
Revenues |  |  |
Revenues | 300,000 | 370,900 | 537,900
Sales of purchased natural gas |  |  |
Revenues |  |  |
Revenues | 3,700 | 72,200 | 181,700
United States - Offshore |  |  |
Revenues |  |  |
Revenues | 2,503,800 | 2,921,800 | 3,435,800
Other operating revenues | 4,500 | 6,500 | 25,400
Total revenues | 2,508,300 | 2,928,300 | 3,461,200
Costs and expenses |  |  |
Lease operating expenses | 749,900 | 630,700 | 522,700
Severance and ad valorem taxes | 37,800 | 41,400 | 55,700
Transportation, gathering and processing | 130,900 | 157,000 | 142,200
Costs of purchased natural gas | 0 | 0 | 200
Exploration costs charged to expense | 90,000 | 166,500 | 38,800
Undeveloped lease amortization | 6,200 | 8,100 | 8,700
Depreciation, depletion and amortization | 709,200 | 706,000 | 617,000
Accretion of asset retirement obligations | 43,100 | 37,800 | 36,500
Impairment of assets | 62,900 |  |
Selling and general expenses | (3,300) |  |
Selling and general expenses |  | 11,800 | 20,400
Other expenses (benefits) | (5,600) | 31,200 | 126,300
Total costs and expenses | 1,821,100 | 1,790,500 | 1,568,500
Results of operations before taxes | 687,200 | 1,137,800 | 1,892,700
Income tax expense (benefit) | 125,300 | 232,700 | 370,800
Results of operations | 561,900 | 905,100 | 1,521,900
United States - Offshore | Crude Oil and Natural Gas Liquids |  |  |
Revenues |  |  |
Revenues | 2,436,000 | 2,829,100 | 3,210,300
United States - Offshore | Natural Gas |  |  |
Revenues |  |  |
Revenues | 67,800 | 92,700 | 225,300
United States - Offshore | Sales of purchased natural gas |  |  |
Revenues |  |  |
Revenues | 0 | 0 | 200
Canada | Conventional gas |  |  |
Revenues |  |  |
Revenues | 508,200 | 516,100 | 761,600
Other operating revenues | 1,500 | 1,400 | 1,300
Total revenues | 509,700 | 517,500 | 762,900
Costs and expenses |  |  |
Lease operating expenses | 185,500 | 151,800 | 155,100
Severance and ad valorem taxes | 1,400 | 1,400 | 1,300
Transportation, gathering and processing | 79,900 | 76,000 | 70,500
Costs of purchased natural gas | 3,100 | 51,700 | 171,800
Exploration costs charged to expense | 400 | 400 | 800
Undeveloped lease amortization | 100 | 100 | 200
Depreciation, depletion and amortization | 146,000 | 142,200 | 141,500
Accretion of asset retirement obligations | 8,600 | 7,800 | 9,600
Impairment of assets | 0 |  |
Selling and general expenses | 20,400 | 16,500 | 21,900
Other expenses (benefits) | 3,300 | 16,800 | 12,400
Total costs and expenses | 448,700 | 464,700 | 585,100
Results of operations before taxes | 61,000 | 52,800 | 177,800
Income tax expense (benefit) | 12,000 | 11,200 | 43,600
Results of operations | 49,000 | 41,600 | 134,200
Canada | Crude Oil and Natural Gas Liquids | Conventional gas |  |  |
Revenues |  |  |
Revenues | 272,300 | 165,700 | 267,500
Canada | Natural Gas | Conventional gas |  |  |
Revenues |  |  |
Revenues | 232,200 | 278,200 | 312,600
Canada | Sales of purchased natural gas | Conventional gas |  |  |
Revenues |  |  |
Revenues | 3,700 | 72,200 | 181,500
Other |  |  |
Revenues |  |  |
Revenues | 6,600 | 11,000 | 22,800
Other operating revenues |  | 0 | 0
Total revenues | 6,600 | 11,000 | 22,800
Costs and expenses |  |  |
Lease operating expenses | 1,600 | 1,900 |
Lease operating expenses |  |  | 1,500
Severance and ad valorem taxes | 0 | 0 | 0
Transportation, gathering and processing | 0 | 0 | 0
Costs of purchased natural gas | 0 | 0 | 0
Exploration costs charged to expense | 33,500 | 57,000 | 80,200
Undeveloped lease amortization | 3,300 | 2,700 | 4,400
Depreciation, depletion and amortization | 1,700 | 2,300 | 5,400
Accretion of asset retirement obligations | 700 | 400 | 100
Impairment of assets | 0 |  |
Selling and general expenses | 6,700 | 9,400 | 2,200
Other expenses (benefits) | 2,600 | 8,900 | 3,100
Total costs and expenses | 50,100 | 82,600 | 96,900
Results of operations before taxes | (43,500) | (71,600) | (74,100)
Income tax expense (benefit) | (31,000) | (6,100) | 2,900
Results of operations | (12,500) | (65,500) | (77,000)
Other | Crude Oil and Natural Gas Liquids |  |  |
Revenues |  |  |
Revenues | 6,600 | 11,000 | 22,800
Other | Natural Gas |  |  |
Revenues |  |  |
Revenues | 0 | 0 | 0
Other | Sales of purchased natural gas |  |  |
Revenues |  |  |
Revenues | $ 0 | $ 0 | $ 0

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