| Fiscal period | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|
| Period End Date | 12/31/2024 | 12/31/2023 | 12/31/2022 | 12/31/2021 | 12/31/2020 | 12/31/2019 | 12/31/2018 | 12/31/2017 | 12/31/2016 | 12/31/2015 |
|---|
| Marketed gas system revenue | -- | -- | -- | -- | -- | -- | -- | -- | 0.00 | 9.49 |
| Oil, gas, and NGL production revenue | 2,671.29 | 2,363.89 | 3,345.91 | 2,597.92 | 1,126.19 | 1,585.75 | 1,636.36 | 1,253.78 | 1,178.43 | 1,499.91 |
| Other operating revenue | 18.97 | 10.00 | 12.74 | 24.98 | 0.39 | 3.49 | 3.80 | 6.62 | 1.95 | 4.54 |
| Realized hedge (loss) gain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Gain on divestiture activity | -- | -- | -- | -- | 0.09 | 0.86 | 426.92 | (131.03) | 37.07 | 43.03 |
| Other oil and gas revenue | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Derivative gain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Total operating revenues and other income | 2,690.26 | 2,373.89 | 3,358.65 | 2,622.89 | 1,126.67 | 1,590.11 | 2,067.07 | 1,129.38 | 1,217.45 | 1,556.97 |
| Oil, gas, and NGL production expense | 636.97 | 563.54 | 620.91 | 505.42 | 391.22 | 500.71 | 487.37 | 507.91 | 597.57 | 723.63 |
| Depletion, depreciation, amortization, and asset retirement obligation liability accretion | 809.31 | 690.48 | 603.78 | 774.39 | 784.99 | 823.80 | 665.31 | 557.04 | 790.75 | 921.01 |
| Impairment of goodwill | -- | -- | 7.47 | -- | -- | -- | -- | -- | -- | -- |
| General and administrative | 138.34 | 121.06 | 114.56 | 111.95 | 99.16 | 132.80 | 116.50 | 120.59 | 126.43 | 157.67 |
| Exploration | 64.12 | 59.48 | 54.94 | 39.30 | 41.00 | 51.50 | 55.17 | 56.18 | 65.64 | 120.57 |
| Other operating expense | (15.78) | (20.57) | (3.49) | (46.07) | (24.83) | (19.89) | (18.33) | (13.67) | (17.97) | (30.61) |
| Marketed gas system expense | -- | -- | -- | -- | -- | -- | -- | -- | 0.00 | (13.92) |
| Unrealized and realized derivative (gain) loss | 49.96 | 68.15 | (374.01) | (901.66) | 161.58 | (97.54) | 161.83 | (26.41) | (250.63) | 408.83 |
| Change in Net Profits Plan liability | -- | -- | -- | -- | -- | -- | -- | -- | 7.20 | 19.53 |
| Bad debt recovery | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Impairment of materials inventory | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Abandonment and impairment of unproved properties | -- | -- | -- | (35.00) | (1,016.01) | (33.84) | (49.89) | (12.27) | (80.37) | (78.64) |
| Impairment of proved properties | -- | -- | -- | -- | -- | -- | -- | (3.81) | (354.61) | (468.68) |
| Minority interest and other | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Impairment of other property and equipment | -- | -- | -- | -- | -- | -- | -- | 0.00 | 0.00 | (49.37) |
| Total Operating Expenses | 1,614.56 | 1,386.98 | 1,779.17 | 2,413.77 | 2,195.62 | 1,660.07 | 1,230.74 | 1,297.87 | 2,276.77 | 2,135.75 |
| Income (loss) from operations | 1,075.70 | 986.91 | 1,579.48 | 209.12 | (1,068.95) | (69.97) | 836.34 | (168.49) | (1,059.32) | (578.78) |
| Interest expense | 140.66 | 91.63 | 120.35 | 160.35 | 163.89 | 159.10 | 160.91 | 179.26 | 158.69 | 128.15 |
| Interest income | 31.90 | 19.85 | -- | -- | -- | -- | -- | -- | -- | -- |
| Other, net | (0.23) | (0.93) | 4.24 | (0.46) | (3.94) | (1.97) | 3.09 | 3.97 | 0.36 | 0.65 |
| Income (Loss) on extinguishment of debt | (0.48) | -- | (67.61) | (2.14) | 280.08 | -- | (26.74) | (0.04) | 15.72 | (16.58) |
| Income (loss) before income taxes | 966.22 | 914.20 | 1,395.77 | 46.17 | (956.71) | (231.04) | 651.78 | (343.81) | (1,201.92) | (722.86) |
| Income tax (expense) benefit | 195.93 | 96.32 | 283.82 | 9.94 | (192.09) | (44.04) | 143.37 | (182.97) | (444.17) | (275.15) |
| Income before cumulative effect of change in accounting principle | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Cumulative effect of change in accounting principle, net of income tax | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net Income (Loss) Available to Common Shareholders | 770.29 | 817.88 | 1,111.95 | 36.23 | (764.61) | (187.00) | 508.41 | (160.84) | (757.74) | (447.71) |
| Income from Continuing Operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Cumulative Effect of Change in Accounting Principle, Net of Income Tax | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Basic net income (loss) per common share | 6.71 | 6.89 | 9.09 | 0.30 | (6.72) | (1.66) | 4.54 | (1.44) | (9.90) | (6.61) |
| Income from Continuing Operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Cumulative Effect of Change in Accounting Principle, Net of Income Tax | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Diluted net income (loss) per common share | 6.67 | 6.86 | 8.96 | 0.29 | (6.72) | (1.66) | 4.48 | (1.44) | (9.90) | (6.61) |
| Basic weighted-average common shares outstanding | 114.76 | 118.68 | 122.35 | 119.04 | 113.73 | 112.54 | 111.91 | 111.43 | 76.57 | 67.72 |
| Diluted weighted-average common shares outstanding | 115.53 | 119.24 | 124.08 | 123.69 | 113.73 | 112.54 | 113.50 | 111.43 | 76.57 | 67.72 |