| 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 |
|---|
| Revenue | 1,152.99 | 1,197.48 | 1,037.35 | 860.40 | 773.68 | 746.37 | 706.14 | 762.17 | 675.97 | 723.79 |
| Total Revenues | 1,152.99 | 1,197.48 | 1,037.35 | 860.40 | 773.68 | 746.37 | 706.14 | 762.17 | 675.97 | 723.79 |
| Cost of sales | 412.38 | 499.84 | 429.64 | 292.31 | 262.76 | 254.91 | 255.52 | 324.80 | 260.59 | 327.31 |
| Operations and maintenance | 294.66 | 273.77 | 224.67 | 204.23 | 180.13 | 178.19 | 156.70 | 165.25 | 149.97 | 157.52 |
| Depreciation and amortization | 137.90 | 125.58 | 116.71 | 113.53 | 103.68 | 91.50 | 85.16 | 85.58 | 82.29 | 80.92 |
| Taxes other than income taxes | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| General taxes | 48.67 | 46.25 | 41.03 | 38.63 | 35.08 | 32.39 | 32.17 | 32.01 | 30.54 | 30.28 |
| Revenue taxes | 48.34 | 48.67 | 41.83 | 34.74 | 30.29 | 30.33 | 30.08 | -- | -- | -- |
| Other operating expenses | (5.85) | (5.53) | (3.62) | (3.90) | (3.70) | (3.25) | (3.23) | -- | -- | -- |
| Impairment expense | -- | -- | -- | -- | -- | -- | -- | (192.48) | -- | -- |
| Environmental remediation | (14.05) | (12.90) | (12.39) | (9.94) | (9.69) | (12.34) | (11.13) | (15.29) | (13.30) | (3.51) |
| Total Operating Expenses | 961.85 | 1,012.53 | 869.88 | 697.28 | 625.33 | 602.90 | 573.98 | 815.40 | 536.69 | 599.54 |
| Operating income (loss) | 191.14 | 184.94 | 167.48 | 163.12 | 148.35 | 143.47 | 132.16 | (53.23) | 139.28 | 124.25 |
| Interest charges | 80.09 | 76.57 | 53.25 | 44.49 | 43.05 | 42.69 | 37.06 | 38.50 | 39.13 | 42.54 |
| Other income and expense - net | (1.11) | 17.86 | 1.20 | (12.56) | (13.94) | (22.84) | (3.60) | 5.35 | (0.54) | 7.75 |
| Income Before Income Taxes | 109.94 | 126.23 | 115.43 | 106.07 | 91.36 | 77.95 | 91.50 | (86.38) | 99.61 | 89.46 |
| Income tax expense | 31.07 | 32.36 | 29.13 | 27.41 | 21.08 | 12.64 | 24.19 | (30.76) | 40.71 | 35.75 |
| Net income (loss) from continuing operations | 78.87 | -- | 86.30 | 78.67 | 70.27 | 65.31 | 67.31 | -- | -- | -- |
| Income (Loss) from discontinued segment | -- | -- | -- | -- | 6.51 | (3.58) | (2.74) | -- | -- | -- |
| Consolidated Net Income (Loss) | 78.87 | 93.87 | 86.30 | 78.67 | 76.78 | 61.74 | 64.57 | -- | 58.90 | 53.70 |
| Redeemable preferred stock dividend requirements | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net Income (Loss) Available to Common Shareholders | 78.87 | 93.87 | 86.30 | 78.67 | 76.78 | 61.74 | 64.57 | (55.62) | 58.90 | 53.70 |
| Earnings per share (basic) - Continuing operations | -- | -- | 2.54 | 2.56 | 2.30 | 2.19 | 2.34 | -- | -- | -- |
| Earnings per share (basic) - Gain on sale of discontinued segment | -- | -- | -- | -- | 0.21 | -- | -- | -- | -- | -- |
| Earnings per share (basic) - Discontinued operations | -- | -- | -- | -- | -- | (0.12) | (0.10) | -- | -- | -- |
| NET EARNINGS PER SHARE (BASIC) | 2.03 | 2.59 | 2.54 | 2.56 | 2.51 | 2.07 | 2.24 | (1.94) | 2.13 | 1.96 |
| Earnings per share (diluted) - Continuing operations | -- | -- | 2.54 | 2.56 | 2.30 | 2.19 | 2.33 | -- | -- | -- |
| Earnings per share (diluted) - Gain on sale of discontinued segment | -- | -- | -- | -- | 0.21 | -- | -- | -- | -- | -- |
| Earnings per share (diluted) - Discontinued operations | -- | -- | -- | -- | -- | (0.12) | (0.09) | -- | -- | -- |
| NET EARNINGS PER SHARE (DILUTED) | 2.03 | 2.59 | 2.54 | 2.56 | 2.51 | 2.07 | 2.24 | (1.94) | 2.12 | 1.96 |
| Weighted Average Shares Outstanding (Basic) | 38.81 | 36.21 | 33.93 | 30.70 | 30.54 | 29.79 | 28.80 | 28.67 | 27.65 | 27.35 |
| Weighted Average Shares Outstanding (Diluted) | 38.87 | 36.27 | 33.98 | 30.75 | 30.60 | 29.86 | 28.87 | 28.67 | 27.78 | 27.42 |