| Fiscal period | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 |
|---|
| Period End Date | 12/31/2020 | 12/31/2019 | 12/31/2018 | 12/31/2017 | 12/31/2016 | 12/31/2015 | 12/31/2014 | 12/31/2013 | 12/31/2012 | 12/31/2011 |
|---|
| Services | 1,286.98 | 1,248.32 | 1,197.55 | 2,311.26 | 2,062.48 | 1,664.86 | 1,470.11 | 1,322.72 | 1,173.97 | -- |
| Operating revenues, excluding energy trading revenues | -- | -- | -- | -- | -- | -- | -- | -- | -- | 14,805.79 |
| Energy trading revenues, net | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Commodity sales | 7,255.26 | 8,916.05 | 11,395.64 | 9,862.65 | 6,858.46 | 6,098.34 | 10,724.98 | 10,549.16 | 9,010.15 | -- |
| Total revenues | 8,542.24 | 10,164.37 | 12,593.20 | 12,173.91 | 8,920.93 | 7,763.21 | 12,195.09 | 11,871.88 | 10,184.12 | 14,805.79 |
| Cost of gas | -- | -- | -- | 9,538.05 | -- | -- | -- | -- | -- | -- |
| Cost of sales and fuel | 5,110.15 | 6,788.04 | 9,422.71 | -- | 6,496.12 | 5,641.05 | 10,088.55 | 10,222.21 | 8,540.32 | 12,425.43 |
| Gross profit | 3,432.10 | 3,376.33 | 3,170.49 | -- | 2,424.81 | 2,122.15 | 2,106.54 | 1,649.67 | 1,643.80 | 2,380.36 |
| Operations and maintenance | 761.18 | 863.71 | 803.15 | 724.31 | 658.23 | 605.75 | 599.14 | 479.17 | 437.65 | 813.67 |
| Depreciation, depletion and amortization | 578.66 | 476.54 | 428.56 | 406.34 | 391.59 | 354.62 | 294.68 | 239.34 | 205.33 | 312.16 |
| Goodwill impairment | 607.20 | -- | -- | -- | -- | -- | -- | -- | -- | 0.00 |
| General taxes | 125.03 | 119.16 | 103.92 | 98.40 | 88.85 | 87.58 | 75.74 | 62.42 | 54.08 | 94.66 |
| Gain on sale of assets | 1.33 | (2.58) | 0.60 | 0.92 | 9.64 | 5.63 | 6.60 | 11.88 | 6.74 | (0.96) |
| Impairment of long-lived assets | -- | -- | -- | (15.97) | -- | (83.67) | -- | -- | -- | -- |
| Total Operating Expenses | -- | -- | -- | -- | -- | -- | -- | -- | 697.06 | 1,220.48 |
| Operating income (loss) | 1,361.36 | 1,914.35 | 1,835.46 | 1,391.77 | 1,295.78 | 996.16 | 1,143.57 | 880.62 | 953.48 | 1,158.91 |
| Interest expense | 712.89 | 491.77 | 469.62 | 485.66 | 469.65 | 416.79 | 356.16 | 270.65 | 237.64 | 297.01 |
| Impairment of equity investments | 37.73 | -- | -- | 4.27 | -- | 180.58 | 76.41 | -- | -- | -- |
| Equity earnings from investments | 143.24 | 154.54 | 158.38 | 159.28 | 139.69 | 125.30 | 117.42 | 110.52 | 123.02 | 127.25 |
| Allowance for equity funds used during construction | 23.66 | 64.82 | 7.96 | 0.11 | 0.21 | 2.18 | 14.94 | 30.52 | 13.65 | 2.34 |
| Other Income | 43.75 | 27.06 | 0.67 | 15.39 | 6.09 | 0.37 | 5.60 | 18.16 | 8.64 | 1.41 |
| Other expense | (19.07) | (18.00) | (14.93) | (35.81) | (14.16) | (4.76) | (29.07) | (14.00) | (2.65) | (9.34) |
| Minority interests in income of consolidated subsidiaries | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Pre-Tax Income | 802.32 | 1,650.99 | 1,517.94 | 1,040.80 | 957.96 | 521.88 | 819.87 | 755.17 | 858.51 | 983.56 |
| Provision for Income taxes | 189.51 | 372.41 | 362.90 | 447.28 | 212.41 | 136.60 | 151.16 | 166.08 | 180.76 | 226.05 |
| Current income taxes : Federal | 0.98 | (1.28) | 0.26 | (0.30) | 6.09 | 13.19 | 10.18 | (9.53) | 41.25 | (32.29) |
| Current income taxes : State | 1.80 | 0.96 | 1.63 | (1.67) | 2.45 | 2.97 | 3.31 | 1.81 | 1.80 | 1.71 |
| Deferred income taxes : Federal | 154.07 | 327.81 | 319.55 | (376.73) | 193.97 | 116.68 | 152.35 | 156.82 | 134.21 | 228.26 |
| Deferred income taxes : State | 32.66 | 44.92 | 41.46 | (68.59) | 9.90 | 3.76 | (14.69) | 16.98 | 3.51 | 28.38 |
| Income from continuing operations | -- | -- | -- | -- | 745.55 | 385.28 | 668.72 | 589.09 | 677.75 | 757.51 |
| Gain on sale of discontinued component, net of tax | -- | -- | -- | -- | (2.05) | -- | -- | -- | 13.52 | -- |
| Income (loss) from operations of discontinued components, net of tax | -- | -- | -- | -- | -- | (6.08) | (5.61) | (12.13) | 52.27 | 2.23 |
| Cumulative Effect of Changes in Accounting Principle | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Consolidated Net Income (Loss) | 612.81 | 1,278.58 | 1,155.03 | 593.52 | 743.50 | 379.20 | 663.11 | 576.96 | 743.53 | 759.74 |
| Net Loss (income) attributable to noncontrolling interests | 0.00 | 0.00 | 3.33 | 205.68 | 391.46 | 134.22 | 349.00 | 310.43 | 382.91 | 399.15 |
| Preferred stock dividends | 1.10 | 1.10 | 1.10 | 0.77 | -- | -- | -- | -- | -- | -- |
| Income available for common stock | 611.71 | 1,277.48 | 1,150.60 | 387.07 | 352.04 | 244.98 | 314.11 | 266.53 | 360.62 | 360.59 |
| Earnings per share from continuing operations (Basic) | -- | -- | -- | -- | 1.68 | 1.19 | 1.53 | 1.35 | 1.43 | 1.71 |
| Earnings (loss) per share from operations of discontinued components, net | -- | -- | -- | -- | -- | (0.02) | (0.03) | (0.06) | 0.32 | 0.01 |
| Earnings per share from gain on sale of discontinued component, net | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Earnings per share from cumulative effect of changes in accounting principles | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| NET EARNINGS PER SHARE (BASIC) | 1.42 | 3.09 | 2.80 | 1.30 | 1.67 | 1.17 | 1.50 | 1.29 | 1.75 | 1.72 |
| Earnings per share from continuing operations (Diluted) | -- | -- | -- | -- | 1.67 | 1.19 | 1.52 | 1.33 | 1.40 | 1.67 |
| Earnings (loss) per share from operations of discontinued components, net | -- | -- | -- | -- | -- | (0.03) | (0.03) | (0.06) | 0.31 | 0.01 |
| Earnings per share from gain on sale of discontinued component, net | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Earnings per share from cumulative effect of changes in accounting principles | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| NET EARNINGS PER SHARE (DILUTED) | 1.42 | 3.07 | 2.78 | 1.29 | 1.66 | 1.16 | 1.49 | 1.27 | 1.71 | 1.68 |
| Weighted Average Shares Outstanding (Basic) | 431.11 | 413.56 | 411.49 | 297.48 | 211.13 | 210.21 | 209.39 | 206.04 | 206.14 | 209.34 |
| Weighted Average Shares Outstanding (Diluted) | 431.78 | 415.44 | 414.20 | 299.78 | 212.38 | 210.54 | 210.43 | 209.70 | 210.71 | 214.50 |