| 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 |
|---|
| Operating Revenues | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Operating revenues-Utility operations | 7,990.00 | 7,466.00 | 8,243.00 | 7,288.00 | 6,845.00 | 6,638.00 | 6,670.00 | 6,434.00 | 6,497.00 | 6,238.00 |
| Operating revenues-Non-utility operations | 4,467.00 | 5,279.00 | 10,985.00 | 7,676.00 | 5,332.00 | 6,031.00 | 7,542.00 | 6,173.00 | 4,133.00 | 4,099.00 |
| Total revenues | 12,457.00 | 12,745.00 | 19,228.00 | 14,964.00 | 12,177.00 | 12,669.00 | 14,212.00 | 12,607.00 | 10,630.00 | 10,337.00 |
| Fuel, purchased power and gas | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Fuel, purchased power, and gas - non-utility | 3,879.00 | 4,413.00 | 10,655.00 | 7,304.00 | 4,141.00 | 5,053.00 | 6,630.00 | 5,283.00 | 3,562.00 | 3,481.00 |
| Fuel, purchased power, and gas - utility | 1,978.00 | 1,845.00 | 2,505.00 | 1,904.00 | 1,719.00 | 1,798.00 | 1,981.00 | 1,881.00 | 1,968.00 | 2,081.00 |
| Operation and maintenance | 2,262.00 | 2,160.00 | 2,400.00 | 2,420.00 | 2,443.00 | 2,419.00 | 2,451.00 | 2,335.00 | 2,302.00 | 2,214.00 |
| Depreciation, depletion and amortization | 1,732.00 | 1,606.00 | 1,468.00 | 1,377.00 | 1,443.00 | 1,263.00 | 1,124.00 | 1,030.00 | 976.00 | 852.00 |
| Taxes other than income | 487.00 | 462.00 | 457.00 | 431.00 | 410.00 | 414.00 | 405.00 | 391.00 | 370.00 | 364.00 |
| Merger and restructuring charges | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Asset (gains) and losses, reserves and impairments, net | (28.00) | (16.00) | 5.00 | (33.00) | (35.00) | (15.00) | (27.00) | (41.00) | (7.00) | (106.00) |
| Gain on sale of non-utility business | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Total Operating Expenses | 10,366.00 | 10,502.00 | 17,480.00 | 13,469.00 | 10,191.00 | 10,962.00 | 12,618.00 | 10,961.00 | 9,185.00 | 9,098.00 |
| Operating income (loss) | 2,091.00 | 2,243.00 | 1,748.00 | 1,495.00 | 1,986.00 | 1,707.00 | 1,594.00 | 1,646.00 | 1,445.00 | 1,239.00 |
| Interest expense | 951.00 | 791.00 | 675.00 | 630.00 | 720.00 | 641.00 | 559.00 | 536.00 | 472.00 | 450.00 |
| Preferred stock dividends of subsidiaries | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Interest income | 136.00 | 57.00 | 46.00 | 22.00 | 38.00 | 17.00 | 12.00 | 12.00 | 20.00 | 13.00 |
| Other income | 167.00 | 102.00 | 58.00 | 254.00 | 388.00 | 350.00 | 333.00 | 268.00 | 207.00 | 209.00 |
| Other expenses | (73.00) | (36.00) | (66.00) | (75.00) | (104.00) | (70.00) | (127.00) | (103.00) | (95.00) | (61.00) |
| Other - net | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Minority interest | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Non-operating retirement benefits, net | -- | (9.00) | 1.00 | (17.00) | (50.00) | (39.00) | (37.00) | -- | -- | -- |
| Gain / loss on extinguishment of debt | -- | -- | -- | (393.00) | -- | -- | -- | -- | -- | -- |
| Total Other (Income) and Deductions | 721.00 | 677.00 | 636.00 | 839.00 | -- | -- | 378.00 | 359.00 | 340.00 | 289.00 |
| Income (Loss) Before Income Taxes and Minority Interest | 1,370.00 | 1,566.00 | 1,112.00 | 656.00 | 1,538.00 | 1,324.00 | 1,216.00 | 1,287.00 | 1,105.00 | 950.00 |
| Provision for Income Taxes - Total | (34.00) | 169.00 | 29.00 | (130.00) | 167.00 | 152.00 | 98.00 | 175.00 | 271.00 | 230.00 |
| Minority Interest | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Income (Loss) from Continuing Operations | -- | 1,397.00 | 1,083.00 | 786.00 | -- | -- | -- | -- | -- | -- |
| Income (Loss) from Discontinued Operations, net of tax | -- | -- | -- | 117.00 | -- | -- | -- | -- | -- | -- |
| Cumulative Effect of Accounting Changes, net of tax | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Consolidated Net Income (Loss) | 1,404.00 | 1,397.00 | 1,083.00 | 903.00 | 1,371.00 | 1,172.00 | 1,118.00 | 1,112.00 | 834.00 | 720.00 |
| Net income attributable to noncontrolling interests | -- | -- | -- | -- | 3.00 | 3.00 | (2.00) | (22.00) | (34.00) | (7.00) |
| Less Continuing Operations- Net Income (Loss) Attributable to Noncontrolling Interests | -- | -- | -- | (10.00) | -- | -- | -- | -- | -- | -- |
| Less Discontinued Operations- Net Income (Loss) Attributable to Noncontrolling Interests | -- | -- | -- | 6.00 | -- | -- | -- | -- | -- | -- |
| Net income | 1,404.00 | 1,397.00 | 1,083.00 | 907.00 | 1,368.00 | 1,169.00 | 1,120.00 | 1,134.00 | 868.00 | 727.00 |
| Income (loss)from continuing operations | -- | 6.77 | 5.53 | 4.11 | -- | -- | -- | -- | -- | -- |
| EPS (Basic) : Discontinued operations | -- | -- | -- | 0.57 | -- | -- | -- | -- | -- | -- |
| Cumulative effect of accounting changes | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Basic Earnings per Common Share | 6.78 | 6.77 | 5.53 | 4.68 | 7.09 | 6.32 | 6.18 | 6.32 | 4.84 | 4.05 |
| Income (loss) from continuing operations | -- | 6.76 | 5.52 | 4.10 | -- | -- | -- | -- | -- | -- |
| EPS (Diluted) : Discontinued operations | -- | -- | -- | 0.57 | -- | -- | -- | -- | -- | -- |
| Cumulative effect of accounting changes | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Diluted Earnings per Common Share | 6.77 | 6.76 | 5.52 | 4.67 | 7.08 | 6.31 | 6.17 | 6.32 | 4.83 | 4.05 |
| Average Common Shares Basic | 207.00 | 206.00 | 195.00 | 193.00 | 193.00 | 185.00 | 181.00 | 179.00 | 179.00 | 179.00 |
| Average Common Shares Diluted | 207.00 | 206.00 | 196.00 | 194.00 | 193.00 | 185.00 | 181.00 | 179.00 | 179.00 | 179.00 |