| 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 |
|---|
| Electric and gas trading | -- | -- | -- | -- | -- | 9,276.00 | 9,465.89 | 9,034.05 | 8,517.30 | 8,766.59 |
| Natural gas utility | 1,636.00 | 1,868.00 | 1,739.00 | 1,650.00 | 1,531.00 | 1,672.00 | 2,142.74 | 1,804.68 | 1,537.37 | 1,811.93 |
| Electric utility | 9,802.00 | 9,575.00 | 9,719.00 | 9,676.00 | 9,500.00 | -- | -- | -- | -- | -- |
| Nonregulated and other | 88.00 | 86.00 | 79.00 | 78.00 | 76.00 | 76.00 | 77.51 | 76.20 | 73.55 | 76.25 |
| Equity earnings from investments in affiliates | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Total Revenues | 11,526.00 | 11,529.00 | 11,537.00 | 11,404.00 | 11,107.00 | 11,024.00 | 11,686.13 | 10,914.92 | 10,128.22 | 10,654.77 |
| Cost of sales - nonregulated and other | 37.00 | 40.00 | 35.00 | 34.00 | 36.00 | 36.00 | 34.35 | 33.32 | 29.07 | 30.39 |
| Cost of natural gas sold and transported - utility | 689.00 | 918.00 | 843.00 | 823.00 | 733.00 | 905.00 | 1,372.48 | 1,082.75 | 880.94 | 1,163.89 |
| Electric fuel and purchased power - utility | 3,512.00 | 3,510.00 | 3,854.00 | 3,757.00 | 3,718.00 | 3,763.00 | 4,210.14 | 4,018.67 | 3,623.94 | 3,991.79 |
| Other operating and maintenance expenses - utility | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Other operating and maintenance expenses - nonregulated | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Electric and gas trading costs | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Other operating and maintenance expenses | 2,324.00 | 2,338.00 | 2,352.00 | 2,270.00 | 2,300.00 | 2,330.00 | 2,334.38 | 2,273.53 | 2,176.10 | 2,140.29 |
| Depreciation and amortization | 1,948.00 | 1,765.00 | 1,642.00 | 1,479.00 | 1,303.00 | 1,124.00 | 1,019.05 | 977.86 | 926.05 | 890.62 |
| Taxes (other than income taxes) | 612.00 | 569.00 | 556.00 | 545.00 | 532.00 | 512.00 | 465.84 | 420.50 | 408.92 | 374.82 |
| Special charges | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Conservation and demand-side management program expenses | (288.00) | (285.00) | (290.00) | (273.00) | (245.00) | (225.00) | (301.77) | (260.73) | (260.53) | (281.38) |
| Loss on Monticello life cycle management/extended power uprate project | -- | -- | -- | -- | -- | (129.00) | -- | 0.00 | -- | -- |
| Total Operating Expenses | 9,410.00 | 9,425.00 | 9,572.00 | 9,181.00 | 8,867.00 | 9,024.00 | 9,738.01 | 9,067.37 | 8,305.54 | 8,873.17 |
| Operating income (loss) | 2,116.00 | 2,104.00 | 1,965.00 | 2,223.00 | 2,240.00 | 2,000.00 | 1,948.13 | 1,847.56 | 1,822.68 | 1,781.60 |
| Interest charges | 840.00 | 773.00 | 700.00 | 663.00 | 647.00 | 595.00 | 566.61 | 575.20 | 601.55 | 591.30 |
| Interest and penalties related to COLI settlement | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Allowance for funds used during construction- debt | -- | -- | -- | -- | -- | -- | -- | (39.18) | (35.32) | (28.18) |
| Distributions on redeemable preferred securities of subsidiary trusts | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Equity earnings of unconsolidated subsidiaries | 40.00 | 39.00 | 35.00 | 30.00 | 42.00 | 34.00 | 30.15 | 30.02 | 29.97 | 30.53 |
| Allowance for funds used during construction- equity | 115.00 | 77.00 | 108.00 | 75.00 | 60.00 | 56.00 | 89.75 | 87.68 | 62.84 | 51.22 |
| Allowance for funds used during construction- debt | 42.00 | 37.00 | 48.00 | 35.00 | 27.00 | 26.00 | 38.40 | -- | -- | -- |
| Other non-operating income | (6.00) | 16.00 | (14.00) | (10.00) | -- | 6.00 | 5.30 | 2.97 | 6.18 | -- |
| Other non-operating expense | -- | -- | -- | -- | (18.00) | -- | -- | -- | -- | -- |
| Interest and other income, net | -- | -- | -- | -- | -- | -- | -- | -- | -- | 9.26 |
| Income from Continuing Operations Before Income Taxes | 1,467.00 | 1,500.00 | 1,442.00 | 1,690.00 | 1,704.00 | 1,527.00 | 1,545.12 | 1,432.21 | 1,355.43 | 1,309.49 |
| Provision for Income taxes | (6.00) | 128.00 | 181.00 | 542.00 | 581.00 | 543.00 | 523.82 | 483.98 | 450.20 | 468.32 |
| Current federal tax expense | (13.00) | (16.00) | (34.00) | 1.00 | (3.00) | (36.00) | (73.16) | (46.17) | 7.88 | 3.40 |
| Current state tax expense (benefit) | 2.00 | 4.00 | 8.00 | (11.00) | (4.00) | 2.00 | 9.23 | 7.68 | 31.48 | 9.97 |
| Current tax credits | -- | -- | -- | -- | -- | -- | -- | -- | (1.70) | (8.27) |
| Deferred federal tax expense | (89.00) | 55.00 | 122.00 | 460.00 | 477.00 | 480.00 | 505.24 | 439.09 | 366.41 | 383.93 |
| Deferred state tax expense | 91.00 | 83.00 | 85.00 | 107.00 | 112.00 | 92.00 | 84.79 | 80.91 | 50.74 | 78.77 |
| Deferred tax credits | -- | -- | -- | -- | -- | -- | -- | -- | 2.01 | -- |
| Deferred investment tax credits | (5.00) | (5.00) | (5.00) | (5.00) | (5.00) | -- | -- | -- | (6.61) | (6.19) |
| Current foreign tax expense | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Deferred foreign tax expense | -- | -- | -- | -- | -- | -- | -- | -- | -- | 6.71 |
| Current FIN48 tax expense | 18.00 | 2.00 | (6.00) | (83.00) | 6.00 | -- | -- | -- | -- | -- |
| Deferred FIN48 tax expense | (10.00) | 5.00 | 11.00 | 73.00 | (2.00) | -- | -- | -- | -- | -- |
| Minority Interest | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Income from continuing operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Income from discontinued operations - net of tax | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Income Before Extraordinary Income & Accounting Change | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Extraordinary items | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Consolidated Net Income (Loss) | -- | -- | -- | -- | 1,123.00 | -- | 1,021.31 | -- | 905.23 | 841.17 |
| Dividend requirements on preferred stock | -- | -- | -- | -- | -- | -- | -- | -- | -- | 3.53 |
| Premium on redemption of preferred stock | -- | -- | -- | -- | -- | -- | -- | -- | -- | 3.26 |
| Earnings available to common shareholders | 1,473.00 | 1,372.00 | 1,261.00 | 1,148.00 | 1,123.00 | 984.00 | 1,021.31 | 948.23 | 905.23 | 834.38 |
| Income from continuing operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Income (loss) from discontinued operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Extraordinary items | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Earnings per share - basic | 2.79 | 2.64 | 2.47 | 2.26 | 2.21 | 1.94 | 2.03 | 1.91 | 1.86 | 1.72 |
| Income from continuing operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Income (loss) from discontinued operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Extraordinary items | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Earnings per share - Diluted | 2.79 | 2.64 | 2.47 | 2.25 | 2.21 | 1.94 | 2.03 | 1.91 | 1.85 | 1.72 |
| Weighted Average Shares Outstanding (Basic) | 527.00 | 519.00 | 511.00 | 509.00 | 509.00 | 508.00 | 503.85 | 496.07 | 487.90 | 485.04 |
| Weighted Average Shares Outstanding (Diluted) | 528.00 | 520.00 | 511.00 | 509.00 | 509.00 | 508.00 | 504.12 | 496.53 | 488.43 | 485.62 |