| Fiscal period | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 |
|---|
| Period End Date | 12/31/2018 | 12/31/2017 | 12/31/2016 | 12/31/2015 | 12/31/2014 | 12/31/2013 | 12/31/2012 | 12/31/2011 | 12/31/2010 | 12/31/2009 |
|---|
| Retail revenues | 15,222.00 | 15,330.00 | 15,234.00 | 14,987.00 | 15,550.00 | 14,541.00 | 14,187.00 | 15,071.00 | 14,791.00 | 13,307.00 |
| Wholesale revenues | 2,516.00 | 2,426.00 | 1,926.00 | 1,798.00 | 2,184.00 | 1,855.00 | 1,675.00 | 1,905.00 | 1,994.00 | 1,802.00 |
| Natural Gas revenues | 3,854.00 | 3,791.00 | 1,596.00 | -- | -- | -- | -- | -- | -- | -- |
| Other electric revenues | 664.00 | 681.00 | 698.00 | 657.00 | 672.00 | 639.00 | 616.00 | 611.00 | 589.00 | 533.00 |
| Other revenues | 1,239.00 | 803.00 | 442.00 | 47.00 | 61.00 | 52.00 | 59.00 | 70.00 | 82.00 | 101.00 |
| Total Revenues | 23,495.00 | 23,031.00 | 19,896.00 | 17,489.00 | 18,467.00 | 17,087.00 | 16,537.00 | 17,657.00 | 17,456.00 | 15,743.00 |
| Cost of Other Sales | 806.00 | 513.00 | 260.00 | -- | -- | -- | -- | -- | -- | -- |
| Cost of Natural Gas | 1,539.00 | 1,601.00 | 613.00 | -- | -- | -- | -- | -- | -- | -- |
| Fuel | 4,637.00 | 4,400.00 | 4,361.00 | 4,750.00 | 6,005.00 | 5,510.00 | 5,057.00 | 6,262.00 | 6,699.00 | 5,952.00 |
| Purchased power | 971.00 | 863.00 | 750.00 | 645.00 | 672.00 | 461.00 | 544.00 | 608.00 | 563.00 | 474.00 |
| Other operations and maintenance | 5,889.00 | 5,739.00 | 5,382.00 | 4,416.00 | 4,354.00 | -- | 3,772.00 | 3,938.00 | 4,010.00 | 3,526.00 |
| Maintenance | -- | -- | -- | -- | -- | 3,846.00 | -- | -- | -- | -- |
| Depreciation and amortization | 3,131.00 | 3,010.00 | 2,502.00 | 2,034.00 | 1,945.00 | 1,901.00 | 1,787.00 | 1,717.00 | 1,513.00 | 1,503.00 |
| Taxes other than income taxes | 1,315.00 | 1,250.00 | 1,113.00 | 997.00 | 981.00 | 934.00 | 914.00 | 901.00 | 869.00 | 818.00 |
| Impairment charges | (210.00) | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| MC Asset Recovery litigation settlement | -- | -- | -- | -- | -- | -- | -- | -- | -- | (202.00) |
| Estimated Loss on Kemper IGCC | (1,097.00) | (3,362.00) | (428.00) | (365.00) | (868.00) | (1,180.00) | 0.00 | 0.00 | -- | -- |
| Gain on dispositions, net | 291.00 | 40.00 | (1.00) | -- | -- | -- | -- | -- | -- | -- |
| Total Operating Expenses | 19,304.00 | 20,698.00 | 15,410.00 | 13,207.00 | 14,825.00 | 13,832.00 | 12,074.00 | 13,426.00 | 13,654.00 | 12,475.00 |
| Operating income (loss) | 4,191.00 | 2,333.00 | 4,486.00 | 4,282.00 | 3,642.00 | 3,255.00 | 4,463.00 | 4,231.00 | 3,802.00 | 3,268.00 |
| Interest expense, net of amounts capitalized | 1,842.00 | 1,694.00 | 1,317.00 | 840.00 | 835.00 | 824.00 | 859.00 | 857.00 | 895.00 | 905.00 |
| Interest expense to affiliate trusts | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Impairment loss on equity method investments | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Preferred and preference dividends of subsidiaries | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Distributions on mandatorily redeemable preferred securities | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Earnings from equity method investments | 148.00 | 106.00 | 59.00 | -- | -- | -- | -- | -- | -- | -- |
| Equity in (losses) income of unconsolidated subsidiaries | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Interest income | -- | -- | -- | -- | -- | 19.00 | 40.00 | 21.00 | 24.00 | -- |
| Allowance for equity funds used during construction | 138.00 | 160.00 | 202.00 | 226.00 | 245.00 | 190.00 | 143.00 | 153.00 | 194.00 | 200.00 |
| Other income (expense), net | 114.00 | 163.00 | 50.00 | (39.00) | (44.00) | (81.00) | (38.00) | (61.00) | (59.00) | 41.00 |
| Leveraged lease income (losses) | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Total other income and (expense) | (1,442.00) | (1,265.00) | (1,006.00) | (653.00) | (634.00) | (696.00) | (714.00) | (744.00) | -- | (664.00) |
| Earnings Before Income Taxes | 2,749.00 | 1,068.00 | 3,480.00 | 3,629.00 | 3,008.00 | 2,559.00 | 3,749.00 | 3,487.00 | 3,066.00 | 2,604.00 |
| Provision for Income taxes | 449.00 | 142.00 | 951.00 | 1,194.00 | 977.00 | 849.00 | 1,334.00 | 1,219.00 | 1,026.00 | 896.00 |
| Federal- Current | -- | -- | -- | -- | -- | -- | 177.00 | 57.00 | 42.00 | 771.00 |
| Federal- Deferred | -- | -- | -- | -- | -- | -- | 1,011.00 | 1,035.00 | 898.00 | 40.00 |
| State- Current | -- | -- | -- | -- | -- | -- | 61.00 | 8.00 | (54.00) | 100.00 |
| State- Deferred | -- | -- | -- | -- | -- | -- | 85.00 | 119.00 | 140.00 | (15.00) |
| Earnings From Continuing Operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Earnings from discontinued operations, net of income taxes | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Earnings From Continuing Operations Before Cumulative Effect of Accounting Change | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Cumulative effect of accounting change- less income taxes | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Consolidated Net income | 2,300.00 | 926.00 | 2,529.00 | 2,435.00 | 2,031.00 | 1,710.00 | -- | -- | -- | -- |
| Net income attributable to noncontrolling interest | 58.00 | 46.00 | 36.00 | 14.00 | -- | 0.00 | -- | -- | -- | -- |
| Consolidated Net Income before Preferred Dividends & Other Preferred Stock Adjustments | -- | -- | -- | -- | -- | -- | 2,415.00 | 2,268.00 | 2,040.00 | 1,708.00 |
| Dividends on Preferred and Preference Stock of Subsidiaries | 16.00 | 38.00 | 45.00 | 54.00 | 68.00 | 66.00 | 65.00 | 65.00 | 65.00 | 65.00 |
| Consolidated Net Income After Dividends on Preferred and Preference Stock of Subsidiaries | 2,226.00 | 842.00 | 2,448.00 | 2,367.00 | 1,963.00 | 1,644.00 | 2,350.00 | 2,203.00 | 1,975.00 | 1,643.00 |
| Basic earnings per share from continuing operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Earnings per share (EPS)- Basic EPS | 2.18 | 0.84 | 2.57 | 2.60 | 2.19 | 1.88 | 2.70 | 2.57 | 2.37 | 2.07 |
| Diluted earnings per share from continuing operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Earnings per share (EPS)- Diluted EPS | 2.17 | 0.84 | 2.55 | 2.59 | 2.18 | 1.87 | 2.67 | 2.55 | 2.36 | 2.06 |
| Average basic number of shares of common stock outstanding | 1,020.00 | 1,000.00 | 951.00 | 910.00 | 897.00 | 877.00 | 871.00 | 857.00 | 832.00 | 795.00 |
| Average diluted number of shares of common stock outstanding | 1,025.00 | 1,008.00 | 958.00 | 914.00 | 901.00 | 881.00 | 879.00 | 864.00 | 837.00 | 796.00 |