| 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 |
|---|
| Operating Revenues | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Revenues : Gas | 257.86 | 276.73 | 270.92 | 268.60 | 245.65 | 269.87 | 326.90 | 287.61 | 263.39 | 318.34 |
| Revenues : Electric | 940.82 | 981.18 | 921.09 | 1,037.05 | 1,011.60 | 944.43 | 877.97 | 865.24 | 805.55 | 797.56 |
| Revenues- Other | -- | -- | -- | -- | -- | -- | -- | 1.68 | 1.39 | 1.42 |
| Total revenues | 1,198.67 | 1,257.91 | 1,192.01 | 1,305.65 | 1,257.25 | 1,214.30 | 1,204.86 | 1,154.52 | 1,070.34 | 1,117.32 |
| Cost of sales | 306.19 | 318.02 | 272.88 | 410.35 | 400.97 | 372.86 | 482.59 | 479.55 | 395.43 | 494.56 |
| Gross profit | 892.48 | 939.89 | 919.13 | 895.30 | 856.27 | 841.44 | -- | 674.97 | 674.91 | 622.76 |
| Depreciation | 179.64 | 172.92 | 174.48 | 166.14 | 159.34 | 144.70 | 123.78 | 112.83 | 106.04 | 100.93 |
| Goodwill and other intangibles amortization | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Amortization of intangibles | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Operating, general and administrative | 297.12 | 318.23 | 307.12 | 294.80 | 293.86 | 297.48 | 305.89 | 285.57 | 269.97 | 267.16 |
| Property and other taxes | 179.52 | 171.89 | 171.26 | 162.61 | 148.10 | 133.44 | 114.59 | 105.54 | 97.67 | 89.12 |
| Restructuring charge | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Reorganization items | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Ammondson verdict | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Mountain States Transmission Intertie impairment | -- | -- | -- | -- | -- | -- | -- | -- | (24.04) | -- |
| Impairment on assets held for sale | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Total Operating Expenses | 962.47 | 981.06 | 925.74 | 1,033.90 | 1,002.27 | 948.48 | 1,026.85 | 983.49 | 893.16 | 951.77 |
| Operating income (loss) | 236.20 | 276.85 | 266.27 | 271.75 | 254.98 | 265.82 | 178.02 | 171.03 | 177.19 | 165.55 |
| Interest expense | 96.81 | 95.07 | 91.99 | 92.26 | 94.97 | 92.15 | 77.80 | 70.49 | 65.06 | 66.86 |
| Investment and other income | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Other Income | 4.85 | 0.41 | 3.97 | (3.42) | (3.48) | 7.58 | 10.20 | 7.74 | 4.37 | 3.93 |
| Loss on debt extinguishment | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Pre-Tax Income | 144.25 | 182.20 | 178.25 | 176.07 | 156.53 | 181.25 | 110.41 | 108.28 | 116.50 | 102.62 |
| Income tax (expense) benefit | (10.97) | (19.93) | (18.71) | 13.37 | (7.65) | 30.04 | (10.27) | 14.30 | 18.09 | 10.07 |
| Federal:Deferred | (4.01) | (15.17) | (15.59) | 17.38 | (2.05) | 33.03 | (5.66) | 18.15 | 13.20 | 18.62 |
| State : Current | 0.00 | 0.03 | 0.04 | 0.03 | 0.01 | (0.09) | 0.02 | 0.08 | (1.41) | (0.03) |
| State : Deferred | (3.57) | 1.31 | 2.40 | (5.02) | (6.13) | 0.86 | (3.95) | (3.71) | 1.32 | (7.94) |
| Federal: Investment tax credits | 0.00 | (0.01) | (0.03) | 0.17 | (0.20) | (0.23) | (0.27) | (0.34) | (0.38) | (0.42) |
| Federal:: Current | (3.40) | (6.08) | (5.53) | 0.81 | 0.72 | (3.53) | (0.41) | 0.11 | 5.36 | (0.16) |
| Federal: State | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Minority Interests in Net Loss of Consolidated Subsidiaries | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Income from continuing operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Discontinued Operations, Net of Taxes | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Consolidated Net Income (Loss) | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Minority Interests on Preferred Securities of Subsidiary Trusts | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Dividends and Redemption Premium on Preferred Stock | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net Income (Loss) available to limited partners shareholders | 155.22 | 202.12 | 196.96 | 162.70 | 164.17 | 151.21 | 120.69 | 93.98 | 98.41 | 92.56 |
| Earnings Per Share (Basic) - Cont Ops | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Earnings Per Share (Basic) - Disc Ops | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| NET EARNINGS PER SHARE (BASIC) | 3.07 | 4.01 | 3.94 | 3.35 | 3.40 | 3.20 | 3.01 | 2.46 | 2.67 | 2.55 |
| Earnings Per Share (Diluted) - Cont Ops | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Earnings Per Share (Diluted) - Disc Ops | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| NET EARNINGS PER SHARE (DILUTED) | 3.06 | 3.98 | 3.92 | 3.34 | 3.39 | 3.17 | 2.99 | 2.46 | 2.66 | 2.53 |
| Weighted Average Shares Outstanding (Basic) | 50.56 | 50.43 | 49.99 | 48.56 | 48.30 | 47.30 | 40.16 | 38.15 | 36.85 | 36.26 |
| Weighted Average Shares Outstanding (Diluted) | 50.70 | 50.75 | 50.24 | 48.66 | 48.48 | 47.64 | 40.16 | 38.15 | 36.85 | 36.55 |