7Baggers

WEC Energy Group, Inc
(NYSE:WEC) 

WEC stock logo

WEC Energy Group, Inc., through its subsidiaries, provides regulated natural gas and electricity, and renewable and nonregulated renewable energy services in the United States. The company operates through six segments: Wisconsin, Illinois, Other States, Electric Transmission, Non-Utility Energy Inf...

Founded: 1981
Full Time Employees: 7,500
Sector: Utilities
Industry: Utilities-Regulated Electric

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Quarterly
Annual
    Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2004-12-31 
                                                                  
      operating revenues
    3,434,200,000 2,537,100,000 2,104,000,000 2,009,500,000 3,149,500,000 2,284,200,000 1,863,500,000 1,772,000,000 2,680,200,000 2,217,500,000 1,957,400,000 1,830,000,000 2,888,100,000 2,558,400,000 2,003,000,000 2,127,900,000 2,908,100,000 2,201,900,000 1,746,500,000 1,676,200,000 2,691,400,000 1,933,400,000 1,651,000,000 1,548,700,000 2,108,600,000 1,947,500,000 1,608,000,000 1,590,200,000 2,377,400,000 2,076,800,000 1,643,700,000 1,672,500,000 2,286,500,000 2,055,000,000 1,657,500,000 1,631,500,000 2,304,500,000 1,963,000,000 1,712,500,000 1,602,000,000 2,194,800,000 1,848,300,000 1,698,700,000 991,200,000 1,387,900,000 1,225,100,000 1,033,300,000 1,043,700,000 1,695,000,000 1,178,300,000 1,053,200,000 1,012,300,000 1,275,200,000 1,071,200,000 1,039,300,000 944,700,000 1,191,200,000 1,113,200,000 1,052,800,000 991,700,000 1,328,700,000  
      operating expenses
                                                                  
      cost of sales
    1,391,000,000 921,500,000 608,100,000 570,500,000 1,165,700,000 738,400,000 520,800,000 469,700,000 927,100,000 761,100,000 587,400,000 533,000,000 1,309,700,000 1,235,400,000 805,100,000 935,000,000 1,383,400,000 958,800,000 560,700,000 525,900,000 1,265,600,000 657,500,000 482,800,000 444,500,000 734,700,000 693,000,000 484,300,000 491,900,000 1,009,600,000 854,000,000 524,100,000 547,700,000 972,100,000 797,200,000 542,700,000 541,800,000 941,100,000 745,500,000 554,700,000 508,300,000 838,900,000 682,600,000 590,600,000                    
      other operation and maintenance
    608,700,000 591,500,000 605,100,000 596,200,000 608,000,000 527,000,000 566,800,000 533,400,000 530,800,000 553,900,000 516,600,000 496,000,000 534,000,000 580,300,000 454,300,000 449,000,000 454,400,000 588,100,000 473,700,000 463,800,000 479,900,000 604,700,000 498,700,000 473,100,000 455,700,000 601,400,000 529,200,000 503,600,000 550,600,000 667,800,000 553,100,000 537,700,000 511,900,000 593,600,000 471,700,000 479,800,000 501,900,000 614,500,000 517,500,000 522,000,000 531,500,000 555,700,000 535,900,000 337,000,000 280,700,000 331,600,000 249,400,000 256,000,000 275,400,000 333,400,000 268,100,000 265,400,000 288,100,000 317,300,000 244,600,000 267,900,000 286,300,000 347,500,000 296,900,000 298,900,000 313,500,000  
      depreciation and amortization
    379,800,000 376,300,000 373,400,000 368,900,000 359,900,000 344,000,000 340,500,000 336,600,000 333,400,000 324,500,000 320,300,000 313,900,000 305,500,000 284,600,000 280,300,000 279,600,000 278,100,000 275,100,000 271,600,000 266,200,000 261,400,000 249,300,000 245,000,000 242,500,000 239,100,000 236,200,000 233,800,000 229,900,000 226,400,000 217,700,000 212,800,000 206,700,000 208,600,000 205,100,000 201,200,000 197,700,000 194,600,000 193,100,000 191,600,000 190,000,000 187,900,000 179,200,000 176,500,000 105,700,000 105,100,000 103,500,000 103,300,000 101,400,000 100,600,000 99,000,000 96,900,000 96,700,000 95,500,000 94,500,000 91,800,000 90,300,000 87,600,000 84,000,000 82,600,000 82,300,000 81,300,000  
      property and revenue taxes
    74,700,000 64,900,000 67,800,000 69,000,000 78,400,000 71,800,000 51,700,000 67,500,000 75,500,000 57,700,000 61,100,000 61,800,000 69,600,000 77,700,000 59,100,000 56,100,000 60,800,000 53,100,000 50,500,000 51,500,000 55,200,000 51,400,000 54,300,000 49,800,000 52,500,000 53,800,000 49,800,000 50,200,000 48,000,000 47,500,000 51,000,000 49,600,000 48,800,000 47,000,000 48,300,000 50,000,000 49,600,000 48,200,000 49,700,000 49,600,000 47,200,000 50,600,000 50,000,000 31,900,000 31,900,000 30,300,000 30,600,000 30,300,000 30,600,000 28,300,000 29,500,000 29,400,000 29,500,000 30,500,000 30,400,000 30,200,000 30,300,000 28,200,000 28,900,000 28,300,000 28,300,000  
      total operating expenses
    2,454,200,000 2,084,200,000 1,654,400,000 1,604,600,000 2,212,000,000 1,693,300,000 1,479,800,000 1,407,200,000 1,866,800,000 1,876,100,000 1,485,400,000 1,404,700,000 2,218,800,000 2,178,000,000 1,598,800,000 1,719,700,000 2,176,700,000 1,875,100,000 1,356,500,000 1,307,400,000 2,062,100,000 1,562,900,000 1,280,800,000 1,209,900,000 1,482,000,000 1,584,400,000 1,297,100,000 1,275,600,000 1,834,600,000 1,787,000,000 1,341,000,000 1,341,700,000 1,741,400,000 1,642,900,000 1,263,900,000 1,269,300,000 1,687,200,000 1,601,300,000 1,313,500,000 1,269,900,000 1,605,500,000 1,468,100,000 1,353,000,000 827,600,000 1,031,600,000 988,900,000 790,700,000 806,100,000 1,316,700,000 954,700,000 795,200,000 782,800,000 954,200,000 869,800,000 758,700,000 722,100,000 895,500,000 920,200,000 828,500,000 817,300,000 1,033,100,000  
      operating income
    980,000,000 452,900,000 449,600,000 404,900,000 937,500,000 590,900,000 383,700,000 364,800,000 813,400,000 341,400,000 472,000,000 425,300,000 669,300,000 380,400,000 404,200,000 408,200,000 731,400,000 326,800,000 390,000,000 368,800,000 629,300,000 370,500,000 370,200,000 338,800,000 626,600,000 363,100,000 310,900,000 314,600,000 542,800,000 289,800,000 302,700,000 330,800,000 545,100,000 412,100,000 393,600,000 362,200,000 617,300,000 361,700,000 399,000,000 332,100,000 589,300,000 380,200,000 345,700,000 165,800,000 358,800,000 243,500,000 246,100,000 240,700,000 381,800,000 271,600,000 258,000,000 229,500,000 321,000,000 201,400,000 280,600,000 222,600,000 295,700,000 193,000,000 224,300,000 174,400,000 295,600,000  
      yoy
    4.53% -23.35% 17.17% 10.99% 15.26% 73.08% -18.71% -14.23% 21.53% -10.25% 16.77% 4.19% -8.49% 16.40% 3.64% 10.68% 16.22% -11.79% 5.35% 8.85% 0.43% 2.04% 19.07% 7.69% 15.44% 25.29% 2.71% -4.90% -0.42% -29.68% -23.09% -8.67% -11.70% 13.93% -1.35% 9.06% 4.75% -4.87% 15.42% 100.30% 64.24% 56.14% 40.47% -31.12% -6.02% -10.35% -4.61% 4.88% 18.94% 34.86% -8.05% 3.10% 8.56% 4.35% 25.10% 27.64% 0.03%      
      qoq
    116.38% 0.73% 11.04% -56.81% 58.66% 54.00% 5.18% -55.15% 138.25% -27.67% 10.98% -36.46% 75.95% -5.89% -0.98% -44.19% 123.81% -16.21% 5.75% -41.40% 69.85% 0.08% 9.27% -45.93% 72.57% 16.79% -1.18% -42.04% 87.30% -4.26% -8.49% -39.31% 32.27% 4.70% 8.67% -41.33% 70.67% -9.35% 20.14% -43.65% 55.00% 9.98% 108.50% -53.79% 47.35% -1.06% 2.24% -36.96% 40.57% 5.27% 12.42% -28.50% 59.38% -28.23% 26.06% -24.72% 53.21% -13.95% 28.61% -41.00%   
      equity in earnings of transmission affiliates
    59,500,000 55,500,000 54,800,000 51,900,000 53,600,000 69,200,000 46,700,000 46,800,000 44,800,000 45,400,000 44,700,000 43,600,000 43,800,000 46,300,000 63,700,000 43,000,000 41,700,000 31,900,000 42,300,000 41,300,000 42,600,000 43,000,000 40,100,000 52,900,000 39,800,000 15,900,000 38,700,000 36,900,000 36,100,000 41,500,000 33,700,000 28,700,000 32,800,000                              
      other income
    48,200,000 39,500,000 23,800,000 26,500,000 18,100,000 49,500,000 44,000,000 40,600,000 44,100,000 46,800,000 41,800,000 48,300,000 40,800,000 34,700,000 34,700,000 19,800,000 39,600,000 35,500,000 25,200,000 39,700,000 32,800,000 19,600,000 25,700,000 28,600,000 5,600,000 25,900,000 21,800,000 23,600,000 30,900,000 5,300,000 26,100,000 31,400,000 7,500,000 19,400,000 16,400,000 13,100,000 15,700,000 8,200,000 7,500,000 32,400,000 32,700,000 18,700,000 11,100,000 26,100,000 3,000,000 3,025,000 2,900,000 8,100,000 1,100,000 3,825,000 5,100,000 5,800,000 4,400,000 8,400,000 9,000,000 8,600,000 16,000,000 10,775,000 16,200,000 14,400,000 12,500,000  
      interest expense
    228,500,000 227,700,000 223,600,000 220,800,000 223,000,000 218,500,000 204,200,000 200,600,000 192,000,000 193,500,000 182,500,000 178,700,000 172,200,000 150,200,000 127,500,000 119,800,000 117,600,000 113,600,000 118,000,000 120,000,000 119,500,000 117,900,000 122,000,000 124,400,000 129,400,000 127,200,000 125,800,000 124,100,000 124,400,000 117,900,000 112,000,000 108,500,000 106,700,000 105,300,000 103,800,000 101,900,000 104,700,000 102,600,000 99,100,000 100,100,000 100,900,000 105,800,000 103,800,000 62,100,000 59,700,000 59,800,000 60,400,000 59,000,000 62,300,000 61,800,000 62,000,000 63,300,000 65,000,000 66,900,000 60,900,000 61,500,000 58,900,000 58,200,000 56,800,000 57,400,000 63,400,000  
      other expense
    -120,800,000 -132,700,000 -145,000,000 -142,400,000 -151,300,000 -76,700,000 -113,500,000 -113,200,000 -103,100,000 -101,300,000 -96,000,000 -86,800,000 -87,600,000 -69,200,000 -29,100,000 -57,000,000 -36,300,000 -82,500,000 -50,500,000 -39,000,000 -44,100,000 -45,775,000 -56,200,000 -42,900,000 -84,000,000 -85,400,000 -65,300,000 -63,600,000 -57,400,000   -48,400,000 -66,400,000 -54,500,000 -48,200,000 -47,000,000 -47,100,000 -29,950,000 -53,300,000 -36,800,000 -29,700,000 -61,400,000 -52,700,000                    
      income before income taxes
    859,200,000 320,200,000 304,600,000 262,500,000 786,200,000 514,200,000 270,200,000 251,600,000 710,300,000 240,100,000 376,000,000 338,500,000 581,700,000 311,200,000 375,100,000 351,200,000 695,100,000 244,300,000 339,500,000 329,800,000 585,200,000 276,800,000 314,000,000 295,900,000 542,600,000 277,700,000 245,600,000 251,000,000 485,400,000 218,700,000 250,500,000 282,400,000 478,700,000 357,600,000 345,400,000 315,200,000 570,200,000 306,100,000 345,700,000 295,300,000 559,600,000 318,800,000 293,000,000 144,100,000 318,200,000 198,200,000 206,600,000 207,300,000 337,900,000 171,125,000 218,200,000 189,300,000 277,000,000    268,400,000      
      income tax expense
    53,100,000 3,400,000 34,400,000 19,500,000 60,700,000 61,100,000 31,600,000 41,600,000 87,700,000 21,600,000 60,400,000 48,500,000 74,100,000 59,000,000 73,400,000 63,400,000 127,100,000 20,500,000 50,800,000 54,100,000 74,900,000 37,200,000 46,900,000 53,800,000 90,000,000 33,500,000 11,300,000 15,200,000 65,000,000 13,400,000 17,000,000 51,100,000 88,300,000 -75,300,000 129,700,000 115,800,000 213,300,000 111,400,000 128,400,000 113,600,000 213,100,000 137,700,000 110,500,000 63,200,000 122,400,000 76,800,000 80,300,000 74,300,000 130,300,000 86,500,000 80,700,000 70,300,000 100,400,000 53,700,000 89,700,000 66,600,000 96,300,000      
      net income
    806,100,000 316,800,000 270,200,000 243,000,000 725,500,000 453,100,000 238,600,000 210,000,000 622,600,000 218,500,000 315,600,000 290,000,000 507,600,000 252,200,000 301,700,000 287,800,000 568,000,000 223,800,000 288,700,000 275,700,000 510,300,000 239,600,000 267,100,000 242,100,000 452,600,000 244,200,000 234,300,000 235,800,000 420,400,000 205,300,000 233,500,000 231,300,000 390,400,000 432,900,000 215,700,000 199,400,000 356,900,000 194,700,000 217,300,000 181,700,000 346,500,000 181,100,000 182,500,000 80,900,000 195,800,000 121,400,000 126,300,000 133,000,000 207,600,000 144,300,000 137,500,000 119,000,000 176,600,000 98,800,000 156,100,000 119,300,000 172,100,000 116,000,000 129,800,000 109,500,000 170,900,000  
      yoy
    11.11% -30.08% 13.24% 15.71% 16.53% 107.37% -24.40% -27.59% 22.66% -13.36% 4.61% 0.76% -10.63% 12.69% 4.50% 4.39% 11.31% -6.59% 8.09% 13.88% 12.75% -1.88% 14.00% 2.67% 7.66% 18.95% 0.34% 1.95% 7.68% -52.58% 8.25% 16.00% 9.39% 122.34% -0.74% 9.74% 3.00% 7.51% 19.07% 124.60% 76.97% 49.18% 44.50% -39.17% -5.68% -15.87% -8.15% 11.76% 17.55% 46.05% -11.92% -0.25% 2.61% -14.83% 20.26% 8.95% 0.70%      
      qoq
    154.45% 17.25% 11.19% -66.51% 60.12% 89.90% 13.62% -66.27% 184.94% -30.77% 8.83% -42.87% 101.27% -16.41% 4.83% -49.33% 153.80% -22.48% 4.72% -45.97% 112.98% -10.30% 10.33% -46.51% 85.34% 4.23% -0.64% -43.91% 104.77% -12.08% 0.95% -40.75% -9.82% 100.70% 8.17% -44.13% 83.31% -10.40% 19.59% -47.56% 91.33% -0.77% 125.59% -58.68% 61.29% -3.88% -5.04% -35.93% 43.87% 4.95% 15.55% -32.62% 78.74% -36.71% 30.85% -30.68% 48.36% -10.63% 18.54% -35.93%   
      preferred stock dividends of subsidiary
    300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000 300,000                      
      net income attributed to noncontrolling interests
    -1,400,000    -1,000,000                                                          
      net income attributed to common shareholders
    804,400,000 316,600,000 271,300,000 245,400,000 724,200,000 453,500,000 240,100,000 211,300,000 622,300,000 218,500,000 316,000,000 289,700,000 507,500,000 252,700,000 302,000,000 287,500,000 565,900,000 224,200,000 290,000,000 276,000,000 510,100,000 239,000,000 266,800,000 241,600,000 452,500,000 243,900,000 234,300,000 235,700,000 420,100,000 205,000,000 233,200,000 231,000,000 390,100,000 432,600,000 215,400,000 199,100,000 356,600,000 194,400,000 217,000,000 181,400,000 346,200,000                      
      eps
                                                                  
      basic
    2,470,000 970,000 840,000 770,000                                                           
      diluted
    2,450,000 960,000 830,000 760,000                                                           
      weighted-average common shares outstanding
                                                                  
      basic
    325,600,000 321,900,000 323,500,000 320,300,000 318.2 316.2 316.2 315.9 315.6 315.4 315.4 315.4 315.4 315.4 315.4 315.4 315.4 315.4 315.4 315.4 315.4 315.4 315.4 315.4 315.4 315.4 315.4 315.4 315.5 315.5 315.5 315.5 315.5 315.6 315.6 315.6 315.6 315.6 315.6 315.6 315.7 271.1 315.7 227.5 225.5 225.6 225.5 225.5 225.8 227.6 226.8 228.4 228.9 230.2 230.4 230.4 230.5 232.6 232.2 233.7 233.7  
      diluted
    328,300,000 323,800,000 325,600,000 322,200,000 319.3 316.5 316.5 316.2 315.9 315.9 315.8 315.9 315.9 316.1 316.2 316.2 316.2 316.3 316.3 316.3 316.2 316.5 316.5 316.5 316.7 316.7 316.8 316.7 316.7 316.9 316.9 316.9 316.9 317.2 317.5 317.4 317.2 316.9 316.9 317 317.1 272.7 317.1 229.1 227.3 227.5 227.4 227.6 227.7 229.7 228.8 230.5 231.2 232.8 232.9 233.1 233.2 235.4 234.9 236.6 236.6  
      net loss attributed to noncontrolling interests
     100,000 1,400,000 2,700,000  700,000 1,800,000 1,600,000  300,000 700,000  200,000 800,000 600,000  -1,800,000 700,000 1,600,000 600,000 100,000   -200,000 200,000  300,000 200,000                                   
      earnings per share
                                                                  
      basic
        2.28 1.43 0.76 0.67 1.97 0.69 0.92 1.61 0.8 0.96 0.91 1.79 0.71 0.92 0.88 1.62 0.75 0.85 0.77 1.43 0.78 0.74 0.75 1.33 0.65 0.74 0.73 1.24 1.37 0.68 0.63 1.13 0.62 0.69 0.57 1.1 0.57 0.58 0.36 0.87 0.54 0.56 0.59 0.92 0.475 0.61 0.52 0.77    0.75      
      diluted
        2.27 1.43 0.76 0.67 1.97 0.7 0.92 1.61 0.8 0.96 0.91 1.79 0.71 0.92 0.87 1.61 0.75 0.84 0.76 1.43 0.77 0.74 0.74 1.33 0.64 0.74 0.73 1.23 1.36 0.68 0.63 1.12 0.61 0.68 0.57 1.09 0.56 0.58 0.35 0.86 0.54 0.56 0.58 0.91 0.47 0.6 0.52 0.76    0.74      
      dividends per share of common stock
                                 0.414 0.553 0.553 0.553 0.39 0.52 0.52 0.52 0.371 0.495 0.495 0.495 0.323   0.423 0.293 0.39 0.39 0.39 0.266 0.383 0.34 0.34 0.225 0.3 0.3 0.3 0.195 0.26 0.26 0.26  
      equity in earnings of transmission affiliate
                                     30,725,000 39,200,000 41,800,000 41,900,000 38,800,000 38,300,000 30,900,000 38,500,000 25,700,000 40,000,000 14,300,000 16,100,000 13,200,000 18,000,000 17,500,000 17,300,000 17,500,000 17,100,000 17,300,000 16,600,000 16,800,000 17,100,000 16,200,000 15,600,000 16,100,000 15,700,000 15,200,000 15,500,000  
      fuel and purchased power
                                               273,700,000 297,700,000 275,400,000 336,800,000 292,500,000 318,600,000 266,800,000 339,100,000 276,100,000 271,000,000 249,700,000 336,400,000 258,700,000 253,800,000 265,200,000 350,900,000 286,000,000 267,600,000  
      cost of gas sold
                                               79,300,000 316,200,000 248,100,000 70,600,000 125,900,000 591,500,000 227,200,000 61,600,000 115,200,000 270,100,000 177,800,000 55,500,000 75,000,000 237,500,000 195,300,000 69,200,000 121,800,000 342,400,000  
      treasury grant
                                               2,200,000 2,500,000 7,300,000 3,500,000 3,100,000 3,500,000              
      the accompanying notes to consolidated condensed financial statements are an integral part of these financial statements.
                                                                  
      income from continuing operations before income taxes
                                                         152,500,000 245,800,000 185,900,000  170,500,000 199,400,000 146,600,000 260,200,000  
      income from continuing operations
                                                         98,800,000 156,100,000 119,300,000  114,100,000 129,800,000 98,000,000 170,900,000  
      income from discontinued operations, net of tax
                                                             1,900,000  11,500,000   
      earnings per share
                                                                  
      continuing operations
                                                         0.43 0.68 0.52  0.49 0.56 0.42 0.73  
      discontinued operations
                                                             0.01  0.05   
      total earnings per share
                                                         0.43 0.68 0.52  0.5 0.56 0.47 0.73  
      amortization of gain
                                                                  
      income taxes
                                                             51,875,000 69,600,000 48,600,000 89,300,000  
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2014-12-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2004-12-31 
                                                               
        assets
                                                               
        current assets
      2,981,000,000 3,284,700,000 2,515,300,000 2,599,100,000 2,943,300,000 2,911,700,000 2,619,200,000 2,584,100,000 2,604,600,000 2,795,700,000 2,443,600,000 2,457,600,000 2,838,500,000 3,187,700,000 2,771,000,000 2,642,500,000 2,562,600,000 2,656,700,000 2,408,900,000 2,278,100,000 2,355,500,000 2,083,000,000 1,727,200,000 1,713,400,000 1,845,300,000 2,093,600,000 1,773,000,000 1,838,700,000 2,008,300,000 2,247,600,000 1,839,700,000 1,810,400,000 1,980,800,000 2,213,500,000 1,823,300,000 1,779,700,000 1,855,300,000                     
        cash and cash equivalents
      45,600,000 27,600,000 51,100,000 23,000,000 82,200,000 9,800,000 322,500,000 224,000,000 38,900,000 42,900,000 45,900,000 54,700,000 35,700,000 28,900,000 28,500,000 30,300,000 33,800,000 16,300,000 26,000,000 35,000,000 26,100,000 24,800,000 13,100,000 13,300,000 15,400,000 37,500,000 20,000,000 37,900,000 30,600,000 84,500,000 14,500,000 29,800,000 48,100,000 38,900,000 18,100,000 36,500,000 45,700,000 25,000,000 32,100,000 34,700,000 1,300,000 22,200,000 214,400,000 37,300,000 26,000,000    900,000    500,000    35,600,000 
        accounts receivable and unbilled revenues, net of reserves of 156.0 and 148.7, respectively
      1,914,400,000                                                         
        materials, supplies, and inventories
      612,300,000 803,400,000 842,800,000 703,000,000 576,000,000 813,200,000 789,900,000 695,800,000 608,600,000 775,200,000 749,900,000 603,700,000 523,500,000 807,100,000 924,600,000 572,200,000 368,800,000 635,800,000 645,700,000 452,700,000 353,500,000 528,600,000 573,400,000 467,700,000 391,100,000 549,800,000 593,300,000 461,400,000 330,100,000 548,200,000 608,500,000 466,600,000 376,000,000 539,000,000 672,200,000 510,000,000 417,100,000 654,300,000 494,500,000 470,700,000  719,800,000                
        prepaid taxes
      125,200,000 178,800,000 125,500,000 209,000,000 171,600,000 214,900,000 124,500,000 182,600,000 143,000,000 173,900,000 157,800,000 215,100,000 153,000,000 201,800,000 124,300,000 193,000,000                                          
        other prepayments
      80,500,000 92,400,000 82,400,000 51,400,000 76,200,000 82,600,000 50,700,000 52,600,000 70,900,000 76,800,000 40,600,000 42,800,000 64,900,000 69,800,000 32,200,000 33,500,000                                          
        other
      203,000,000 119,800,000 144,000,000 116,300,000 224,900,000 121,900,000 156,100,000 186,400,000 186,200,000 223,700,000 87,800,000 74,900,000 66,600,000 261,700,000 148,600,000 41,800,000 147,100,000 253,400,000 51,200,000 110,400,000 40,500,000 63,400,000 59,400,000 64,200,000 61,900,000 68,000,000 81,800,000 80,300,000 50,300,000 77,200,000 61,800,000 49,300,000 34,000,000 74,900,000 43,000,000 47,300,000 39,300,000 91,400,000 88,000,000 87,500,000 17,500,000 97,000,000 181,900,000 1,500,000 36,100,000    2,100,000    2,600,000    99,500,000 
        long-term assets
      48,753,000,000 48,233,600,000 47,293,600,000 45,925,200,000 45,288,800,000 44,451,500,000 42,577,300,000 41,998,100,000 41,322,600,000 41,144,000,000 40,998,100,000 40,561,700,000 39,957,400,000 38,684,400,000 37,990,000,000 36,964,600,000 36,411,900,000 36,331,800,000 35,992,000,000 35,516,800,000 35,245,100,000 34,945,100,000 33,694,800,000 33,328,600,000 32,986,900,000 32,858,200,000 32,604,200,000 32,095,600,000 31,728,800,000 31,228,200,000 30,722,700,000 30,127,200,000 29,804,800,000 29,377,000,000 29,189,700,000 28,779,900,000 28,161,300,000                     
        property, plant, and equipment, net of accumulated depreciation and amortization of 12,667.5 and 12,411.5, respectively
      38,707,000,000                                                         
        regulatory assets
      3,111,300,000 3,156,300,000 3,217,400,000 3,231,800,000 3,283,300,000 3,339,700,000 3,346,500,000 3,393,100,000 3,247,000,000 3,249,800,000 3,197,100,000 3,238,900,000 3,313,100,000 3,264,600,000 3,164,200,000 3,144,700,000 3,163,600,000 3,264,800,000 3,488,700,000 3,409,900,000 3,487,100,000 3,524,100,000 3,462,200,000 3,510,400,000 3,566,100,000 3,506,700,000 3,999,900,000 4,007,000,000 4,009,800,000 3,805,100,000 3,643,500,000 3,645,900,000 2,929,700,000 2,803,200,000 3,107,700,000 3,108,400,000 3,084,100,000 3,004,600,000 3,031,400,000 3,060,800,000  2,805,500,000 2,796,400,000  1,108,500,000            849,400,000 
        equity investment in transmission affiliates
      2,369,500,000 2,280,400,000 2,268,800,000 2,200,100,000 2,149,000,000 2,108,900,000 2,080,800,000 2,055,800,000 2,027,100,000 2,005,900,000 1,983,800,000 1,955,900,000 1,921,700,000 1,909,200,000 1,875,900,000 1,837,200,000 1,818,200,000 1,789,400,000 1,791,300,000 1,782,000,000 1,773,600,000 1,764,300,000 1,750,400,000 1,744,700,000 1,717,700,000 1,720,800,000 1,720,400,000 1,696,500,000 1,670,600,000 1,665,300,000 1,613,700,000 1,596,600,000 1,598,900,000 1,553,400,000                        
        goodwill
      3,052,800,000 3,052,800,000 3,052,800,000 3,052,800,000 3,052,800,000 3,052,800,000 3,052,800,000 3,052,800,000 3,052,800,000 3,052,800,000 3,052,800,000 3,052,800,000 3,052,800,000 3,052,800,000 3,052,800,000 3,052,800,000 3,052,800,000 3,052,800,000 3,052,800,000 3,052,800,000 3,052,800,000 3,052,800,000 3,052,800,000 3,052,800,000 3,052,800,000 3,052,800,000 3,052,800,000 3,052,800,000 3,052,800,000 3,052,800,000 3,052,800,000 3,052,800,000 3,052,800,000 3,053,500,000 3,053,500,000 3,053,500,000 3,046,200,000 3,046,200,000 3,046,200,000 2,999,100,000  3,389,100,000 3,386,500,000  441,900,000            441,900,000 
        pension and opeb assets
      1,098,500,000 1,082,400,000 1,016,400,000 1,000,400,000 983,800,000 968,500,000 918,100,000 901,200,000 883,900,000 870,900,000 918,700,000 951,000,000 933,400,000 916,700,000 965,800,000 942,100,000 910,200,000 881,300,000                                        
        total assets
      51,734,000,000 51,518,300,000 49,808,900,000 48,524,300,000 48,232,100,000 47,363,200,000 45,196,500,000 44,582,200,000 43,927,200,000 43,939,700,000 43,441,700,000 43,019,300,000 42,795,900,000 41,872,100,000 40,761,000,000 39,607,100,000 38,974,500,000 38,988,500,000 38,400,900,000 37,794,900,000 37,600,600,000 37,028,100,000 35,422,000,000 35,042,000,000 34,832,200,000 34,951,800,000 34,377,200,000 33,934,300,000 33,737,100,000 33,475,800,000 32,562,400,000 31,937,600,000 31,785,600,000 31,590,500,000 31,013,000,000 30,559,600,000 30,016,600,000 29,443,500,000 29,175,300,000 29,104,600,000 11,186,500,000 28,769,600,000 28,614,500,000 5,377,300,000 14,769,400,000    5,205,900,000    5,401,300,000    9,565,400,000 
        liabilities and equity
                                                               
        current liabilities
      4,389,400,000 5,593,400,000 5,050,300,000 4,697,600,000 5,862,900,000 4,841,900,000 4,009,400,000 3,491,600,000 4,709,700,000 5,114,800,000 4,073,700,000 4,096,900,000 3,765,800,000 4,611,000,000 3,369,700,000 3,817,800,000 3,264,400,000 3,753,000,000 3,692,600,000 3,373,900,000 3,714,900,000 4,148,100,000 2,840,000,000 3,484,600,000 2,847,700,000 3,182,700,000 2,818,400,000 3,362,000,000 2,889,900,000 3,331,700,000 3,602,500,000 3,053,200,000 3,605,900,000 3,869,300,000 3,026,100,000 2,787,300,000 2,054,600,000                     
        short-term debt
      2,045,200,000 1,924,700,000 1,260,600,000 810,300,000 1,327,100,000 1,116,600,000 597,000,000 761,300,000 2,574,200,000 2,020,900,000 1,549,300,000 1,090,300,000 1,261,200,000 1,647,100,000 1,259,500,000 1,629,100,000 1,450,000,000 1,897,000,000 1,508,900,000 1,424,500,000 1,580,400,000 1,776,900,000 771,000,000 1,211,500,000 827,200,000 830,800,000 686,400,000 1,262,700,000 1,145,200,000 1,440,100,000 1,788,300,000 1,370,000,000 1,200,300,000 1,444,600,000 993,500,000 774,800,000 670,400,000 789,400,000 927,800,000 896,400,000 307,900,000 661,500,000 826,300,000      67,000,000    146,500,000     
        current portion of long-term debt
      520,400,000 1,519,400,000 1,901,400,000 2,250,400,000 2,729,900,000 1,729,000,000 1,823,700,000 1,157,400,000 640,500,000 1,264,200,000 712,900,000 1,377,500,000 808,200,000 881,200,000 167,200,000 174,400,000 163,400,000 169,400,000 496,700,000 493,600,000 787,000,000 785,800,000 596,200,000 895,000,000 694,300,000 693,200,000 692,600,000 766,500,000 366,000,000 365,000,000 369,400,000 293,500,000 957,900,000 842,100,000 709,300,000 708,400,000 158,000,000 89,400,000 95,800,000 152,400,000  606,000,000                
        accounts payable
      830,800,000 1,140,100,000 917,000,000 816,500,000 791,500,000 1,137,100,000 740,700,000 799,900,000 640,900,000 896,600,000 867,700,000 748,500,000 680,000,000 1,198,100,000 1,158,000,000 1,078,200,000 693,700,000 1,005,700,000 872,800,000 744,600,000 656,000,000 880,700,000 751,300,000 696,600,000 597,900,000 908,100,000 769,000,000 715,600,000 674,100,000 876,400,000 690,400,000 681,000,000 592,800,000 859,900,000 743,900,000 724,100,000 582,300,000 663,500,000 620,500,000 584,400,000  777,600,000 777,100,000               
        accrued interest
      264,100,000      202,400,000                              115,100,000 115,200,000  118,600,000                  
        long-term liabilities
      32,775,300,000 31,872,100,000 30,747,800,000 30,156,600,000 28,942,200,000 29,719,400,000 28,795,900,000 28,696,200,000 26,791,400,000 26,753,400,000 27,267,700,000 26,891,000,000 27,042,400,000 25,644,500,000 25,795,200,000 24,298,700,000 24,265,600,000 24,122,200,000 23,601,700,000 23,390,600,000 22,918,100,000 22,217,500,000 22,022,900,000 21,064,700,000 21,499,900,000 21,514,500,000 21,372,400,000 20,424,000,000 20,735,100,000 20,301,400,000 19,117,200,000 19,128,200,000 18,481,500,000 18,229,400,000 18,761,200,000 18,589,100,000 18,806,000,000                     
        long-term debt
      19,381,800,000 18,498,100,000 17,663,300,000 17,110,400,000 16,161,800,000 17,178,100,000 16,889,200,000 16,907,800,000 15,375,800,000 15,512,800,000 15,956,500,000 15,608,300,000 15,827,300,000 14,766,200,000 14,910,700,000 13,523,400,000 13,514,300,000 13,523,700,000 12,678,100,000 12,695,700,000 12,317,700,000 11,728,100,000 11,652,500,000 10,721,600,000 11,194,700,000 11,211,000,000 10,897,300,000 9,921,000,000 10,326,700,000 9,994,000,000 9,119,000,000 9,209,300,000 8,617,500,000 8,746,600,000 8,785,800,000 8,799,700,000 9,143,600,000 9,088,100,000 8,902,100,000 8,955,800,000 1,887,200,000 8,727,000,000 8,547,600,000 695,800,000     694,300,000    693,600,000     
        finance lease obligations
      370,400,000 372,000,000 364,200,000 361,800,000 293,900,000 303,300,000                                                    
        deferred income taxes
      5,967,200,000 5,891,700,000 5,814,300,000 5,739,500,000 5,577,200,000 5,514,700,000 5,322,200,000 5,265,400,000 5,120,000,000 4,918,500,000 4,832,200,000 4,774,000,000 4,703,200,000 4,625,600,000 4,524,900,000 4,493,100,000 4,426,200,000 4,308,500,000 4,295,800,000 4,269,600,000 4,214,100,000 4,059,800,000 3,974,700,000 3,945,900,000 3,870,000,000 3,769,300,000 3,613,800,000 3,598,100,000 3,459,900,000 3,388,100,000 3,172,100,000 3,117,100,000 3,069,900,000 2,999,800,000 5,616,000,000 5,416,100,000 5,287,400,000 5,067,000,000 4,938,300,000 4,856,500,000  250,800,000                
        deferred revenue
      309,600,000 314,200,000 318,300,000 323,900,000 329,300,000 334,600,000 339,900,000 345,500,000 351,100,000 356,400,000 360,400,000 363,500,000 367,000,000 370,700,000 374,200,000 378,700,000 383,800,000 389,200,000 394,900,000 400,700,000 406,400,000 412,200,000 417,800,000 423,700,000 428,500,000 497,100,000 502,800,000 508,700,000 514,500,000 520,400,000 525,900,000 531,800,000 538,100,000 543,300,000 549,200,000 554,600,000 561,000,000 569,500,000 572,300,000 576,100,000  588,100,000 596,200,000               
        regulatory liabilities
      4,114,700,000 4,121,300,000 3,940,300,000 4,039,000,000 4,043,900,000 3,958,000,000 3,889,100,000 3,834,700,000 3,730,200,000 3,697,700,000 3,720,000,000 3,712,900,000 3,689,800,000 3,735,500,000 3,947,000,000 4,000,100,000 4,032,600,000 3,946,000,000 4,131,200,000 3,935,500,000 3,890,800,000 3,928,100,000 3,939,300,000 3,968,500,000 3,987,100,000 3,992,800,000 4,198,800,000 4,243,600,000 4,274,300,000 4,251,600,000 3,960,300,000 3,959,200,000 3,924,300,000 3,718,600,000 1,534,900,000 1,574,000,000 1,563,400,000 1,451,100,000 1,469,700,000 1,411,800,000  1,312,300,000 1,313,000,000               
        intangible liabilities
      565,300,000 580,300,000 595,000,000 609,700,000 624,500,000 566,800,000 554,600,000 568,000,000 581,400,000 594,800,000 608,200,000 621,600,000                                              
        environmental remediation liabilities
      474,300,000 484,100,000 438,200,000 438,900,000 442,100,000 445,800,000 430,500,000 437,000,000 448,900,000 463,700,000 456,600,000 475,800,000 491,700,000 499,600,000 497,700,000 504,300,000 517,200,000 532,600,000 510,300,000 518,200,000 532,900,000 532,900,000 589,400,000 589,400,000 589,400,000 589,200,000 631,800,000 631,800,000 631,800,000 616,400,000 617,400,000 617,200,000 617,200,000 617,400,000 617,700,000 622,600,000 630,700,000                     
        aros
      660,600,000 647,000,000 623,200,000 616,400,000 601,500,000 580,000,000 547,900,000 543,600,000 377,700,000 374,200,000                                                
        commitments and contingencies
                                                               
        common shareholders' equity
      14,131,000,000 13,613,600,000 13,568,400,000 13,223,100,000 12,975,800,000 12,395,000,000 12,082,000,000 12,082,900,000 12,112,700,000 11,724,200,000 11,753,000,000 11,681,400,000 11,636,600,000 11,376,900,000 11,355,500,000 11,290,600,000 11,243,200,000 10,913,200,000 10,908,500,000 10,830,900,000 10,767,100,000 10,469,700,000 10,450,700,000 10,383,700,000 10,344,100,000 10,113,400,000 10,051,000,000 10,016,200,000 9,984,500,000 9,788,900,000 9,775,300,000 9,725,800,000 9,667,800,000 9,461,400,000 9,195,300,000 9,152,800,000 9,125,600,000                     
        common stock – 0.01 par value...
      3,300,000 3,300,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000 3,200,000                     
        additional paid in capital
      5,147,400,000 5,124,400,000 5,105,800,000 4,743,100,000 4,456,100,000 4,315,800,000 4,191,400,000 4,168,300,000 4,145,700,000 4,115,900,000 4,116,400,000 4,114,700,000 4,113,600,000 4,115,200,000 4,113,500,000 4,121,100,000 4,131,800,000 4,138,100,000 4,144,400,000 4,144,100,000 4,143,600,000 4,143,700,000 4,163,800,000 4,165,000,000 4,167,300,000 4,186,600,000 4,185,000,000 4,197,900,000 4,213,200,000 4,250,100,000 4,261,600,000 4,271,000,000 4,267,300,000 4,278,500,000 4,281,400,000 4,290,100,000 4,297,700,000 4,308,800,000 4,310,900,000 4,321,100,000  4,350,600,000                
        retained earnings
      8,987,800,000 8,493,500,000 8,467,300,000 8,484,700,000 8,524,400,000 8,083,800,000 7,895,300,000 7,919,200,000 7,971,600,000 7,612,800,000 7,640,400,000 7,570,400,000 7,526,700,000 7,265,300,000 7,242,000,000 7,169,500,000 7,111,400,000 6,775,100,000 6,764,500,000 6,688,200,000 6,626,000,000 6,329,600,000 6,290,100,000 6,222,800,000 6,180,700,000 5,927,700,000 5,869,900,000 5,821,700,000 5,772,100,000 5,538,200,000 5,508,100,000 5,449,100,000 5,392,700,000 5,176,800,000 4,908,300,000 4,857,000,000 4,822,000,000 4,575,800,000 4,515,000,000 4,489,700,000  4,264,900,000                
        accumulated other comprehensive loss
      -7,500,000 -7,600,000 -7,900,000 -7,900,000 -7,900,000 -7,800,000 -7,900,000 -7,800,000 -7,800,000 -7,700,000 -7,000,000 -6,900,000 -6,900,000 -6,800,000 -3,200,000 -3,200,000 -3,200,000 -3,200,000 -3,600,000 -4,600,000 -5,700,000 -6,800,000 -6,400,000 -7,300,000 -7,100,000 -4,100,000 -7,100,000 -6,600,000 -4,000,000                             
        preferred stock of subsidiary
      30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000 30,400,000                  
        noncontrolling interests
      407,900,000 408,800,000 412,000,000 416,600,000 420,800,000 376,500,000 278,800,000 281,100,000 283,000,000 316,900,000 316,900,000 319,600,000 320,700,000 209,300,000 210,200,000 169,600,000 170,900,000 169,700,000 167,700,000 169,100,000 170,100,000 162,400,000 78,000,000 78,600,000 110,100,000 110,800,000 105,000,000 101,700,000 97,200,000 23,400,000                            
        total liabilities and equity
      51,734,000,000 51,518,300,000 49,808,900,000 48,524,300,000 48,232,100,000 47,363,200,000 45,196,500,000 44,582,200,000 43,927,200,000 43,939,700,000 43,441,700,000 43,019,300,000 42,795,900,000 41,872,100,000 40,761,000,000 39,607,100,000 38,974,500,000 38,988,500,000 38,400,900,000 37,794,900,000 37,600,600,000 37,028,100,000 35,422,000,000 35,042,000,000 34,832,200,000 34,951,800,000 34,377,200,000 33,934,300,000 33,737,100,000 33,475,800,000 32,562,400,000 31,937,600,000 31,785,600,000 31,590,500,000 31,013,000,000 30,559,600,000 30,016,600,000       5,377,300,000     5,205,900,000    5,401,300,000     
        accounts receivable and unbilled revenues, net of reserves of 148.7 and 162.8, respectively
       2,062,700,000                                                        
        property, plant, and equipment, net of accumulated depreciation and amortization of 12,411.5 and 11,611.9, respectively
       38,278,100,000                                                        
        accounts receivable and unbilled revenues, net of reserves of 129.5 and 162.8, respectively
        1,269,500,000                                                       
        property, plant, and equipment, net of accumulated depreciation and amortization of 12,229.4 and 11,611.9, respectively
        37,354,200,000                                                       
        accounts receivable and unbilled revenues, net of reserves of 142.2 and 162.8, respectively
         1,496,400,000                                                      
        property, plant, and equipment, net of accumulated depreciation and amortization of 12,025.9 and 11,611.9, respectively
         36,060,800,000                                                      
        accounts receivable and unbilled revenues, net of reserves of 159.4 and 162.8, respectively
          1,812,400,000                                                     
        property, plant, and equipment, net of accumulated depreciation and amortization of 11,838.7 and 11,611.9, respectively
          35,447,800,000                                                     
        accounts receivable and unbilled revenues, net of reserves of 162.8 and 193.5, respectively
           1,669,300,000                                                    
        property, plant, and equipment, net of accumulated depreciation and amortization of 11,611.9 and 11,073.1, respectively
           34,645,400,000                                                    
        accounts receivable and unbilled revenues, net of reserves of 155.0 and 193.5, respectively
            1,175,500,000                                                   
        property, plant, and equipment, net of accumulated depreciation and amortization of 11,442.8 and 11,073.1, respectively
            32,852,900,000                                                   
        accounts receivable and unbilled revenues, net of reserves of 166.9 and 193.5, respectively
             1,242,700,000                                                  
        property, plant, and equipment, net of accumulated depreciation and amortization of 11,263.4 and 11,073.1, respectively
             32,263,800,000                                                  
        customer credit balances
             178,800,000       170,900,000                                           
        accounts receivable and unbilled revenues, net of reserves of 190.7 and 193.5, respectively
              1,557,000,000                                                 
        property, plant, and equipment, net of accumulated depreciation and amortization of 11,275.0 and 11,073.1, respectively
              31,729,800,000                                                 
        accounts receivable and unbilled revenues, net of reserves of 193.5 and 199.3, respectively
               1,503,200,000                                                
        property, plant, and equipment, net of accumulated depreciation and amortization of 11,073.1 and 10,383.8, respectively
               31,581,500,000                                                
        pension and opeb obligations
               176,000,000   168,500,000 171,600,000 217,700,000 222,200,000 218,500,000 219,000,000 307,800,000 314,200,000 319,900,000 327,000,000 320,600,000 322,200,000 324,200,000 326,200,000 411,500,000 414,000,000 418,100,000 422,800,000 489,100,000 490,400,000 523,100,000 397,400,000 463,200,000 451,000,000 458,900,000 545,100,000 541,900,000                   
        accounts receivable and unbilled revenues, net of reserves of 176.8 and 199.3, respectively
                1,243,200,000                                               
        collateral on deposit
                118,400,000 151,300,000 214,200,000                                             
        property, plant, and equipment, net of accumulated depreciation and amortization of 10,914.6 and 10,383.8, respectively
                31,467,500,000                                               
        asset retirement obligations
                505,500,000 502,900,000                                              
        accounts receivable and unbilled revenues, net of reserves of 178.7 and 199.3, respectively
                 1,315,100,000                                              
        property, plant, and equipment, net of accumulated depreciation and amortization of 10,717.0 and 10,383.8, respectively
                 31,010,400,000                                              
        accounts receivable and unbilled revenues, net of reserves of 213.8 and 199.3, respectively
                  1,780,600,000                                             
        property, plant, and equipment, net of accumulated depreciation and amortization of 10,532.3 and 10,383.8, respectively
                  30,379,400,000                                             
        accounts receivable and unbilled revenues, net of reserves of 199.3 and 198.3, respectively
                   1,818,400,000                                            
        property, plant, and equipment, net of accumulated depreciation and amortization of 10,383.8 and 9,889.3, respectively
                   29,113,800,000                                            
        accounts receivable and unbilled revenues, net of reserves of 168.5 and 198.3, respectively
                    1,321,800,000                                           
        derivative assets
                    191,000,000 189,800,000 204,300,000  247,100,000                                       
        property, plant, and equipment, net of accumulated depreciation and amortization of 10,348.8 and 9,889.3, respectively
                    28,575,300,000                                           
        accounts receivable and unbilled revenues, net of reserves of 175.8 and 198.3, respectively
                     1,447,700,000                                          
        amounts recoverable from customers
                     134,200,000   139,400,000 213,600,000 306,700,000                                     
        property, plant, and equipment, net of accumulated depreciation and amortization of 10,183.2 and 9,889.3, respectively
                     27,626,200,000                                          
        accounts receivable and unbilled revenues, net of reserves of 200.6 and 198.3, respectively
                      1,635,700,000                                         
        prepayments
                      172,900,000 245,500,000 195,700,000 283,700,000 258,800,000 263,400,000 169,500,000 210,300,000 200,000,000 261,800,000 166,100,000 254,800,000 167,200,000 256,800,000 137,600,000 178,600,000 165,900,000 210,000,000 142,000,000 181,600,000 161,800,000 217,400,000 235,300,000 243,400,000     145,700,000             
        property, plant, and equipment, net of accumulated depreciation and amortization of 10,041.4 and 9,889.3, respectively
                      27,110,200,000                                         
        accounts receivable and unbilled revenues, net of reserves of 198.3 and 220.1, respectively
                       1,505,700,000                                        
        property, plant, and equipment, net of accumulated depreciation and amortization of 9,889.3 and 9,364.7, respectively
                       26,982,400,000                                        
        accounts receivable and unbilled revenues, net of reserves of 199.7 and 220.1, respectively
                        1,103,800,000                                       
        property, plant, and equipment, net of accumulated depreciation and amortization of 9,799.3 and 9,364.7, respectively
                        26,622,700,000                                       
        accounts receivable and unbilled revenues, net of reserves of 231.7 and 220.1, respectively
                         1,182,700,000                                      
        property, plant, and equipment, net of accumulated depreciation and amortization of 9,625.3 and 9,364.7, respectively
                         26,266,400,000                                      
        accounts receivable and unbilled revenues, net of reserves of 259.1 and 220.1, respectively
                          1,369,900,000                                     
        property, plant, and equipment, net of accumulated depreciation and amortization of 9,481.4 and 9,364.7, respectively
                          25,994,400,000                                     
        accrued payroll and benefits
                          123,000,000 174,000,000 173,900,000 161,600,000 128,600,000 199,800,000 167,000,000 159,300,000 125,900,000 185,400,000 143,100,000 130,700,000 107,400,000 169,100,000 136,800,000 140,000,000 107,500,000 127,800,000 134,500,000 102,700,000  154,900,000 135,700,000               
        accounts receivable and unbilled revenues, net of reserves of 220.1 and 140.0, respectively
                           1,202,800,000                                    
        property, plant, and equipment, net of accumulated depreciation and amortization of 9,364.7 and 8,878.7, respectively
                           25,707,400,000                                    
        accounts receivable and unbilled revenues, net of reserves of 173.3 and 140.0, respectively
                            911,800,000                                   
        property, plant, and equipment, net of accumulated depreciation and amortization of 9,308.6 and 8,878.7, respectively
                            24,551,700,000                                   
        accounts receivable and unbilled revenues, net of reserves of 164.7 and 140.0, respectively
                             957,900,000                                  
        property, plant, and equipment, net of accumulated depreciation and amortization of 9,157.5 and 8,878.7, respectively
                             24,171,800,000                                  
        accounts receivable and unbilled revenues, net of reserves of 164.8 and 140.0, respectively
                              1,176,900,000                                 
        property, plant, and equipment, net of accumulated depreciation and amortization of 9,042.3 and 8,878.7, respectively
                              23,797,100,000                                 
        amounts refundable to customers
                              155,800,000                                 
        accounts receivable and unbilled revenues, net of reserves of 140.0 and 149.2, respectively
                               1,176,500,000                                
        property, plant, and equipment, net of accumulated depreciation and amortization of 8,878.7 and 8,636.6, respectively
                               23,620,100,000                                
        accounts receivable and unbilled revenues, net of reserves of 137.8 and 149.2, respectively
                                911,800,000                               
        property, plant, and equipment, net of accumulated depreciation and amortization of 8,807.7 and 8,636.6, respectively
                                23,035,100,000                               
        accounts receivable and unbilled revenues, net of reserves of 143.3 and 149.2, respectively
                                 1,004,300,000                              
        property, plant, and equipment, net of accumulated depreciation and amortization of 8,705.0 and 8,636.6, respectively
                                 22,535,800,000                              
        accounts receivable and unbilled revenues, net of reserves of 163.2 and 149.2, respectively
                                  1,430,100,000                             
        property, plant, and equipment, net of accumulated depreciation and amortization of 8,589.0 and 8,636.6, respectively
                                  22,193,300,000                             
        accounts receivable and unbilled revenues, net of reserves of 149.2 and 143.2, respectively
                                   1,280,900,000                            
        property, plant, and equipment, net of accumulated depreciation of 8,515.9 and 8,618.5, respectively
                                   22,000,900,000                            
        accumulated other comprehensive income
                                   -2,600,000 2,400,000 2,500,000 4,600,000 2,900,000 2,400,000 2,500,000 2,700,000 3,700,000 4,400,000 4,300,000  11,200,000                
        accounts receivable and unbilled revenues, net of reserves of 153.7 and 143.2, respectively
                                    1,017,300,000                           
        property, plant, and equipment, net of accumulated depreciation of 8,589.3 and 8,618.5, respectively
                                    21,663,700,000                           
        accrued taxes
                                    217,400,000 213,500,000         75,600,000 57,900,000                
        noncontrolling interest in subsidiary
                                    37,000,000                           
        accounts receivable and unbilled revenues, net of reserves of 157.5 and 143.2, respectively
                                     1,086,100,000                          
        property, plant, and equipment, net of accumulated depreciation of 8,512.1 and 8,618.5, respectively
                                     21,078,400,000                          
        accounts receivable and unbilled revenues, net of reserves of 160.5 and 143.2, respectively
                                      1,356,800,000                         
        property, plant, and equipment, net of accumulated depreciation of 8,819.8 and 8,618.5, respectively
                                      21,466,300,000                         
        accounts receivable and unbilled revenues, net of reserves of 143.2 and 108.0, respectively
                                       1,350,700,000                        
        property, plant, and equipment, net of accumulated depreciation of 8,618.5 and 8,214.6, respectively
                                       21,347,000,000                        
        accounts receivable and unbilled revenues, net of reserves of 112.7 and 108.0, respectively
                                        948,000,000                       
        property, plant, and equipment, net of accumulated depreciation of 8,525.5 and 8,214.6, respectively
                                        20,882,900,000                       
        equity investment in transmission affiliate
                                        1,560,800,000 1,544,000,000 1,513,300,000 1,453,100,000 1,425,000,000 1,422,500,000  999,400,000 987,800,000  402,700,000            187,800,000 
        accounts receivable and unbilled revenues, net of reserves of 111.6 and 108.0, respectively
                                         1,004,300,000                      
        property, plant, and equipment, net of accumulated depreciation of 8,433.2 and 8,214.6, respectively
                                         20,524,300,000                      
        accounts receivable and unbilled revenues, net of reserves of 123.1 and 108.0, respectively
                                          1,191,400,000                     
        property, plant, and equipment, net of accumulated depreciation of 8,312.8 and 8,214.6, respectively
                                          19,990,200,000                     
        property, plant, and equipment
                                                               
        in service
                                           26,965,300,000 26,690,700,000 26,523,300,000  25,741,500,000 25,447,900,000  14,966,300,000            8,238,400,000 
        accumulated depreciation
                                           -8,141,500,000 -8,049,100,000 -8,005,900,000  -7,930,600,000 -7,857,400,000  -4,257,100,000             
        construction work in progress
                                           756,200,000 723,700,000 706,600,000  936,400,000 899,600,000  149,600,000            602,400,000 
        leased facilities
                                           32,200,000 33,600,000 35,000,000  37,900,000 39,300,000  47,800,000            98,900,000 
        net property, plant, and equipment
                                           19,612,200,000 19,398,900,000 19,259,000,000                  
        investments
                                                               
        total investments
                                           1,544,500,000 1,513,000,000 1,510,000,000  1,096,400,000 1,169,700,000  438,800,000            1,025,100,000 
        accounts receivable and unbilled revenues, net of reserves of 109.3 and 113.3, respectively
                                           871,500,000                    
        assets held for sale
                                               140,200,000                
        total current assets
                                           1,817,700,000 1,765,900,000 1,896,400,000 139,900,000 2,181,900,000 2,276,800,000 339,300,000 1,551,100,000    210,100,000    58,500,000    1,176,500,000 
        deferred charges and other assets
                                                 118,700,000     331,400,000    433,300,000     
        total deferred charges and other assets
                                           6,469,100,000 6,497,500,000 6,439,200,000  6,706,100,000 6,638,600,000  1,872,900,000            1,460,700,000 
        capitalization and liabilities
                                                               
        capitalization
                                                               
        common stock – .01 par value...
                                           3,200,000 3,200,000 3,200,000                  
        total capitalization
                                           18,010,000,000 17,766,000,000 17,804,500,000  17,438,400,000 17,085,800,000               
        total current liabilities
                                           2,025,500,000 2,137,100,000 2,229,800,000 521,700,000 2,666,800,000 2,940,300,000 139,600,000     242,300,000    610,600,000     
        deferred credits and other liabilities
                                                               
        environmental remediation
                                           608,300,000 617,900,000 617,600,000  611,500,000                
        total deferred credits and other liabilities
                                           9,408,000,000 9,272,200,000 9,070,300,000  8,664,400,000 8,588,400,000               
        total capitalization and liabilities
                                           29,443,500,000 29,175,300,000 29,104,600,000  28,769,600,000 28,614,500,000               
        09/30/2016 form 10-q
                                                               
        accounts receivable and unbilled revenues, net of reserves of 109.4 and 113.3, respectively
                                            914,900,000                   
        06/30/2016 form 10-q
                                                               
        accounts receivable and unbilled revenues, net of reserves of 114.3 and 113.3, respectively
                                             1,088,100,000                  
        pension and other postretirement benefit obligations
                                             541,100,000  427,700,000                
        03/31/2016 form 10-q
                                                               
        accounts receivable from related parties
                                              13,200,000                 
        notes receivable from related parties
                                              123,200,000                 
        prepaid taxes and other
                                              2,200,000   264,200,000     176,300,000    2,200,000     
        investments in subsidiaries
                                              10,792,600,000                 
        other long-term assets
                                              254,000,000 511,500,000 455,700,000               
        total long-term assets
                                              11,046,600,000                 
        accounts payable to related parties
                                              1,700,000                 
        notes payable to related parties
                                              119,000,000                 
        other long-term liabilities
                                              122,800,000 1,034,400,000 1,626,900,000 122,200,000     134,200,000    133,800,000     
        total long-term liabilities
                                              2,010,000,000                 
        shareholders' equity
                                              8,654,800,000                 
        total liabilities and shareholders' equity
                                              11,186,500,000                 
        property, plant and equipment
                                                               
        net property, plant and equipment
                                               18,785,200,000 18,529,400,000  10,906,600,000            5,903,100,000 
        accounts receivable and unbilled revenues, net of reserves of 128.7 and 74.5, respectively
                                               844,700,000                
        common stock - .01 par value...
                                               3,200,000                
        preferred stock of subsidiaries
                                               81,500,000 81,500,000               
        condensed consolidated statements of cash flows
                                                               
        operating activities
                                                               
        net income
                                               459,200,000                
        reconciliation to cash from operating activities
                                                               
        depreciation and amortization
                                               390,900,000                
        deferred income taxes and investment tax credits
                                               220,100,000                
        contributions to pension and other postretirement plans
                                               -109,300,000                
        change in –
                                                               
        accounts receivable and unbilled revenues
                                               269,500,000                
        inventories
                                               -101,400,000                
        other current assets
                                               75,600,000                
        other current liabilities
                                               40,000,000                
        net cash from operating activities
                                               1,073,200,000                
        investing activities
                                                               
        capital expenditures
                                               -765,100,000                
        cost of removal, net of salvage
                                               -26,700,000                
        business acquisition, net of cash acquired of 156.3 million
                                               -1,329,900,000                
        investment in transmission affiliate
                                               -5,600,000                
        proceeds from asset sales
                                               26,700,000                
        net cash from investing activities
                                               -2,095,900,000                
        financing activities
                                                               
        exercise of stock options
                                               26,400,000                
        purchase of common stock
                                               -66,100,000                
        dividends paid on common stock
                                               -310,900,000                
        issuance of long-term debt
                                               1,650,000,000                
        retirement of long-term debt
                                               -27,100,000                
        change in short-term debt
                                               -270,500,000                
        net cash from financing activities
                                               983,000,000                
        net change in cash and cash equivalents
                                               -39,700,000                
        cash and cash equivalents at beginning of period
                                               61,900,000                
        cash and cash equivalents at end of period
                                               22,200,000                
        accounts receivable
                                                667,500,000              349,300,000 
        accrued revenues
                                                289,100,000  321,100,000            245,100,000 
        materials, supplies and inventories
                                                562,500,000  329,400,000            409,500,000 
        current deferred tax asset
                                                236,400,000  310,000,000             
        prepayments and other
                                                306,900,000              132,100,000 
        common equity
                                                8,456,700,000               
        long-term debt due currently
                                                608,400,000               
        deferred income taxes - long-term
                                                4,624,300,000               
        pension and other benefit obligations
                                                428,000,000               
        the accompanying notes to consolidated condensed financial statements are an integral part of these financial statements.
                                                               
        june 2015
                                                10,000,000               
        accounts and notes receivable
                                                 37,800,000     32,900,000    55,800,000     
        property and investments
                                                               
        investment in subsidiary companies
                                                 4,917,800,000     4,662,300,000    4,906,900,000     
        total property and investments
                                                 4,919,300,000     4,664,400,000    4,909,500,000     
        notes payable due associated companies
                                                 117,200,000     140,600,000    136,800,000     
        accrued taxes and other
                                                 22,400,000     34,700,000    327,300,000     
        stockholder's equity
                                                 4,419,700,000     4,135,100,000    3,963,300,000     
        see accompanying notes to condensed parent company financial statements.
                                                               
        doubtful accounts of 61.0 and 58.0
                                                  406,000,000             
        the accompanying notes to consolidated financial statements are an integral part of these financial statements.
                                                               
        assets:
                                                               
        restricted cash
                                                   2,700,000 2,700,000 2,700,000  9,500,000 17,900,000 24,700,000  45,500,000 45,500,000 45,500,000  
        derivatives
                                                   2,440,000 1,180,000 7,030,000  11,012,000 2,712,000 912,000  530,000 3,960,000 8,090,000  
        total
                                                   2,440,000 1,180,000 7,030,000  20,512,000 20,612,000 25,612,000  46,030,000 49,460,000 53,590,000  
        liabilities:
                                                               
        recurring fair value measures
                                                               
        march 2012
                                                               
        nuclear fuel
                                                              85,000,000 
        nuclear decommissioning trust fund
                                                              737,800,000 
        deferred income taxes - current
                                                              4,900,000 
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 
                                                                     
          operating activities
                                                                     
          net income
        806,100,000 316,800,000 270,200,000 243,000,000 725,500,000 453,100,000 238,600,000 210,000,000 622,600,000 218,500,000 315,600,000 290,000,000 507,600,000 252,200,000 301,700,000 287,800,000 568,000,000 223,800,000 288,700,000 275,700,000 510,300,000 239,600,000 267,100,000 242,100,000 452,600,000 244,200,000 234,300,000 235,800,000 420,400,000 205,300,000 233,500,000 231,300,000 390,400,000 432,900,000 215,700,000 199,400,000 356,900,000 194,700,000 217,300,000 181,700,000 346,500,000 181,100,000 182,500,000 80,900,000 195,800,000 121,400,000 126,300,000 133,000,000 207,600,000 144,300,000 137,500,000 119,000,000 176,600,000 98,800,000 156,100,000 119,300,000 172,100,000 116,000,000 129,800,000 109,500,000 170,900,000 
          reconciliation to cash from operating activities
                                                                     
          depreciation and amortization
        379,800,000 376,300,000 373,400,000 368,900,000 359,900,000 344,000,000 340,500,000 336,600,000 333,400,000 324,500,000 320,300,000 313,900,000 305,500,000 284,600,000 280,300,000 279,600,000 278,100,000 275,100,000 271,600,000 266,200,000 261,400,000 249,300,000 245,000,000 242,500,000 239,100,000 236,200,000 233,800,000 229,900,000 226,400,000 217,700,000 212,800,000 206,700,000 208,600,000 205,100,000 201,200,000 197,700,000 194,600,000 181,100,000 195,500,000 194,100,000 191,900,000 192,600,000 174,100,000 108,600,000 108,200,000 106,500,000 106,400,000 102,800,000 103,700,000 102,600,000 99,900,000 99,500,000 98,200,000 93,500,000 94,400,000 93,200,000 90,600,000 87,500,000 79,700,000 85,000,000 84,200,000 
          deferred income taxes and itcs
        27,800,000 72,300,000 76,200,000 164,400,000 55,600,000 160,700,000 46,800,000 137,200,000 184,300,000 63,500,000 42,500,000 56,900,000 56,500,000 92,300,000 24,600,000 59,400,000 103,800,000 -6,900,000 -6,400,000 34,800,000 129,600,000                                         
          contributions and payments related to pension and opeb plans
        -3,800,000 -3,400,000 -3,200,000 -3,200,000 -3,900,000 -3,500,000 -3,500,000 -3,500,000 -4,000,000 -3,700,000 -3,800,000 -3,700,000 -5,500,000 -3,500,000 -3,000,000 -5,000,000 -3,600,000 -55,000,000 -3,700,000 -3,500,000 -4,100,000 -103,100,000 -3,500,000 -2,900,000 -3,700,000 -53,800,000 -3,800,000 -4,100,000 -4,200,000 -63,800,000 -4,100,000 -4,400,000 -5,300,000 -5,100,000 -3,900,000 -5,500,000 -106,000,000 -5,200,000 -4,000,000 -4,400,000 -15,100,000                     
          equity income in transmission affiliates, net of distributions
        -13,300,000 -11,700,000 -14,100,000 -5,600,000 2,200,000 -28,100,000 -9,700,000 -10,500,000 -9,100,000 -9,900,000 -9,700,000 -7,000,000 -6,400,000 -27,200,000 -29,600,000 -9,800,000 -7,700,000 1,900,000 -9,300,000 -8,500,000 -9,200,000 -8,800,000 -200,000   14,900,000 -8,400,000 -7,500,000 -1,900,000 -14,100,000 -9,400,000 -2,200,000 7,100,000                             
          change in –
                                                                     
          accounts receivable and unbilled revenues
        77,900,000 -779,800,000 231,600,000 316,700,000 -180,300,000 -485,500,000 69,800,000 315,500,000 -61,300,000 -260,100,000 71,200,000 468,800,000 60,700,000 -493,000,000 114,600,000 210,600,000 -174,300,000 -411,600,000 92,400,000 220,400,000 -150,400,000 -246,200,000 46,900,000 218,900,000 -3,500,000 -262,000,000 92,300,000 392,200,000 -124,300,000 -288,600,000 76,600,000 295,600,000 -60,100,000 -396,900,000 63,200,000 192,300,000 55,000,000 -365,900,000 55,100,000 178,700,000 -48,600,000 -185,500,000                    
          materials, supplies, and inventories
        191,100,000 39,200,000 -139,600,000 -127,000,000 237,200,000 -23,300,000 -94,100,000 -87,200,000 166,600,000 -25,300,000 -146,100,000 -80,300,000 293,600,000 117,500,000 -352,400,000 -203,400,000 267,000,000 9,900,000 -193,000,000 -99,200,000 175,100,000 44,800,000 -105,700,000 -76,600,000 158,700,000 43,400,000 -131,900,000 -131,300,000 218,300,000 60,200,000 -141,600,000 -90,400,000 163,000,000 133,400,000 -162,000,000 -92,600,000 170,500,000 66,200,000 -159,700,000 -23,700,000 217,200,000                     
          other current assets
        -10,200,000 -21,700,000 -32,300,000 52,400,000 13,000,000 -157,200,000 62,700,000 -600,000 19,700,000 -45,800,000 48,500,000 -24,400,000 40,600,000 -26,200,000 -6,000,000 3,400,000 1,100,000 8,400,000 21,600,000 -28,000,000 20,200,000 -23,800,000 -25,300,000 -2,900,000 65,400,000 -117,500,000 90,400,000 -105,100,000 125,100,000 -122,700,000 33,900,000 -2,500,000 81,300,000 -63,900,000 42,300,000 -25,600,000 41,200,000 14,600,000 21,800,000 130,400,000 -63,700,000 -102,800,000 58,900,000 -27,800,000 44,500,000 -51,100,000 25,400,000 -17,100,000 28,900,000 -37,800,000 26,800,000 -14,400,000 28,200,000 -38,500,000 33,900,000 -13,100,000 29,800,000 -1,800,000 -28,900,000 -22,800,000 33,000,000 
          accounts payable
        -201,000,000 191,700,000 26,800,000 23,300,000 -195,400,000 251,400,000 -61,400,000 139,500,000 -229,800,000 96,600,000 37,800,000 36,300,000 -424,700,000 39,300,000 80,700,000 295,300,000 -293,800,000 142,000,000 104,200,000 62,200,000 -181,500,000 117,600,000 9,400,000 61,800,000 -250,100,000 193,800,000 30,400,000 -18,400,000 -204,300,000 181,800,000 13,800,000 85,900,000 -170,900,000 119,700,000 2,800,000 98,700,000 -212,700,000 129,100,000 17,700,000 11,300,000 -123,700,000 46,600,000 -83,300,000 98,700,000 -71,300,000 51,400,000 24,900,000 -147,300,000 94,700,000 44,400,000 27,400,000 17,900,000 -104,500,000 100,300,000 3,700,000 22,100,000 -82,300,000 53,600,000 -3,100,000 9,700,000 -48,400,000 
          accrued interest
        102,800,000    83,500,000                                                         
          other current liabilities
        -47,900,000 79,400,000 13,500,000 -12,000,000 5,600,000 86,800,000 -22,100,000 -8,300,000 -44,800,000 -4,800,000 94,200,000 -61,800,000 19,900,000 58,400,000 -59,900,000 -161,100,000 289,500,000 -124,700,000 90,300,000 19,500,000 -2,300,000 -17,900,000 43,900,000 -39,500,000 -27,700,000 80,500,000 53,300,000 -109,700,000 54,600,000 -110,100,000 42,400,000 -128,500,000 128,600,000 138,400,000 5,100,000 -72,500,000 90,800,000 72,100,000 -5,200,000 -54,800,000 -32,900,000 -61,600,000 41,200,000 -29,300,000 28,100,000 18,000,000 -15,200,000 11,900,000 -33,500,000 7,300,000 2,800,000 -38,500,000 35,600,000 400,000 12,200,000 -42,700,000 15,200,000 17,000,000 15,700,000 -50,200,000 61,600,000 
          other
        -90,900,000 132,400,000 -53,200,000 22,900,000 -8,900,000 -29,400,000 72,900,000 52,900,000 -131,200,000 -44,300,000 -23,100,000 -36,600,000 -52,500,000 11,600,000 -64,100,000 -82,800,000 -34,200,000 -6,300,000 -17,800,000 -1,700,000 -67,200,000 30,200,000 -8,800,000 14,400,000 -32,400,000 21,000,000 -3,600,000 -5,200,000 8,400,000 108,700,000 34,200,000 13,200,000 134,300,000 -71,700,000 -51,500,000 -55,100,000 -19,200,000 51,400,000 -11,300,000 -37,400,000 -56,500,000 -46,700,000 -114,000,000 -800,000 -58,600,000 25,200,000 -39,400,000 -58,900,000 -39,000,000 67,300,000 -30,600,000 14,900,000 -2,400,000 -36,100,000 -42,300,000 -35,400,000 -50,200,000 -40,900,000 12,400,000 -39,100,000 40,600,000 
          net cash from operating activities
        1,218,400,000 424,600,000 938,900,000 853,300,000 1,162,600,000 581,800,000 729,000,000 1,037,400,000 863,600,000 480,000,000 784,100,000 958,200,000 796,100,000 1,200,000 296,900,000 685,800,000 1,076,800,000 26,000,000 780,500,000 831,000,000 395,200,000 246,300,000 570,100,000 689,100,000 690,500,000 504,800,000 549,500,000 555,500,000 735,700,000 437,300,000 494,800,000 619,400,000 894,000,000 332,900,000 478,700,000 553,400,000 714,600,000 381,600,000 497,800,000 528,200,000 695,900,000 220,400,000                    
          investing activities
                                                                     
          capital expenditures
        -817,900,000 -1,303,000,000 -1,564,600,000 -829,400,000 -701,100,000 -846,400,000 -796,300,000 -693,900,000 -444,500,000 -763,400,000 -655,800,000 -574,300,000 -499,400,000 -614,200,000 -671,900,000 -645,300,000 -383,500,000 -624,900,000 -617,800,000 -539,500,000 -470,600,000 -620,100,000 -581,500,000 -541,100,000 -496,100,000 -749,300,000 -656,300,000 -496,400,000 -358,800,000 -625,200,000 -575,000,000 -475,900,000 -439,600,000 -650,300,000 -519,200,000 -460,300,000 -329,700,000 -423,600,000 -381,400,000 -306,700,000 -312,000,000 -501,100,000                    
          free cash flows
        400,500,000 -878,400,000 -625,700,000 23,900,000 461,500,000 -264,600,000 -67,300,000 343,500,000 419,100,000 -283,400,000 128,300,000 383,900,000 296,700,000 -613,000,000 -375,000,000 40,500,000 693,300,000 -598,900,000 162,700,000 291,500,000 -75,400,000 -373,800,000 -11,400,000 148,000,000 194,400,000 -244,500,000 -106,800,000 59,100,000 376,900,000 -187,900,000 -80,200,000 143,500,000 454,400,000 -317,400,000 -40,500,000 93,100,000 384,900,000 -42,000,000 116,400,000 221,500,000 383,900,000 -280,700,000                    
          acquisition of hardin iii, net of cash acquired of 0.2
         -406,100,000                                                         
          capital contributions to transmission affiliates
        -75,800,000 -54,600,000 -45,500,000 -42,300,000 -15,200,000 -18,200,000 -12,100,000 -12,200,000 -18,200,000 -27,200,000 -6,100,000 -6,100,000 -9,100,000 -9,200,000 -21,100,000     -6,000,000 -6,200,000 -6,000,000 -3,000,000 -15,300,000 -15,400,000 -18,500,000 -3,400,000 -9,800,000 -11,300,000 -19,600,000 -12,800,000                             
          proceeds from the sale of assets
        21,700,000     500,000 300,000   2,400,000 25,800,000 4,600,000 4,000,000 55,300,000 9,700,000  800,000 9,500,000 11,300,000    1,300,000    10,600,000                                 
          reimbursement for atc's transmission infrastructure upgrades
         100,000 39,700,000                                                         
          net cash from investing activities
        -886,400,000 -1,304,200,000 -1,597,700,000 -871,000,000 -1,101,800,000 -1,749,300,000 -802,400,000 -814,600,000 -436,200,000 -786,500,000 -670,300,000 -833,500,000 -1,267,900,000 -656,500,000 -1,048,400,000 -599,300,000 -338,200,000 -623,100,000 -614,100,000 -533,300,000 -541,300,000 -1,243,700,000 -556,900,000 -543,200,000 -463,000,000 -760,400,000 -668,100,000 -459,800,000 -606,600,000 -664,400,000 -723,200,000 -561,000,000 -435,800,000 -687,600,000 -528,100,000 -698,300,000 -325,600,000 -428,500,000 -392,500,000 -260,700,000 -188,400,000 -421,600,000                    
          financing activities
                                                                     
          exercise of stock options
        7,400,000 1,500,000 12,900,000 3,500,000 21,200,000 10,300,000 8,700,000 1,000,000 3,700,000 3,300,000 700,000 1,400,000 900,000 500,000 10,100,000 11,200,000 11,800,000 9,200,000 2,500,000 2,800,000 1,200,000 20,500,000 3,000,000 4,300,000 16,000,000 900,000 16,000,000 17,500,000 32,600,000 15,200,000 8,800,000 3,000,000 2,100,000 5,200,000 10,000,000 9,700,000 5,900,000 1,200,000 5,400,000 13,600,000 21,400,000 3,700,000 14,200,000 3,800,000 8,400,000 18,600,000 14,100,000 2,400,000 15,200,000 5,800,000 2,000,000 13,400,000 27,300,000 4,500,000 6,700,000 25,700,000 12,900,000 20,000,000 4,800,000 16,600,000 13,000,000 
          issuance of common stock
        12,800,000 15,300,000 347,800,000 281,700,000 117,100,000 112,400,000 12,800,000 19,000,000 19,200,000                                                     
          dividends paid on common stock
        -310,100,000 -290,400,000 -288,700,000 -285,100,000 -283,600,000 -265,000,000 -264,000,000 -263,700,000 -263,500,000 -246,100,000 -246,000,000 -246,000,000 -246,100,000 -229,400,000 -229,500,000 -229,400,000 -229,600,000 -213,600,000 -213,700,000 -213,800,000 -213,700,000 -199,500,000 -199,500,000 -199,500,000 -199,500,000 -186,100,000 -186,100,000 -186,100,000 -186,200,000 -174,300,000 -174,300,000 -174,500,000 -174,200,000 -164,100,000 -164,100,000 -164,200,000 -164,100,000 -156,300,000 -156,200,000 -156,200,000 -156,200,000 -144,500,000 -120,400,000 -95,200,000 -95,300,000 -88,000,000 -88,000,000 -87,900,000 -88,100,000 -86,600,000 -86,700,000 -77,800,000 -77,800,000 -68,900,000 -69,100,000 -69,200,000 -69,100,000 -60,000,000 -60,500,000 -60,700,000 -60,800,000 
          issuance of long-term debt
        1,005,200,000 899,900,000 919,600,000   1,788,500,000 598,200,000   120,000,000 600,000,000 350,000,000 1,100,000,000 599,300,000    1,365,000,000 418,800,000 600,000,000 1,563,600,000 700,000,000   575,000,000 970,000,000 350,000,000 1,140,000,000   225,000,000   200,000,000    500,000,000 200,000,000     1,000,000       300,000,000 420,000,000 
          retirement of long-term debt
        -1,118,900,000 -443,000,000 -718,300,000 -549,700,000 -17,900,000 -1,300,500,000 -52,100,000 -28,500,000 -756,900,000 -9,400,000 -919,200,000 -41,600,000 -35,200,000 -27,200,000 -15,800,000 -33,700,000 -15,400,000 -904,200,000 -15,000,000 -326,500,000 -14,700,000 -1,284,400,000 -64,400,000 -404,200,000 -14,000,000 -254,100,000 -88,700,000 -4,000,000 -13,300,000 -258,900,000 -13,000,000 -668,800,000 -12,600,000 -127,600,000 -12,300,000 -2,600,000 -12,000,000 -52,500,000 -11,700,000 -102,400,000 -139,400,000 -502,500,000 -15,500,000 -2,300,000 -9,300,000 -2,300,000 -10,900,000 -302,200,000 -8,900,000 -33,000,000 -53,700,000 -302,000,000 -8,500,000         
          change in commercial paper
        119,200,000 665,200,000 449,700,000 -517,500,000 209,500,000 522,000,000 -164,400,000 -1,813,200,000 552,800,000 471,900,000 458,400,000 -171,200,000 -385,400,000 387,600,000                                                
          net cash from financing activities
        -295,600,000 832,800,000 707,300,000 -56,500,000 40,400,000 848,700,000 131,500,000 -36,000,000 -476,500,000 330,300,000 -112,500,000 -112,600,000 417,600,000 721,500,000 762,600,000 -101,200,000 -706,500,000 575,400,000 -156,900,000 -287,600,000 163,100,000 1,008,800,000 -14,400,000 -149,200,000 -244,100,000 271,300,000 94,500,000 -94,100,000 -186,100,000 333,000,000 216,600,000 -78,100,000 -445,100,000 375,500,000 31,000,000 135,700,000 -380,800,000 59,400,000 -112,400,000 -270,100,000 -522,600,000 228,800,000                    
          net change in cash, cash equivalents, and restricted cash
        36,400,000 -46,800,000 48,500,000 -74,200,000 101,200,000 -318,800,000 58,100,000 186,800,000 -49,100,000 23,800,000 1,300,000 12,100,000 -54,200,000 66,200,000 11,100,000 -14,700,000 32,100,000 -21,700,000 9,500,000 10,100,000 17,000,000 11,400,000 -1,200,000 -3,300,000 -16,600,000 15,700,000 -24,100,000 1,600,000 -57,000,000 105,900,000 -11,800,000 -19,700,000 13,100,000                             
          cash, cash equivalents, and restricted cash at beginning of period
        70,900,000  42,200,000  165,200,000  182,200,000  87,500,000  72,600,000  82,300,000  146,100,000  58,600,000                             
          cash, cash equivalents, and restricted cash at end of period
        107,300,000  48,500,000 -74,200,000 143,400,000  58,100,000 186,800,000 116,100,000  1,300,000 12,100,000 128,000,000  11,100,000 -14,700,000 119,600,000  9,500,000 10,100,000 89,600,000  -1,200,000 -3,300,000 65,700,000  -24,100,000 1,600,000 89,100,000  -11,800,000 -19,700,000 71,700,000                             
          impairments related to illinois segment
                                                                     
          prepaid taxes
         -53,300,000           48,800,000  68,700,000                                               
          collateral on deposit
         1,600,000    36,600,000 300,000 30,200,000 17,200,000   62,900,000 -91,800,000                                                 
          amounts refundable to customers
                                                                     
          acquisition of delilah i, net of cash acquired of 0.6
                                                                     
          acquisition of maple flats, net of cash acquired of 0.5
                                                                     
          acquisition of west riverside
             300,000                                                     
          acquisition of red barn
                                                                   
          acquisition of whitewater
                 -76,000,000                                                 
          acquisition of sapphire sky, net of cash acquired of 0.3
                 -442,600,000                                                 
          acquisition of samson i, net of cash acquired of 5.2
                 -7,900,000 -249,400,000                                                 
          purchase of common stock
         -1,300,000 -1,200,000 -2,000,000 -5,900,000 -1,200,000 -2,600,000 -6,900,000 -900,000 -19,900,000 -25,000,000 -23,400,000 -17,400,000 -4,400,000 -4,700,000 -6,600,000 -42,500,000 -6,400,000 -9,900,000 -40,400,000 -1,900,000 -31,900,000 -35,600,000 -70,700,000 -30,400,000 -22,200,000 -4,000,000 -15,800,000 -10,700,000 -20,900,000 -19,500,000 -20,200,000 -2,400,000 -11,400,000 -34,600,000 -59,600,000 -8,600,000 -34,100,000 -8,600,000 -23,400,000 -39,000,000 -26,900,000 -4,700,000 -52,600,000 -35,500,000 -52,200,000 -69,200,000 -66,500,000 -48,200,000 -28,000,000 -47,800,000 -29,200,000 -58,800,000 -83,500,000 -26,700,000 -24,900,000 
          purchase of additional ownership interest in samson i from noncontrolling interest
             -28,100,000                                                     
          payments for debt extinguishment and issuance costs
         -11,000,000 -12,200,000   -15,200,000 -7,100,000                                                       
          cash, cash equivalents, and restricted cash at beginning of year
                                                                     
          cash, cash equivalents, and restricted cash at end of year
                                                                     
          proceeds from the sale of investments held in rabbi trust
          16,900,000  14,800,000 10,400,000 15,400,000 6,000,000 12,700,000 39,100,000 100,000 17,000,000 100,000 100,000 102,000,000 100,000 16,500,000                             
          customer credit balances
                                                                     
          temporary lifo liquidation credit
            68,600,000       -41,700,000 43,800,000                                                 
          impairment related to icc disallowances
                                                                     
          net change in transmission regulatory assets and liabilities
                                                                     
          net loss on disposition of assets
                                                                     
          acquisition of thunderhead, net of cash acquired of 0.5
                     -19,100,000                                                
          insurance proceeds received for property damage
                 2,000,000    300,000 300,000 41,000,000     1,000,000                                        
          amounts recoverable from customers
              -17,200,000       44,700,000 47,200,000 -42,200,000 10,300,000 37,100,000 74,200,000 93,100,000 -286,700,000                                         
          payments for atc's construction costs that will be reimbursed
              -100,000   -300,000 -400,000   -4,200,000                                                
          net gain on disposition of assets
                                                                     
          acquisition of jayhawk
                         -100,000 -100,000 -300,000 -119,400,000                                         
          reimbursement for atc's construction costs
                                                                   
          repayment of short-term loan
                         -340,000,000                                         
          payments for debt issuance costs
                  -3,400,000 -2,600,000 -7,000,000                                                 
          collateral received
                                                                     
          acquisition of blooming grove, net of restricted cash acquired of 24.1
                                                                     
          acquisition of tatanka ridge
                                                                     
          acquisition of intangible assets
                                                                     
          purchase of investments held in rabbi trust
                                                                     
          issuance of short-term loan
                       500,000 900,000 400,000    340,000,000                                     
          purchase of additional ownership interest in upstream from noncontrolling interest
                                                                   
          other prepayments
                      1,700,000                                               
          change in other short-term debt
                       178,600,000 -447,900,000 387,700,000 83,900,000 -155,900,000 143,500,000 1,005,900,000 -440,500,000 384,300,000 -343,600,000                                     
          prepayments
                        72,600,000                                             
          acquisition of upstream, net of cash and restricted cash acquired of 9.2
                                 -268,200,000                                 
          proceeds from the sale of assets and businesses
                             10,500,000 7,700,000   5,400,000 2,200,000   1,200,000 3,000,000 7,100,000 800,000 1,300,000 2,000,000 7,600,000 13,100,000 5,100,000 200,000                       
          acquisition of bishop hill iii, net of restricted cash acquired of 4.5
                                     -19,400,000                                
          acquisition of forward wind energy center
                                                                   
          acquisition of coyote ridge
                                                                     
          deferred income taxes and investment tax credits
                              9,000,000 51,400,000 92,100,000 104,100,000 -37,300,000 78,900,000 17,200,000 262,900,000 2,700,000 14,700,000 17,000,000 -172,700,000 169,800,000 124,400,000 150,200,000 54,300,000 132,400,000 92,500,000 214,600,000 198,600,000 98,400,000 15,100,000 106,600,000 69,600,000 70,500,000 76,400,000 111,600,000 92,900,000 76,700,000 100,300,000 42,800,000 102,600,000 108,400,000 73,300,000 67,900,000 214,700,000 78,900,000 65,100,000 71,900,000 
          proceeds from cash surrender value of life insurance
                              8,300,000                                     
          acquisition of bluewater
                                                                    
          change in short-term debt
                                 144,400,000 -576,300,000 117,500,000 -294,900,000 -348,200,000 418,300,000 169,700,000 -244,300,000 451,100,000 218,700,000 104,400,000 -189,800,000 70,800,000 -138,400,000 31,400,000 -198,600,000 433,500,000 -164,800,000 -51,100,000 -54,600,000 141,800,000 65,700,000 -12,100,000 -115,200,000 175,600,000 25,900,000 19,200,000 -77,900,000 -58,600,000 -106,300,000 2,200,000 -112,600,000 173,200,000 -45,700,000 260,900,000 -376,400,000 
          integrys acquisition, net of cash acquired of 156.3
                                                                     
          bluewater acquisition
                                                                     
          withdrawal of restricted cash from rabbi trust for qualifying payments
                                         800,000 1,500,000 1,100,000 16,100,000 2,800,000 1,300,000 1,500,000 21,000,000                     
          redemption of wps preferred stock
                                                                     
          net change in cash and cash equivalents
                                         20,800,000 -18,400,000 -9,200,000 8,200,000 12,500,000 -7,100,000 -2,600,000 -15,100,000 27,600,000                    
          cash and cash equivalents at beginning of year
                                                                     
          cash and cash equivalents at end of year
                                                                     
          equity income in transmission affiliate, net of distributions
                                          -4,000,000 -7,800,000 -6,700,000 -10,800,000 -13,100,000 700,000 -23,400,000                     
          capital contributions to transmission affiliate
                                          -12,800,000 -22,900,000 -27,600,000 -15,200,000                        
          cash and cash equivalents at beginning of period
                                          37,500,000  49,800,000  61,900,000  26,000,000  35,600,000  14,100,000  24,500,000 
          cash and cash equivalents at end of period
                                          -18,400,000 -9,200,000 45,700,000  -7,100,000 -2,600,000 34,700,000  -192,200,000 149,200,000 65,200,000  55,300,000 5,800,000 27,600,000  -2,500,000 -3,700,000 24,700,000  -100,000 -5,000,000 18,100,000  4,500,000 -225,400,000 236,000,000 
          business acquisition, net of cash acquired of 156.3
                                                                     
          accrued taxes
                                               -140,900,000 89,600,000 -22,200,000                    
          investment in transmission affiliate
                                               -3,100,000 -9,000,000 -3,100,000 -3,000,000 -1,300,000 -1,300,000 -2,600,000 -2,600,000 -4,000,000 -3,900,000 -2,600,000 -2,700,000 -3,900,000 -1,300,000 -2,600,000 -6,500,000 -4,000,000 -2,600,000 -2,000,000 -2,000,000 -2,600,000 
          proceeds from sale of businesses
                                                106,500,000                     
          contributions to pension and opeb plans
                                                                     
          proceeds from asset sales
                                                 2,200,000            5,700,000 200,000 100,000 2,700,000 3,000,000 200,000 38,300,000 
          proceeds from cashout of corporate owned life insurance policies
                                                                     
          contributions to pension and other postretirement plans
                                                                     
          inventories
                                                  -173,600,000 -38,700,000 110,900,000 -21,300,000 -75,000,000 -69,400,000 94,500,000 38,200,000 -49,700,000 -51,100,000 93,900,000 -18,600,000 -7,100,000 -23,400,000 70,400,000 -14,000,000 -28,900,000 -54,700,000 94,700,000 
          cost of removal, net of salvage
                                                     -6,900,000                
          business acquisition, net of cash acquired of 156.3 million
                                                  -500,000                   
          reconciliation to cash
                                                                     
          contributions to qualified benefit plans
                                                   -100,000,000            -20,000,000 -135,000,000 -122,400,000 
          change in - accounts receivable and accrued revenues
                                                   162,500,000 -28,000,000 -140,400,000 89,100,000 316,800,000 -184,800,000 -258,200,000 46,000,000 133,600,000 -84,300,000 -80,400,000 22,500,000 84,700,000 11,500,000 -106,300,000 45,300,000 132,000,000 -40,900,000 
          accrued income taxes
                                                   17,000,000 -6,500,000 -1,100,000 300,000 -12,000,000 1,400,000 -11,600,000 32,000,000 -30,000,000 46,200,000 -49,700,000 101,900,000 -9,800,000 15,500,000 -156,500,000 9,900,000 19,500,000 39,700,000 
          cash from operating activities
                                                   386,200,000 329,700,000 163,100,000 313,300,000 336,200,000 385,100,000 180,700,000 368,800,000 351,200,000 330,300,000 181,500,000 383,700,000 268,200,000 340,500,000 165,800,000 179,000,000 257,600,000 391,000,000 
          cash from investing activities
                                                   -1,522,900,000 -156,300,000 -227,900,000 -216,000,000 -173,800,000 -139,100,000 -201,000,000 -208,200,000 -191,300,000 -145,300,000 -238,200,000 -178,800,000 -182,200,000 -130,400,000 -242,200,000 -282,800,000 -223,100,000 -144,400,000 
          cash from financing activities
                                                   1,285,900,000 -170,100,000 38,000,000 -42,000,000 -156,600,000 -244,400,000 27,800,000 -163,100,000 -163,600,000 -195,900,000 79,300,000 -205,000,000 -91,000,000 -206,100,000 75,400,000 108,300,000 -259,900,000 -35,100,000 
          change in cash and cash equivalents
                                                   149,200,000 3,300,000 -26,800,000 55,300,000 5,800,000 1,600,000 7,500,000 -2,500,000 -3,700,000 -10,900,000 22,600,000 -100,000 -5,000,000 4,000,000 -1,000,000 4,500,000 -225,400,000 211,500,000 
          the accompanying notes to consolidated condensed financial statements are an integral part of these financial statements.
                                                                     
          deferred costs
                                                                 6,500,000 6,400,000 6,600,000 6,400,000 
          change in restricted cash
                                                         2,700,000 6,800,000 8,400,000 6,800,000 20,800,000 -37,200,000 
          the accompanying notes to consolidated financial statements are an integral part of these financial statements.
                                                                     
          amortization of gain
                                                                     
          deferred revenue
                                                                 600,000 100,000 2,800,000 
          retirement and repurchase of long-term debt
                                                             -2,000,000 -8,300,000 -2,000,000 -8,000,000 -1,900,000 -7,800,000 -451,900,000 -5,000,000 
          equity in earnings of transmission affiliate
                                                                  -15,700,000 -15,200,000 -15,500,000 
          distributions from transmission affiliate
                                                                  12,400,000 12,200,000 12,400,000 
          income from discontinued operations, net of tax
                                                                     
          depreciation, decommissioning and amortization
                                                                     
          nuclear fuel expense amortization
                                                                     
          equity in earnings of unconsolidated affiliates
                                                                     
          distribution from unconsolidated affiliates
                                                                     
          asset valuation charges
                                                                     
          other accounts receivable
                                                                     
          acquisitions and investments
                                                                     
          nuclear fuel
                                                                     
          nuclear decommissioning funding
                                                                     
          cash from/(to) discontinued operations
                                                                     
          issuance of common stock and exercise of stock options
                                                                     
          repurchase of common stock
                                                                     
          retirement and redemption of long-term debt
                                                                     
          change in cash and cash equivalents from continuing operations
                                                                     
          supplemental information - cash paid for
                                                                     
          interest
                                                                     
          income taxes