7Baggers
Quarterly
Annual
    Unit: USD2025-09-30 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 2013-03-31 2012-09-30 2012-06-30 2011-12-31 2011-09-30 2011-03-31 2010-03-31 2009-09-30 2009-06-30 2008-12-31 2008-09-30 2008-03-31 2007-12-31 
      
                                                                  
      assets
                                                                  
      current assets:
                                                                  
      cash and cash equivalents
    21,100,000 8,100,000 6,600,000 16,100,000 12,500,000 624,800,000 123,000,000 86,600,000 594,289,000 152,581,000 39,365,000 21,430,000 11,693,000 10,216,000 16,330,000 8,921,000 10,181,000 1,175,000 13,442,000 6,356,000 6,955,000 31,608,000 54,137,000 9,777,000 13,087,000 6,642,000 12,225,000 20,776,000 10,001,000 8,630,000 30,947,000 15,420,000 13,510,000 11,590,000 11,353,000 13,580,000 62,964,000 116,805,000 46,974,000 456,535,000 38,841,000 87,210,000 63,385,000 21,218,000 11,939,000 14,697,000 17,641,000 7,841,000 13,637,000 12,397,000 247,192,000 40,110,000 21,628,000 74,779,000 44,016,000 136,023,000 137,681,000 122,351,000 168,491,000 152,457,000 75,605,000 80,960,000 
      restricted cash and equivalents
    8,000,000 7,700,000 7,500,000 7,300,000 7,100,000 6,900,000 6,700,000 6,400,000 6,213,000 5,966,000 5,765,000 5,555,000 5,399,000 5,146,000 5,017,000 4,889,000 4,753,000 4,559,000 4,483,000 4,383,000 4,257,000 4,105,000 4,027,000 3,881,000    3,369,000    2,820,000 2,683,000 2,534,000 2,409,000 2,274,000 2,140,000 1,975,000 1,839,000 1,697,000 2,462,000 2,316,000 2,191,000 2,056,000 1,918,000 2,000 2,000 2,000 6,782,000 6,846,000 7,302,000 4,772,000           
      accounts receivable
    251,400,000 260,800,000 377,900,000 351,200,000 205,400,000 221,500,000 334,400,000 350,300,000 228,830,000 260,350,000 477,089,000 508,192,000 249,747,000 267,103,000 383,790,000 321,652,000 181,956,000 189,437,000 282,382,000 265,961,000 160,478,000 170,980,000 238,903,000 255,805,000 148,989,000 166,513,000 282,602,000 269,153,000 152,796,000 175,612,000 257,772,000 248,330,000 153,832,000 169,957,000 224,714,000 263,289,000 154,617,000 150,227,000 206,276,000 147,486,000 115,502,000 123,661,000 178,421,000 189,992,000 123,399,000 135,145,000 203,625,000 177,573,000 114,137,000 168,783,000 104,482,000 109,157,000 156,774,000 241,831,000 306,070,000        
      materials, supplies and fuel
    173,000,000 145,200,000 128,100,000 153,900,000 155,400,000 134,800,000 130,600,000 160,900,000 168,079,000 136,534,000 129,960,000 207,421,000 223,162,000 152,864,000 108,232,000 150,979,000 145,743,000 114,089,000 102,603,000 117,400,000 126,358,000 105,987,000 92,894,000 117,172,000 123,002,000 102,830,000 87,676,000 117,299,000 122,618,000 95,454,000 82,045,000 113,283,000 126,520,000 99,126,000 84,484,000 107,210,000 113,475,000 85,189,000 78,176,000 86,943,000 90,349,000 73,749,000 66,626,000 91,191,000 105,726,000 81,164,000 66,187,000 88,478,000 95,230,000 64,189,000 80,900,000 61,455,000 84,064,000 134,463,000 69,341,000 91,111,000 99,952,000 88,672,000 118,021,000 173,734,000 87,937,000 95,968,000 
      income tax receivable
    21,000,000 20,900,000 19,700,000 19,800,000 19,900,000 19,800,000 18,200,000 18,500,000 17,749,000 18,222,000 17,772,000 17,637,000 17,112,000 17,299,000 17,991,000 18,017,000 17,472,000 17,573,000 18,115,000 19,446,000 20,828,000 20,118,000 22,319,000 16,446,000 12,931,000 13,547,000 15,309,000 12,978,000 11,025,000 11,653,000 13,900,000         368,000  770,000 159,000 2,053,000 1,268,000 1,043,000 1,826,000 1,460,000 4,539,000  11,869,000 12,141,000 9,344,000 10,958,000 23,665,000    20,269,000    
      regulatory assets, current
    138,200,000 132,100,000 129,300,000 154,800,000 156,100,000 142,900,000 147,300,000 175,700,000 191,746,000 198,443,000 214,838,000 260,312,000 290,087,000 267,725,000 265,496,000 270,290,000 213,031,000 218,628,000 129,951,000 51,676,000 49,493,000 51,745,000 49,415,000 43,282,000 46,206,000 48,925,000 54,303,000 48,776,000 48,302,000 50,565,000 54,492,000 81,016,000 61,023,000 53,061,000 53,476,000 49,260,000 50,561,000 54,856,000 54,108,000 57,359,000 51,962,000 47,157,000 56,542,000 74,396,000 68,444,000 64,735,000 62,946,000 24,451,000 30,208,000 23,422,000 24,606,000 34,781,000 59,955,000 45,713,000 36,834,000 42,876,000       
      other current assets
    54,900,000 33,600,000 38,900,000 39,200,000 43,100,000 22,900,000 37,400,000 28,200,000 33,242,000 29,929,000 33,376,000 50,579,000 48,180,000 39,358,000 45,070,000 29,012,000 42,274,000 22,353,000 25,722,000 26,221,000 33,287,000 27,981,000 26,198,000 26,479,000 29,106,000 27,209,000 28,029,000 29,982,000 32,691,000 31,431,000 24,972,000 25,367,000 26,793,000 21,840,000 23,425,000 27,063,000 30,032,000 30,652,000 34,287,000 71,763,000 55,383,000 51,315,000 47,448,000 24,842,000 26,502,000 21,660,000 24,563,000 25,877,000 27,075,000 28,260,000 44,823,000 26,591,000 21,266,000 65,889,000 60,804,000 26,189,000 31,565,000 31,917,000 16,380,000   14,569,000 
      total current assets
    667,600,000 608,400,000 708,100,000 742,300,000 599,500,000 1,173,600,000 797,600,000 826,600,000 1,240,274,000 802,328,000 918,318,000 1,071,708,000 849,248,000 760,427,000 849,308,000 808,133,000 627,726,000 571,739,000 578,615,000 493,291,000 403,657,000 414,105,000 489,673,000 473,184,000 377,421,000 369,673,000 484,570,000 503,833,000 384,920,000 380,652,000 492,105,000 570,782,000 385,018,000 359,256,000 401,402,000 466,814,000 418,171,000 443,734,000 423,146,000 822,151,000 402,282,000 438,572,000 438,685,000 454,036,000 373,952,000 344,055,000 404,416,000 345,288,000 328,897,000 343,723,000 570,918,000 336,003,000 758,921,000 666,068,000 611,793,000 625,986,000       
      property, plant and equipment
    10,104,200,000 9,894,500,000 9,714,600,000 9,566,500,000 9,383,000,000 9,238,100,000 9,068,400,000 8,917,200,000 8,767,954,000 8,590,796,000 8,466,173,000 8,374,790,000 8,236,053,000 8,086,704,000 7,927,840,000 7,856,573,000 7,697,880,000 7,558,204,000 7,415,818,000 7,305,530,000 7,128,387,000 6,954,274,000 6,808,261,000 6,784,679,000 6,567,229,000 6,317,112,000 6,127,050,000 6,000,015,000 5,819,000,000 5,702,065,000 5,608,539,000 5,567,518,000 6,615,098,000 6,533,581,000 6,436,610,000 6,412,223,000 6,306,119,000 6,209,816,000 6,063,943,000 4,976,778,000 4,882,420,000 4,726,478,000 4,652,058,000 4,563,400,000 4,493,696,000 4,408,291,000 4,318,194,000 4,259,445,000 4,152,097,000 3,977,704,000 3,950,222,000 3,863,380,000 3,724,016,000 3,664,967,000 3,461,559,000 3,045,126,000 2,891,102,000 2,819,510,000 2,705,492,000 2,615,627,000 2,564,259,000 2,490,565,000 
      less: accumulated depreciation
    -2,076,500,000 -2,034,100,000 -1,992,600,000  -1,913,400,000 -1,882,600,000 -1,845,300,000                                                        
      total property, plant and equipment
    8,027,700,000 7,860,400,000 7,722,000,000 7,629,900,000 7,469,600,000 7,355,500,000 7,223,100,000 7,119,300,000 7,012,348,000 6,919,493,000 6,837,401,000 6,797,948,000 6,697,322,000 6,587,152,000 6,473,415,000 6,449,176,000 6,317,576,000 6,196,751,000 6,095,293,000 6,019,714,000 5,851,977,000 5,703,199,000 5,584,282,000 5,503,186,000 5,323,435,000 5,092,512,000 4,939,938,000 4,854,879,000 4,700,217,000 4,614,376,000 4,559,606,000 4,541,430,000 4,594,767,000 4,551,701,000 4,493,072,000 4,468,989,000 4,465,003,000 4,389,930,000 4,321,873,000 3,259,094,000 3,264,697,000 3,203,509,000 3,300,201,000 3,239,375,000 3,155,187,000 3,082,631,000 3,019,796,000 2,990,297,000 2,893,647,000 2,766,871,000 2,696,414,000 2,856,553,000 2,789,575,000 2,730,855,000 2,572,528,000 2,214,703,000       
      other assets:
                                                                  
      goodwill
    1,299,500,000 1,299,500,000 1,299,500,000 1,299,500,000 1,299,500,000 1,299,500,000 1,299,500,000 1,299,500,000 1,299,454,000 1,299,454,000 1,299,454,000 1,299,454,000 1,299,454,000 1,299,454,000 1,299,454,000 1,299,454,000 1,299,454,000 1,299,454,000 1,299,454,000 1,299,454,000 1,299,454,000 1,299,454,000 1,299,454,000 1,299,454,000 1,299,454,000 1,299,454,000 1,299,454,000 1,299,454,000 1,299,454,000 1,299,454,000 1,299,454,000 1,299,454,000 1,299,454,000 1,299,454,000 1,299,454,000 1,299,454,000 1,300,379,000 1,303,453,000 1,306,169,000 359,759,000 359,527,000 353,396,000 353,396,000 353,396,000 353,396,000 353,396,000 353,396,000 353,396,000 353,396,000 353,396,000 353,396,000 353,396,000 353,396,000 354,831,000 354,831,000 353,734,000 353,734,000 359,288,000 359,290,000 400,959,000 40,501,000 29,577,000 
      intangible assets
    6,700,000 7,000,000 7,300,000 7,600,000 7,900,000 8,100,000 8,400,000 8,400,000 8,708,000 9,002,000 9,296,000 9,589,000 9,883,000 10,177,000 10,474,000 10,770,000 11,063,000 11,356,000 11,649,000 11,944,000 12,242,000 12,536,000 13,083,000 13,266,000 13,566,000 13,867,000 14,136,000 14,337,000 6,954,000 7,155,000 7,357,000 7,559,000 7,765,000 7,972,000 8,182,000 8,392,000 8,944,000 9,164,000 10,957,000 3,380,000 3,440,000 3,211,000 3,121,000 3,176,000 3,231,000 3,286,000 3,342,000 3,397,000 3,453,000 3,565,000 3,675,000 3,731,000 3,843,000 3,899,000 4,011,000 4,248,000 4,725,000 4,784,000 4,884,000   21,026,000 
      regulatory assets, non-current
    253,000,000 247,800,000 252,300,000 272,900,000 276,100,000 281,900,000 283,800,000 304,400,000 313,113,000 325,228,000 347,031,000 392,669,000 416,119,000 434,643,000 457,848,000 526,309,000 617,024,000 617,781,000 672,306,000 226,582,000 221,743,000 220,567,000 222,814,000 228,062,000 214,152,000 234,124,000 232,404,000 235,459,000 212,048,000 210,137,000 212,740,000 216,438,000 239,571,000 244,099,000 249,113,000 246,882,000 234,240,000 220,556,000 239,023,000 175,125,000 182,337,000 180,815,000 178,935,000 183,443,000 140,422,000 138,226,000 138,173,000 138,197,000 183,119,000 181,119,000 191,935,000 186,886,000 182,175,000 142,267,000 140,735,000 117,561,000       
      other assets, non-current
    74,500,000 68,500,000 72,000,000 70,400,000 66,100,000 67,300,000 64,300,000 62,200,000 59,031,000 53,590,000 48,636,000 46,862,000 50,268,000 42,709,000 40,155,000 38,054,000 37,547,000 40,971,000 38,882,000 37,801,000 24,318,000 24,633,000 24,258,000 19,376,000 25,339,000 30,552,000 25,823,000 14,352,000 17,143,000 17,207,000 14,800,000 10,149,000 11,655,000 13,812,000 11,905,000 12,130,000 12,800,000 15,438,000 11,274,000 20,566,000 22,131,000 28,670,000 28,280,000 29,086,000 29,930,000 31,808,000 28,925,000 27,906,000 22,116,000 21,367,000 19,850,000 19,733,000 19,941,000 20,894,000 20,907,000 18,064,000       
      total other assets, non-current
    1,633,700,000 1,622,800,000 1,631,100,000 1,650,400,000 1,649,600,000 1,656,800,000 1,656,000,000 1,674,500,000 1,680,306,000 1,687,274,000 1,704,417,000 1,748,574,000 1,775,724,000 1,786,983,000 1,807,931,000 1,874,587,000 1,965,088,000 1,969,562,000 2,022,291,000 1,575,781,000 1,557,757,000 1,557,190,000 1,559,609,000 1,560,158,000 1,552,511,000 1,577,997,000 1,571,817,000 1,563,602,000 1,535,599,000 1,533,953,000 1,534,351,000 1,533,600,000 1,558,445,000 1,565,374,000 1,568,663,000 1,567,080,000 1,556,546,000 1,548,837,000 1,567,508,000 562,271,000 567,435,000 566,092,000 563,732,000 569,101,000 526,979,000 526,716,000 523,836,000 522,896,000 562,084,000 559,447,000             
      total assets
    10,329,000,000 10,091,600,000 10,061,200,000 10,022,600,000 9,718,700,000 10,185,900,000 9,676,700,000 9,620,400,000 9,932,928,000 9,409,095,000 9,460,136,000 9,618,230,000 9,322,294,000 9,134,562,000 9,130,654,000 9,131,896,000 8,910,390,000 8,738,052,000 8,696,199,000 8,088,786,000 7,829,050,000 7,689,932,000 7,648,814,000 7,558,457,000 7,274,950,000 7,081,453,000 7,037,572,000 6,963,327,000 6,661,938,000 6,570,129,000 6,626,989,000 6,658,902,000 6,551,177,000 6,489,092,000 6,475,849,000 6,515,444,000 6,452,136,000 6,394,864,000 6,324,653,000 4,655,501,000 4,246,562,000 4,220,271,000 4,319,828,000 4,279,806,000 4,073,262,000 3,970,498,000 3,964,964,000 3,875,178,000 3,801,240,000 3,686,586,000 3,853,628,000 3,774,280,000 4,127,083,000 3,953,367,000 3,727,028,000 3,358,639,000       
      liabilities and equity
                                                                  
      current liabilities:
                                                                  
      accounts payable
    219,100,000 180,800,000 216,800,000 229,100,000 136,300,000 155,200,000 132,600,000 186,400,000 124,033,000 133,300,000 173,221,000 310,020,000 187,046,000 185,735,000 173,102,000 217,761,000 142,130,000 133,354,000 160,179,000 183,340,000 152,010,000 118,942,000 136,344,000 193,523,000 145,085,000 150,508,000 178,678,000 210,609,000 115,900,000 104,718,000 106,281,000 160,887,000 95,595,000 99,970,000 105,074,000 153,477,000 141,780,000 170,149,000 121,684,000 105,468,000 91,633,000 78,021,000 88,770,000 124,139,000 100,444,000 100,098,000 149,681,000 130,416,000 77,077,000 82,437,000 69,138,000 59,739,000 104,748,000 219,167,000 217,559,000 194,342,000 184,208,000 175,190,000 288,907,000 234,647,000 242,048,000 242,813,000 
      accrued liabilities
    292,400,000 251,100,000 253,200,000 302,200,000 291,700,000 259,600,000 263,900,000 293,300,000 257,458,000 217,259,000 228,861,000 243,457,000 250,835,000 226,320,000 227,209,000 244,759,000 249,835,000 219,022,000 230,444,000 243,612,000 244,010,000 201,667,000 203,445,000 226,767,000 217,832,000 188,517,000 196,072,000 215,501,000 201,353,000 190,339,000 194,040,000 219,462,000 213,571,000 201,993,000 203,467,000 244,034,000 228,522,000 218,250,000 272,181,000 232,061,000 229,957,000 160,528,000 166,781,000 170,115,000 163,374,000 141,177,000 145,973,000 151,277,000 152,911,000 140,230,000 179,284,000 158,240,000 151,319,000 168,640,000 141,184,000 140,939,000 150,042,000 133,291,000 134,940,000 144,768,000 104,808,000 116,197,000 
      derivative liabilities, current
    5,200,000 1,700,000  4,200,000 4,500,000 1,700,000 2,000,000 6,500,000 2,193,000 322,000 1,729,000 6,600,000 5,569,000 4,719,000 191,000 1,439,000 3,471,000 5,178,000 2,526,000 2,044,000 1,439,000 621,000 852,000 2,254,000 2,396,000 1,491,000 95,000 947,000 1,154,000 485,000 891,000 2,081,000 1,562,000 719,000 464,000 2,459,000 1,941,000 28,855,000 3,965,000 2,835,000 3,312,000 3,289,000 3,342,000 3,340,000 3,397,000 3,480,000 3,498,000 3,474,000 65,944,000 89,112,000 86,509,000 85,675,000 84,367,000 129,163,000 91,139,000 68,834,000       
      regulatory liabilities, current
    91,900,000 96,600,000 99,000,000 94,100,000 86,200,000 90,300,000 89,900,000 98,900,000 93,988,000 101,979,000 110,100,000 46,013,000 24,797,000 33,356,000 52,742,000 17,574,000 30,156,000 36,124,000 13,580,000 25,061,000 22,282,000 59,428,000 54,345,000 33,507,000 25,168,000 39,642,000 45,777,000 29,810,000 41,442,000 52,102,000 42,499,000 6,832,000 7,042,000 17,305,000 22,118,000 13,067,000 16,925,000 34,275,000 35,933,000 4,865,000 5,647,000 10,910,000 17,621,000 3,687,000 828,000 828,000 583,000 10,727,000 14,707,000 19,020,000 10,705,000 16,785,000 16,231,000 10,568,000 15,004,000 9,850,000       
      notes payable
    126,000,000 123,700,000 59,900,000 133,800,000 17,500,000       535,600,000 501,350,000 335,050,000 341,480,000 420,180,000 332,525,000 829,850,000 815,870,000 234,040,000 84,320,000  319,125,000 349,500,000 294,900,000 102,500,000 164,650,000 185,620,000 112,100,000 121,800,000 164,200,000 211,300,000 225,170,000 107,975,000 50,950,000 96,600,000 75,000,000 75,000,000 215,600,000 76,800,000 117,900,000 105,760,000 102,600,000 75,000,000 184,000,000 132,700,000 100,000,000 82,500,000 138,300,000 245,000,000 225,000,000 225,000,000 345,000,000 359,000,000 287,000,000 223,000,000 350,500,000 270,500,000 703,800,000 627,800,000 73,000,000 37,000,000 
      total current liabilities
    734,600,000 953,900,000 928,900,000 763,400,000 536,200,000 1,106,800,000 1,088,400,000 1,185,100,000 1,602,672,000 977,860,000 1,038,911,000 1,666,690,000 969,597,000 785,180,000 794,724,000 901,713,000 758,117,000 1,230,528,000 1,229,599,000 696,533,000 513,932,000 384,965,000 719,854,000 811,294,000 691,124,000 488,401,000 591,015,000 648,230,000 730,230,000 730,635,000 788,564,000 649,101,000 554,270,000 438,865,000 391,542,000 527,932,000 480,820,000 1,467,896,000 660,262,000 422,029,000 448,757,000 358,508,000 379,114,000 651,281,000 727,043,000 653,283,000 399,735,000 378,394,000 704,633,000 681,593,000 898,946,000 773,029,000 878,067,000 889,431,000 756,140,000 671,959,000       
      long-term debt, net of current maturities
    4,252,800,000 3,952,400,000 3,951,600,000 4,250,200,000 4,248,800,000 4,247,100,000 3,802,800,000 3,801,200,000 3,799,510,000 3,955,745,000 3,954,409,000 3,607,340,000 4,131,033,000 4,129,662,000 4,128,291,000 4,126,923,000 4,125,571,000 3,530,216,000 3,529,158,000 3,528,100,000 3,526,894,000 3,532,887,000 3,136,887,000 3,140,096,000    2,950,835,000    3,109,400,000    3,211,189,000    1,866,866,000 1,567,797,000 1,567,727,000 1,542,658,000 1,267,589,000 1,107,519,000 1,121,950,000 1,396,949,000 1,396,948,000 955,979,000 936,477,000 942,950,000 1,044,891,000 1,280,409,000 1,282,194,000 1,184,830,000 993,514,000 719,215,000 719,243,000 501,252,000 501,277,000 561,136,000 564,372,000 
      deferred credits and other liabilities:
                                                                  
      deferred income tax liabilities
    679,600,000 674,000,000 666,500,000 625,100,000 603,300,000 598,500,000 576,100,000 548,000,000 530,985,000 528,627,000 535,852,000 508,941,000 491,859,000 490,207,000 490,384,000 465,388,000 445,036,000 436,495,000 428,127,000 408,624,000 398,136,000 388,962,000 387,939,000 360,719,000 347,952,000 343,207,000 337,184,000 311,331,000 292,753,000 289,814,000 290,491,000 336,520,000                               
      regulatory liabilities, non-current
    484,700,000 480,100,000 475,200,000 474,600,000 470,800,000 467,100,000 463,500,000 467,700,000 468,969,000 469,509,000 466,961,000 472,560,000 469,963,000 482,642,000 482,442,000 485,377,000 496,261,000 497,608,000 497,810,000 507,659,000 505,317,000 506,393,000 504,149,000 503,145,000 498,773,000 514,914,000 511,482,000 510,984,000 508,846,000 497,929,000 495,362,000 478,294,000 198,189,000 199,005,000 196,538,000 193,689,000 186,496,000 195,166,000 200,337,000 148,176,000 152,164,000 150,835,000 148,918,000 145,144,000 118,856,000 119,462,000 116,793,000 109,429,000 131,730,000 126,573,000 120,491,000 114,593,000 108,217,000 85,074,000 90,923,000 44,788,000       
      benefit plan liabilities
    120,900,000 119,900,000 122,300,000 122,900,000 122,900,000 122,000,000 124,100,000 123,900,000 119,046,000 118,841,000 117,765,000 116,742,000 120,629,000 121,338,000 123,111,000 123,925,000 150,727,000 151,290,000 150,979,000 150,556,000 144,049,000 142,580,000 152,693,000 154,472,000 134,150,000 146,648,000 145,883,000 145,147,000 151,613,000 162,199,000 160,580,000 159,646,000 149,803,000 176,102,000 174,827,000 173,682,000 171,633,000 173,347,000 181,270,000 146,459,000 158,614,000 165,791,000 162,334,000 158,966,000 108,924,000 116,403,000 113,324,000 111,479,000 169,448,000 172,353,000 167,690,000 162,530,000 177,480,000 124,214,000 128,170,000 144,199,000 135,027,000 160,712,000 159,034,000    
      other deferred credits and other liabilities
    205,500,000 191,900,000 199,600,000 201,200,000 204,500,000 201,000,000 199,300,000 188,700,000 152,174,000 155,746,000 154,507,000 156,062,000 155,456,000 142,732,000 140,680,000 141,447,000 134,776,000 133,021,000 135,224,000 134,667,000 120,522,000 119,649,000 122,869,000 124,662,000 120,820,000 118,613,000 118,007,000 109,377,000 105,928,000 104,951,000 105,221,000 105,735,000 137,251,000 135,510,000 135,847,000 138,643,000 141,007,000 122,015,000 124,181,000 155,369,000 136,462,000 154,656,000 154,604,000 154,406,000 144,089,000 137,765,000 129,083,000 133,279,000 133,341,000 125,958,000 129,630,000 124,482,000 123,553,000 128,013,000 134,617,000 114,021,000       
      total deferred credits and other liabilities
    1,490,700,000 1,465,900,000 1,463,600,000 1,423,800,000 1,401,500,000 1,388,600,000 1,363,000,000 1,328,300,000 1,271,174,000 1,272,723,000 1,275,085,000 1,254,305,000 1,237,907,000 1,236,919,000 1,236,617,000 1,216,137,000 1,226,800,000 1,218,414,000 1,212,140,000 1,201,506,000 1,168,024,000 1,157,584,000 1,167,650,000 1,142,998,000 1,101,695,000 1,123,382,000 1,112,556,000 1,076,839,000 1,059,140,000 1,054,893,000 1,051,654,000 1,080,195,000 1,091,061,000 1,099,894,000 1,084,599,000 1,041,894,000 1,033,318,000 1,021,505,000 1,020,512,000 900,739,000 942,796,000 983,150,000 990,289,000 984,912,000 881,308,000 853,940,000 830,861,000 792,088,000 849,679,000 807,623,000 797,415,000 760,075,000 759,271,000 693,737,000 672,911,000 585,168,000       
      commitments, contingencies and guarantees
                                                                  
      equity:
                                                                  
      stockholder's equity -
                                                                  
      common stock 1 par value; 100,000,000 shares authorized; issued 75,520,225 and 71,676,756 shares, respectively
    75,500,000                                                              
      additional paid-in capital
    2,415,000,000 2,260,700,000 2,238,200,000 2,193,400,000 2,193,900,000 2,084,200,000 2,040,200,000 2,007,700,000 1,994,439,000 1,941,234,000 1,911,476,000 1,882,653,000 1,811,093,000 1,808,437,000 1,786,980,000 1,783,436,000 1,726,277,000 1,701,825,000 1,658,957,000 1,657,285,000 1,655,912,000 1,654,563,000 1,652,861,000 1,552,788,000 1,553,190,000 1,522,208,000 1,469,410,000 1,450,569,000 1,157,214,000 1,154,947,000 1,151,933,000 1,150,285,000 1,147,922,000 1,145,493,000 1,143,102,000 1,138,982,000 1,123,527,000 1,072,927,000 960,605,000 953,044,000 753,856,000 751,679,000 749,517,000 748,840,000 746,575,000 744,505,000 742,016,000 742,344,000 740,209,000 735,000,000 731,176,000 727,613,000 722,623,000 604,945,000 601,021,000 593,589,000 588,556,000 586,879,000 584,582,000 580,601,000 578,742,000 560,475,000 
      retained earnings
    1,289,000,000 1,313,300,000 1,334,800,000 1,249,100,000 1,197,500,000 1,219,600,000 1,241,700,000 1,158,200,000 1,121,196,000 1,118,145,000 1,136,844,000 1,064,122,000 1,032,522,000 1,036,263,000 1,041,451,000 962,458,000 929,369,000 921,122,000 931,538,000 870,738,000 828,993,000 826,269,000 838,841,000 778,776,000 742,138,000 761,222,000 777,262,000 700,396,000 644,154,000 652,642,000 656,161,000 548,617,000 516,371,000 512,498,000 513,885,000 457,934,000 462,090,000 469,940,000 490,999,000 472,534,000 504,864,000 532,965,000 629,135,000 599,389,000 582,800,000 573,379,000 570,963,000 540,244,000 539,030,000 519,184,000 478,459,000 460,324,000 476,603,000 467,043,000 498,614,000 491,202,000 454,907,000 470,883,000 447,453,000 561,102,000 400,909,000 397,393,000 
      treasury stock
    -2,700,000 -2,800,000 -2,000,000 -3,300,000 -5,900,000 -4,900,000 -4,700,000 -4,100,000 -3,457,000 -3,167,000 -2,697,000 -2,435,000 -1,715,000 -1,542,000 -1,287,000 -3,509,000 -2,819,000 -2,988,000 -2,564,000 -2,119,000 -1,710,000 -1,879,000 -1,925,000 -267,000 -1,636,000 -1,544,000 -1,432,000 -2,510,000 -4,072,000 -3,642,000 -3,049,000 -2,306,000 -2,448,000 -2,325,000 -2,443,000 -791,000 -1,155,000 -975,000 -1,573,000 -1,888,000 -1,789,000 -1,771,000 -1,688,000 -1,875,000 -1,841,000 -1,801,000 -1,638,000 -1,968,000 -1,801,000 -1,549,000 -2,354,000 -2,177,000 -970,000 -810,000 -762,000 -112,000   -1,392,000   -1,347,000 
      accumulated other comprehensive
    -8,800,000 -8,000,000           -20,389,000                                                  
      total stockholders' equity
    3,768,000,000 3,636,100,000 3,635,100,000  3,446,600,000 3,357,300,000 3,333,900,000  3,167,317,000 3,110,015,000 3,097,947,000                                        1,214,317,000 1,196,285,000 1,209,336,000 1,088,005,000 1,113,147,000 1,107,998,000       
      non-controlling interest
    82,900,000 83,300,000 82,000,000 83,700,000 85,600,000 86,100,000 88,600,000 90,500,000 92,255,000 92,752,000 93,784,000 94,982,000 97,141,000 97,354,000 99,107,000 100,029,000 102,379,000                                              
      total equity
    3,850,900,000 3,719,400,000 3,717,100,000 3,585,200,000 3,532,200,000 3,443,400,000 3,422,500,000 3,305,800,000 3,259,572,000 3,202,767,000 3,191,731,000 3,089,895,000 2,983,757,000 2,982,801,000 2,971,022,000 2,887,123,000 2,799,902,000 2,758,894,000 2,725,302,000 2,662,647,000 2,620,200,000 2,614,496,000 2,624,423,000 2,464,069,000 2,432,896,000 2,419,998,000 2,383,702,000 2,287,423,000 1,921,179,000 1,926,533,000 1,927,984,000 1,820,206,000 1,795,982,000 1,790,031,000 1,788,978,000 1,730,134,000 1,722,024,000 1,679,945,000                   1,062,530,000 1,080,100,000     
      total liabilities and total equity
    10,329,000,000 10,091,600,000 10,061,200,000 10,022,600,000 9,718,700,000 10,185,900,000 9,676,700,000 9,620,400,000 9,932,928,000 9,409,095,000 9,460,136,000 9,618,230,000 9,322,294,000 9,134,562,000 9,130,654,000 9,131,896,000 8,910,390,000 8,738,052,000 8,696,199,000 8,088,786,000 7,829,050,000 7,689,932,000 7,648,814,000 7,558,457,000 7,274,950,000 7,081,453,000 7,037,572,000 6,963,327,000 6,661,938,000 6,570,129,000 6,626,989,000                                
      current maturities of long-term debt
     300,000,000 300,000,000   600,000,000 600,000,000 600,000,000 1,125,000,000 525,000,000 525,000,000 525,000,000      7,000,000 7,000,000 8,436,000 9,871,000 4,307,000 5,743,000 5,743,000 5,743,000 5,743,000 5,743,000 5,743,000 255,743,000 255,743,000 255,743,000 5,743,000 5,743,000 5,743,000 5,743,000 5,743,000 5,743,000 930,743,000      275,000,000 275,000,000 275,000,000   255,694,000 104,637,000 328,310,000 227,590,000 2,473,000 2,893,000 4,254,000 24,426,000 32,091,000 32,086,000 2,078,000 2,074,000 143,187,000 143,183,000 
      common stock 1 par value; 100,000,000 shares authorized; issued 72,902,676 and 71,676,756 shares, respectively
     72,900,000                                                             
      derivative assets, current
      100,000      126,000 303,000 153,000 582,000 3,868,000 716,000 7,382,000 4,373,000 12,316,000 3,925,000 1,917,000 1,848,000 2,001,000 1,581,000 1,780,000 342,000 412,000 405,000 932,000 1,500,000 1,392,000 666,000 295,000 304,000 657,000 1,148,000 1,541,000 4,138,000 4,382,000 4,030,000 1,486,000       1,737,000 1,846,000 717,000 126,000 1,630,000 16,063,000 16,595,000 18,583,000 48,727,000 49,295,000 54,773,000       
      common stock 1 par value; 100,000,000 shares authorized; issued 72,544,232 and 71,676,756 shares, respectively
      72,500,000                                                            
      accumulated other comprehensive income
      -8,400,000 -9,400,000 -10,600,000 -11,300,000 -12,300,000 -14,800,000 -12,907,000 -13,312,000 -14,347,000 -15,567,000  -22,816,000 -20,078,000 -20,084,000 -19,169,000 -24,446,000 -26,328,000 -27,346,000 -26,922,000 -28,434,000 -29,382,000 -30,655,000 -25,695,000 -26,227,000 -26,459,000 -26,916,000 -37,703,000 -38,763,000 -39,924,000 -41,202,000 -32,566,000 -32,941,000 -33,730,000 -34,883,000 -32,951,000 -31,764,000 -20,825,000 -9,055,000 -14,611,000 -16,859,000 -14,054,000 -15,044,000 -14,839,000 -19,441,000 -18,589,000 -17,422,000 -31,021,000 -36,224,000 -37,215,000 -33,652,000 -32,878,000 -22,665,000         
      less accumulated depreciation and depletion
       -1,936,600,000    -1,797,900,000    -1,576,842,000    -1,407,397,000    -1,285,816,000    -1,281,493,000    -1,145,136,000    -1,026,088,000    -1,943,234,000    -1,717,684,000    -1,324,025,000    -1,269,148,000  -1,210,833,000 -1,253,808,000 -1,006,827,000 -934,441,000 -934,112,000 -889,031,000 -830,423,000 -795,378,000 -773,278,000 -683,332,000 -566,191,000 -689,997,000 -667,031,000 
      stockholders’ equity -
                                                                  
      common stock 1.00 par value; 100,000,000 shares authorized; issued: 71,676,756 and 68,265,042, respectively
       71,700,000                                                           
      total stockholders’ equity
       3,501,500,000    3,215,300,000    2,994,913,000 2,886,616,000 2,885,447,000 2,871,915,000 2,787,094,000 2,697,523,000 2,659,040,000 2,624,513,000 2,561,385,000 2,519,046,000 2,513,292,000 2,523,168,000 2,362,123,000 2,329,478,000 2,316,750,000 2,279,159,000 2,181,588,000 1,813,255,000 1,818,846,000 1,818,770,000 1,708,974,000 1,682,804,000 1,676,239,000 1,674,316,000 1,614,639,000 1,604,642,000 1,562,427,000 1,480,683,000 1,465,867,000 1,287,212,000 1,310,886,000 1,407,767,000 1,376,024,000 1,357,392,000 1,341,325,000 1,337,419,000 1,307,748,000 1,290,949,000 1,260,893,000             
      common stock 1 par value; 100,000,000 shares authorized; issued 71,676,746 and 68,265,042 shares, respectively
        71,700,000                                                          
      common stock 1 par value; 100,000,000 shares authorized; issued 69,747,220 and 68,265,042 shares, respectively
         69,700,000                                                         
      common stock 1 par value; 100,000,000 shares authorized; issued 68,969,578 and 68,265,042 shares, respectively
          69,000,000                                                        
      common stock 1.00 par value; 100,000,000 shares authorized; issued: 68,265,042 and 66,140,396, respectively
           68,300,000                                                       
      less: accumulated depreciation and depletion
            -1,755,606,000 -1,671,303,000 -1,628,772,000  -1,538,731,000 -1,499,552,000 -1,454,425,000  -1,380,304,000 -1,361,453,000 -1,320,525,000  -1,276,410,000 -1,251,075,000 -1,223,979,000  -1,243,794,000 -1,224,600,000 -1,187,112,000  -1,118,783,000 -1,087,689,000 -1,048,933,000  -2,020,331,000 -1,981,880,000 -1,943,538,000  -1,841,116,000 -1,819,886,000 -1,742,070,000  -1,617,723,000 -1,522,969,000 -1,351,857,000  -1,338,509,000 -1,325,660,000 -1,298,398,000  -1,258,450,000              
      common stock 1 par value; 100,000,000 shares authorized; issued 68,046,262 and 66,140,396 shares, respectively
            68,046,000                                                      
      common stock 1 par value; 100,000,000 shares authorized; issued 67,115,403 and 66,140,396 shares, respectively
             67,115,000                                                     
      common stock 1 par value; 100,000,000 shares authorized; issued 66,670,709 and 66,140,396 shares, respectively
              66,671,000                                                    
      common stock 1.00 par value; 100,000,000 shares authorized; issued: 66,140,396 and 64,793,095, respectively
               66,140,000                                                   
      stockholders’ equity —
                                                                  
      common stock 1 par value; 100,000,000 shares authorized; issued 65,105,205 and 64,793,095 shares, respectively
                65,105,000                                                  
      common stock 1 par value; 100,000,000 shares authorized; issued 65,105,178 and 64,793,095 shares, respectively
                 65,105,000                                                 
      common stock 1 par value; 100,000,000 shares authorized; issued 64,849,227 and 64,793,095 shares, respectively
                  64,849,000                                                
      common stock 1.00 par value; 100,000,000 shares authorized; issued: 64,793,095 and 62,827,179, respectively
                   64,793,000                                               
      common stock 1 par value; 100,000,000 shares authorized; issued 63,865,151 and 62,827,179 shares, respectively
                    63,865,000                                              
      common stock 1 par value; 100,000,000 shares authorized; issued 63,526,913 and 62,827,179 shares, respectively
                     63,527,000                                             
      noncontrolling interest
                     99,854,000 100,789,000 101,262,000 101,154,000 101,204,000 101,255,000 101,946,000 103,418,000 103,248,000 104,543,000 105,835,000 107,924,000 107,687,000 109,214,000 111,232,000 113,178,000 113,792,000 114,662,000 115,495,000 117,382,000 117,518,000                         
      common stock 1 par value; 100,000,000 shares authorized; issued 62,909,973 and 62,827,179 shares, respectively
                      62,910,000                                            
      common stock 1.00 par value; 100,000,000 shares authorized; issued: 62,827,179 and 61,480,658, respectively
                       62,827,000                                           
      investments
                        15,659,000 15,438,000 15,250,000 21,929,000 21,583,000 41,271,000 41,247,000 41,013,000 41,202,000 41,148,000 40,927,000 13,090,000 12,947,000 12,761,000 12,712,000 12,561,000 12,416,000 12,363,000 12,126,000 11,985,000 12,148,000 12,098,000 17,210,000 17,294,000 17,144,000 17,096,000 16,916,000 16,697,000 16,612,000 16,545,000 16,273,000 16,208,000 17,261,000 17,338,000 17,088,000 18,466,000 19,462,000 20,316,000 22,764,000 21,911,000 16,745,000 19,216,000 
      commitments and contingencies
                                                                  
      common stock 1 par value; 100,000,000 shares authorized; issued 62,773,015 and 61,480,658 shares, respectively
                        62,773,000                                          
      common stock 1 par value; 100,000,000 shares authorized; issued 62,772,996 and 61,480,658 shares, respectively
                         62,773,000                                         
      common stock 1 par value; 100,000,000 shares authorized; issued 62,772,978 and 61,480,658 shares, respectively
                          62,773,000                                        
      common stock 1 par value; 100,000,000 shares authorized; issued: 61,480,658 and 60,048,567, respectively
                           61,481,000                                       
      restricted cash
                            3,688,000 3,602,000 3,494,000  3,241,000 3,084,000 2,958,000                      9,254,000 4,080,000 3,406,000 27,215,000 6,000   5,514,000 5,484,000 5,443,000 
      liabilities and total equity
                                                                  
      long-term debt
                            3,049,235,000 3,049,672,000 2,950,299,000  2,951,389,000 2,858,068,000 2,858,787,000  3,109,864,000 3,160,302,000 3,210,730,000  3,211,768,000 2,221,347,000 3,159,055,000                        
      common stock 1 par value; 100,000,000 shares authorized; issued 61,480,640 and 60,048,567 shares, respectively
                            61,481,000                                      
      common stock 1 par value; 100,000,000 shares authorized; issued 61,091,385 and 60,048,567 shares, respectively
                             61,091,000                                     
      current assets held for sale
                                2,854,000 3,557,000 24,724,000 84,242,000                               
      current liabilities held for sale
                                2,538,000 5,448,000 24,910,000 41,774,000                               
      common stock 1 par value; 100,000,000 shares authorized; issued 60,378,020; 60,048,567; and 53,648,817 shares, respectively
                              60,378,000                                    
      accrued income tax
                                   1,022,000    12,552,000              1,157,000             
      common stock 1 par value; 100,000,000 shares authorized; issued: 60,048,567 and 53,579,986, respectively
                               60,049,000                                   
      noncurrent assets held for sale
                                                                  
      accrued income taxes
                                    5,587,000 5,160,000 3,726,000  10,909,000 10,624,000 10,899,000  308,000               10,568,000 15,734,000 27,152,000  48,360,000 303,000 833,000 
      non-current liabilities held for sale
                                                                  
      common stock 1 par value; 100,000,000 shares authorized; issued 53,661,863; 53,579,986; and 53,524,529 shares, respectively
                                53,662,000                                  
      common stock 1 par value; 100,000,000 shares authorized; issued 53,661,850; 53,579,986; and 53,513,521 shares, respectively
                                 53,662,000                                 
      common stock 1 par value; 100,000,000 shares authorized; issued 53,648,817; 53,579,986; and 53,502,252 shares, respectively
                                  53,649,000                                
      derivative assets, non-current
                                     37,000 9,000 222,000 183,000 226,000 85,000 3,441,000           1,167,000 1,770,000 1,971,000 17,215,000 5,135,000 5,877,000       
      liabilities, redeemable noncontrolling interest and equity
                                                                  
      noncurrent liabilities held for sale
                                                                  
      redeemable noncontrolling interest
                                       4,295,000 4,206,000 4,171,000                         
      common stock 1 par value; 100,000,000 shares authorized; issued: 53,579,986 and 53,397,467, respectively
                                   53,580,000                               
      total liabilities, redeemable noncontrolling interest and total equity
                                   6,658,902,000 6,551,177,000 6,489,092,000 6,475,849,000 6,515,444,000 6,452,136,000 6,394,864,000                         
      liabilities, redeemable noncontrolling interest and total equity
                                                                  
      deferred income tax liabilities, net, non-current
                                    605,744,000 589,189,000 577,211,000 535,606,000 533,865,000 530,746,000 500,202,000 450,579,000 494,834,000 510,435,000 522,290,000 523,716,000 506,166,000 476,059,000 466,856,000 432,287,000 403,772,000 367,502,000 338,194,000 316,393,000 300,988,000          
      derivative liabilities, non-current
                                    74,000 88,000 176,000 274,000 317,000 231,000 14,522,000 156,000 722,000 1,433,000 2,143,000 2,680,000 3,273,000 4,251,000 4,805,000 5,614,000 11,388,000 15,237,000 41,410,000 42,077,000 49,033,000 26,603,000 15,554,000 12,081,000       
      common stock 1 par value; 100,000,000 shares authorized; issued 53,524,529; 53,397,467; and 53,131,469 shares, respectively
                                    53,525,000                              
      common stock 1 par value; 100,000,000 shares authorized; issued 53,513,521; 53,397,467; and 52,299,075 shares, respectively
                                     53,514,000                             
      common stock 1 par value; 100,000,000 shares authorized; issued 53,502,252; 53,397,467; and 51,477,472 shares, respectively
                                      53,502,000                            
      common stock 1 par value; 100,000,000 shares authorized; issued: 53,397,467 and 51,231,861 shares, respectively
                                       53,397,000                           
      deferred income tax assets, net, current
                                            47,783,000 52,394,000 23,913,000 48,288,000 34,756,000 23,872,000 25,780,000 18,889,000 37,163,000 38,196,000 33,681,000 30,401,000 37,202,000          
      common stock 1 par value; 100,000,000 shares authorized; issued 53,131,469; 51,231,861; and 44,891,626 shares, respectively
                                        53,131,000                          
      liabilities and stockholders’ equity
                                                                  
      common stock 1 par value; 100,000,000 shares authorized; issued 52,299,075; 51,231,861; and 44,871,771 shares, respectively
                                         52,299,000                         
      redeemable non-controlling interest
                                          4,141,000                        
      stockholders’ equity:
                                                                  
      common stock equity —
                                                                  
      common stock 1 par value; 100,000,000 shares authorized; issued 51,477,472; 51,231,861; and 44,856,790 shares, respectively
                                          51,477,000                        
      total liabilities and stockholders’ equity
                                          6,324,653,000 4,655,501,000 4,246,562,000 4,220,271,000 4,319,828,000 4,279,806,000 4,073,262,000 3,970,498,000 3,964,964,000 3,875,178,000 3,801,240,000 3,686,586,000             
      common stock 1 par value; 100,000,000 shares authorized; issued: 51,231,861 and 44,714,072 shares, respectively
                                           51,232,000                       
      common stock 1 par value; 100,000,000 shares authorized; issued 44,891,626; 44,714,072; and 44,696,670 shares, respectively
                                            44,892,000                      
      common stock 1 par value; 100,000,000 shares authorized; issued 44,871,771; 44,714,072; and 44,682,885 shares, respectively
                                             44,872,000                     
      common stock 1 par value; 100,000,000 shares authorized; issued 44,856,790; 44,714,072; and 44,666,953 shares, respectively
                                              44,857,000                    
      common stock 1 par value; 100,000,000 shares authorized; issued: 44,714,072 and 44,550,239 shares, respectively
                                               44,714,000                   
      common stock 1 par value; 100,000,000 shares authorized; issued 44,696,670; 44,550,239; and 44,532,245 shares, respectively
                                                44,697,000                  
      common stock 1 par value; 100,000,000 shares authorized; issued 44,682,885; 44,550,239; and 44,516,472 shares, respectively
                                                 44,683,000                 
      common stock 1 par value; 100,000,000 shares authorized; issued 44,666,953; 44,550,239; and 44,482,304 shares, respectively
                                                  44,667,000                
      common stock 1 par value; 100,000,000 shares authorized; issued: 44,550,239 and 44,278,189 shares, respectively
                                                   44,550,000               
      common stock 1 par value; 100,000,000 shares authorized; issued 44,532,245; 44,278,189; and 44,250,588 shares, respectively
                                                    44,532,000              
      common stock 1 par value; 100,000,000 shares authorized; issued 44,482,304; 44,278,189; and 44,151,428 shares, respectively
                                                     44,482,000             
      assets of discontinued operations
                                                        340,851,000      246,000 322,000 1,106,000 1,052,000 
      total other assets
                                                      570,023,000 565,516,000 561,326,000 539,106,000 525,619,000 499,484,000       
      liabilities and stockholders' equity
                                                                  
      liabilities of discontinued operations
                                                        173,929,000      88,000 124,000 757,000 1,551,000 
      stockholders' equity:
                                                                  
      common stock —
                                                                  
      common stock 1 par value: 100,000,000 shares authorized: issued 44,250,588; 43,957,502 and 39,491,616 shares, respectively
                                                      44,251,000            
      total liabilities and stockholders' equity
                                                      3,853,628,000 3,774,280,000 4,127,083,000 3,953,367,000 3,727,028,000 3,358,639,000       
      common stockholders' —
                                                                  
      common stock 1 par value: 100,000,000 shares authorized: issued 44,176,520; 43,957,502 and 39,462,001 shares, respectively
                                                       44,177,000           
      common stock equity-
                                                                  
      common stock 1 par value; 100,000,000 shares authorized; issued: 43,957,502 shares at 2011 and 39,280,048 shares at 2010, respectively
                                                        43,958,000          
      deferred income tax assets, current
                                                         39,628,000 18,362,000        
      deferred income tax liabilities, non-current
                                                         329,833,000         
      common stockholders' equity —
                                                                  
      common stock 1 par value; 100,000,000 shares authorized; issued 39,491,616, 39,280,048 and 39,243,257 shares, respectively
                                                         39,492,000         
      deferred income tax liability, non-current
                                                          303,647,000 270,079,000       
      common stock 1 par value; 100,000,000 shares authorized; issued 39,434,304; 39,280,048 and 39,178,067 shares, respectively
                                                          39,434,000        
      accumulated other comprehensive loss
                                                          -25,160,000 -15,859,000 -19,609,000 -16,415,000 -18,783,000 -29,545,000 -51,788,000 -24,508,000 
      accounts receivables
                                                           242,189,000       
      deferred income tax asset, current
                                                           5,610,000       
      common stockholders' equity -
                                                                  
      common stock 1 par value; 100,000,000 shares authorized; issued 39,178,067; 38,977,526 and 38,796,005 shares, respectively
                                                           39,178,000       
      short-term investments
                                                               6,310,000 7,290,000  
      receivables
                                                            208,563,000      
      derivative assets
                                                            56,951,000 75,600,000 73,068,000 84,758,000 46,337,000 37,208,000 
      deferred income taxes
                                                            13,221,000 17,640,000 10,244,000  14,011,000 4,512,000 
      regulatory assets
                                                            12,775,000 14,086,000 35,390,000    
      other
                                                            7,861,000 11,189,000 17,774,000 69,512,000 47,343,000 46,120,000 
      derivative liabilities
                                                            68,634,000 69,347,000 118,657,000 62,409,000 72,526,000 39,380,000 
      regulatory liabilities
                                                            30,120,000 36,943,000 5,203,000    
      common stock equity –
                                                                  
      common stock 1 par value; 100,000,000 shares authorized;
                                                                  
      issued 38,872,925; 38,676,054 and 38,490,315 shares,
                                                                  
      respectively
                                                            38,873,000 38,837,000  38,490,000 38,425,000  
      shares, respectively
                                                            -197,000 -84,000  -1,419,000 -1,050,000  
      total common stockholders’ equity
                                                            1,062,530,000 1,080,100,000     
      non-controlling interest in subsidiaries
                                                                  
      receivables (net of allowance for doubtful accounts of 7,010;
                                                                  
      6,751 and 3,417, respectively)
                                                             181,250,000     
      issued 38,836,918; 38,676,054 and 38,439,339 shares,
                                                                  
      accounts receivable (net of allowance for doubtful accounts of
                                                                  
      6,751 and 4,588, respectively)
                                                              357,404,000    
      minority interest
                                                                 5,167,000 
      common stock 1 par value; 100,000,000 shares authorized; issued:
                                                                  
      38,676,054 shares at 2008 and 37,842,221 shares at 2007
                                                              38,676,000    
      receivables (net of allowance for doubtful accounts of 6,077;
                                                                  
      4,588 and 5,259, respectively)
                                                               227,862,000   
      other assets
                                                               32,424,000 16,048,000  
      minority interest in subsidiaries
                                                               132,000 5,244,000  
      issued 38,490,315; 37,842,221 and 37,802,087 shares,
                                                                  
      receivables (net of allowance for doubtful accounts of 4,213;
                                                                  
      4,588 and 3,647, respectively)
                                                                270,763,000  
      intangible assets (net of accumulated amortization of
                                                                  
      28,865; 28,114 and 26,632, respectively)
                                                                20,275,000  
      issued 38,425,006; 37,842,221 and 37,701,238 shares,
                                                                  
      4,588 and 4,202, respectively)
                                                                 291,189,000 
      37,842,221 shares in 2007 and 33,404,902 shares in 2006
                                                                 37,842,000 
    The information provided in this report is taken from www.sec.gov and many other data providers. While we have conducted our best efforts to ensure that the parsed data is accurate, we cannot guarantee its accuracy. Please use caution and understand that any consequences of its use are your own responsibility.