7Baggers

Avangrid, Inc
(NYSE:AGR) 

AGR stock logo

Avangrid, Inc. operates as an energy services holding company in the United States. It operates through two segments, Networks and Renewables. The company engages in the generation, transmission, and distribution of electricity, as well as distribution, transportation, and sale of natural gas. It al...

Founded: 1997
Full Time Employees: 6,600
Sector: Utilities
Industry: Utilities-Regulated Electric

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Quarterly
Annual
    Unit: USD2024-10-12 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-11-19 2023-10-12 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-11-19 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-11-19 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 
                                              
      aoci
                                              
      arhi
                                              
      arp
                                              
      asc
                                              
      avangrid
                                              
      bgc
                                              
      pbr
                                              
      caidi
                                              
      cfds
                                              
      cbp
                                              
      cfius
                                              
      cl&p
                                              
      cmp
                                              
      cng
                                              
      deep
                                              
      dimp
                                              
      doc
                                              
      dpa
                                              
      dpu
                                              
      ebitda
                                              
      esm
                                              
      english station
                                              
      exchange act
                                              
      fasb
                                              
      fcc
                                              
      ferc
                                              
      firstenergy
                                              
      form 10-k
                                              
      hlbv
                                              
      hsr
                                              
      ira
                                              
      iberdrola
                                              
      iberdrola group
                                              
      installed capacity
                                              
      iso
                                              
      klamath plant
                                              
      kw
                                              
      mng
                                              
      mpuc
                                              
      mtm
                                              
      mw
                                              
      mwh
                                              
      necec
                                              
      networks
                                              
      non-gaap
                                              
      nrc
                                              
      nypsc
                                              
      nyse
                                              
      nyseg
                                              
      nyserda
                                              
      oci
                                              
      pjm
                                              
      pura
                                              
      renewables
                                              
      rdm
                                              
      rg&e
                                              
      roe
                                              
      saifi
                                              
      scg
                                              
      sec
                                              
      sofr
                                              
      tax act
                                              
      tef
                                              
      uflpa
                                              
      ui
                                              
      uil
                                              
      u.s. gaap
                                              
      vies
                                              
      operating revenues
    2,417 2,083,000,000 1,923,000,000 2,417,000,000 8,308,997,534 2,466 1,974 1,974,000,000 1,587,000,000 2,466,000,000 7,922,997,867 2,133 1,838,000,000 1,794,000,000 2,133,000,000 6,973,998,523 1,477 1,598,000,000 1,477,000,000 1,966,000,000 1,669,000,000 1,470,000,000 1,392,000,000 1,789,000,000 1,609,000,000 1,487,000,000 1,400,000,000 1,842,000,000 1,665,000,000 1,546,000,000 1,402,000,000 1,865,000,000 1,533,000,000 1,341,000,000 1,331,000,000 1,758,000,000 1,491,000,000 1,418,000,000 1,439,000,000 1,670,000,000 1,153,000,000 1,048,000,000 
      operating expenses
                                              
      purchased power, natural gas and fuel used
    724 457,000,000 429,000,000 724,000,000 2,428,999,023 977 482 482,000,000 385,000,000 977,000,000 2,455,999,259 741 535,000,000 440,000,000 741,000,000 1,718,999,735 265 319,000,000 265,000,000 501,000,000 380,000,000 259,000,000 265,000,000 475,000,000 408,000,000 279,000,000 259,000,000 563,000,000 456,000,000 342,000,000 279,000,000 576,000,000 381,000,000 250,000,000 242,000,000 465,000,000 325,000,000 312,000,000 221,000,000 428,000,000 218,000,000 211,000,000 
      operations and maintenance
    792 866,000,000 819,000,000 792,000,000 3,108,999,239 761 924 924,000,000 634,000,000 761,000,000 2,871,999,349 651 758,000,000 693,000,000 651,000,000 2,705,999,324 676 727,000,000 676,000,000 642,000,000 678,000,000 634,000,000 584,000,000 570,000,000 587,000,000 588,000,000 573,000,000 553,000,000 614,000,000 574,000,000 533,000,000 527,000,000 578,000,000 560,000,000 522,000,000 551,000,000 544,000,000 553,000,000 558,000,000 551,000,000 573,000,000 421,000,000 
      depreciation and amortization
    298 327,000,000 310,000,000 298,000,000 1,157,999,720 280 303 303,000,000 285,000,000 280,000,000 1,084,999,739 261 279,000,000 271,000,000 261,000,000 1,013,999,750 250 259,000,000 250,000,000 247,000,000 239,000,000 255,000,000 242,000,000 251,000,000 253,000,000 237,000,000 222,000,000 222,000,000 211,000,000 226,000,000 215,000,000 203,000,000 216,000,000 205,000,000 206,000,000 197,000,000 183,000,000 203,000,000 213,000,000 205,000,000 170,000,000 163,000,000 
      taxes other than income taxes
    196 179,000,000 164,000,000 196,000,000 682,999,817 183 176 176,000,000 157,000,000 183,000,000 657,999,822 178 154,000,000 169,000,000 178,000,000 639,999,845 155 155,000,000 155,000,000 170,000,000 150,000,000 157,000,000 146,000,000 166,000,000 145,000,000 144,000,000 139,000,000 163,000,000 135,000,000 150,000,000 143,000,000 151,000,000 141,000,000 137,000,000 138,000,000 147,000,000 133,000,000 133,000,000 125,000,000 137,000,000 107,000,000 89,000,000 
      total operating expenses
    2,010 1,829,000,000 1,722,000,000 2,010,000,000 7,378,997,799 2,201 1,885 1,885,000,000 1,461,000,000 2,201,000,000 7,070,998,169 1,831 1,726,000,000 1,573,000,000 1,831,000,000 6,078,998,654 1,346 1,460,000,000 1,346,000,000 1,560,000,000 1,447,000,000 1,305,000,000 1,237,000,000 1,462,000,000 1,393,000,000 1,248,000,000 1,193,000,000 1,501,000,000 1,416,000,000 1,293,000,000 1,180,000,000 1,462,000,000 1,958,000,000 1,152,000,000 1,108,000,000 1,360,000,000 1,185,000,000 1,201,000,000 1,117,000,000 1,321,000,000 1,070,000,000 887,000,000 
      operating income
    407 254,000,000 201,000,000 407,000,000 929,999,735 265 89 89,000,000 126,000,000 265,000,000 851,999,698 302 112,000,000 221,000,000 302,000,000 894,999,869 131 138,000,000 131,000,000 406,000,000 222,000,000 165,000,000 155,000,000 327,000,000 216,000,000 239,000,000 207,000,000 341,000,000 249,000,000 253,000,000 222,000,000 403,000,000 -425,000,000 189,000,000 223,000,000 398,000,000 306,000,000 217,000,000 322,000,000 349,000,000 83,000,000 161,000,000 
      yoy
    -100.00% 95848956.60% 225842596.63% 357.30% 638.10% -100.00% -100.00% 29470098.68% 12.50% 19.91% 182.12% -100.00% 85496083.21% 60.14% 130.53% 120.44% -100.00% -16.36% -15.48% 24.16% 2.78% -30.96% -25.12% -4.11% -13.25% -5.53% -6.76% -15.38% -158.59% 33.86% -0.45% 1.26% -238.89% -12.90% -30.75% 14.04% 268.67% 34.78%     
      qoq
    -100.00% 26.37% -50.61% -56.24% 350943196.23% 197.75% -100.00% -29.37% -52.45% -68.90% 282119005.30% -100.00% -49.32% -26.82% -66.26% 683205906.87% -100.00% 5.34% -67.73% 82.88% 34.55% 6.45% -52.60% 51.39% -9.62% 15.46% -39.30% 36.95% -1.58% 13.96% -44.91% -194.82% -324.87% -15.25% -43.97% 30.07% 41.01% -32.61% -7.74% 320.48% -48.45%  
      other income and
                                        18,000,000 3,000,000 20,000,000 49,000,000   
      other income
    54 65,000,000 57,000,000 54,000,000 128,999,975 25 42 42,000,000 29,000,000 25,000,000 29,999,989 11 18,000,000 9,000,000 11,000,000 59,999,966 34 13,000,000 34,000,000 1,000,000 3,000,000 16,000,000 2,000,000 -3,000,000 118,000,000 6,000,000 2,000,000 -7,000,000 -9,000,000 -16,000,000 -20,000,000 -21,000,000 23,000,000 14,000,000 8,000,000 13,000,000     9,500,000 16,000,000 
      earnings from equity method investments
     5,000,000 6,000,000 5,999,998   4,000,000 2,000,000 63.25 253  6,000,000 253,000,000            1,000,000 1,000,000 2,000,000 1,000,000 5,000,000 2,000,000 -43,000,000  1,000,000 2,000,000    2,000,000   
      interest expense, net of capitalization
    -125 -132,000,000 -122,000,000 -125,000,000 -408,999,905 -95 -107 -107,000,000 -99,000,000 -95,000,000 -302,999,929 -71 -76,000,000 -79,000,000 -71,000,000 -297,999,925 -75 -70,000,000 -75,000,000 -73,000,000 -65,000,000 -86,000,000 -89,000,000 -76,000,000 -80,000,000 -72,000,000 -76,000,000 -78,000,000 -84,000,000 -75,000,000 -70,000,000 -74,000,000 -70,000,000 -71,000,000 -68,000,000 -71,000,000 -56,000,000 -60,000,000 -68,000,000 -84,000,000 -76,000,000 -64,000,000 
      income before income tax
    342 191,000,000 141,000,000 342,000,000 655,999,803 197 23 23,000,000 60,000,000 197,000,000 840,999,505 495 56,000,000 157,000,000 495,000,000 663,999,906 94 80,000,000 94,000,000 335,000,000 160,000,000 96,000,000 70,000,000 242,000,000 256,000,000 172,000,000 134,000,000 257,000,000 158,000,000 163,000,000 137,000,000 310,000,000 -515,000,000 132,000,000 164,000,000 342,000,000 257,000,000 162,000,000 274,000,000 316,000,000 27,000,000 110,000,000 
      income tax benefit
    20 19,000,000 13,000,000 20,000,000     9,000,000     -4,000,000  2.5 10  10,000,000                        
      net income
    322 172,000,000 128,000,000 322,000,000 664,999,785 215 31 31,000,000 51,000,000 215,000,000 820,999,573 427 106,000,000 161,000,000 427,000,000 642,999,916 84 104,000,000 84,000,000 321,000,000 152,000,000 81,000,000 76,000,000 230,000,000 216,000,000 139,000,000 105,000,000 216,000,000 116,000,000 134,000,000 110,000,000 238,000,000 -77,000,000 100,000,000 120,000,000 239,000,000 207,000,000 109,000,000 102,000,000 212,000,000 96,000,000 54,000,000 
      yoy
    -100.00% 79999900.00% 412903125.81% 938.71% 1203.92% -100.00% -100.00% 7259853.16% -51.89% 33.54% 92.27% -100.00% 126190376.19% 54.81% 408.33% 100.31% -100.00% 28.40% 10.53% 39.57% -29.63% -41.73% -27.62% 6.48% 86.21% 3.73% -4.55% -9.24% -250.65% 34.00% -8.33% -0.42% -137.20% -8.26% 17.65% 12.74% 115.63% 101.85%     
      qoq
    -100.00% 34.38% -60.25% -51.58% 309302125.58% 593.55% -100.00% -39.22% -76.28% -73.81% 192271462.76% -100.00% -34.16% -62.30% -33.59% 765475990.48% -100.00% 23.81% -73.83% 111.18% 87.65% 6.58% -66.96% 6.48% 55.40% 32.38% -51.39% 86.21% -13.43% 21.82% -53.78% -409.09% -177.00% -16.67% -49.79% 15.46% 89.91% 6.86% -51.89% 120.83% 77.78%  
      net income attributable to noncontrolling interests
    29 33,000,000 41,000,000 29,000,000 120,999,970 30   34,000,000 30,000,000 59,999,982 18  23,000,000 18,000,000 63,999,986 14 7,000,000 14,000,000 13,000,000 7,000,000 6,000,000 12,000,000 10,000,000                   
      net income attributable to avangrid, inc.
    351 205,000,000 169,000,000 351,000,000 785,999,755 245 59 59,000,000 85,000,000 245,000,000 880,999,555 445 105,000,000 184,000,000 445,000,000 706,999,902 98 111,000,000 98,000,000 334,000,000 166,000,000 87,000,000 88,000,000 240,000,000 223,000,000 150,000,000 110,000,000 217,000,000 119,000,000 125,000,000 107,000,000 244,000,000 -77,000,000 99,000,000 120,000,000 239,000,000 207,000,000 109,000,000 102,000,000 212,000,000   
      earnings per common share, basic
    0.91 530,000 440,000 910,000 0.158 0.63 0.15 150,000 220,000 630,000 0.288 1.15 270,000 480,000 1,150,000 0.07 0.28 290,000 280,000 1,080,000 335,000 280,000 280,000 780,000 385,000 480,000 360,000 700,000 380,000 400,000 350,000 790,000 370,000 320,000 390,000 770,000 340,000 350,000 330,000 690,000   
      earnings per common share, diluted
    0.91 530,000 440,000 910,000 0.158 0.63 0.15 150,000 220,000 630,000 0.288 1.15 270,000 480,000 1,150,000 0.07 0.28 290,000 280,000 1,080,000 335,000 280,000 280,000 780,000 385,000 480,000 360,000 700,000 380,000 400,000 340,000 790,000 370,000 320,000 390,000 770,000 340,000 350,000 330,000 690,000   
      weighted-average number of common shares outstanding:
                                              
      basic
    386,916,234 387,010,149,000,000 387,010,149,000,000 386,916,234,000,000 386,810,088,000,000 386,744,996 386,869,341 386,869,341,000,000 386,749,135,000,000 386,744,996,000,000 386,727,246,000,000 386,698,132 386,736,774,000,000 386,736,774,000,000 386,698,132,000,000 358,086,621,000,000 347,121,197 387,321,484,000,000 347,121,197,000,000 309,495,250,000,000 309,494,939,000,000 309,491,082,000,000 309,506,595,000,000 309,491,082,000,000 309,491,082,000,000 309,491,082,000,000 309,491,082,000,000 309,491,082,000,000 309,503,319,000,000 309,491,082,000,000 309,517,854,000,000 309,513,640,000,000 309,502,861,000,000 309,491,082,000,000 309,520,718,000,000 309,508,889,000,000 309,512,553,000,000 309,495,141,000,000 309,527,868,000,000 309,538,215,000,000 254,588,212,000,000  
      diluted
    387,239,544 387,434,841,000,000 387,440,241,000,000 387,239,544,000,000 387,164,874,000,000 387,077,213 387,322,281 387,322,281,000,000 387,108,271,000,000 387,077,213,000,000 387,215,785,000,000 387,114,285 387,280,621,000,000 387,219,348,000,000 387,114,285,000,000 358,578,608,000,000 347,419,064 387,676,085,000,000 347,419,064,000,000 309,736,266,000,000 309,559,387,000,000 309,550,126,000,000 309,547,451,000,000 309,623,573,000,000 309,514,910,000,000 309,517,778,000,000 309,512,752,000,000 309,712,308,000,000 309,712,628,000,000 309,689,890,000,000 309,719,584,000,000 309,793,064,000,000 309,661,883,000,000 309,801,903,000,000 309,826,185,000,000 309,837,442,000,000 309,817,322,000,000 309,999,846,000,000 309,683,965,000,000 309,808,006,000,000 254,605,111,000,000  
      earnings (losses) from equity method investments
     4,000,000           2,000,000    4,000,000 1,000,000 -750,000 1,000,000 2,000,000              1,000,000 2,000,000     
      evergreen power
                                              
      libor
                                              
      merger
                                              
      merger agreement
                                              
      merger sub
                                              
      nmprc
                                              
      pnmr
                                              
      puct
                                              
      side letter
                                              
      income tax (benefit) expense
        -8,999,982 -18 -8 -8,000,000  -18,000,000   -50,000,000     -24,000,000     -6,000,000                    
      adjusted daily compounded sofr
                                              
      adjusted term sofr
                                              
      (losses) earnings from equity method investments
          -1 -1,000,000          -1,000,000      -6,000,000 250,000 -1,000,000                 
      net income (income) attributable to noncontrolling interests
          28 28,000,000                 7,000,000 11,000,000                 
      income tax expense
              19,999,932 68   68,000,000     14,000,000 8,000,000 15,000,000  12,000,000 25,750,000 33,000,000 29,000,000 41,000,000 32,000,000 29,000,000 27,000,000 72,000,000 44,750,000 32,000,000 44,000,000 103,000,000 50,000,000 53,000,000 172,000,000 104,000,000 -69,000,000 56,000,000 
      net (income) loss attributable to noncontrolling interests
                -1,000,000                              
      new york transco
                                              
      income from assets held for sale
                                 1,000,000 10,000,000 5,000,000           
      less: net income attributable to noncontrolling interests
                              -5,000,000 -1,000,000 -3,000,000 9,000,000 3,000,000 -6,000,000  1,000,000         
      cash dividends declared per common share
                                  432,000 432,000 432,000 432,000 432,000 432,000 432,000 432,000 432,000 432,000   
      impairment of non-current assets
                                            2,000,000 3,000,000 
      losses from equity method investments
                                            -750,000 -3,000,000 
      net income attributable to iberdrola usa, inc.
                                            42,750,000 54,000,000 
      earnings per common share, basic and diluted
                                            175,000 200,000 
      weighted-average number of common shares outstanding:
                                              
      basic and diluted
                                             243,000,000 
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2024-09-30 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 
                                           
        assets
                                           
        current assets
                                           
        cash and cash equivalents
      148,000,000 136,000,000 152,000,000 91,000,000 75,000,000 58,000,000 72,000,000 69,000,000 60,000,000 411,000,000 648,000,000 1,474,000,000 1,410,000,000 1,729,000,000 813,000,000 1,463,000,000 101,000,000 46,000,000 26,000,000 178,000,000 103,000,000 166,000,000 33,000,000 36,000,000 32,000,000 52,000,000 40,000,000 41,000,000 27,000,000 36,000,000 30,000,000 91,000,000 182,000,000 396,000,000 403,000,000 427,000,000 1,050,000,000 
        accounts receivable and unbilled revenues
      1,352,000,000 1,375,000,000 1,640,000,000 1,588,000,000 1,417,000,000 1,351,000,000 1,669,000,000 1,737,000,000 1,343,000,000 1,319,000,000 1,476,000,000 1,269,000,000 1,105,000,000 1,094,000,000 1,283,000,000 1,187,000,000 1,021,000,000 969,000,000 1,077,000,000 1,082,000,000 966,000,000 1,009,000,000 1,264,000,000 1,142,000,000 1,060,000,000 986,000,000 1,113,000,000 1,040,000,000 943,000,000 984,000,000 1,117,000,000 1,119,000,000 956,000,000 894,000,000 964,000,000 974,000,000 723,000,000 
        accounts receivable from affiliates
      6,000,000 5,000,000 5,000,000 11,000,000 5,000,000 2,000,000 2,000,000 5,000,000 4,000,000 2,000,000 4,000,000 11,000,000 7,000,000 11,000,000 15,000,000 12,000,000 7,000,000 4,000,000 4,000,000 10,000,000 14,000,000 13,000,000 7,000,000 6,000,000 3,000,000 3,000,000 8,000,000 10,000,000 17,000,000 15,000,000 17,000,000 25,000,000 16,000,000 66,000,000 64,000,000 70,000,000 69,000,000 
        notes receivable from affiliates
      4,000,000 4,000,000 4,000,000 4,000,000 3,000,000 3,000,000 3,000,000 3,000,000                          4,000,000  6,000,000 8,000,000 
        derivative assets
      83,000,000 79,000,000 87,000,000 68,000,000 48,000,000 66,000,000 65,000,000 60,000,000 122,000,000 118,000,000 135,000,000 35,000,000 114,000,000 60,000,000 23,000,000 18,000,000 19,000,000 27,000,000 24,000,000 11,000,000 8,000,000 12,000,000 13,000,000 16,000,000 22,000,000 20,000,000 20,000,000 18,000,000 48,000,000 49,000,000 57,000,000 99,000,000 69,000,000 88,000,000 94,000,000 88,000,000 120,000,000 
        fuel and gas in storage
      187,000,000 173,000,000 169,000,000 185,000,000 197,000,000 189,000,000 185,000,000 268,000,000 272,000,000 171,000,000 91,000,000 139,000,000 136,000,000 83,000,000 83,000,000 93,000,000 100,000,000 86,000,000 78,000,000 110,000,000 112,000,000 91,000,000 62,000,000 109,000,000 116,000,000 88,000,000 57,000,000 99,000,000 278,000,000 265,000,000 235,000,000 246,000,000 240,000,000 230,000,000 213,000,000 307,000,000 190,000,000 
        materials and supplies
      344,000,000 331,000,000 321,000,000 310,000,000 279,000,000 262,000,000 249,000,000 235,000,000 230,000,000 225,000,000 217,000,000 204,000,000 189,000,000 180,000,000 171,000,000 169,000,000 157,000,000 148,000,000 143,000,000 141,000,000 137,000,000 128,000,000 132,000,000 126,000,000 127,000,000 122,000,000 123,000,000 115,000,000 114,000,000 109,000,000 113,000,000 132,000,000 107,000,000 106,000,000 111,000,000 98,000,000 97,000,000 
        prepayments and other current assets
      628,000,000 419,000,000 496,000,000 429,000,000 464,000,000 308,000,000 406,000,000 386,000,000 384,000,000 380,000,000 281,000,000 245,000,000 326,000,000 217,000,000 534,000,000 525,000,000 266,000,000 151,000,000 245,000,000 199,000,000 290,000,000 137,000,000 255,000,000 229,000,000 319,000,000 141,000,000 232,000,000 273,000,000 307,000,000 197,000,000 281,000,000 255,000,000 308,000,000 179,000,000 271,000,000 285,000,000 267,000,000 
        regulatory assets
      914,000,000 801,000,000 745,000,000 718,000,000 570,000,000 512,000,000 489,000,000 447,000,000 389,000,000 363,000,000 377,000,000 400,000,000 340,000,000 296,000,000 317,000,000 310,000,000 252,000,000 282,000,000 299,000,000 294,000,000 250,000,000 247,000,000 232,000,000 299,000,000 284,000,000 288,000,000 309,000,000 307,000,000 287,000,000 277,000,000 248,000,000 285,000,000 275,000,000 272,000,000 203,000,000 219,000,000 114,000,000 
        total current assets
      3,666,000,000 3,323,000,000 3,619,000,000 3,404,000,000 3,058,000,000 2,751,000,000 3,140,000,000 3,210,000,000 2,804,000,000 2,989,000,000 3,229,000,000 3,777,000,000 3,627,000,000 3,670,000,000 3,239,000,000 3,777,000,000 1,923,000,000 1,713,000,000 1,896,000,000 2,025,000,000 1,880,000,000 1,803,000,000 1,998,000,000 1,963,000,000 1,963,000,000 1,700,000,000 1,981,000,000 2,260,000,000 2,021,000,000 1,932,000,000 2,098,000,000 2,252,000,000 2,153,000,000 2,235,000,000 2,323,000,000 2,474,000,000 2,706,000,000 
        total property, plant and equipment
      34,683,000,000 34,063,000,000 33,323,000,000 32,857,000,000 32,068,000,000 31,737,000,000 31,249,000,000 30,994,000,000 30,406,000,000 30,063,000,000 29,719,000,000 28,866,000,000 28,158,000,000 27,648,000,000 27,168,000,000 26,751,000,000 26,432,000,000 25,882,000,000 25,488,000,000 25,218,000,000 24,750,000,000 24,373,000,000 23,555,000,000 23,459,000,000 23,125,000,000 22,917,000,000 22,757,000,000 22,669,000,000 22,682,000,000 22,290,000,000 21,797,000,000 21,548,000,000 21,124,000,000 20,830,000,000 20,698,000,000 20,711,000,000 17,029,000,000 
        operating lease right-of-use assets
      206,000,000 198,000,000 204,000,000 195,000,000 196,000,000 196,000,000 199,000,000 159,000,000 149,000,000 151,000,000 156,000,000 148,000,000 127,000,000 171,000,000 177,000,000 153,000,000 68,000,000 66,000,000 67,000,000 70,000,000 73,000,000 77,000,000 81,000,000               
        equity method investments
      1,060,000,000 914,000,000 836,000,000 718,000,000 514,000,000 446,000,000 440,000,000 437,000,000 416,000,000 431,000,000 434,000,000 560,000,000 571,000,000 716,000,000 695,000,000 668,000,000 668,000,000 666,000,000 656,000,000 645,000,000 516,000,000 505,000,000 481,000,000 366,000,000 351,000,000 362,000,000 348,000,000 352,000,000 406,000,000 392,000,000 384,000,000 387,000,000 366,000,000 371,000,000 360,000,000 385,000,000 271,000,000 
        other investments
      52,000,000 49,000,000 49,000,000 46,000,000 43,000,000 44,000,000 43,000,000 49,000,000 48,000,000 49,000,000 58,000,000 61,000,000 60,000,000 62,000,000 61,000,000 68,000,000 61,000,000 55,000,000 55,000,000 63,000,000 60,000,000 58,000,000 57,000,000 58,000,000 64,000,000 65,000,000 63,000,000 63,000,000 61,000,000 58,000,000 57,000,000 55,000,000 59,000,000 54,000,000 60,000,000 64,000,000 40,000,000 
        other assets
                                           
        goodwill
      3,119,000,000 3,119,000,000 3,119,000,000 3,119,000,000 3,119,000,000 3,119,000,000 3,119,000,000 3,119,000,000 3,119,000,000 3,119,000,000 3,119,000,000 3,119,000,000 3,119,000,000 3,119,000,000 3,119,000,000 3,119,000,000 3,119,000,000 3,119,000,000 3,119,000,000 3,119,000,000 3,127,000,000 3,127,000,000 3,127,000,000 3,127,000,000 3,127,000,000 3,127,000,000 3,127,000,000 3,127,000,000 3,124,000,000 3,124,000,000 3,124,000,000 3,124,000,000 3,113,000,000 3,113,000,000 3,113,000,000 3,115,000,000 1,361,000,000 
        intangible assets
      271,000,000 274,000,000 280,000,000 284,000,000 290,000,000 294,000,000 278,000,000 281,000,000 282,000,000 285,000,000 289,000,000 293,000,000 296,000,000 300,000,000 302,000,000 305,000,000 307,000,000 310,000,000 313,000,000 314,000,000 316,000,000 318,000,000 321,000,000 323,000,000 326,000,000 327,000,000 327,000,000 328,000,000 524,000,000 531,000,000 534,000,000 538,000,000 541,000,000 547,000,000 548,000,000 556,000,000 541,000,000 
        other
      355,000,000 356,000,000 386,000,000 393,000,000 419,000,000 404,000,000 413,000,000 413,000,000 438,000,000 403,000,000 403,000,000 374,000,000 347,000,000 348,000,000 350,000,000 331,000,000 386,000,000 382,000,000 346,000,000 311,000,000 244,000,000 247,000,000 307,000,000 162,000,000 105,000,000 93,000,000 83,000,000 71,000,000 74,000,000 75,000,000 215,000,000 241,000,000 50,000,000 47,000,000 54,000,000 35,000,000 60,000,000 
        total other assets
      3,916,000,000 3,962,000,000 3,970,000,000 3,958,000,000 4,020,000,000 3,964,000,000 3,914,000,000 3,953,000,000 3,971,000,000 3,916,000,000 3,858,000,000 3,845,000,000 3,836,000,000 3,843,000,000 3,845,000,000 3,834,000,000 3,897,000,000 3,895,000,000 3,863,000,000 3,828,000,000 3,768,000,000 3,771,000,000 3,824,000,000 3,675,000,000 3,617,000,000 3,610,000,000 3,600,000,000 3,589,000,000 3,795,000,000 3,800,000,000 3,949,000,000 3,976,000,000 3,797,000,000 3,780,000,000 3,792,000,000 3,795,000,000 2,082,000,000 
        total assets
      46,733,000,000 45,689,000,000 45,062,000,000 43,989,000,000 42,386,000,000 41,606,000,000 41,458,000,000 41,123,000,000 39,907,000,000 39,752,000,000 39,541,000,000 39,504,000,000 38,879,000,000 38,650,000,000 37,768,000,000 37,823,000,000 35,640,000,000 34,856,000,000 34,593,000,000 34,416,000,000 33,547,000,000 33,141,000,000 32,608,000,000 32,167,000,000 31,755,000,000 31,376,000,000 31,483,000,000 31,671,000,000 31,921,000,000 31,485,000,000 31,396,000,000 31,309,000,000 30,609,000,000 30,411,000,000 30,539,000,000 30,743,000,000 24,397,000,000 
        as of
      2,024,000,000 2,024,000,000 2,024,000,000  2,023,000,000 2,023,000,000 2,023,000,000  2,022,000,000 2,022,000,000 2,022,000,000  2,021,000,000 2,021,000,000 2,021,000,000  2,020,000,000 2,020,000,000 2,020,000,000  2,019,000,000 2,019,000,000 2,019,000,000  2,018,000,000 2,018,000,000 2,018,000,000  2,017,000,000 2,017,000,000 2,017,000,000  2,016,000,000 2,016,000,000 2,016,000,000  2,015,000,000 
        liabilities
                                           
        current liabilities
                                           
        current portion of debt
      1,620,000,000 1,468,000,000 729,000,000 612,000,000 55,000,000 125,000,000 413,000,000 412,000,000 322,000,000 350,000,000 281,000,000 372,000,000 336,000,000 514,000,000 387,000,000 313,000,000 813,000,000 523,000,000 726,000,000 730,000,000 232,000,000 374,000,000 325,000,000 394,000,000 523,000,000 362,000,000 214,000,000 183,000,000 267,000,000 307,000,000 325,000,000 349,000,000 187,000,000 168,000,000 166,000,000 206,000,000 173,000,000 
        notes payable
      2,225,000,000 1,933,000,000 1,862,000,000 1,347,000,000 952,000,000 1,862,000,000 1,291,000,000 566,000,000 500,000,000 92,000,000 33,000,000 159,000,000 96,000,000   307,000,000 998,000,000 617,000,000 731,000,000 560,000,000 621,000,000 533,000,000 798,000,000 587,000,000 500,000,000 218,000,000 631,000,000 757,000,000 711,000,000 299,000,000 350,000,000 151,000,000  3,000,000 3,000,000 163,000,000  
        notes payable to affiliates
      8,000,000 14,000,000 515,000,000  6,000,000 6,000,000 2,000,000  2,000,000 1,000,000 2,000,000  2,000,000 2,000,000 8,000,000  4,000,000 11,000,000 16,000,000       31,000,000 31,000,000  20,000,000 20,000,000 17,000,000 10,000,000 3,000,000     
        interest accrued
      131,000,000 108,000,000 116,000,000 104,000,000 103,000,000 64,000,000 93,000,000 66,000,000 85,000,000 67,000,000 86,000,000 69,000,000 79,000,000 72,000,000 81,000,000 70,000,000 87,000,000 74,000,000 77,000,000 72,000,000 81,000,000 70,000,000 70,000,000 62,000,000 67,000,000 58,000,000 65,000,000 57,000,000 64,000,000 60,000,000 65,000,000 60,000,000 60,000,000 60,000,000 61,000,000 61,000,000 37,000,000 
        accounts payable and accrued liabilities
      1,752,000,000 1,739,000,000 1,769,000,000 1,924,000,000 1,517,000,000 1,323,000,000 1,562,000,000 2,007,000,000 1,451,000,000 1,352,000,000 1,343,000,000 1,586,000,000 1,402,000,000 1,348,000,000 1,416,000,000 1,453,000,000 1,481,000,000 1,213,000,000 1,064,000,000 1,361,000,000 1,060,000,000 1,012,000,000 1,084,000,000 1,132,000,000 1,008,000,000 940,000,000 928,000,000 1,071,000,000 951,000,000 901,000,000 902,000,000 1,096,000,000 910,000,000 814,000,000 724,000,000   
        accounts payable to affiliates
      56,000,000 35,000,000 18,000,000  47,000,000 36,000,000 16,000,000 39,000,000 46,000,000 29,000,000 15,000,000 61,000,000 50,000,000 30,000,000 16,000,000 50,000,000 43,000,000 27,000,000 13,000,000 64,000,000 58,000,000 48,000,000 35,000,000 58,000,000 60,000,000 58,000,000 65,000,000 89,000,000 131,000,000 131,000,000 120,000,000 218,000,000 197,000,000 75,000,000 77,000,000 90,000,000 83,000,000 
        dividends payable
      341,000,000 170,000,000 171,000,000 170,000,000 170,000,000 170,000,000 170,000,000 170,000,000 170,000,000 170,000,000 340,000,000 170,000,000 170,000,000 170,000,000 136,000,000 136,000,000 136,000,000 136,000,000 136,000,000 136,000,000 136,000,000 136,000,000 137,000,000 136,000,000 136,000,000 134,000,000 134,000,000 134,000,000 133,000,000 134,000,000 134,000,000 134,000,000 134,000,000 133,000,000 134,000,000   
        taxes accrued
      110,000,000 71,000,000 88,000,000 66,000,000 61,000,000 54,000,000 78,000,000 61,000,000 88,000,000 63,000,000 76,000,000 43,000,000 84,000,000 59,000,000 60,000,000 73,000,000 82,000,000 61,000,000 62,000,000 56,000,000 71,000,000 56,000,000 68,000,000 59,000,000 74,000,000 11,000,000 59,000,000 89,000,000 62,000,000 56,000,000 61,000,000 52,000,000 67,000,000 50,000,000 54,000,000 55,000,000 45,000,000 
        operating lease liabilities
      15,000,000 14,000,000 15,000,000 16,000,000 15,000,000 14,000,000 12,000,000 13,000,000 11,000,000 11,000,000 10,000,000 12,000,000 14,000,000 16,000,000 16,000,000 8,000,000 11,000,000 13,000,000 17,000,000 12,000,000 12,000,000 11,000,000 10,000,000               
        derivative liabilities
      42,000,000 68,000,000 66,000,000 64,000,000 73,000,000 87,000,000 98,000,000 133,000,000 131,000,000 114,000,000 115,000,000 64,000,000 94,000,000 63,000,000 32,000,000 17,000,000 19,000,000 21,000,000 53,000,000 20,000,000 23,000,000 25,000,000 64,000,000 44,000,000 24,000,000 29,000,000 24,000,000 22,000,000 39,000,000 37,000,000 50,000,000 75,000,000 67,000,000 87,000,000 81,000,000  86,000,000 
        other current liabilities
      683,000,000 617,000,000 584,000,000 662,000,000 693,000,000 627,000,000 483,000,000 593,000,000 519,000,000 650,000,000 500,000,000 484,000,000 418,000,000 381,000,000 348,000,000 368,000,000 296,000,000 290,000,000 292,000,000 334,000,000 318,000,000 291,000,000 304,000,000 327,000,000 325,000,000 307,000,000 356,000,000 330,000,000 316,000,000 265,000,000 283,000,000 279,000,000 258,000,000 242,000,000 285,000,000 285,000,000 257,000,000 
        regulatory liabilities
      156,000,000 207,000,000 275,000,000 261,000,000 235,000,000 287,000,000 352,000,000 354,000,000 478,000,000 447,000,000 499,000,000 307,000,000 367,000,000 303,000,000 292,000,000 274,000,000 214,000,000 249,000,000 260,000,000 242,000,000 236,000,000 256,000,000 258,000,000 205,000,000 194,000,000 192,000,000 202,000,000 178,000,000 175,000,000 194,000,000 200,000,000 192,000,000 166,000,000 183,000,000 127,000,000 147,000,000 130,000,000 
        total current liabilities
      7,139,000,000 6,444,000,000 6,208,000,000 5,239,000,000 3,927,000,000 4,655,000,000 4,570,000,000 4,416,000,000 3,803,000,000 3,346,000,000 3,300,000,000 3,329,000,000 3,112,000,000 2,958,000,000 2,792,000,000 3,069,000,000 4,184,000,000 3,235,000,000 3,447,000,000 3,587,000,000 2,848,000,000 2,812,000,000 3,153,000,000 3,004,000,000 2,911,000,000 2,340,000,000 2,716,000,000 3,114,000,000 2,934,000,000 2,472,000,000 2,588,000,000 2,712,000,000 2,153,000,000 1,922,000,000 1,821,000,000 2,035,000,000 1,499,000,000 
        other non-current liabilities
                                           
        deferred income taxes
      2,544,000,000 2,547,000,000 2,501,000,000 2,451,000,000 2,406,000,000 2,296,000,000 2,270,000,000 2,234,000,000 2,178,000,000 2,179,000,000 2,125,000,000 2,016,000,000 1,960,000,000 1,975,000,000 1,924,000,000 1,919,000,000 1,846,000,000 1,828,000,000 1,826,000,000 1,814,000,000 1,599,000,000 1,535,000,000 1,524,000,000 1,530,000,000 1,572,000,000 1,511,000,000 1,510,000,000 1,452,000,000 3,147,000,000 3,107,000,000 3,068,000,000 2,976,000,000 2,974,000,000 2,890,000,000 2,854,000,000 2,798,000,000 61,000,000 
        deferred income
      981,000,000 961,000,000 979,000,000 996,000,000 1,013,000,000 1,129,000,000 1,048,000,000 1,062,000,000 1,079,000,000 1,096,000,000 1,113,000,000 1,130,000,000 1,147,000,000 1,164,000,000 1,181,000,000 1,204,000,000 1,221,000,000 1,239,000,000 1,256,000,000 1,274,000,000 1,330,000,000 1,351,000,000 1,368,000,000 1,385,000,000 1,398,000,000 1,415,000,000 1,429,000,000 1,446,000,000 1,432,000,000 1,449,000,000 1,464,000,000 1,483,000,000 1,500,000,000 1,518,000,000 1,538,000,000 1,553,000,000 1,571,000,000 
        pension and other postretirement
      508,000,000 526,000,000 546,000,000 554,000,000 450,000,000 474,000,000 484,000,000 491,000,000 465,000,000 457,000,000 473,000,000 684,000,000 908,000,000 954,000,000 979,000,000 1,007,000,000 998,000,000 1,054,000,000 1,079,000,000 1,100,000,000 1,051,000,000 1,092,000,000 1,115,000,000 1,102,000,000 998,000,000 1,033,000,000 1,044,000,000 1,049,000,000 1,076,000,000 1,074,000,000 1,106,000,000 1,106,000,000 1,155,000,000 1,190,000,000 1,204,000,000 1,202,000,000 755,000,000 
        asset retirement obligations
      326,000,000 314,000,000 310,000,000 306,000,000 296,000,000 292,000,000 277,000,000 273,000,000 266,000,000 262,000,000 256,000,000 253,000,000 225,000,000 220,000,000 217,000,000 210,000,000 208,000,000 205,000,000 197,000,000 190,000,000 186,000,000 183,000,000 220,000,000 217,000,000 211,000,000 202,000,000 199,000,000 196,000,000 176,000,000 170,000,000 167,000,000 161,000,000 167,000,000 165,000,000 132,000,000 184,000,000 245,000,000 
        environmental remediation costs
      249,000,000 235,000,000 243,000,000 254,000,000 258,000,000 258,000,000 277,000,000 279,000,000 276,000,000 283,000,000 284,000,000 298,000,000 297,000,000 276,000,000 284,000,000 292,000,000 333,000,000 338,000,000 327,000,000 338,000,000 317,000,000 333,000,000 330,000,000 339,000,000 333,000,000 355,000,000 351,000,000 358,000,000 364,000,000 373,000,000 386,000,000 398,000,000 388,000,000 383,000,000 394,000,000 406,000,000 275,000,000 
        total other non-current liabilities
      5,429,000,000 5,425,000,000 5,430,000,000 5,396,000,000 5,327,000,000 5,348,000,000 5,251,000,000 5,227,000,000 5,141,000,000 5,160,000,000 5,137,000,000 5,270,000,000 5,401,000,000 5,460,000,000 5,433,000,000 5,313,000,000 5,179,000,000 5,214,000,000 5,222,000,000 5,246,000,000 5,179,000,000 5,212,000,000 5,259,000,000 5,169,000,000 5,008,000,000 5,013,000,000 5,001,000,000 5,013,000,000 6,692,000,000 6,689,000,000 6,720,000,000 6,647,000,000 6,739,000,000 6,673,000,000 6,717,000,000 6,752,000,000 5,756,000,000 
        non-current debt
      8,839,000,000 8,312,000,000 9,059,000,000 9,184,000,000 9,111,000,000 8,310,000,000 8,235,000,000 8,215,000,000 7,764,000,000 7,888,000,000 8,033,000,000 7,922,000,000 7,486,000,000 7,274,000,000 7,401,000,000 7,478,000,000 7,081,000,000 7,159,000,000 6,715,000,000 6,716,000,000 6,718,000,000 6,282,000,000 5,487,000,000 5,368,000,000 5,096,000,000 5,261,000,000 5,160,000,000 5,196,000,000 4,767,000,000 4,773,000,000 4,507,000,000 4,510,000,000 4,399,000,000 4,507,000,000 4,519,000,000 4,530,000,000 2,794,000,000 
        non-current debt to affiliate
      2,000,000,000 2,000,000,000 800,000,000 800,000,000 808,000,000 8,000,000 8,000,000 8,000,000       3,000,000,000 3,000,000,000                      
        total non-current liabilities
      18,904,000,000 18,394,000,000 17,965,000,000 18,074,000,000 18,084,000,000 16,508,000,000 16,378,000,000 16,365,000,000 15,770,000,000 16,020,000,000 16,181,000,000 16,214,000,000 15,941,000,000 15,857,000,000 18,984,000,000 18,928,000,000 15,602,000,000 15,705,000,000 15,238,000,000 15,243,000,000 15,181,000,000 14,780,000,000 13,999,000,000 13,760,000,000 13,389,000,000 13,568,000,000 13,448,000,000 13,461,000,000 13,770,000,000 13,772,000,000 13,556,000,000 13,475,000,000 13,405,000,000 13,424,000,000 13,594,000,000 13,642,000,000 10,251,000,000 
        total liabilities
      26,043,000,000 24,838,000,000 24,173,000,000 23,313,000,000 22,011,000,000 21,163,000,000 20,948,000,000 20,781,000,000 19,573,000,000 19,366,000,000 19,481,000,000 19,543,000,000 19,053,000,000 18,815,000,000 21,776,000,000 21,997,000,000 19,786,000,000 18,940,000,000 18,685,000,000 18,830,000,000 18,029,000,000 17,592,000,000 17,152,000,000 16,764,000,000 16,300,000,000 15,908,000,000 16,164,000,000 16,575,000,000 16,704,000,000 16,244,000,000 16,144,000,000 16,187,000,000 15,558,000,000 15,346,000,000 15,415,000,000 15,677,000,000 11,750,000,000 
        commitments and contingencies
                                           
        equity
                                           
        stockholders’ equity:
                                           
        common stock, .01 par value...
      4,000,000 4,000,000 4,000,000 4,000,000 3,000,000 3,000,000 3,000,000 3,000,000 3,000,000 3,000,000 3,000,000 3,000,000 3,000,000 3,000,000 3,000,000 3,000,000 3,000,000 3,000,000 3,000,000 3,000,000 3,000,000 3,000,000 3,000,000 3,000,000 3,000,000 3,000,000 3,000,000 3,000,000 3,000,000 3,000,000 3,000,000 3,000,000 3,000,000 3,000,000 3,000,000 3,000,000  
        additional paid in capital
      17,708,000,000 17,705,000,000 17,702,000,000  17,699,000,000 17,695,000,000 17,697,000,000  17,688,000,000 17,687,000,000 17,683,000,000  17,675,000,000 17,671,000,000 13,667,000,000  13,664,000,000 13,664,000,000 13,667,000,000  13,659,000,000 13,659,000,000 13,658,000,000  13,656,000,000 13,655,000,000 13,654,000,000  13,656,000,000 13,655,000,000 13,653,000,000  13,652,000,000 13,651,000,000 13,653,000,000  11,378,000,000 
        treasury stock
      -47,000,000 -47,000,000 -47,000,000 -47,000,000 -47,000,000 -47,000,000 -47,000,000 -47,000,000 -47,000,000 -47,000,000 -47,000,000 -47,000,000 -16,000,000 -16,000,000 -16,000,000 -14,000,000 -14,000,000 -14,000,000 -12,000,000 -12,000,000 -12,000,000 -12,000,000 -12,000,000 -12,000,000 -12,000,000 -12,000,000 -8,000,000 -8,000,000 -8,000,000 -8,000,000 -5,000,000 -5,000,000 -4,000,000 -4,000,000    
        retained earnings
      2,059,000,000 2,195,000,000 2,196,000,000 2,015,000,000 1,789,000,000 1,900,000,000 1,985,000,000 1,910,000,000 1,934,000,000 2,003,000,000 1,819,000,000 1,714,000,000 1,723,000,000 1,790,000,000 1,864,000,000 1,666,000,000 1,684,000,000 1,733,000,000 1,784,000,000 1,681,000,000 1,599,000,000 1,594,000,000 1,620,000,000 1,528,000,000 1,536,000,000 1,550,000,000 1,579,000,000 1,475,000,000 1,605,000,000 1,639,000,000 1,649,000,000 1,544,000,000 1,471,000,000 1,496,000,000 1,527,000,000 1,449,000,000 1,332,000,000 
        accumulated other comprehensive income
      31,000,000 28,000,000 21,000,000                                   
        total stockholders’ equity
      19,755,000,000 19,885,000,000 19,876,000,000 19,648,000,000 19,439,000,000 19,477,000,000 19,507,000,000 19,380,000,000 19,351,000,000 19,410,000,000 19,181,000,000 19,076,000,000 19,102,000,000 19,239,000,000 15,381,000,000 15,209,000,000 15,223,000,000 15,278,000,000 15,326,000,000 15,237,000,000 15,150,000,000 15,135,000,000 15,158,000,000 15,104,000,000 15,128,000,000 15,135,000,000 15,171,000,000 15,077,000,000 15,202,000,000 15,227,000,000 15,239,000,000 15,109,000,000 15,038,000,000 15,052,000,000 15,111,000,000   
        non-controlling interests
      935,000,000 966,000,000 1,013,000,000  936,000,000 966,000,000 1,003,000,000  983,000,000 976,000,000 879,000,000  724,000,000 596,000,000 611,000,000  631,000,000 638,000,000 582,000,000  368,000,000 414,000,000 298,000,000  327,000,000 333,000,000 148,000,000  15,000,000 14,000,000 13,000,000  13,000,000 13,000,000 13,000,000  16,000,000 
        total equity
      20,690,000,000 20,851,000,000 20,889,000,000 20,676,000,000 20,375,000,000 20,443,000,000 20,510,000,000 20,342,000,000 20,334,000,000 20,386,000,000 20,060,000,000 19,961,000,000 19,826,000,000 19,835,000,000 15,992,000,000 15,826,000,000 15,854,000,000 15,916,000,000 15,908,000,000 15,586,000,000 15,518,000,000 15,549,000,000 15,456,000,000 15,403,000,000 15,455,000,000 15,468,000,000 15,319,000,000 15,096,000,000 15,217,000,000 15,241,000,000 15,252,000,000 15,122,000,000 15,051,000,000 15,065,000,000 15,124,000,000 15,066,000,000 12,647,000,000 
        total liabilities and equity
      46,733,000,000 45,689,000,000 45,062,000,000 43,989,000,000 42,386,000,000 41,606,000,000 41,458,000,000 41,123,000,000 39,907,000,000 39,752,000,000 39,541,000,000 39,504,000,000 38,879,000,000 38,650,000,000 37,768,000,000 37,823,000,000 35,640,000,000 34,856,000,000 34,593,000,000 34,416,000,000 33,547,000,000 33,141,000,000 32,608,000,000 32,167,000,000 31,755,000,000 31,376,000,000 31,483,000,000 31,671,000,000 31,921,000,000 31,485,000,000 31,396,000,000 31,309,000,000 30,609,000,000 30,411,000,000 30,539,000,000 30,743,000,000 24,397,000,000 
        as of december 31,
         2,023,000,000    2,022,000,000    2,021,000,000    2,020,000,000    2,019,000,000    2,018,000,000    2,017,000,000    2,016,000,000    2,015,000,000  
        notes payable to affiliate
         13,000,000    2,000,000    2,000,000                29,000,000          
        stockholders' equity:
                                           
        additional paid-in capital
         17,701,000,000    17,694,000,000    17,679,000,000    13,665,000,000    13,660,000,000    13,657,000,000    13,653,000,000    13,653,000,000    13,653,000,000  
        accumulated other comprehensive loss
         -25,000,000 -5,000,000 -74,000,000 -131,000,000 -180,000,000 -227,000,000 -236,000,000 -277,000,000 -273,000,000 -283,000,000 -209,000,000 -137,000,000 -111,000,000 -114,000,000 -108,000,000 -116,000,000 -95,000,000 -99,000,000 -109,000,000 -111,000,000 -72,000,000 -55,000,000 -61,000,000 -57,000,000 -46,000,000 -54,000,000 -62,000,000 -61,000,000 -86,000,000 -84,000,000 -94,000,000 -72,000,000 -52,000,000 -79,000,000 
        noncontrolling interests
         1,028,000,000    962,000,000    885,000,000    617,000,000    349,000,000    299,000,000    19,000,000    13,000,000    13,000,000  
        deferred income taxes regulatory
                             6,000,000 44,000,000 22,000,000 20,000,000 13,000,000 540,000,000 551,000,000 574,000,000 565,000,000 505,000,000 521,000,000 551,000,000 519,000,000 7,000,000 
        assets held for sale
                                79,000,000 357,000,000          
        tax equity financing arrangements - vies
                                 38,000,000 65,000,000 68,000,000 81,000,000 96,000,000      
        liabilities held for sale
                                7,000,000 137,000,000          
        property, plant and equipment, at cost
                                  28,144,000,000 27,724,000,000 27,320,000,000 27,063,000,000 26,426,000,000 26,187,000,000 25,919,000,000 25,745,000,000 22,286,000,000 
        less: accumulated depreciation
                                  -7,438,000,000 -7,305,000,000 -7,158,000,000 -6,986,000,000 -6,874,000,000 -6,722,000,000 -6,547,000,000 -6,372,000,000 -6,289,000,000 
        net property, plant and equipment in service
                                  20,706,000,000 20,419,000,000 20,162,000,000 20,077,000,000 19,552,000,000 19,465,000,000 19,372,000,000 19,373,000,000 15,997,000,000 
        construction work in progress
                                  1,976,000,000 1,871,000,000 1,635,000,000 1,471,000,000 1,572,000,000 1,365,000,000 1,326,000,000 1,338,000,000 1,032,000,000 
        tax equity financing arrangements
                                      104,000,000 107,000,000 109,000,000 107,000,000 112,000,000 
        accounts payable
                                         830,000,000 576,000,000 
        derivative liability
                                         91,000,000  
        total stockholders' equity
                                         15,053,000,000  
        stockholder’s equity:
                                           
        common stock
                                           
        total stockholder’s equity
                                          12,631,000,000 
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2024-09-30 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 
                                            
          cash flow from operating activities:
                                            
          net income
        172,000,000 128,000,000 322,000,000 368,000,000 31,000,000 51,000,000 215,000,000 127,000,000 106,000,000 161,000,000 427,000,000 134,000,000 104,000,000 84,000,000 321,000,000 152,000,000 81,000,000 76,000,000 230,000,000 216,000,000 139,000,000 105,000,000 216,000,000 116,000,000 134,000,000 110,000,000 238,000,000 -77,000,000 100,000,000 120,000,000 239,000,000 207,000,000 109,000,000 102,000,000 212,000,000 96,000,000 
          adjustments to reconcile net income to net cash from operating activities:
                                            
          depreciation and amortization
        327,000,000 310,000,000 298,000,000 290,000,000 303,000,000 285,000,000 280,000,000 274,000,000 279,000,000 271,000,000 261,000,000 258,000,000 259,000,000 250,000,000 247,000,000 239,000,000 255,000,000 242,000,000 251,000,000 253,000,000 237,000,000 222,000,000 222,000,000 211,000,000 226,000,000 215,000,000 203,000,000 216,000,000 205,000,000 206,000,000 197,000,000 183,000,000 203,000,000 213,000,000 205,000,000 170,000,000 
          regulatory assets/liabilities amortization and carrying cost
        45,000,000 -31,000,000 15,000,000 9,000,000 11,000,000 -27,000,000 -32,000,000 -28,000,000 -40,000,000 1,000,000 2,000,000 -147,000,000 41,000,000 13,000,000 21,000,000 -76,000,000 24,000,000 21,000,000 18,000,000 13,000,000 19,000,000 18,000,000 14,000,000              
          pension cost
        -1,000,000 -3,000,000 -3,000,000 -2,000,000 -4,000,000 -4,000,000 -3,000,000 17,000,000 6,000,000 -20,000,000 8,000,000 18,000,000 11,000,000 6,000,000 17,000,000 22,000,000 20,000,000 20,000,000 20,000,000 23,000,000 23,000,000 20,000,000 25,000,000 30,000,000 31,000,000 31,000,000 31,000,000 28,000,000 28,000,000 28,000,000 28,000,000 6,000,000 38,000,000 33,000,000 33,000,000 34,000,000 
          earnings from equity method investments
        -4,000,000 -5,000,000 -6,000,000 -1,000,000 1,000,000 -4,000,000 -2,000,000 -1,000,000 -2,000,000 -6,000,000 -253,000,000        6,000,000 -2,000,000 1,000,000 -1,000,000 -1,000,000 -2,000,000 -1,000,000 -5,000,000 -2,000,000 43,000,000 -1,000,000 -2,000,000 -3,000,000 -2,000,000 -2,000,000  
          distributions of earnings received from equity method investments
        6,000,000 5,000,000 3,000,000  7,000,000 8,000,000 6,000,000  6,000,000 8,000,000 5,000,000  5,000,000 5,000,000 4,000,000  6,000,000 6,000,000 3,000,000  8,000,000 2,000,000              
          unrealized (gain) loss on marked-to-market derivative contracts
          -17,000,000                           9,000,000 -27,000,000      
          deferred taxes
        7,000,000 20,000,000 4,000,000 -9,000,000 75,000,000 -21,000,000 -1,000,000 8,000,000 -48,000,000 7,000,000 51,000,000 -12,000,000 -22,000,000 58,000,000 -13,000,000 6,000,000 2,000,000 -1,000,000 10,000,000 39,000,000 121,000,000 -43,000,000 21,000,000 21,000,000 24,000,000 43,000,000 63,000,000 -417,000,000 24,000,000 47,000,000 95,000,000 48,000,000 85,000,000 138,000,000 106,000,000 77,000,000 
          other non-cash items
        -51,000,000 -34,000,000 -22,000,000 -38,000,000 -38,000,000 -6,000,000 -5,000,000 -20,000,000 -16,000,000   -41,000,000 -22,000,000 -14,000,000 -5,000,000 -48,000,000 -23,000,000 -13,000,000 1,000,000 -16,000,000 -21,000,000 -12,000,000 -2,000,000 17,000,000 -27,000,000 -9,000,000 -6,000,000 -22,000,000 -17,000,000 -8,000,000 -22,000,000 -3,000,000 -18,000,000    
          changes in operating assets and liabilities:
                                            
          current assets
        -261,000,000 284,000,000 -141,000,000 -332,000,000 -289,000,000 377,000,000 82,000,000 -477,000,000 -152,000,000 -25,000,000 -183,000,000 -160,000,000 -134,000,000 188,000,000 -169,000,000 -180,000,000 -168,000,000 191,000,000 -16,000,000 -62,000,000 -107,000,000 338,000,000 -43,000,000              
          noncurrent assets
        -4,000,000 -79,000,000 -255,000,000 -294,000,000 -45,000,000 34,000,000 -96,000,000 -131,000,000 297,000,000 -162,000,000 -127,000,000 120,000,000 -36,000,000 -36,000,000 -93,000,000 -18,000,000 -59,000,000 -38,000,000 -55,000,000 -128,000,000 10,000,000 6,000,000 -40,000,000              
          current liabilities
        250,000,000 -87,000,000 -32,000,000 261,000,000 49,000,000 -215,000,000 -242,000,000 290,000,000 -104,000,000 3,000,000 196,000,000 287,000,000 10,000,000 -50,000,000 39,000,000 136,000,000 85,000,000 56,000,000 -117,000,000 68,000,000 174,000,000 -203,000,000 -44,000,000              
          noncurrent liabilities
        -167,000,000 -39,000,000 -13,000,000 -77,000,000 -97,000,000 56,000,000 -2,000,000 79,000,000 -265,000,000 199,000,000 -2,000,000 72,000,000 -84,000,000 -95,000,000 4,000,000 -56,000,000 -21,000,000 17,000,000 -26,000,000 76,000,000 -134,000,000 72,000,000 -52,000,000              
          net cash from operating activities
        301,000,000 486,000,000 153,000,000 162,000,000 27,000,000 526,000,000 204,000,000 141,000,000 89,000,000 417,000,000 388,000,000 567,000,000 143,000,000 426,000,000 425,000,000 196,000,000 208,000,000 577,000,000 307,000,000 349,000,000 427,000,000 502,000,000 315,000,000 474,000,000 334,000,000 386,000,000 597,000,000 441,000,000 397,000,000 484,000,000 441,000,000 345,000,000 308,000,000 511,000,000 397,000,000 398,000,000 
          cash flow from investing activities:
                                            
          capital expenditures
        -919,000,000 -1,063,000,000 -872,000,000 -894,000,000 -443,000,000 -799,000,000 -836,000,000 -579,000,000 -537,000,000 -592,000,000 -811,000,000 -1,079,000,000 -633,000,000 -641,000,000 -623,000,000 -821,000,000 -615,000,000 -603,000,000 -742,000,000 -695,000,000 -708,000,000 -912,000,000 -425,000,000 -614,000,000 -422,000,000 -352,000,000 -399,000,000 -712,000,000 -635,000,000 -544,000,000 -525,000,000 -671,000,000 -362,000,000 -398,000,000 -276,000,000 -412,000,000 
          free cash flows
        -618,000,000 -577,000,000 -719,000,000 -732,000,000 -416,000,000 -273,000,000 -632,000,000 -438,000,000 -448,000,000 -175,000,000 -423,000,000 -512,000,000 -490,000,000 -215,000,000 -198,000,000 -625,000,000 -407,000,000 -26,000,000 -435,000,000 -346,000,000 -281,000,000 -410,000,000 -110,000,000 -140,000,000 -88,000,000 34,000,000 198,000,000 -271,000,000 -238,000,000 -60,000,000 -84,000,000 -326,000,000 -54,000,000 113,000,000 121,000,000 -14,000,000 
          contributions in aid of construction
        3,000,000 57,000,000 40,000,000 11,000,000 24,000,000 58,000,000 19,000,000 33,000,000 10,000,000 50,000,000 30,000,000 77,000,000 32,000,000 12,000,000 9,000,000 13,000,000 16,000,000 12,000,000 7,000,000 38,000,000 15,000,000 11,000,000 10,000,000 24,000,000 13,000,000 16,000,000 7,000,000 26,000,000 10,000,000 15,000,000 6,000,000 14,000,000 14,000,000 33,000,000 8,000,000 13,000,000 
          proceeds from sale of assets
        4,000,000 2,000,000   11,000,000 6,000,000  7,000,000 6,000,000 3,000,000  1,000,000 -3,000,000 8,000,000  4,000,000 2,000,000 6,000,000  11,000,000 -1,000,000 3,000,000  -4,000,000 69,000,000 67,000,000          
          distributions received from equity method investments
        2,000,000 2,000,000  2,000,000 2,000,000  2,000,000 2,000,000  137,000,000 3,000,000 1,000,000  2,000,000 1,000,000  -1,000,000 3,000,000 2,000,000              
          other investments and equity method investments
        -145,000,000 -77,000,000 -116,000,000 -209,000,000 -81,000,000 -7,000,000 -11,000,000 -9,000,000 -10,000,000 -7,000,000 -172,000,000 -6,000,000 -3,000,000 270,000,000 -39,000,000 -322,000,000 -11,000,000 -14,000,000 -23,000,000 -12,000,000 -21,000,000 -27,000,000 -116,000,000 -13,000,000 -16,000,000   9,000,000 -9,000,000 2,000,000 -11,000,000 9,000,000 -12,000,000 6,000,000 31,000,000 
          net cash from investing activities
        -1,055,000,000 -1,083,000,000 -944,000,000 -1,075,000,000 -467,000,000 -738,000,000 -819,000,000 -528,000,000 -528,000,000 -544,000,000 -948,000,000 -975,000,000 -464,000,000 -362,000,000 -639,000,000 -902,000,000 -604,000,000 -603,000,000 -749,000,000 -557,000,000 -704,000,000 -926,000,000 -526,000,000 -531,000,000 -427,000,000 -283,000,000 -323,000,000 -674,000,000 -622,000,000 -531,000,000 -514,000,000 -662,000,000 -328,000,000 -336,000,000 -201,000,000 -905,000,000 
          cash flow from financing activities:
                                            
          non-current debt issuances
           673,000,000    575,000,000 67,000,000 149,000,000 486,000,000    400,000,000 223,000,000   500,000,000                 
          non-current debt issuance with affiliate
                                           
          repayments of non-current debt
        -1,000,000 -11,000,000 -3,000,000 -75,000,000 -100,000,000 -199,000,000 -4,000,000 -33,000,000 -118,000,000 -125,000,000 -89,000,000 -2,000,000 -300,000,000 -2,000,000 -500,000,000 -8,000,000 -500,000,000 -3,000,000 -2,000,000 -150,000,000 -151,000,000 -43,000,000 -152,000,000 -63,000,000 -2,000,000 -240,000,000 -42,000,000 -19,000,000 -4,000,000 -272,000,000 -38,000,000 -3,000,000 -42,000,000 -73,000,000 
          receipts of other short-term debt
        287,000,000 72,000,000 514,000,000                187,000,000                  
          repayment of short-term debt with affiliates
                                            
          repayments of financing leases
        -1,000,000 -4,000,000 -1,000,000 -3,000,000 -1,000,000 -1,000,000 -1,000,000 -1,000,000 -1,000,000 -1,000,000 -6,000,000 -1,000,000 -1,000,000 -3,000,000 -1,000,000 -2,000,000 -1,000,000 -5,000,000 -1,000,000 -1,000,000 -1,000,000 -4,000,000 -21,000,000              
          issuance of common stock
        -2,000,000   -1,000,000 3,999,000,000 -1,000,000         -2,000,000 -1,000,000    
          distributions to noncontrolling interests
        -3,000,000 -9,000,000 -39,000,000 -3,000,000 -6,000,000 -4,000,000 -3,000,000 -2,000,000 -2,000,000 -5,000,000 -1,000,000 -1,000,000 -4,000,000 -2,000,000 -3,000,000 -1,000,000 -3,000,000 -1,000,000 -16,000,000 -37,000,000 -7,000,000 -3,000,000 -16,000,000 -38,000,000 -11,000,000 -11,000,000          
          contributions from noncontrolling interests
        5,000,000 3,000,000 53,000,000 124,000,000 4,000,000 1,000,000 74,000,000 1,000,000 8,000,000 125,000,000 13,000,000 189,000,000 131,000,000 10,000,000 68,000,000 244,000,000 2,000,000 128,000,000 3,000,000 4,000,000 -1,000,000 214,000,000 6,000,000          
          dividends paid
        -170,000,000 -170,000,000 -170,000,000 -171,000,000 -170,000,000 -170,000,000 -170,000,000 -171,000,000 -170,000,000 -170,000,000 -170,000,000 -170,000,000 -171,000,000 -136,000,000 -136,000,000 -137,000,000 -136,000,000 -136,000,000 -136,000,000 -137,000,000 -136,000,000 -137,000,000 -135,000,000 -136,000,000 -134,000,000 -133,000,000 -134,000,000 -134,000,000 -133,000,000 -134,000,000 -134,000,000 -134,000,000 -133,000,000    
          net cash from financing activities
        766,000,000 581,000,000 852,000,000 923,000,000 463,000,000 198,000,000 618,000,000 396,000,000 88,000,000 -110,000,000 -266,000,000 471,000,000 2,000,000 852,000,000 -436,000,000 2,067,000,000 451,000,000 45,000,000 290,000,000 284,000,000 213,000,000 558,000,000 206,000,000 60,000,000 76,000,000 -91,000,000 -275,000,000 245,000,000 217,000,000 54,000,000 12,000,000 224,000,000 -194,000,000 -182,000,000 -220,000,000 -116,000,000 
          net increase in cash, cash equivalents and restricted cash
        12,000,000 -16,000,000 61,000,000 10,000,000   3,000,000         1,361,000,000 55,000,000   76,000,000 -64,000,000                
          cash, cash equivalents and restricted cash, beginning of period
        94,000,000  72,000,000  1,477,000,000  1,467,000,000  184,000,000  43,000,000  46,000,000  96,000,000      
          cash, cash equivalents and restricted cash, end of period
        12,000,000 -16,000,000 155,000,000  23,000,000 -14,000,000 75,000,000  -351,000,000 -237,000,000 651,000,000  -319,000,000 916,000,000 817,000,000  55,000,000 19,000,000 32,000,000  -64,000,000 134,000,000 38,000,000  -17,000,000 12,000,000 45,000,000  -8,000,000 7,000,000 35,000,000      
          supplemental cash flow information
                                            
          cash paid for interest, net of amounts capitalized
        102,000,000 80,000,000 103,000,000 121,000,000 53,000,000 108,000,000 56,000,000 73,000,000 56,000,000 89,000,000 55,000,000 78,000,000 58,000,000 92,000,000 51,000,000 72,000,000 58,000,000 78,000,000 70,000,000 83,000,000 58,000,000 67,000,000 58,000,000 65,000,000 46,000,000 64,000,000 49,000,000 58,000,000 45,000,000 54,000,000 45,000,000 47,000,000 68,000,000 57,000,000 57,000,000 17,000,000 
          cash paid for income taxes, net of transferred tax credits
                                            
          as of june 30, 2023
                                          
          other comprehensive income, net of tax of 26
                                            
          comprehensive income
                                            
          dividends declared, 0.44/share
                                            
          stock-based compensation
                                   -4,000,000 1,000,000 3,000,000 1,000,000     
          as of september 30, 2023
                                            
          as of june 30, 2024
                                           
          other comprehensive income, net of tax of 1
                                            
          release of common stock held in trust
                 -288,334,000,000 292,594,000,000   4,047,000,000 213,000,000    213,000,000                  
          as of september 30, 2024
                                            
          unrealized gain on marked-to-market derivative contracts
                    10,000,000 21,000,000 53,000,000  7,000,000 2,000,000 -18,000,000   -20,000,000 -3,000,000  10,000,000 4,000,000 -8,000,000          
          non-current debt issuance with affiliates
                                            
          cash paid for income taxes
               2,000,000 3,000,000 5,000,000 5,000,000 -6,000,000 3,000,000 1,000,000 4,000,000  2,000,000 2,000,000         4,000,000 1,000,000 5,000,000 3,000,000 2,000,000 2,000,000 5,000,000  
          as of march 31, 2023
         386,640,918,000,000   386,640,918,000,000                              
          other comprehensive income, net of tax of 20
                                            
          as of march 31, 2024
         386,906,260,000,000                                  
          other comprehensive income, net of tax of 2
                                            
          proceeds from notes receivable from affiliates
              1,000,000     2,000,000 -3,000,000 5,000,000  2,000,000                  
          receipts of other short-term debt with affiliates
          500,000,000                                  
          cash paid (refunded) for income taxes
          3,000,000                                  
          as of december 31, 2022
          386,628,586,000,000    386,628,586,000,000                              
          other comprehensive loss, net of tax of 17
                                            
          as of december 31, 2023
          386,770,915,000,000                                  
          other comprehensive income, net of tax of 17
                                            
          cash flow from operating activities
                                            
          adjustments to reconcile net income to net cash from operating activities
                                            
          accretion expenses
                               2,000,000 4,000,000 3,000,000 3,000,000 2,000,000 3,000,000 2,000,000 3,000,000 3,000,000 3,000,000 1,000,000 3,000,000 8,000,000 
          distribution of earnings from equity method investments
                                            
          unrealized (gains) losses on marked to market derivative contracts
                                            
          income from divestment and disposal of property
                                            
          cash flow from investing activities
                                            
          proceeds from sale of property, plant and equipment
                                   3,000,000 6,000,000 2,000,000 1,000,000     
          (payments to) receipts from affiliates
                                            
          cash distribution from equity method investments
                               4,000,000 3,000,000 4,000,000 3,000,000 5,000,000 4,000,000 4,000,000 3,000,000      
          cash flow from financing activities
                                            
          repayment of non-current debt with affiliate
                                          
          receipts (repayments) of other short-term debt
             574,000,000 722,000,000 27,000,000               211,000,000      412,000,000 -47,000,000 205,000,000      
          repurchase of common stock
                   -31,000,000 -2,000,000             -1,000,000    
          cash, cash equivalents and restricted cash, beginning of year
                                            
          cash, cash equivalents and restricted cash, end of year
                                            
          cash
           -10,000,000                                 
          balances, december 31, 2020
                                            
          other comprehensive loss, net of tax of
                                            
          dividends declared, 1.76/share
                                            
          balances, december 31, 2021
                                            
          other comprehensive income, net of tax of 29
                                            
          balances, december 31, 2022
                                            
          other comprehensive income, net of tax of 55
                                            
          balances, december 31, 2023
                                            
          unrealized loss on marked-to-market derivative contracts
              4,000,000    3,000,000                          
          proceeds and refund from disposal of assets
                                            
          as of june 30, 2022
                                          
          other comprehensive income, net of tax of 3
                                            
          as of september 30, 2022
                                            
          net decrease in cash, cash equivalents and restricted cash
                  -826,000,000    -650,000,000    -152,000,000    -5,000,000 3,000,000   -1,000,000 12,000,000 -8,000,000 7,000,000 -61,000,000      
          as of march 31, 2022
             386,624,231,000,000   386,624,231,000,000                          
          other comprehensive income, net of tax of 16
                                            
          cash (refunded) paid for income taxes
              -1,000,000                              
          as of december 31, 2021
              386,568,104,000,000    386,568,104,000,000                          
          unrealized losses on marked to market derivative contracts
                                         -6,000,000 29,000,000  
          gain from divestment and disposal of property
                                            
          proceeds from sale of equity method and other investment
                                          
          balances, december 31, 2019
                                            
          adoption of accounting standards
                                            
          as of june 30, 2021
                                          
          other comprehensive income, net of tax of
                                            
          as of september 30, 2021
                                            
          repayments of other short-term debt
                 -1,000,000 -161,000,000                      1,000,000 -160,000,000  
          as of march 31, 2021
                 309,369,894,000,000   309,369,894,000,000                      
          as of december 31, 2020
                  309,077,300,000,000    309,077,300,000,000                      
          unrealized losses (gains) on marked to market derivative contracts
                                            
          payments to affiliates
                                            
          balances, december 31, 2018
                                            
          (earnings) losses from equity method investments
                    1,000,000 -4,000,000 -1,000,000                      
          (repayments) receipts of other short-term debt
                    -6,000,000 -301,000,000          251,000,000 -415,000,000 -124,000,000          
          as of june 30, 2020
                                          
          as of september 30, 2020
                                            
          as of march 31, 2020
                     309,005,485,000,000   309,005,485,000,000                  
          other comprehensive income, net of tax of 4
                                            
          as of december 31, 2019
                      309,005,272,000,000    309,005,272,000,000                  
          income from assets held for sale
                               1,000,000 10,000,000 5,000,000          
          balances, december 31, 2017
                                            
          dividends declared, 1.744/share
                                            
          earnings (losses) from equity method investments
                        -1,000,000                    
          as of june 30, 2019
                                          
          as of september 30, 2019
                                            
          as of march 31, 2019
                         309,005,272,000,000                  
          as of december 31, 2018
                          309,005,272,000,000                  
          payments on tax equity financing arrangements
                                   -29,000,000 -24,000,000 -33,000,000 -27,000,000 -13,000,000 -22,000,000 -36,000,000 -17,000,000 -43,000,000 
          balances, december 31, 2016
                                            
          other comprehensive income, net of tax of 24.7
                                            
          dividends declared, 1.728/share
                                            
          transaction with noncontrolling interests
                                            
          cash paid/(refund) for income taxes
                            1,000,000 1,000,000 2,000,000              
          as of june 30, 2018
                                           
          other comprehensive income, net of tax of 1.9
                                            
          as of september 30, 2018
                                            
          other comprehensive income, net of tax of 3.7
                                            
          non-current note issuance
                             994,000,000 194,000,000            
          as of march 31, 2018
                                            
          dividends declared, 0.432/share
                                            
          other comprehensive income, net of tax of 0.7
                                            
          regulatory assets/liabilities amortization
                                 15,000,000 19,000,000 9,000,000 10,000,000 9,000,000 19,000,000 -80,000,000 46,000,000 42,000,000 41,000,000 28,000,000 
          regulatory assets/liabilities carrying cost
                                 1,000,000 2,000,000 3,000,000 1,000,000 1,000,000 10,000,000 1,000,000 -1,000,000 3,000,000 10,000,000 10,000,000 
          amortization of debt premium
                                            
          gain on disposal of property and equity method investment
                                   -1,000,000       
          accounts receivable and unbilled revenues
                               -99,000,000 -59,000,000 131,000,000 -70,000,000 -227,000,000 36,000,000 132,000,000 11,000,000 -230,000,000     
          inventories
                               9,000,000 -31,000,000 -28,000,000 36,000,000 45,000,000 -19,000,000 -25,000,000 11,000,000 -13,000,000     
          other assets
                                            
          accounts payable and accrued liabilities
                               121,000,000 68,000,000 -53,000,000 -51,000,000 186,000,000 63,000,000 -13,000,000 -155,000,000 132,000,000     
          other liabilities
                                            
          taxes accrued
                               8,000,000 19,000,000 32,000,000 -29,000,000 31,000,000 6,000,000 -5,000,000 9,000,000 -14,000,000     
          regulatory assets/liabilities
                               -97,000,000 1,000,000 -48,000,000 65,000,000 -90,000,000 22,000,000 66,000,000 -45,000,000 120,000,000     
          receipts from affiliates
                                          6,000,000  
          non-current note issuances
                               273,000,000             
          (repayments) proceeds of other short-term debt
                                            
          repayments of capital leases
                               -1,000,000 -4,000,000 -8,000,000 -1,000,000 -1,000,000 -4,000,000 -27,000,000 -6,000,000 -2,000,000 -3,000,000 -1,000,000 -7,000,000 
          cash (refund) payment for income taxes
                                            
          other assets/liabilities
                                -88,000,000 -69,000,000 96,000,000  -74,000,000 -86,000,000 64,000,000      
          repurchases of common stock
                                            
          issuances of common stock
                                            
          cash (refund)/paid for income taxes
                                2,000,000 4,000,000 -17,000,000          
          amortization of debt (premium) discount
                                  -1,000,000          
          impairment
                                            
          amortization of debt (premium) cost
                                       -11,000,000     
          government grants
                                          1,000,000 8,000,000 
          acquisition of business, net of 48 million cash acquired
                                            
          receipts from (payments to) affiliates
                                       4,000,000    
          proceeds (repayments) of other short-term debt
                                            
          dividends to noncontrolling interests
                                            
          transaction with noncontrolling interest
                                            
          amortization of debt cost
                                     -4,000,000 2,000,000   -8,000,000 -7,000,000  
          impairment of non-current assets
                                            
          contribution from noncontrolling interests
                                            
          unrealized gains on marked to market derivative contracts
                                            
          net increase in cash and cash equivalents
                                        -214,000,000 -7,000,000 -24,000,000 -623,000,000 
          cash and cash equivalents, beginning of period
                                        427,000,000  
          cash and cash equivalents, end of period
                                        -214,000,000 -7,000,000 403,000,000  
          gain on sale of equity method investment
                                         -3,000,000 -31,000,000  
          changes in current operating assets and liabilities:
                                            
          decrease in accounts receivable and unbilled revenues
                                         69,000,000 16,000,000  
          decrease in inventories
                                         -10,000,000 75,000,000  
          increase in other assets/liabilities
                                            
          decrease in accounts payable and accrued liabilities
                                         96,000,000 -108,000,000  
          increase in taxes accrued
                                         -16,000,000 9,000,000 -16,000,000 
          increase in regulatory assets/liabilities
                                         -168,000,000 -67,000,000 -25,000,000 
          proceeds from asset sale
                                            
          increase in other assets
                                          -76,000,000  
          decrease in other liabilities
                                          -51,000,000  
          proceeds from sale of equity method investment
                                          54,000,000  
          changes in current operating assets and liabilities, net of effects of acquisition
                                            
          decrease (increase) in accounts receivable and unbilled revenues
                                            
          decrease (increase) in inventories
                                            
          decrease in other assets
                                            
          increase in accounts payable
                                            
          increase in other liabilities
                                           -73,000,000 
          proceeds from disposal of property, plant and equipment
                                            
          proceeds from sale of businesses, net of cash
                                           
          capital contributions from parent
                                            
          proceeds from sales leaseback
                                            
          cash and cash equivalents, beginning of year
                                            
          cash and cash equivalents, end of year
                                            
          cash paid (refund) for income taxes
                                            
          changes in current operating assets and liabilities
                                            
          decrease (increase) in other assets
                                            
          decrease in accounts payable
                                            
          payments (receipts) to affiliates