7Baggers

Southwest Gas Holdings, Inc
(NYSE:SWX) 

SWX stock logo

Southwest Gas Holdings, Inc., through its subsidiaries, purchases, distributes, and transports natural gas in Arizona, Nevada, and California. The company operates in two segments, Natural Gas Operations and Utility Infrastructure Services. As of December 31, 2020, it had 2,123,000 residential, comm...

Founded: 1931
Full Time Employees: 8,944
Sector: Utilities
Industry: Utilities-Regulated Gas

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At a glance:
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Quarterly
Annual
    Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-09-30 2018-06-30 2018-03-31 2017-09-30 2017-06-30 2017-03-31 
                                       
      operating revenues:
                                       
      regulated operations revenues
    585,119,000 480,735,000 316,911,000 396,318,000 746,416,000 553,059,000 359,131,000 510,093,000 1,052,933,000 702,216,000 394,603,000 487,866,000 950,011,000 648,998,000 367,122,000 440,030,000 743,532,000                   
      total operating revenues
    585,119,000 480,735,000 316,911,000 1,120,370,000 1,296,497,000 1,270,137,000 1,079,184,000 1,182,168,000 1,580,956,000 1,367,531,000 1,169,492,000 1,293,645,000 1,603,304,000 1,420,892,000 1,125,588,000 1,146,120,000 1,267,409,000 1,084,427,000 888,696,000 821,421,000 885,907,000 914,080,000 791,226,000 757,247,000 836,320,000 848,137,000 725,230,000 713,011,000 833,539,000 668,146,000 670,883,000 754,330,000 593,153,000 560,469,000 654,737,000 
      operating expenses:
                                       
      net cost of gas sold
    108,154,000 68,238,000 42,685,000 102,134,000 284,579,000 165,817,000 111,712,000 242,479,000 629,997,000 344,623,000 170,056,000 231,053,000 507,537,000 251,291,000 100,991,000 147,860,000 298,918,000 134,680,000 63,710,000 76,496,000 156,021,000 78,222,000 36,321,000 67,473,000 160,821,000 92,310,000 35,068,000 65,182,000 192,604,000 49,903,000 83,466,000 185,732,000 45,539,000 69,421,000 146,879,000 
      operations and maintenance
    133,001,000 141,119,000 134,777,000 138,696,000 131,251,000 134,978,000 131,416,000 134,623,000 135,146,000 139,528,000 126,851,000 128,795,000 148,908,000 157,436,000 154,236,000 175,791,000 149,303,000 138,696,000 122,927,000 104,833,000 106,690,000 103,152,000 101,764,000 99,419,000 103,781,000 102,960,000 109,652,000 105,293,000 106,245,000 105,508,000 105,435,000 102,351,000 102,278,000 103,060,000 109,150,000 
      depreciation and amortization
    99,603,000 89,021,000 79,073,000 103,163,000 127,913,000 115,865,000 107,361,000 96,072,000 119,142,000 111,163,000 105,520,000 111,705,000 112,520,000 122,866,000 116,933,000 108,010,000 122,646,000 103,371,000 91,380,000 82,848,000 93,442,000 87,018,000 80,139,000 77,217,000 87,653,000 79,986,000 75,370,000 70,342,000 77,539,000 62,156,000 61,307,000 62,478,000 58,529,000 58,082,000 72,478,000 
      taxes other than income taxes
    25,015,000 23,691,000 23,368,000 23,250,000 23,761,000 22,551,000 22,283,000 21,228,000 22,903,000 21,770,000 21,147,000 21,604,000 24,230,000 22,605,000 23,356,000 22,606,000 24,816,000 20,209,000 20,109,000 19,338,000 20,687,000 15,953,000 15,787,000 15,342,000 16,378,000 15,688,000 15,308,000 15,126,000 16,206,000 15,036,000 14,666,000 15,257,000 14,046,000 14,497,000 14,782,000 
      total operating expenses
    365,773,000 322,069,000 279,903,000 1,024,914,000 1,096,075,000 1,089,196,000 1,017,700,000 1,098,947,000 1,422,831,000 1,229,402,000 1,109,261,000 1,208,874,000 1,468,105,000 1,709,381,000 1,075,651,000 1,100,460,000 1,098,915,000 970,899,000 865,396,000 762,155,000 712,454,000 761,285,000 736,962,000 689,675,000 687,947,000 709,933,000 686,972,000 658,142,000 693,059,000 628,465,000 617,545,000 624,770,000 563,021,000 517,061,000 535,245,000 
      operating income
    219,346,000 158,666,000 37,008,000 95,456,000 200,422,000 180,941,000 61,484,000 83,221,000 158,125,000 138,129,000 60,231,000 84,771,000 135,199,000 -288,489,000 49,937,000 45,660,000 168,494,000 113,528,000 23,300,000 59,266,000 173,453,000 152,795,000 54,264,000 67,572,000 148,373,000 138,204,000 38,258,000 54,869,000 140,480,000 39,681,000 53,338,000 129,560,000 30,132,000 43,408,000 119,492,000 
      yoy
    9.44% -12.31% -39.81% 14.70% 26.75% 30.99% 2.08% -1.83% 16.96% -147.88% 20.61% 85.66% -19.76% -354.11% 114.32% -22.96% -2.86% -25.70% -57.06% -12.29% 16.90% 10.56% 41.84% 23.15% 5.62% 248.29% -28.27% -57.65% 366.22% -8.59% -55.36%     
      qoq
    38.24% 328.73% -61.23% -52.37% 10.77% 194.29% -26.12% -47.37% 14.48% 129.33% -28.95% -37.30% -146.86% -677.71% 9.37% -72.90% 48.42% 387.24% -60.69% -65.83% 13.52% 181.58% -19.69% -54.46% 7.36% 261.24% -30.27% -60.94% 254.02% -25.60% -58.83% 329.97% -30.58% -63.67%  
      other income and
                                       
      net interest deductions
    -45,743,000 -46,294,000 -49,003,000 -71,612,000 -72,281,000 -73,938,000 -77,731,000 -73,769,000 -71,605,000 -73,607,000 -71,998,000 -69,347,000 -77,334,000 -76,808,000 -64,373,000 -53,206,000 -48,363,000 -37,997,000 -31,298,000 -25,939,000 -23,964,000 -28,336,000 -28,311,000 -26,450,000 -28,380,000 -28,564,000 -27,434,000 -26,831,000 -26,397,000 -24,548,000 -23,652,000 -22,631,000 -19,494,000 -18,655,000 -18,714,000 
      other income
    10,991,000 17,439,000 15,367,000 18,421,000 8,715,000 4,750,000 16,758,000 14,939,000 18,121,000 18,777,000 14,464,000 19,604,000 18,460,000 -6,191,000 1,593,000 -2,835,000 1,244,000 476,000 -3,112,000 -1,311,000 448,000 4,257,000 1,799,000 7,925,000 -20,770,000 3,258,000 -1,158,000 1,146,000 6,839,000 889,000 -2,706,000 -4,334,000 2,876,000 2,047,000 3,865,000 
      total other
    -34,752,000 -28,539,500 -33,636,000      -53,484,000                           
      income from continuing operations before income taxes
    184,594,000 129,811,000 3,372,000                                 
      income tax expense
    46,220,000 59,978,000 -803,000 52,594,000 27,669,000 17,352,000 -2,152,000 4,181,000 17,079,000 9,658,000 -1,270,000 4,769,000 28,675,000 -93,953,000 -1,525,000 -4,300,000 24,125,000 4,830,000 -1,816,000 5,542,000 31,092,000 23,680,000 6,689,000 9,166,000 26,218,000 20,992,000 3,141,000 6,352,000 25,538,000 3,691,000 5,429,000 24,301,000 3,094,000 8,679,000 35,638,000 
      income from continuing operations
    138,374,000 69,833,000 4,175,000                                 
      loss from discontinued operations, net of income tax
                                       
      net income
    138,374,000 68,363,000 267,959,000 -10,329,000 109,187,000 94,401,000 2,663,000 20,210,000 87,562,000 73,641,000 3,967,000 30,259,000 47,650,000 -277,535,000 -11,318,000 -6,081,000 97,250,000 71,177,000 -9,294,000 26,474,000 118,845,000 105,036,000 21,063,000 39,881,000 73,005,000 91,906,000 6,525,000 22,832,000 95,384,000 12,331,000 21,551,000 78,294,000 10,420,000 18,121,000 69,005,000 
      yoy
    26.73% -27.58% 9962.30% -151.11% 24.70% 28.19% -32.87% -33.21% 83.76% -126.53% -135.05% -597.60% -51.00% -489.92% 21.78% -122.97% -18.17% -32.24% -144.12% -33.62% 62.79% 14.29% 222.80% 74.67% -23.46% 645.32% -69.72% -70.84% 815.39% -31.95% -68.77%     
      qoq
    102.41% -74.49% -2694.24% -109.46% 15.66% 3444.91% -86.82% -76.92% 18.90% 1756.34% -86.89% -36.50% -117.17% 2352.16% 86.12% -106.25% 36.63% -865.84% -135.11% -77.72% 13.15% 398.68% -47.19% -45.37% -20.57% 1308.52% -71.42% -76.06% 673.53% -42.78% -72.47% 651.38% -42.50% -73.74%  
      net loss attributable to noncontrolling interests
        -4,683,000                               
      net income attributable to southwest gas holdings, inc.
    138,374,000 68,363,000 270,476,000 -12,883,000 113,870,000 92,456,000 289,000 18,333,000 87,737,000 72,869,000 3,231,000 28,878,000 45,911,000 -280,584,000 -12,309,000 -6,575,000 96,178,000 69,943,000 -11,576,000 25,119,000 117,293,000 103,544,000 18,273,000 37,965,000 72,542,000 91,718,000 5,353,000 22,056,000 94,809,000 12,331,000 21,551,000 79,091,000 10,204,000 17,864,000 69,308,000 
      basic earnings per share:
                                       
      continuing operations
    1.91 0.96 0.06                                 
      discontinued operations
     -0.02 3.69                                 
      net earnings per share - basic
    1.91 0.94 3.75                                 
      diluted earnings per share:
                                       
      net earnings per share - diluted
    1.91 0.94 3.74                                 
      weighted-average shares:
                                       
      basic
    72,441 72,162 72,209 72,088 72,012 71,841 71,880 71,839 71,728 70,787 71,626 71,536 68,265 65,558 67,157 67,045 60,737 59,145 59,688 58,607 57,600 55,998 56,271 55,462 55,310 54,245          
      diluted
    72,566 72,337 72,405 72,088 72,138 72,032 72,086 72,015 71,882 70,990 71,851 71,722 68,419 65,558 67,325 67,190 60,854 59,259 59,816 58,710 57,679 56,076 56,357 55,532 55,363 54,312          
      income from discontinued operations, net of income tax
     -1,470,000 263,784,000                                 
      net income attributable to noncontrolling interests
      -2,517,000 2,554,000  1,945,000 2,374,000 1,877,000 -175,000 772,000 736,000 1,381,000 1,739,000 3,049,000 991,000 494,000 1,072,000       1,916,000 463,000 188,000 1,172,000 776,000 575,000   -797,000 216,000 257,000 -303,000 
      utility infrastructure services revenues
       724,052,000 550,081,000 717,078,000 720,053,000 672,075,000 528,023,000 665,315,000 774,889,000 805,779,000 653,293,000 771,894,000 758,466,000 706,090,000 523,877,000 633,213,000 632,848,000 528,625,000 363,975,000 539,590,000 580,392,000 494,813,000 333,493,000 468,566,000 515,250,000 454,300,000 312,862,000       
      utility infrastructure services expenses
       657,671,000 528,571,000 649,985,000 644,928,000 604,545,000 515,643,000 612,318,000 685,687,000 715,717,000 603,680,000 699,758,000 680,135,000 646,193,000 503,232,000 573,943,000 567,270,000 478,640,000 335,614,000 476,940,000 502,951,000 430,224,000 319,314,000 418,989,000 451,574,000 402,199,000 300,465,000       
      total other income and
       -53,191,000 -63,566,000 -69,188,000 -60,973,000 -58,830,000  -54,830,000 -57,534,000 -49,743,000 -58,874,000 -82,999,000 -62,780,000 -56,041,000 -47,119,000 -37,521,000 -34,410,000 -27,250,000 -23,516,000 -24,079,000 -26,512,000 -18,525,000 -49,150,000 -25,306,000 -28,592,000 -25,685,000 -19,558,000 -23,659,000 -26,358,000 -26,965,000 -16,618,000 -16,608,000 -14,849,000 
      income before income taxes
       42,265,000 136,856,000 111,753,000 511,000 24,391,000 104,641,000 83,299,000 2,697,000 35,028,000 76,325,000 -371,488,000 -12,843,000 -10,381,000 121,375,000 76,007,000 -11,110,000 32,016,000 149,937,000 128,716,000 27,752,000 49,047,000 99,223,000 112,898,000 9,666,000 29,184,000 120,922,000 16,022,000 26,980,000 102,595,000 13,514,000 26,800,000 104,643,000 
      earnings per share attributable to southwest gas holdings, inc.:
                                       
      basic
       -0.18 1.58 1.29  0.26 1.22 1.02 0.05 0.4 0.67 -4.29 -0.18 -0.1 1.58 1.16 -0.19 0.43 2.04 1.84 0.32 0.68 1.31           
      diluted
       -0.18 1.58 1.28  0.25 1.22 1.03 0.04 0.4 0.67 -4.29 -0.18 -0.1 1.58 1.16 -0.19 0.43 2.03 1.83 0.32 0.68 1.31           
      goodwill impairment and loss on sale
                71,230,000                       
      earnings per share:
                                       
      basic
       -0.18 1.58 1.29  0.26 1.22 1.02 0.05 0.4 0.67 -4.29 -0.18 -0.1 1.58 1.16 -0.19 0.43 2.04 1.84 0.32 0.68 1.31           
      diluted
       -0.18 1.58 1.28  0.25 1.22 1.03 0.04 0.4 0.67 -4.29 -0.18 -0.1 1.58 1.16 -0.19 0.43 2.03 1.83 0.32 0.68 1.31           
      gas operating revenues
                     451,214,000 255,848,000 292,796,000 521,932,000 374,490,000 210,834,000 262,434,000 502,827,000 379,571,000 209,980,000 258,711,000 520,677,000 217,523,000 275,679,000 494,313,000 213,059,000 260,162,000 462,602,000 
      net income attributable to noncontrolling interest
                     1,297,250 2,282,000 1,355,000 1,552,000 1,492,000 2,790,000             
      basic earnings per share
                             0.565 0.1 0.41 1.78 0.25 0.44 1.63 0.21 0.38 1.46 
      diluted earnings per share
                             0.565 0.1 0.41 1.77 0.25 0.44 1.63 0.21 0.37 1.45 
      average number of common shares
                             13,499 54,670 53,935 53,369 49,493 48,826 48,416    
      average shares
                             13,515.75 54,748 54,003 53,424 49,553 48,880 48,459    
      construction revenues
                                 450,623,000 395,204,000 260,017,000 380,094,000 300,307,000 192,135,000 
      construction expenses
                                 395,862,000 352,671,000 258,952,000 342,629,000 272,001,000 191,956,000 
      dividends declared per share
                                 0.52 0.52 0.52 0.495 0.495 0.495 
      average number of common shares outstanding
                                    47,628 47,571 47,530 
      average shares outstanding
                                    47,986 47,884 47,864 
                                       
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-09-30 2018-06-30 2018-03-31 2017-09-30 2017-06-30 2017-03-31 
                                         
        assets
                                         
        regulated operations plant:
                                         
        gas plant
      11,659,807,000 11,517,031,000 11,289,621,000 11,132,152,000 10,989,346,000 10,844,895,000 10,652,224,000 10,458,923,000 10,253,377,000 10,140,362,000 9,892,766,000 9,741,687,000 9,583,630,000 9,453,907,000 11,166,691,000 11,049,050,000 10,891,910,000 8,901,575,000 8,742,806,000 8,664,624,000 8,479,295,000 8,384,000,000 8,219,196,000 8,086,597,000 7,949,283,000 7,813,221,000 7,550,855,000 7,404,724,000 7,268,255,000 6,928,471,000 6,810,737,000 6,709,858,000 6,440,547,000 6,349,303,000 6,280,654,000 
        less: accumulated depreciation
      -3,113,118,000 -3,063,363,000 -3,025,110,000 -2,984,121,000 -2,952,957,000 -2,914,457,000 -2,937,435,000 -2,896,703,000 -2,863,941,000 -2,822,669,000 -2,780,482,000 -2,743,845,000 -2,712,093,000 -2,674,157,000 -3,536,274,000 -3,496,191,000 -3,443,053,000 -2,538,508,000 -2,499,488,000 -2,481,016,000 -2,453,924,000 -2,419,348,000 -2,394,730,000 -2,367,836,000 -2,341,561,000 -2,313,050,000 -2,303,864,000 -2,282,770,000 -2,257,017,000 -2,275,376,000 -2,260,793,000 -2,248,307,000 -2,218,796,000 -2,202,909,000 -2,194,660,000 
        construction work in progress
      259,867,000 236,871,000 231,095,000 201,170,000 176,485,000 178,647,000 243,375,000 226,210,000 245,032,000 200,549,000 272,969,000 254,872,000 250,892,000 244,750,000 273,662,000 218,638,000 216,262,000 183,485,000 153,100,000 151,358,000 215,395,000 211,429,000 231,219,000 217,616,000 202,935,000 185,026,000 288,573,000 248,270,000 204,370,000 216,735,000 167,114,000 142,840,000 164,030,000 111,041,000 91,428,000 
        net regulated operations plant
      8,806,556,000 8,690,539,000 8,495,606,000 8,349,201,000 8,212,874,000 8,109,085,000 7,958,164,000 7,788,430,000 7,634,468,000 7,518,242,000 7,385,253,000 7,252,714,000 7,122,429,000 7,024,500,000 7,904,079,000 7,771,497,000 7,665,119,000 6,546,552,000                  
        other property and investments
      177,632,000 178,826,000 172,494,000 1,169,351,000 1,172,072,000 1,191,148,000 1,193,062,000 1,234,942,000 1,252,861,000 152,658,000 1,254,065,000 1,267,762,000 1,250,327,000 169,397,000 1,311,334,000 1,312,701,000 1,313,291,000 153,093,000 1,305,334,000 860,701,000 842,672,000 143,611,000 825,069,000 809,111,000 785,522,000 784,173,000 768,685,000 761,652,000 716,722,000 466,500,000 462,236,000 442,771,000 369,303,000 362,891,000 351,032,000 
        current assets:
                                         
        cash and cash equivalents
      484,752,000 576,645,000 778,631,000 355,627,000 406,295,000 363,789,000 456,643,000 599,639,000 457,952,000 71,154,000 104,939,000 221,367,000 82,085,000 51,823,000 175,272,000 215,963,000 624,666,000 38,691,000 186,690,000 47,565,000 92,345,000 41,070,000 23,945,000 199,591,000 60,965,000 49,539,000 28,480,000 38,446,000 97,037,000 69,170,000 34,730,000 65,115,000 59,152,000 29,702,000 43,401,000 
        accounts receivable
      168,790,000 170,601,000 110,575,000 705,312,000 693,834,000 722,622,000 673,219,000 796,238,000 843,133,000 269,195,000 903,365,000 936,161,000 903,262,000 234,081,000 779,558,000 750,794,000 755,947,000 169,666,000 692,135,000 512,385,000 479,184,000 146,861,000 513,017,000 480,077,000 423,013,000 474,097,000 434,153,000 417,639,000 429,248,000 347,571,000 357,881,000 335,982,000 301,792,000 281,882,000 247,179,000 
        accrued utility revenue
      65,900,000 101,600,000 51,700,000 50,500,000 61,900,000 96,600,000 47,800,000 46,400,000 58,500,000 93,000,000 44,600,000 43,200,000 56,900,000 88,100,000 41,300,000 40,000,000 52,000,000 84,900,000 39,700,000 38,500,000 50,500,000 82,400,000 36,500,000 35,800,000 48,100,000 79,100,000 35,800,000 34,900,000 47,000,000 34,600,000 34,200,000 47,300,000 34,100,000 33,600,000 45,900,000 
        income taxes receivable
      6,317,000 9,611,000  6,215,000 6,030,000 2,414,000 7,401,000 9,661,000 7,174,000 26,000 4,268,000 6,804,000 8,136,000 103,000 15,580,000 19,147,000 16,937,000 7,826,000 32,554,000 23,839,000 6,523,000 11,155,000 7,934,000 4,077,000 7,503,000 31,751,000 26,611,000 15,190,000 14,069,000 49,603,000 18,256,000 15,549,000 5,462,000 6,253,000 4,512,000 
        deferred purchased gas costs
       5,214,000 99,000  7,000,000 13,937,000 9,270,000 39,777,000 198,682,000 552,885,000 687,137,000 785,588,000 970,339,000 450,120,000 381,351,000 354,571,000 367,954,000 291,145,000 240,827,000 235,104,000 238,886,000 2,053,000    44,412,000 49,804,000 58,240,000 65,242,000   18,739,000 6,230,000 5,956,000 9,142,000 
        materials, supplies, and gas inventories
      93,656,000  91,154,000 90,776,000                                
        prepaid and other current assets
      238,259,000 234,598,000 211,334,000 216,651,000 256,822,000 265,113,000 261,063,000 239,887,000 214,516,000 188,138,000 229,696,000 220,291,000 210,309,000 401,789,000 316,578,000 263,363,000 229,072,000 242,243,000 200,700,000 149,402,000 133,466,000 152,748,000 151,432,000 147,655,000 133,338,000 180,957,000 190,554,000 187,666,000 177,784,000       
        total current assets
      1,057,674,000 1,192,092,000 1,243,493,000 1,425,081,000 1,431,881,000 1,464,475,000 1,455,396,000 1,731,602,000 1,779,957,000 1,195,774,000 1,998,485,000 2,240,213,000 2,258,024,000 1,228,146,000 1,709,639,000 1,643,838,000 2,046,576,000 835,502,000 1,392,606,000 1,006,795,000 1,000,904,000 436,287,000 732,828,000 867,200,000 672,919,000 859,856,000 765,402,000 752,081,000 830,380,000 721,193,000 696,059,000 663,933,000 538,918,000 483,585,000 454,404,000 
        noncurrent assets:
                                         
        goodwill
      11,155,000 11,155,000 11,155,000 786,504,000 781,287,000 781,201,000 787,595,000 786,175,000 787,206,000 11,155,000 787,433,000 789,617,000 787,334,000 11,155,000 1,742,967,000 1,750,472,000 1,773,671,000 10,095,000 791,902,000 348,173,000 346,553,000 10,095,000 340,197,000 337,978,000 333,943,000 343,023,000 339,948,000 345,872,000 364,482,000 176,059,000 174,233,000 176,485,000 147,865,000 143,583,000 140,974,000 
        deferred charges and other assets
      353,629,000 356,865,000 405,831,000 483,808,000 477,690,000 474,751,000 477,900,000 442,024,000 432,193,000 390,742,000 410,793,000 400,517,000 391,944,000 370,483,000 434,236,000 444,332,000 450,786,000 405,021,000 483,107,000 488,042,000 497,187,000 490,562,000 475,037,000 474,737,000 489,419,000 496,943,000 429,716,000 436,035,000 441,166,000 419,829,000 425,555,000 438,682,000 411,655,000 416,261,000 426,600,000 
        total noncurrent assets
      364,784,000 368,020,000 416,986,000 1,270,312,000 1,258,977,000 1,259,128,000 1,268,328,000 1,230,370,000 1,220,708,000 401,897,000 1,198,479,000 1,190,233,000 1,179,393,000 381,638,000 2,177,525,000 2,194,972,000 2,224,501,000 415,116,000 1,275,277,000 836,560,000 844,303,000 500,657,000 816,075,000 813,347,000 824,127,000 840,822,000 770,560,000 782,928,000 806,722,000 597,073,000 601,040,000 616,538,000 560,987,000 561,209,000 568,897,000 
        total assets
      10,406,646,000 10,429,477,000 10,328,579,000 12,213,945,000 12,075,804,000 12,023,836,000 11,874,950,000 11,985,344,000 11,887,994,000 9,268,571,000 11,836,282,000 11,950,922,000 11,810,173,000 8,803,681,000 13,102,577,000 12,923,008,000 13,249,487,000 7,950,263,000 10,369,635,000 9,039,022,000 8,928,645,000 7,256,636,000 8,429,657,000 8,426,035,000 8,093,225,000 8,170,048,000 7,840,211,000 7,666,885,000 7,569,432,000 6,654,596,000 6,476,393,000 6,327,633,000 5,855,070,000 5,665,239,000 5,551,913,000 
        capitalization and liabilities
                                         
        capitalization:
                                         
        common stock
      74,003,000 73,854,000 73,811,000 73,608,000 73,541,000 73,413,000 73,370,000 73,339,000 73,295,000 49,112,000 73,145,000 73,103,000 72,961,000 49,112,000 68,694,000 68,634,000 68,479,000 49,112,000 62,009,000 60,718,000 59,625,000 49,112,000 58,089,000 57,540,000 56,756,000 56,637,000 56,254,000 55,951,000 55,021,000 51,053,000 50,756,000 49,967,000 49,362,000 49,213,000 49,179,000 
        additional paid-in capital
      2,901,448,000 2,898,965,000 2,893,066,000 2,872,681,000 2,726,758,000 2,721,343,000 2,714,958,000 2,709,674,000 2,547,485,000 2,156,577,000 2,539,759,000 2,534,223,000 2,524,631,000 1,622,969,000 2,283,250,000 2,279,493,000 2,273,837,000 1,618,911,000 1,823,889,000 1,733,572,000 1,660,108,000 1,410,345,000 1,559,814,000 1,523,630,000 1,470,411,000 1,466,937,000 1,437,733,000 1,409,923,000 1,332,793,000 1,045,840,000 1,021,508,000 965,480,000 924,213,000 911,095,000 909,362,000 
        accumulated other comprehensive loss
      -34,100,000 -34,546,000 -37,597,000 -41,355,000 -48,866,000 -49,218,000 -43,875,000 -45,615,000 -46,222,000 -40,548,000 -43,523,000 -41,458,000 -43,949,000 -38,261,000 -50,232,000 -45,528,000 -43,972,000 -46,913,000 -55,951,000 -55,688,000 -58,388,000 -61,135,000 -52,783,000 -55,617,000 -59,073,000 -56,732,000          
        retained earnings
      1,160,327,000 1,022,846,000 999,399,000 769,723,000 827,453,000 758,649,000 710,940,000 755,367,000 781,683,000 1,018,474,000 669,364,000 696,958,000 742,513,000 935,355,000 1,111,203,000 1,156,253,000 1,190,738,000 906,827,000 1,079,869,000 1,108,279,000 1,112,377,000 835,146,000 1,054,118,000 1,085,742,000 1,079,801,000 1,039,072,000 977,498,000 1,002,070,000 1,009,809,000 902,730,000 916,275,000 920,454,000 784,934,000 801,222,000 803,522,000 
        total equity
      4,101,678,000 3,961,119,000 3,928,679,000 4,115,805,000 3,751,445,000 3,681,422,000 3,632,250,000 3,666,964,000 3,356,241,000 3,183,615,000 3,238,745,000 3,262,826,000 3,296,156,000 2,569,175,000 3,412,915,000 3,458,852,000 3,489,082,000 2,527,937,000 2,909,816,000 2,846,881,000 2,773,722,000 2,233,468,000 2,619,238,000 2,611,295,000 2,547,895,000 2,505,914,000 2,423,710,000 2,419,363,000 2,346,548,000 1,945,781,000 1,932,567,000 1,876,376,000 1,713,396,000 1,714,256,000 1,713,119,000 
        long-term debt, less current maturities
      3,433,929,000 3,433,012,000 3,507,120,000 4,396,867,000 4,327,895,000 4,348,340,000 4,382,146,000 5,063,577,000 4,648,958,000 3,501,543,000 5,235,539,000 5,284,844,000 4,577,600,000 3,251,296,000 5,865,591,000 4,588,454,000 4,559,758,000 2,440,603,000 3,573,783,000 2,478,823,000 2,696,570,000 2,438,206,000 2,685,722,000 2,639,317,000 2,310,084,000 2,300,482,000 2,462,116,000 2,373,003,000 2,106,274,000 2,123,641,000 2,037,743,000 1,998,127,000 1,731,981,000 1,685,698,000 1,564,132,000 
        total capitalization
      7,535,607,000 7,394,131,000 7,435,799,000 8,520,371,000 8,087,013,000 8,037,422,000 8,022,102,000 8,738,212,000 8,012,860,000 6,685,158,000 8,619,441,000 8,705,850,000 8,000,782,000 5,820,471,000 9,393,198,000 8,169,962,000 8,184,824,000 4,968,540,000 6,667,146,000 5,526,233,000 5,675,578,000 4,671,674,000 5,412,244,000 5,337,533,000 4,942,984,000 4,890,938,000 4,970,180,000 4,875,548,000 4,535,228,000 4,069,422,000 3,970,310,000 3,874,503,000 3,445,377,000 3,420,103,000 3,300,776,000 
        current liabilities:
                                         
        current maturities of long-term debt
      75,000,000 75,000,000  28,101,000 28,932,000 30,018,000 30,264,000 31,194,000 42,770,000  42,335,000 42,120,000 41,907,000  41,485,000 41,276,000 291,069,000 275,000,000 297,271,000 319,417,000 67,334,000  44,903,000 171,668,000 169,574,000 163,512,000 38,165,000 36,807,000 34,915,000 33,429,000 31,928,000 24,867,000 28,453,000 27,236,000 26,064,000 
        accounts payable
      122,008,000 225,732,000  254,570,000 253,316,000 331,807,000 226,960,000 264,289,000 264,620,000 215,744,000 255,251,000 273,950,000 310,748,000 497,046,000 308,824,000 306,753,000 256,606,000 234,070,000 222,959,000 182,304,000 182,805,000 161,646,000 175,507,000 189,373,000 182,182,000 238,921,000 188,896,000 196,915,000 231,343,000 172,237,000 188,156,000 175,905,000 159,382,000 135,738,000 134,238,000 
        customer deposits
      67,607,000 67,249,000  67,117,000 66,334,000 63,876,000 60,750,000 57,399,000 52,632,000 48,460,000 47,206,000 48,414,000 50,350,000 51,182,000 55,033,000 53,991,000 57,620,000 56,127,000 51,816,000 44,088,000 67,121,000 67,920,000 69,122,000 69,898,000 69,938,000 69,165,000 68,897,000 69,165,000 68,593,000 68,100,000 69,247,000 69,610,000 70,162,000 71,195,000 72,227,000 
        accrued general taxes
      78,907,000 54,384,000  50,727,000 86,748,000 59,353,000 64,005,000 63,769,000 96,676,000 58,053,000 75,932,000 62,803,000 101,579,000 67,094,000 72,941,000 55,883,000 83,897,000 53,064,000 60,656,000 51,712,000 72,103,000 48,640,000 59,958,000 48,220,000 73,105,000 48,160,000 52,361,000 42,778,000 69,423,000 51,734,000 42,826,000 63,307,000 48,998,000 40,545,000 62,790,000 
        accrued interest
      38,329,000 35,319,000  40,156,000 39,427,000 40,405,000 44,514,000 36,575,000 39,985,000 34,955,000 46,837,000 38,530,000 45,641,000 29,569,000 41,484,000 35,697,000 42,421,000 22,926,000 38,600,000 19,653,000 34,571,000 20,495,000 35,478,000 21,525,000 34,755,000 21,329,000 34,745,000 21,431,000 31,439,000 30,594,000 20,512,000 24,906,000 24,543,000 17,150,000 24,876,000 
        dividends declared
       44,779,000                                  
        other current liabilities
      99,995,000 117,350,000  360,908,000 347,069,000 382,897,000 422,245,000 408,364,000 577,237,000 271,899,000 527,201,000 574,769,000 592,022,000 150,817,000 404,703,000 387,359,000 413,872,000 146,422,000 384,442,000 317,970,000 282,745,000 146,046,000 322,928,000 289,395,000 266,763,000 264,950,000 279,931,000 269,674,000 278,552,000 229,521,000 262,113,000 208,479,000 197,854,000 175,043,000 149,529,000 
        total current liabilities
      729,958,000 929,898,000  1,414,505,000 1,806,505,000 1,832,097,000 1,702,742,000 1,096,154,000 1,718,664,000 630,822,000 1,052,529,000 1,057,408,000 1,610,486,000 1,020,708,000 1,313,728,000 2,350,417,000 2,630,198,000 1,037,609,000 1,355,234,000 1,272,403,000 1,036,035,000 556,525,000 839,222,000 918,017,000 979,815,000 1,079,861,000 782,344,000 726,504,000 974,478,000 712,710,000 663,647,000 602,851,000 656,406,000 490,035,000 496,828,000 
        deferred income taxes and other credits:
                                         
        deferred income taxes and investment tax credits
      1,022,534,000 977,312,000  927,486,000 837,584,000 808,782,000 790,825,000 792,244,000 784,491,000 749,836,000 742,078,000 740,886,000 733,199,000 683,948,000 774,465,000 785,258,000 803,771,000 638,828,000 789,141,000 694,719,000 671,574,000 581,100,000 639,002,000 631,388,000 624,888,000 599,840,000 577,928,000 563,478,000 556,063,000 519,146,000 510,536,000 500,289,000 894,011,000 891,217,000 879,631,000 
        accumulated removal costs
      504,000,000 496,000,000  486,000,000 479,000,000 472,000,000 465,000,000 463,000,000 457,000,000 458,000,000 454,000,000 452,000,000 450,000,000 445,000,000 500,052,000 494,554,000 488,908,000 424,000,000 419,000,000 409,000,000 407,000,000 404,000,000 401,000,000 401,000,000 399,000,000 395,000,000 392,000,000 389,000,000 385,000,000 322,000,000 319,000,000 317,000,000 312,000,000 310,000,000 309,000,000 
        other deferred credits and other long-term liabilities
      614,547,000 632,136,000  865,583,000 865,702,000 873,535,000 894,281,000 895,734,000 914,979,000 744,755,000 968,234,000 994,778,000 1,015,706,000 833,554,000 1,121,134,000 1,122,817,000 1,141,786,000 881,286,000 1,139,114,000 1,136,667,000 1,138,458,000 1,043,337,000 1,138,189,000 1,138,097,000 1,146,538,000 1,204,409,000 1,117,759,000 1,112,355,000 1,118,663,000 1,031,318,000 1,012,900,000 1,032,990,000 547,276,000 553,884,000 565,678,000 
        total deferred income taxes and other credits
      2,141,081,000 2,105,448,000  2,279,069,000 2,182,286,000 2,154,317,000 2,150,106,000 2,150,978,000 2,156,470,000 1,952,591,000 2,164,312,000 2,187,664,000 2,198,905,000 1,962,502,000 2,395,651,000 2,402,629,000 2,434,465,000 1,944,114,000 2,347,255,000 2,240,386,000 2,217,032,000 2,028,437,000 2,178,191,000 2,170,485,000 2,170,426,000 2,199,249,000 2,087,687,000 2,064,833,000 2,059,726,000 1,872,464,000 1,842,436,000 1,850,279,000 1,753,287,000 1,755,101,000 1,754,309,000 
        total capitalization and liabilities
      10,406,646,000 10,429,477,000  12,213,945,000 12,075,804,000 12,023,836,000 11,874,950,000 11,985,344,000 11,887,994,000 9,268,571,000 11,836,282,000 11,950,922,000 11,810,173,000 8,803,681,000 13,102,577,000 12,923,008,000 13,249,487,000 7,950,263,000 10,369,635,000 9,039,022,000 8,928,645,000 7,256,636,000 8,429,657,000 8,426,035,000 8,093,225,000 8,170,048,000 7,840,211,000 7,666,885,000 7,569,432,000 6,654,596,000 6,476,393,000 6,327,633,000 5,855,070,000 5,665,239,000 5,551,913,000 
        materials, supplies & gas inventories
       93,823,000                                  
        current assets classified as discontinued operations
                                         
        noncurrent assets classified as discontinued operations
                                         
        total equity attributable to southwest gas holdings, inc. stockholders
       3,961,119,000 3,928,679,000 3,674,657,000 3,578,886,000 3,504,187,000 3,455,393,000 3,492,765,000                            
        noncontrolling interest
         441,148,000 172,559,000 177,235,000 176,857,000 174,199,000                     -452,000 -452,000 -452,000 -3,162,000 -2,295,000 -2,312,000 -2,262,000 
        redeemable noncontrolling interest
         7,699,000 7,673,000 7,660,000 7,706,000 7,671,000           183,547,000 200,529,000 205,286,000  107,284,000 86,921,000 85,005,000 84,542,000 84,354,000 83,182,000 82,406,000     20,149,000 23,525,000 
        commitments and contingencies
                                         
        short-term debt
         260,000,000 690,000,000 680,000,000 663,000,000 111,000,000 644,000,000  57,500,000 15,500,000 467,500,000 225,000,000 381,000,000 1,462,747,000 1,474,000,000 250,000,000 272,000,000 318,000,000 310,000,000 57,000,000 54,000,000 58,000,000 157,000,000 211,000,000 30,000,000  188,000,000 31,500,000 22,500,000 22,500,000 110,500,000 2,500,000  
        current liabilities of discontinued operations
                                         
        noncurrent liabilities classified as discontinued operations
                                         
        deferred income taxes
           3,176,000 2,833,000 2,171,000 1,309,000  253,000 99,000 115,000  322,000 168,000 44,000  268,000 345,000 563,000  841,000 632,000 765,000 856,000 896,000 1,021,000 1,074,000 1,185,000 1,252,000 1,371,000 1,467,000 1,365,000 1,323,000 
        income taxes payable
         3,895,000 5,492,000 1,482,000 2,019,000 2,241,000 744,000  267,000 1,322,000 739,000  4,516,000 1,725,000 10,416,000  27,490,000 19,259,000 19,356,000  1,084,000   2,069,000 1,319,000   2,572,000  12,906,000 1,543,000   
        current assets held for sale
               21,376,000 24,480,000 26,802,000 26,993,000                       
        redeemable noncontrolling interests
              7,661,000  145,157,000 158,180,000 127,026,000  114,692,000 122,656,000 135,984,000                   
        receivable from parent
                   2,130,000    1,031,000                  
        payable to parent
               1,711,000            142,000              
        current liabilities held for sale
                                         
        utility plant:
                                         
        net utility plant
                        6,396,418,000 6,334,966,000 6,240,766,000 6,176,081,000 6,055,685,000 5,936,377,000 5,810,657,000 5,685,197,000 5,535,564,000 5,370,224,000 5,215,608,000 4,869,830,000 4,717,058,000 4,604,391,000 4,385,862,000 4,257,554,000 4,177,580,000 
        total southwest gas holdings, inc. equity
                               2,505,914,000 2,423,710,000 2,419,363,000 2,347,000,000 1,946,233,000 1,933,019,000 1,879,538,000 1,715,691,000 1,716,568,000 1,715,381,000 
        accumulated other comprehensive income
                                -47,775,000 -48,581,000 -50,623,000 -53,390,000 -55,520,000 -56,363,000 -42,818,000 -44,962,000 -46,682,000 
        prepaids and other current assets
                                   220,249,000 250,992,000 181,248,000 132,182,000 126,192,000 104,270,000 
        acquisition adjustments
                                      81,000 119,000 158,000 
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 
                 
          cash flow from operating activities:
                 
          net income
        138,374,000 68,363,000 267,959,000 -10,329,000 109,187,000 94,401,000 2,663,000 20,210,000 87,562,000 
          less: income from discontinued operations, net of income tax
         -1,470,000        
          income from continuing operations, net of income tax
        138,374,000 69,833,000        
          adjustments to reconcile net income to net cash from operating activities:
                 
          depreciation and amortization
        99,603,000 89,021,000 10,627,000 103,163,000 127,913,000 115,865,000 107,361,000 96,072,000 119,142,000 
          deferred income taxes
        45,082,000 69,971,000 -45,892,000 62,142,000 31,891,000 17,611,000 -2,278,000 6,834,000 30,707,000 
          share-based compensation expense
        4,471,000         
          equity afudc
        -2,033,000 -1,397,000 -1,501,000 -1,558,000 -1,353,000 -1,049,000 -1,874,000 -1,835,000 -1,839,000 
          changes in current assets and liabilities:
                 
          accounts receivable, net of allowances
        1,811,000 -60,026,000 75,355,000 -10,565,000 27,647,000 -60,578,000 125,451,000 35,538,000 26,110,000 
          accrued utility revenue
        35,700,000 -49,900,000 -1,200,000 11,400,000 34,700,000 -48,800,000 -1,400,000 12,100,000 34,500,000 
          deferred purchased gas costs
        -56,759,000 -51,488,000 -5,941,000 66,844,000 53,865,000 48,606,000 98,170,000 280,227,000 354,203,000 
          accounts payable
        -73,149,000 79,014,000 1,381,000 -10,324,000 -56,899,000 89,189,000 -17,751,000 -12,149,000 -69,863,000 
          accrued taxes
        27,817,000 -20,096,000 25,414,000 -53,564,000 27,786,000 -158,000 2,275,000 -33,896,000 33,311,000 
          other current assets and liabilities
        -16,113,000 -24,689,000 -2,007,000 -40,263,000 -30,730,000 -49,638,000 -9,194,000 -105,276,000 -28,763,000 
          changes in deferred charges and other assets
        -22,806,000 -19,642,000 -29,239,000 5,045,000 -18,192,000 -4,506,000 -11,621,000 11,021,000 -15,982,000 
          changes in other liabilities and deferred credits
        -19,863,000 -215,000 -1,190,000 1,496,000 -20,506,000 -3,395,000 9,679,000 -7,052,000 -25,396,000 
          net cash from operating activities of continuing operations
        162,135,000 85,025,000        
          net cash provided (used) by operating activities of discontinued operations
                 
          net cash from operating activities
        162,135,000 81,568,000 56,897,000 126,343,000 291,268,000 201,444,000 304,051,000 306,576,000 543,709,000 
          capital expenditures
          free cash flows
        162,135,000 81,568,000 56,897,000 126,343,000 291,268,000 201,444,000 304,051,000 306,576,000 543,709,000 
          cash flow from investing activities:
                 
          capital expenditures and property additions
        -208,720,000 -237,515,000        
          changes in customer advances
        6,339,000 -1,223,000 -707,000 4,152,000 -199,000 -1,191,000 139,000 -3,285,000 -1,658,000 
          other
        -1,244,000 -1,262,000 -2,038,000 1,295,000 1,050,000 3,055,000 3,737,000 492,000 1,689,000 
          net cash from investing activities of continuing operations
        -203,625,000 -240,000,000        
          net cash provided (used) in investing activities of discontinued operations
                 
          net cash provided (used) in investing activities
        -203,625,000         
          cash flow from financing activities:
                 
          issuance of common stock
        2,148,000 2,045,000 13,167,000 2,220,000 2,295,000 2,203,000 1,877,000 2,432,000 2,372,000 
          dividends paid
        -44,807,000 -44,654,000 -44,716,000 -44,609,000 -44,530,000 -44,483,000 -44,460,000 -44,436,000 -44,389,000 
          change in short-term portion of credit facility
         -35,000,000 -105,000,000 10,000,000 17,000,000 2,000,000 17,000,000 15,500,000 
          withholding remittance - share-based compensation
        -4,852,000  931,000 -3,544,000  -24,000 -481,000 -1,971,000 
          other, including principal payments on finance leases
        -2,892,000 -395,000 5,026,000 -6,624,000 -2,685,000 -2,738,000 -6,116,000 -2,904,000 -3,190,000 
          net cash from financing activities of continuing operations
        -50,403,000 -43,454,000        
          net cash provided (used) in financing activities of discontinued operations
                 
          net cash from financing activities
        -50,403,000 -43,554,000 -244,717,000 32,120,000 -62,128,000 -59,570,000 -185,709,000 61,250,000 7,694,000 
          effects of currency translation in discontinued operations
                
          change in cash and cash equivalents, including discontinued operations
        -91,893,000 -201,986,000        
          cash and cash equivalents, including discontinued operations, at beginning of period
        576,645,000        
          cash and cash equivalents, including discontinued operations, at end of period
        484,752,000 -201,986,000        
          impairment of assets and other charges
                 
          gains on sale of property and equipment
         584,000 -1,811,000 -377,000 -983,000 -656,000 -1,051,000 -944,000 
          net cash from operating activities of discontinued operations
                 
          proceeds from the sale of business, net of cash sold
                 
          proceeds from the sale of property
           21,377,000 
          net cash from investing activities of discontinued operations
                 
          net cash from investing activities
           -209,370,000 -186,645,000 -234,246,000 -261,435,000 -226,097,000 -199,790,000 
          issuance of long-term debt
           74,176,000 39,756,000 73,361,000 42,854,000 181,657,000 55,897,000 
          change in long-term credit facility and commercial paper
                 
          issuance of short-term debt
                 
          repayment of short-term debt
         -225,000,000       
          withholding remittance – share-based compensation
                 
          net cash from financing activities of discontinued operations
                 
          change in cash and cash equivalents included in current assets held for sale
                 
          includes change in cash and cash equivalent of centuri of 49 million for the year ended december 31, 2025.
                 
          supplemental information:
                 
          interest paid, net of amounts capitalized - continuing operations
                 
          interest paid, net of amounts capitalized - discontinued operations
                 
          interest paid, net of amounts capitalized
           67,891,000 69,975,000 74,753,000 64,762,000 74,092,000 65,281,000 
          increase of capital expenditures in accounts payable or other current liabilities- continuing operations
                 
          increase of capital expenditures in accounts payable or other current liabilities - discontinued operations
                 
          increase of capital expenditures in accounts payable or other current liabilities
                 
          equity afudc capitalized in regulated operations plant - continuing operations
                 
          equity afudc capitalized in regulated operations plant - discontinued operations
                 
          equity afudc capitalized in regulated operations plant
                 
          changes in undistributed stock compensation
          -1,011,000 4,667,000 6,336,000 4,879,000 3,226,000 5,833,000 961,000 
          includes change in cash and cash equivalent of centuri of 49 million.
                 
          construction expenditures and property additions
           -220,123,000 -187,496,000 -236,110,000 -265,311,000 -223,304,000 -221,198,000 
          redemption of redeemable noncontrolling interest
             -77,000    
          retirement of long-term debt
           -11,705,000 -63,420,000 -103,896,000 -179,464,000 -329,559,000 -16,488,000 
          proceeds from the sale of centuri stock
                 
          proceeds from centuri ipo
                 
          effects of currency translation on cash and cash equivalents
           239,000 11,000 -482,000 97,000 -42,000 -197,000 
          change in cash and cash equivalents
           -50,668,000 42,506,000 -92,854,000 -142,996,000 141,687,000 351,416,000 
          cash and cash equivalents at beginning of period
           363,789,000 106,536,000 
          cash and cash equivalents at end of period
           -50,668,000 406,295,000 -92,854,000 -142,996,000 141,687,000 457,952,000 
          income taxes paid
           10,651,000 2,418,000 1,797,000 2,339,000 3,936,000 1,833,000 
          acquisition of businesses, net of cash acquired
                 
          proceeds from centuri initial public offering
             -300,000 -2,376,000   
          cash and cash equivalents included in current assets held for sale at beginning of period
                 
          centuri distribution to redeemable noncontrolling interest
               -92,802,000 -37,000 
          other changes in short-term debt
                 
          change in credit facility and commercial paper
                 
          change in short-term debt
                 
          gains on sale of equipment
                 
          change in short-term portion of credit facilities
                 
          principal payments on finance lease obligations
                 
          other inflows
                 
          redemption of centuri shares from noncontrolling parties
                 
          gains on sale
                 
          changes in other assets and deferred charges
                 
          miscellaneous inflows
                 
          afudc
                 
          principal payments on capital lease obligations
                 
          withholding remittance—share-based compensation
                 
          restricted cash