v3.26.1
Revenues (Tables)
 6 Months Ended
Jun. 30, 2026
Revenue from Contract with Customer [Abstract]  
Schedule of Revenue Disaggregated by Service Type and Contract Type Southwest Gas’ revenues overall, reflected on the Condensed Consolidated Statements of Income of both the Company and Southwest Gas, include revenue from contracts with customers, which is shown below disaggregated by customer type, in addition to other categories of revenue:
Three Months Ended
June 30,		Six Months Ended
June 30,
(Thousands of dollars)2026202520262025
Residential$189,417 $238,844 $587,721 $800,483 
Small commercial55,319 72,024 144,026 202,389 
Large commercial13,247 17,921 28,399 39,636 
Industrial/other7,337 10,669 17,647 24,141 
Transportation25,532 29,403 56,097 58,969 
Revenues from contracts with customers290,852 368,861 833,890 1,125,618 
Alternative revenue program revenues
65,285 24,870 105,430 12,504 
Other revenues (1)
2,017 2,587 3,953 4,612 
Total Regulated operations revenues (2)
$358,154 $396,318 $943,273 $1,142,734 
(1) Amounts include late fees and other miscellaneous revenues, and may also include the impact of certain regulatory mechanisms.
(2) The amounts for the six months ended June 30, 2025 differ from Southwest Gas due to the revision discussed in Note 6 - Previously Issued Condensed Consolidated Financial Statement.