v3.26.1
CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - Southwest - USD ($)
$ in Thousands
Total
Southwest Gas Corporation
Common stock shares
Common stock shares
Southwest Gas Corporation
Additional Paid-in Capital
Additional Paid-in Capital
Southwest Gas Corporation
AOCI
AOCI
Southwest Gas Corporation
Retained Earnings
Retained Earnings
Southwest Gas Corporation
Beginning balance (in shares) at Dec. 31, 2024     71,783,000 47,482,000            
Beginning balance at Dec. 31, 2024 $ 3,681,422 $ 3,235,486 $ 73,413 $ 49,112 $ 2,721,343 $ 2,165,002 $ (49,218) $ (38,401) $ 758,649 $ 1,059,773
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net income 113,870 142,595             113,870 142,595
Dividends declared to Southwest Gas Holdings, Inc. (45,066)               (45,066)  
Share-based compensation [1]   1,800       2,116       (316)
Net actuarial gain arising during period, less amortization of unamortized benefit plan cost, net of tax and regulatory adjustment 268 268         268 268    
Ending balance (in shares) at Mar. 31, 2025     71,911,000 47,482,000            
Ending balance at Mar. 31, 2025 3,751,445 3,380,149 $ 73,541 $ 49,112 2,726,758 2,167,118 (48,866) (38,133) 827,453 1,202,052
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net income (40,154) 45,646             (40,154) 45,646
Dividends declared to Southwest Gas Holdings, Inc. (44,847) (44,609)             (44,847) (44,609)
Share-based compensation [1]   2,166       2,249       (83)
Net actuarial gain arising during period, less amortization of unamortized benefit plan cost, net of tax and regulatory adjustment 267 267         267 267    
Ending balance (in shares) at Jun. 30, 2025     71,978,000 47,482,000            
Ending balance at Jun. 30, 2025 $ 4,088,534 3,383,619 $ 73,608 $ 49,112 2,872,681 2,169,367 (41,355) (37,866) 742,452 1,203,006
Beginning balance (in shares) at Dec. 31, 2025 72,224,593   72,224,000 47,482,000            
Beginning balance at Dec. 31, 2025 $ 3,961,119 3,524,966 $ 73,854 $ 49,112 2,898,965 2,195,489 (34,546) (34,546) 1,022,846 1,314,911
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net income 138,374 137,771             138,374 137,771
Dividends declared to Southwest Gas Holdings, Inc. (893)               (893)  
Share-based compensation [1]   (735)       67       (802)
Net actuarial gain arising during period, less amortization of unamortized benefit plan cost, net of tax and regulatory adjustment 446 446         446 446    
Ending balance (in shares) at Mar. 31, 2026     72,373,000 47,482,000            
Ending balance at Mar. 31, 2026 4,101,678 3,662,448 $ 74,003 $ 49,112 2,901,448 2,195,556 (34,100) (34,100) 1,160,327 1,451,880
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net income 42,122 40,757             42,122 40,757
Dividends declared to Southwest Gas Holdings, Inc. (46,820)               (46,820)  
Share-based compensation [1]   1,513       1,588       (75)
Contributions from Southwest Gas Holdings, Inc.   120,000       120,000        
Net actuarial gain arising during period, less amortization of unamortized benefit plan cost, net of tax and regulatory adjustment $ 24,169 24,169         24,169 24,169    
Ending balance (in shares) at Jun. 30, 2026 72,443,899   72,444,000 47,482,000            
Ending balance at Jun. 30, 2026 $ 4,125,290 $ 3,848,887 $ 74,074 $ 49,112 $ 2,905,518 $ 2,317,144 $ (9,931) $ (9,931) $ 1,155,629 $ 1,492,562
[1] Relates to capital contributions from Southwest Gas Holdings, Inc. associated with share-based compensation awards granted to Southwest Gas employees.