v3.26.3
SEMPRA - EQUITY AND EARNINGS PER COMMON SHARE - PREFERRED STOCK NARRATIVE (Details) - USD ($)
$ / shares in Units, $ in Millions
 1 Months Ended 3 Months Ended 9 Months Ended
Aug. 31, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Feb. 28, 2026
Dec. 31, 2025
Preferred Stock [Line Items]                
Redemption of preferred stock       $ 900   $ 900    
Preferred deemed dividends     $ 0 $ 11 $ 0 $ 11    
Preferred stock, shares authorized (in shares)     50,000,000   50,000,000     50,000,000
Purchase of NCI     $ 20   $ 20      
Premium paid to subsidiary preferred shareholders     5   5      
Preferred stock, retirement costs of subsidiary     1   1      
Series C Preferred Stock                
Preferred Stock [Line Items]                
Shares redeemed during period (in shares)   900,000            
Preferred stock redemption price (in dollars per share)   $ 1,000   $ 1,000   $ 1,000    
Redemption of preferred stock   $ 900            
Preferred deemed dividends       $ 11   $ 11    
Interest expense, accrued but undeclared dividends   $ 4            
Preferred stock, shares authorized (in shares)             0  
Southern California Gas Company                
Preferred Stock [Line Items]                
Preferred deemed dividends     $ 6 $ 0 $ 6 $ 0    
Preferred stock, shares authorized (in shares)     5,000,000   5,000,000     11,000,000
Preferred stock dividends paid (in dollars per share) $ 31.00              
Preferred stock, par value (in dollars per share) 25.00              
Preferred stock dividends, premium paid (in dollars per share) $ 6.00              
Payments for redemption of preferred stock and deemed dividends $ 27              
Premium paid to preferred shareholders     $ 5   $ 5      
Preferred stock, retirement costs     $ 1   $ 1      
Preferred stock, shares eliminated (in shares) 1,000,000              
Preference stock, shares eliminated (in shares) 5,000,000