v3.25.2
SEGMENT INFORMATION - Revenue By Services (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Revenues from External Customers and Long-Lived Assets [Line Items]        
Energy-related businesses $ 499 $ 373 $ 880 $ 848
Revenues from contracts with customers 2,700 2,484 6,381 6,181
Revenues 3,000 3,011 6,802 6,651
Operating Segments After Reconciling Items And Eliminations        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues from contracts with customers 2,700 2,483 6,381 6,181
Total other revenues 300 527 421 470
Operating Segments After Reconciling Items And Eliminations | Sempra California        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Operating revenues 2,442 2,251 5,899 5,725
Energy-related businesses 0 0 0 0
Revenues from contracts with customers 2,442 2,251 5,899 5,725
Utilities 41 369 (21) 31
Energy-related businesses 0 0 0 0
Total other revenues 41 369 (21) 31
Operating Segments After Reconciling Items And Eliminations | Sempra Infrastructure        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Operating revenues 18 18 44 48
Energy-related businesses 240 214 438 408
Revenues from contracts with customers 258 232 482 456
Utilities 0 0 0 0
Energy-related businesses 259 158 442 439
Total other revenues 259 158 442 439
Operating Segments        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues 3,020 3,034 6,847 6,694
Operating Segments | Sempra California        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues from contracts with customers 2,449 2,256 5,912 5,735
Revenues 2,490 2,625 5,891 5,766
Operating Segments | Sempra Infrastructure        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues from contracts with customers 275 252 519 494
Revenues 530 409 956 928
Adjustments        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues 0 1    
Intersegment revenues and eliminations        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues (20) (24) (45) (43)
Intersegment revenues and eliminations | Sempra California        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Operating revenues (7) (5) (13) (10)
Energy-related businesses 0 0 0 0
Revenues (7) (5) (13) (10)
Intersegment revenues and eliminations | Sempra Infrastructure        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Operating revenues 0 0 0 0
Energy-related businesses (13) (19) (32) (33)
Revenues $ (13) $ (19) $ (32) $ (33)