v3.26.1
SEGMENT INFORMATION - Revenue By Services (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Revenues from External Customers and Long-Lived Assets [Line Items]    
Energy-related businesses $ 406 $ 381
Revenues from contracts with customers 3,428 3,681
Revenues 3,655 3,802
Operating Segments After Reconciling Items And Eliminations    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenues from contracts with customers 3,428 3,681
Total other revenues 227 121
Operating Segments After Reconciling Items And Eliminations | Sempra California    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Operating revenues 3,211 3,457
Energy-related businesses 0 0
Revenues from contracts with customers 3,211 3,457
Utilities 11 (62)
Energy-related businesses 0 0
Total other revenues 11 (62)
Operating Segments After Reconciling Items And Eliminations | Sempra Infrastructure    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Operating revenues 27 26
Energy-related businesses 190 198
Revenues from contracts with customers 217 224
Utilities 0 0
Energy-related businesses 216 183
Total other revenues 216 183
Segment revenues    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenues 3,674 3,827
Segment revenues | Sempra California    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenues from contracts with customers 3,220 3,463
Revenues 3,231 3,401
Segment revenues | Sempra Infrastructure    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenues from contracts with customers 230 244
Revenues 443 426
Intersegment revenues and eliminations    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenues (19) (25)
Intersegment revenues and eliminations | Sempra California    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Operating revenues (9) (6)
Energy-related businesses 0 0
Revenues (9) (6)
Intersegment revenues and eliminations | Sempra Infrastructure    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Operating revenues 0 0
Energy-related businesses (10) (19)
Revenues $ (10) $ (19)