v3.26.3
SEGMENT INFORMATION - Revenue By Services (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]        
Energy-related businesses $ 453 $ 528 $ 1,334 $ 1,408
Revenues from contracts with customers 3,030 2,756 9,257 9,137
Revenues 3,191 3,151 9,843 9,953
Operating Segments After Reconciling Items And Eliminations        
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]        
Revenues from contracts with customers 3,030 2,756 9,257 9,137
Total other revenues 161 395 586 816
Operating Segments After Reconciling Items And Eliminations | Sempra California        
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]        
Operating revenues 2,732 2,513 8,512 8,412
Energy-related businesses 0 0 0 0
Revenues from contracts with customers 2,732 2,513 8,512 8,412
Utilities (3) 95 (57) 74
Energy-related businesses 0 0 0 0
Total other revenues (3) 95 (57) 74
Operating Segments After Reconciling Items And Eliminations | Sempra Infrastructure        
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]        
Operating revenues 9 15 54 59
Energy-related businesses 289 228 691 666
Revenues from contracts with customers 298 243 745 725
Utilities 0 0 0 0
Energy-related businesses 164 300 643 742
Total other revenues 164 300 643 742
Segment revenues        
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]        
Revenues 3,207 3,168 9,904 10,015
Segment revenues | Sempra California        
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]        
Revenues from contracts with customers 2,736 2,518 8,532 8,430
Revenues 2,733 2,613 8,475 8,504
Segment revenues | Sempra Infrastructure        
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]        
Revenues from contracts with customers 312 256 793 775
Revenues 474 555 1,429 1,511
Intersegment revenues and eliminations        
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]        
Revenues (16) (17) (61) (62)
Intersegment revenues and eliminations | Sempra California        
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]        
Operating revenues (4) (5) (20) (18)
Energy-related businesses 0 0 0 0
Revenues (4) (5) (20) (18)
Intersegment revenues and eliminations | Sempra Infrastructure        
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]        
Operating revenues 0 0 0 0
Energy-related businesses (12) (12) (41) (44)
Revenues $ (12) $ (12) $ (41) $ (44)