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SEMPRA - INVESTMENTS IN UNCONSOLIDATED ENTITIES - NARRATIVE (Details) - USD ($)
$ in Millions
9 Months Ended
Oct. 29, 2025
Oct. 28, 2025
Sep. 30, 2025
Sep. 30, 2024
Schedule of Equity Method Investments [Line Items]        
Proceeds from distributions received     $ 828 $ 654
SI Partners | Disposal Group Held-for-sale        
Schedule of Equity Method Investments [Line Items]        
Equity method investment, held for sale     $ 2,471  
Sempra Texas Intermediate Holding Company LLC | Oncor Holdings        
Schedule of Equity Method Investments [Line Items]        
Equity ownership interest (as a percent)     100.00%  
Oncor Holdings | Oncor Electric Delivery Company LLC.        
Schedule of Equity Method Investments [Line Items]        
Ownership interest (as a percent)     80.25%  
Sempra Texas Utilities | Oncor Holdings        
Schedule of Equity Method Investments [Line Items]        
Investments made during period     $ 1,500 578
Proceeds from distributions received     459 314
Sempra Texas Utilities | Oncor Holdings | Subsequent Event        
Schedule of Equity Method Investments [Line Items]        
Investments made during period $ 519      
Proceeds from distributions received   $ 175    
Sempra Infrastructure | Cameron LNG JV        
Schedule of Equity Method Investments [Line Items]        
Investments made during period     2 10
Proceeds from distributions received     369 353
Sempra Infrastructure | TAG        
Schedule of Equity Method Investments [Line Items]        
Proceeds from distributions received     $ 45 $ 62