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SEMPRA - INVESTMENTS IN UNCONSOLIDATED ENTITIES - NARRATIVE (Details) - USD ($)
$ in Millions
3 Months Ended
Apr. 29, 2026
Apr. 28, 2026
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Schedule of Equity Method Investments [Line Items]          
Proceeds from distributions received     $ 389 $ 291  
SI Partners | Disposal Group Held-for-sale          
Schedule of Equity Method Investments [Line Items]          
Equity method investment, held for sale     $ 2,546   $ 2,566
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     $ 876 486  
Proceeds from distributions received     229 142  
Sempra Texas Utilities | Oncor Holdings | Subsequent Event          
Schedule of Equity Method Investments [Line Items]          
Investments made during period $ 610        
Proceeds from distributions received   $ 229      
Sempra Infrastructure | Cameron LNG JV          
Schedule of Equity Method Investments [Line Items]          
Proceeds from distributions received     160 149  
Sempra Infrastructure | TAG          
Schedule of Equity Method Investments [Line Items]          
Proceeds from distributions received     $ 60 $ 45