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SEMPRA - INVESTMENTS IN UNCONSOLIDATED ENTITIES - SUMMARIZED FINANCIAL INFORMATION (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Schedule of Equity Method Investments [Line Items]    
Interest expense $ (305) $ (366)
Income tax (expense) benefit (172) (376)
Net income 881 1,172
NCI held by Texas Transmission Investment LLC (69) (192)
Earnings attributable to common shares 801 969
Equity Method Investment, Nonconsolidated Investee or Group of Investees | Oncor Holdings    
Schedule of Equity Method Investments [Line Items]    
Operating revenues 1,458 1,292
Operating expenses (1,051) (1,024)
Income from operations 407 268
Interest expense (150) (123)
Income tax (expense) benefit (49) (24)
Net income 223 99
NCI held by Texas Transmission Investment LLC (44) (20)
Earnings attributable to common shares $ 179 $ 79