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DERIVATIVE FINANCIAL INSTRUMENTS - DERIVATIVE INSTRUMENTS WITH CONTINGENT FEATURES NARRATIVE (Details) - USD ($)
$ in Millions
Mar. 31, 2025
Dec. 31, 2024
Derivative [Line Items]    
Derivative fair value $ 105 $ 122
Collateral 105  
SoCalGas    
Derivative [Line Items]    
Derivative fair value 34 $ 42
Collateral 34  
SDG&E    
Derivative [Line Items]    
Derivative fair value 1  
Collateral $ 1