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SEMPRA - EQUITY AND EARNINGS PER COMMON SHARE - NCI NARRATIVE (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2023
Mar. 31, 2023
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Noncontrolling Interest [Line Items]            
Noncontrolling interest, increase from sale of parent equity interest       $ 986   $ 1,241
Contributions     $ 335 496 $ 1,121 1,091
Port Arthur LNG            
Noncontrolling Interest [Line Items]            
Contributions $ 1,100 $ 234        
SI Partners            
Noncontrolling Interest [Line Items]            
Noncontrolling interest, increase from sale of parent equity interest           200
Sale of noncontrolling interest, change in equity           145
Indirect Subsidiary Of SI Partners | Port Arthur LNG            
Noncontrolling Interest [Line Items]            
Noncontrolling interest, increase from sale of parent equity interest   12        
Cash consideration 984 254        
Noncontrolling interest, decrease from sale of parent equity interest 56          
Noncontrolling interest, decrease from sale of parent equity interest, net of transaction costs 11          
Noncontrolling interest, decrease from sale of parent equity interest, tax expense (benefit) $ 22          
Noncontrolling interest, increase from sale of parent equity interest, net of transaction costs   3        
Noncontrolling interest, increase from sale of parent equity interest, tax expense (benefit)   5        
Funding commitment, aggregate amount   $ 9,000        
Funding commitment paid     $ 2,700   $ 2,700  
KKR Pinnacle | SI Partners            
Noncontrolling Interest [Line Items]            
Funding used       $ 14   $ 200
Port Arthur LNG | Indirect Subsidiary Of SI Partners            
Noncontrolling Interest [Line Items]            
Ownership interest (as a percent)   30.00%        
Funding commitment (in percent)   110.00%        
Guaranteed funding amount (in percent)   70.00%        
Port Arthur LNG | SI Partners | KKR Denali            
Noncontrolling Interest [Line Items]            
Ownership interest (as a percent) 42.00%     42.00%   42.00%
S I Partners Subsidiary | Indirect Subsidiary Of SI Partners | KKR Denali            
Noncontrolling Interest [Line Items]            
Ownership interest (as a percent) 60.00%     60.00%   60.00%