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SEMPRA - EQUITY AND EARNINGS PER COMMON SHARE - NCI NARRATIVE (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 6 Months Ended
Mar. 31, 2023
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Noncontrolling Interest [Line Items]          
Contributions   $ 312 $ 498 $ 786 $ 595
Sale         $ 255
Port Arthur LNG          
Noncontrolling Interest [Line Items]          
Contributions $ 237        
Indirect Subsidiary Of SI Partners | Port Arthur LNG          
Noncontrolling Interest [Line Items]          
Cash consideration 265        
Sale 18        
Sale of noncontrolling interest, transaction costs 3        
Sale of noncontrolling interest, tax impacts 7        
Funding commitment, aggregate amount $ 9,000        
Funding commitment paid   $ 2,400   $ 2,400  
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%