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COMMITMENTS AND CONTINGENCIES - CONTRACTUAL COMMITMENTS (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Storage and transportation      
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]      
2025 $ 229    
2026 225    
2027 203    
2028 155    
2029 140    
Thereafter 1,283    
Total minimum payments 2,235    
Natural Gas      
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]      
2025 65    
2026 175    
2027 271    
2028 242    
2029 152    
Thereafter 212    
Total minimum payments 1,117    
Natural Gas | SoCalGas      
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]      
2025 61    
2026 108    
2027 124    
2028 83    
2029 0    
Thereafter 0    
Total minimum payments 376    
Natural Gas Contracts      
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]      
2025 294    
2026 400    
2027 474    
2028 397    
2029 292    
Thereafter 1,495    
Total minimum payments 3,352    
Payments 1,185 $ 4,030 $ 2,536
Natural Gas Contracts | SoCalGas      
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]      
2025 191    
2026 233    
2027 228    
2028 154    
2029 59    
Thereafter 118    
Total minimum payments 983    
Payments 1,088 3,857 2,492
Transportation | SoCalGas      
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]      
2025 130    
2026 125    
2027 104    
2028 71    
2029 59    
Thereafter 118    
Total minimum payments 607    
Liquefied Natural Gas Contracts | Sempra Infrastructure      
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]      
2025 355    
2026 640    
2027 657    
2028 646    
2029 402    
Total minimum payments 2,700    
Payments 23 30 108
Purchased-Power Agreements      
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]      
Payments 326 325 297
Purchased-Power Agreements | SDG&E      
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]      
2025 97    
2026 116    
2027 114    
2028 114    
2029 114    
Thereafter 746    
Total minimum payments 1,301    
2025 79    
2026 79    
2027 80    
2028 80    
2029 80    
Thereafter 440    
Payments 326 $ 325 $ 297
Infrastructure Construction And Improvements | SDG&E      
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]      
2025 115    
2026 1    
2027 1    
2028 1    
2029 2    
Thereafter 13    
Construction projects, payable 133    
Infrastructure Improvements For Natural Gas And Electric Transmission And Distribution | SDG&E      
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]      
Construction projects, payable 14    
Nuclear Plant Maintenance | SDG&E      
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]      
Construction projects, payable 19    
Construction Supply Agreements | SDG&E      
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]      
Construction projects, payable $ 100