v3.25.2
FAIR VALUE MEASUREMENTS - FINANCIAL INSTRUMENTS (Details) - USD ($)
$ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2025
Dec. 31, 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Notes receivable, allowance for credit losses $ 4 $ 5
Unamortized transaction costs 3 3
Unamortized discount and debt issuance costs 413 382
Finance lease obligations 1,312 1,315
Carrying amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term note receivable 359 351
Long-term amounts due to unconsolidated affiliates 359 352
Total long-term debt 35,409 32,899
Fair value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term note receivable 347 334
Long-term amounts due to unconsolidated affiliates 341 324
Total long-term debt 32,665 30,193
Fair value | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term note receivable 0 0
Long-term amounts due to unconsolidated affiliates 0 0
Total long-term debt 0 0
Fair value | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term note receivable 0 0
Long-term amounts due to unconsolidated affiliates 341 324
Total long-term debt 32,665 30,193
Fair value | Level 3    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term note receivable 347 334
Long-term amounts due to unconsolidated affiliates 0 0
Total long-term debt 0 0
SDG&E    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Unamortized discount and debt issuance costs 101 95
Finance lease obligations 1,188 1,205
SDG&E | Carrying amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total long-term debt 9,800 8,950
SDG&E | Fair value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total long-term debt 8,652 7,760
SDG&E | Fair value | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total long-term debt 0 0
SDG&E | Fair value | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total long-term debt 8,652 7,760
SDG&E | Fair value | Level 3    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total long-term debt 0 0
SoCalGas    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Unamortized discount and debt issuance costs 82 65
Finance lease obligations 124 110
SoCalGas | Carrying amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total long-term debt 8,109 7,359
SoCalGas | Fair value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total long-term debt 7,691 6,880
SoCalGas | Fair value | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total long-term debt 0 0
SoCalGas | Fair value | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total long-term debt 7,691 6,880
SoCalGas | Fair value | Level 3    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total long-term debt $ 0 $ 0