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GENERAL INFORMATION AND OTHER FINANCIAL DATA - AFFILIATES REVENUE AND COST OF SALES (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Related Party Transaction [Line Items] |  |  |  |
Revenues | $ 2,776 | $ 3,334 | $ 9,427 | $ 13,229
Interest expense | 328 | 312 | 944 | 995
Related Party |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Revenues | 11 | 10 | 31 | 34
Interest expense | 5 | 3 | 12 | 11
SDG&E |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Revenues | 1,243 | 1,442 | 3,977 | 4,357
Interest expense | 131 | 126 | 390 | 367
Operating revenues | 1,243 | 1,442 | 3,977 | 4,357
SDG&E | Related Party |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Operating revenues | 6 | 5 | 17 | 15
Cost of sales | 36 | 25 | 111 | 82
SoCalGas |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Revenues | 1,054 | 1,313 | 4,168 | 6,574
Interest expense | 82 | 70 | 237 | 210
Operating revenues | 1,054 | 1,313 | 4,168 | 6,574
SoCalGas | Related Party |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Operating revenues | 43 | 29 | 124 | 91
Cost of sales | $ (2) | $ 2 | $ (5) | $ 37

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