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GENERAL INFORMATION AND OTHER FINANCIAL DATA - AFFILIATES REVENUE AND COST OF SALES (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Related Party Transaction [Line Items] |  |  |  |
Revenues | $ 3,011 | $ 3,335 | $ 6,651 | $ 9,895
Interest expense | 311 | 317 | 616 | 683
Related Party |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Revenues | 10 | 11 | 20 | 24
Interest expense | 3 | 4 | 7 | 8
SDG&E |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Revenues | 1,355 | 1,262 | 2,734 | 2,915
Interest expense | 131 | 123 | 259 | 241
Operating revenues | 1,355 | 1,262 | 2,734 | 2,915
SDG&E | Related Party |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Operating revenues | 5 | 6 | 11 | 10
Cost of sales | 35 | 27 | 75 | 57
SoCalGas |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Revenues | 1,309 | 1,467 | 3,114 | 5,261
Interest expense | 78 | 71 | 155 | 140
Operating revenues | 1,309 | 1,467 | 3,114 | 5,261
SoCalGas | Related Party |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Operating revenues | 37 | 28 | 81 | 62
Cost of sales | $ 0 | $ 4 | $ (3) | $ 35

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