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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, 2026 | Jun. 30, 2025 | Jun. 30, 2026 | Jun. 30, 2025
Related Party Transaction [Line Items] |  |  |  |
Revenues | $ 2,997 | $ 3,000 | $ 6,652 | $ 6,802
Interest expense | 430 | 359 | 812 | 792
Related Party |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Revenues | 8 | 8 | 16 | 17
Interest expense | 6 | 5 | 12 | 9
SDG&E |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Revenues | 1,368 | 1,262 | 2,915 | 2,682
Interest expense | 152 | 139 | 299 | 274
Operating revenues | 1,368 | 1,262 | 2,915 | 2,682
SDG&E | Related Party |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Operating revenues | 6 | 5 | 12 | 11
Cost of sales | 35 | 30 | 63 | 68
SoCalGas |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Revenues | 1,187 | 1,268 | 2,915 | 3,288
Interest expense | 104 | 89 | 201 | 179
Operating revenues | 1,187 | 1,268 | 2,915 | 3,288
SoCalGas | Related Party |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Operating revenues | 46 | 40 | 92 | 81
Cost of sales | $ (2) | $ 0 | $ (2) | $ (1)

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