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SIGNIFICANT ACCOUNTING POLICIES AND OTHER FINANCIAL DATA - AFFILIATES REVENUE AND COST OF SALES (Details) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 31, 2022 MW | Jun. 30, 2015 MW | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Related Party Transaction [Line Items] |  |  |  |  |
Revenues |  |  | $ 16,720 | $ 14,439 | $ 12,857
Interest income |  |  | 89 | 75 | 69
Interest expense |  |  | 1,309 | 1,054 | 1,198
SDG&E |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Revenues |  |  | 5,597 | 5,838 | 5,504
Interest income |  |  | 15 | 5 | 1
Interest expense |  |  | 497 | 449 | 412
Operating revenues |  |  | 5,597 | 5,838 | 5,504
SoCalGas |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Revenues |  |  | 8,289 | 6,840 | 5,515
Interest income |  |  | 9 | 6 | 1
Interest expense |  |  | 285 | 198 | 157
Operating revenues |  |  | $ 8,289 | 6,840 | 5,515
California Utilities | Minimum | Federal Funds Rate |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Variable percentage rate |  |  | 13.00% |  |
California Utilities | Maximum | Federal Funds Rate |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Variable percentage rate |  |  | 20.00% |  |
Related Party |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Revenues |  |  | $ 44 | 41 | 31
Cost of sales |  |  | 0 | 0 | 11
Interest income |  |  | 0 | 16 | 50
Interest expense |  |  | 15 | 15 | 15
Related Party | SDG&E |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Cost of sales |  |  | 113 | 92 | 103
Operating revenues |  |  | 21 | 16 | 11
Related Party | SoCalGas |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Cost of sales |  |  | 35 | (9) | 1
Operating revenues |  |  | $ 124 | $ 100 | $ 98
ESJ JV | SDG&E |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Power purchase agreement term | 20 years | 20 years |  |  |
Generating capacity (in mw) | MW | 108 | 155 |  |  |

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