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FAIR VALUE MEASUREMENTS - FINANCIAL INSTRUMENTS (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Notes receivable, allowance for credit losses | $ 4 | $ 5
Notes receivable, unamortized transaction costs | 3 | 3
Long-term debt held for sale, unamortized discount and debt issuance costs | 121 |
Unamortized discount and debt issuance costs | 311 | 382
Finance lease obligations | 1,305 | 1,315
Carrying amount |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Long-term note receivable | 364 | 351
Long-term amounts due to unconsolidated affiliates held for sale | 417 |
Long-term amounts due to unconsolidated affiliates |  | 352
Long-term debt held for sale | 6,961 |
Total long-term debt | 29,866 | 32,899
Fair value |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Long-term note receivable | 359 | 334
Long-term amounts due to unconsolidated affiliates held for sale | 400 |
Long-term amounts due to unconsolidated affiliates |  | 324
Long-term debt held for sale | 6,661 |
Total long-term debt | 28,376 | 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 held for sale | 0 |
Long-term amounts due to unconsolidated affiliates |  | 0
Long-term debt held for sale | 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 held for sale | 400 |
Long-term amounts due to unconsolidated affiliates |  | 324
Long-term debt held for sale | 6,661 |
Total long-term debt | 28,376 | 30,193
Fair value | Level 3 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Long-term note receivable | 359 | 334
Long-term amounts due to unconsolidated affiliates held for sale | 0 |
Long-term amounts due to unconsolidated affiliates |  | 0
Long-term debt held for sale | 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 | 99 | 95
Finance lease obligations | 1,181 | 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 | 8,849 | 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 | 8,849 | 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 | 81 | 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 | 7,847 | 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 | 7,847 | 6,880
SoCalGas | Fair value | Level 3 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total long-term debt | $ 0 | $ 0

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