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FAIR VALUE MEASUREMENTS - FINANCIAL INSTRUMENTS (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 | Dec. 31, 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Notes receivable, allowance for credit losses | $ 5 | $ 5
Unamortized transaction costs | 3 | 3
Unamortized discount and debt issuance costs | 395 | 382
Finance lease obligations | 1,315 | 1,315
Carrying amount |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Long-term note receivable | 356 | 351
Long-term amounts due to unconsolidated affiliates | 355 | 352
Total long-term debt | 34,697 | 32,899
Fair value |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Long-term note receivable | 344 | 334
Long-term amounts due to unconsolidated affiliates | 329 | 324
Total long-term debt | 31,804 | 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 | 0 | 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 | 329 | 324
Total long-term debt | 31,804 | 30,193
Fair value | Level 3 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Long-term note receivable | 344 | 334
Long-term amounts due to unconsolidated affiliates | 0 | 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 | 103 | 95
Finance lease obligations | 1,197 | 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 | 8,621 | 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 | 8,621 | 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 | 64 | 65
Finance lease obligations | 118 | 110
SoCalGas | Carrying amount |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total long-term debt | 7,359 | 7,359
SoCalGas | Fair value |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total long-term debt | 6,878 | 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 | 6,878 | 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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