GENERAL INFORMATION AND OTHER FINANCIAL DATA - CAPITALIZED FINANCING COSTS (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Capitalized Financing Costs Disclosure [Line Items] | ||||
| Capitalized interest | $ 212 | $ 148 | $ 591 | $ 401 |
| AFUDC debt | 15 | 14 | 42 | 43 |
| AFUDC equity | 37 | 43 | 117 | 130 |
| San Diego Gas and Electric Company | ||||
| Capitalized Financing Costs Disclosure [Line Items] | ||||
| AFUDC debt | 7 | 6 | 20 | 21 |
| AFUDC equity | 17 | 19 | 50 | 61 |
| Southern California Gas Company | ||||
| Capitalized Financing Costs Disclosure [Line Items] | ||||
| AFUDC debt | 8 | 8 | 22 | 22 |
| AFUDC equity | $ 20 | $ 17 | $ 50 | $ 53 |