GENERAL INFORMATION AND OTHER FINANCIAL DATA - OTHER INCOME (EXPENSE), NET (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Other Income [Line Items] | ||
| Allowance for equity funds used during construction | $ 42 | $ 41 |
| Investment gains, net | 1 | 2 |
| Gains on foreign exchange instruments, net | 9 | 0 |
| Foreign currency transaction (losses) gains, net | (1) | 4 |
| Non-service components of net periodic benefit cost | 29 | 23 |
| Interest on regulatory balancing accounts, net | 19 | 21 |
| Sundry, net | 1 | 0 |
| Total | 100 | 91 |
| SDG&E | ||
| Other Income [Line Items] | ||
| Allowance for equity funds used during construction | 17 | 19 |
| Non-service components of net periodic benefit cost | 11 | 9 |
| Interest on regulatory balancing accounts, net | 12 | 11 |
| Sundry, net | (2) | 1 |
| Total | 38 | 40 |
| SoCalGas | ||
| Other Income [Line Items] | ||
| Allowance for equity funds used during construction | 15 | 18 |
| Non-service components of net periodic benefit cost | 21 | 17 |
| Interest on regulatory balancing accounts, net | 7 | 10 |
| Sundry, net | 0 | (3) |
| Total | $ 43 | $ 42 |