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GENERAL INFORMATION AND OTHER FINANCIAL DATA - OTHER INCOME (EXPENSE), NET (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Other Income [Line Items] |  |  |  |
Allowance for equity funds used during construction | $ 39 | $ 35 | $ 114 | $ 105
Investment gains (losses), net | 29 | (19) | 48 | (2)
Gains on interest rate and foreign exchange instruments, net | 1 | 1 | 2 | 5
Foreign currency transaction (losses) gains, net | (5) | (3) | (6) | 1
Non-service components of net periodic benefit cost | (21) | (28) | (25) | (79)
Interest on regulatory balancing accounts, net | 26 | 19 | 68 | 56
Sundry, net | (4) | (2) | (7) | (11)
Total | 65 | 3 | 194 | 75
SDG&E |  |  |  |
Other Income [Line Items] |  |  |  |
Allowance for equity funds used during construction | 21 | 21 | 60 | 67
Non-service components of net periodic benefit cost | (3) | (5) | 4 | (14)
Interest on regulatory balancing accounts, net | 12 | 10 | 30 | 31
Sundry, net | 0 | (1) | (8) | (9)
Total | 30 | 25 | 86 | 75
SoCalGas |  |  |  |
Other Income [Line Items] |  |  |  |
Allowance for equity funds used during construction | 18 | 14 | 54 | 38
Non-service components of net periodic benefit cost | (16) | (22) | (12) | (60)
Interest on regulatory balancing accounts, net | 14 | 9 | 38 | 25
Sundry, net | (3) | (3) | (7) | (12)
Total | $ 13 | $ (2) | $ 73 | $ (9)

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