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EMPLOYEE BENEFIT PLANS - AMOUNTS IN ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Pension Plan |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Net actuarial (loss) gain | $ (120) | $ (124)
Prior service cost | (9) | (6)
Total | (129) | (130)
Pension Plan | SDG&E |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Net actuarial (loss) gain | (12) | (8)
Total | (12) | (8)
Pension Plan | SoCalGas |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Net actuarial (loss) gain | (14) | (10)
Prior service cost | (3) | (2)
Total | (17) | (12)
Other Postretirement Benefits Plan |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Net actuarial (loss) gain | 14 | 13
Prior service cost | 0 | 0
Total | $ 14 | $ 13

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