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