EMPLOYEE BENEFIT PLANS - AMOUNTS IN ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Net actuarial (loss) gain	$ (95)	$ (86)
Prior service cost	(5)	(8)
Total	(100)	(94)
Pension Plan | San Diego Gas and Electric Company
Defined Benefit Plan Disclosure [Line Items]
Net actuarial (loss) gain	(6)	(9)
Prior service cost	(1)	(1)
Total	(7)	(10)
Pension Plan | SoCalGas
Defined Benefit Plan Disclosure [Line Items]
Net actuarial (loss) gain	(9)	(15)
Prior service cost	(3)	(3)
Total	(12)	(18)
Other Postretirement Benefits Plan
Defined Benefit Plan Disclosure [Line Items]
Net actuarial (loss) gain	14	11
Prior service cost	0	0
Total	$ 14	$ 11