EMPLOYEE BENEFIT PLANS - EXPECTED CONTRIBUTIONS (Details) $ in Millions	Dec. 31, 2023 USD ($)
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions	$ 260
Pension Plan | SDG&E
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions	36
Pension Plan | SoCalGas
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions	173
Other Postretirement Benefits Plan
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions	5
Other Postretirement Benefits Plan | SDG&E
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions	1
Other Postretirement Benefits Plan | SoCalGas
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions	$ 1