EMPLOYEE BENEFIT PLANS - EXPECTED CONTRIBUTIONS (Details) $ in Millions	Dec. 31, 2025 USD ($)
Disposal Group Held-for-sale | SI Partners
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions held for sale	$ 2
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions	231
Pension Plan | SDG&E
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions	49
Pension Plan | SoCalGas
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions	151
Other Postretirement Benefits Plan
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions	9
Other Postretirement Benefits Plan | SDG&E
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions	7
Other Postretirement Benefits Plan | SoCalGas
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions	$ 1