DERIVATIVE FINANCIAL INSTRUMENTS - COMMODITY VOLUMES (Details)	12 Months Ended
	Dec. 31, 2022 MMBTU MWh	Dec. 31, 2021 MWh MMBTU
Natural gas
Derivatives, Fair Value [Line Items]
Notional amount, energy measure | MMBTU	254	184
Electricity
Derivatives, Fair Value [Line Items]
Notional amount, energy measure	1	1
Congestion revenue rights
Derivatives, Fair Value [Line Items]
Notional amount, energy measure	42	45
SDG&E | Natural gas
Derivatives, Fair Value [Line Items]
Notional amount, energy measure | MMBTU	15	7
SDG&E | Electricity
Derivatives, Fair Value [Line Items]
Notional amount, energy measure	0	1
SDG&E | Congestion revenue rights
Derivatives, Fair Value [Line Items]
Notional amount, energy measure	42	45
SoCalGas | Natural gas
Derivatives, Fair Value [Line Items]
Notional amount, energy measure | MMBTU	224	201