DERIVATIVE FINANCIAL INSTRUMENTS - DERIVATIVE COMMODITY VOLUMES (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2022 MWh MMBTU	Dec. 31, 2021 MWh MMBTU
Natural gas | Long
Derivative [Line Items]
Derivative, nonmonetary notional amount | MMBTU	222	184
Electricity
Derivative [Line Items]
Derivative, nonmonetary notional amount	0	1
Congestion revenue rights
Derivative [Line Items]
Derivative, nonmonetary notional amount	47	45
SDG&E | Natural gas
Derivative [Line Items]
Derivative, nonmonetary notional amount | MMBTU	13	7
SDG&E | Electricity
Derivative [Line Items]
Derivative, nonmonetary notional amount	0	1
SDG&E | Congestion revenue rights
Derivative [Line Items]
Derivative, nonmonetary notional amount	47	45
SoCalGas | Natural gas
Derivative [Line Items]
Derivative, nonmonetary notional amount | MMBTU	196	201