DERIVATIVE FINANCIAL INSTRUMENTS - DERIVATIVE COMMODITY VOLUMES (Details)	6 Months Ended	12 Months Ended
	Jun. 30, 2022 MWh MMBTU	Dec. 31, 2021 MWh MMBTU
Natural gas | Long
Derivative [Line Items]
Derivative, nonmonetary notional amount | MMBTU		184
Natural gas | Short
Derivative [Line Items]
Derivative, nonmonetary notional amount | MMBTU	193
Electricity
Derivative [Line Items]
Derivative, nonmonetary notional amount | MWh	0	1
Congestion revenue rights
Derivative [Line Items]
Derivative, nonmonetary notional amount | MWh	49	45
SDG&E | Natural gas
Derivative [Line Items]
Derivative, nonmonetary notional amount | MMBTU	10	7
SDG&E | Electricity
Derivative [Line Items]
Derivative, nonmonetary notional amount | MWh	0	1
SDG&E | Congestion revenue rights
Derivative [Line Items]
Derivative, nonmonetary notional amount | MWh	49	45
SoCalGas | Natural gas
Derivative [Line Items]
Derivative, nonmonetary notional amount | MMBTU	141	201