WILDFIRE-RELATED CONTINGENCIES (Loss Recoveries) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($)
2022 Mosquito fire
Loss Contingencies [Line Items]
Probable of recovery	$ 109
2021 Dixie fire
Loss Contingencies [Line Items]
Probable of recovery	1,218
Insurance | 2022 Mosquito fire
Loss Contingencies [Line Items]
Probable of recovery	49
Insurance | 2021 Dixie fire
Loss Contingencies [Line Items]
Probable of recovery	529
FERC TO rates | 2022 Mosquito fire
Loss Contingencies [Line Items]
Probable of recovery	9
FERC TO rates | 2021 Dixie fire
Loss Contingencies [Line Items]
Probable of recovery	116
WEMA | 2022 Mosquito fire
Loss Contingencies [Line Items]
Probable of recovery	51
WEMA | 2021 Dixie fire
Loss Contingencies [Line Items]
Probable of recovery	398
Wildfire Fund | 2022 Mosquito fire
Loss Contingencies [Line Items]
Probable of recovery	0
Wildfire Fund | 2021 Dixie fire
Loss Contingencies [Line Items]
Probable of recovery	$ 175