WILDFIRE-RELATED CONTINGENCIES (Loss Recoveries) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($)
2022 Mosquito fire
Loss Contingencies [Line Items]
Probable of recovery	$ 118
2021 Dixie fire
Loss Contingencies [Line Items]
Probable of recovery	1,669
Insurance | 2022 Mosquito fire
Loss Contingencies [Line Items]
Probable of recovery	58
Insurance | 2021 Dixie fire
Loss Contingencies [Line Items]
Probable of recovery	527
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	88
WEMA | 2022 Mosquito fire
Loss Contingencies [Line Items]
Probable of recovery	51
WEMA | 2021 Dixie fire
Loss Contingencies [Line Items]
Probable of recovery	454
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	$ 600