WILDFIRE-RELATED CONTINGENCIES (Insurance Receivable) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($)
Insurance Receivable [Roll Forward]
Insurance Receivable, Beginning Balance	$ 794
Accrued insurance recoveries	4
Reimbursements	(55)
Insurance Receivable, Ending Balance	743
Resolved claims	418
Other Receivables
Insurance Receivable [Roll Forward]
Resolved claims	13
2022 Mosquito fire
Insurance Receivable [Roll Forward]
Insurance Receivable, Beginning Balance	45
Accrued insurance recoveries	4
Reimbursements	0
Insurance Receivable, Ending Balance	49
Insurance receivable	49
2021 Dixie fire
Insurance Receivable [Roll Forward]
Insurance Receivable, Beginning Balance	530
Accrued insurance recoveries	(1)
Reimbursements	0
Insurance Receivable, Ending Balance	529
Insurance receivable	529
2020 Zogg fire
Insurance Receivable [Roll Forward]
Insurance Receivable, Beginning Balance	118
Accrued insurance recoveries	1
Reimbursements	(55)
Insurance Receivable, Ending Balance	64
Insurance receivable	371
2019 Kincade fire
Insurance Receivable [Roll Forward]
Insurance Receivable, Beginning Balance	101
Accrued insurance recoveries	0
Reimbursements	0
Insurance Receivable, Ending Balance	101
Insurance receivable	$ 430