WILDFIRE-RELATED CONTINGENCIES (Insurance Receivable) (Details) $ in Millions	6 Months Ended
	Jun. 30, 2023 USD ($)
Insurance Receivable [Roll Forward]
Insurance Receivable, Beginning Balance	$ 794
Accrued insurance recoveries	8
Reimbursements	(355)
Insurance Receivable, Ending Balance	447
Resolved claims	418
Other Receivables
Insurance Receivable [Roll Forward]
Resolved claims	9
2022 Mosquito fire
Insurance Receivable [Roll Forward]
Insurance Receivable, Beginning Balance	45
Accrued insurance recoveries	8
Reimbursements	0
Insurance Receivable, Ending Balance	53
Insurance receivable	54
2021 Dixie fire
Insurance Receivable [Roll Forward]
Insurance Receivable, Beginning Balance	530
Accrued insurance recoveries	(1)
Reimbursements	(200)
Insurance Receivable, Ending Balance	329
Insurance receivable	528
2020 Zogg fire
Insurance Receivable [Roll Forward]
Insurance Receivable, Beginning Balance	118
Accrued insurance recoveries	1
Reimbursements	(54)
Insurance Receivable, Ending Balance	65
Insurance receivable	372
2019 Kincade fire
Insurance Receivable [Roll Forward]
Insurance Receivable, Beginning Balance	101
Accrued insurance recoveries	0
Reimbursements	(101)
Insurance Receivable, Ending Balance	0
Insurance receivable	$ 430