WILDFIRE-RELATED CONTINGENCIES (Insurance Receivable) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($)
Insurance Receivable [Roll Forward]
Insurance Receivable, Beginning Balance	$ 794
Accrued insurance recoveries	18
Reimbursements	(376)
Insurance Receivable, Ending Balance	436
2022 Mosquito fire
Insurance Receivable [Roll Forward]
Insurance Receivable, Beginning Balance	45
Accrued insurance recoveries	18
Reimbursements	0
Insurance Receivable, Ending Balance	63
Insurance receivable	63
2021 Dixie fire
Insurance Receivable [Roll Forward]
Insurance Receivable, Beginning Balance	530
Accrued insurance recoveries	(4)
Reimbursements	(200)
Insurance Receivable, Ending Balance	326
Insurance receivable	526
2020 Zogg fire
Insurance Receivable [Roll Forward]
Insurance Receivable, Beginning Balance	118
Accrued insurance recoveries	4
Reimbursements	(75)
Insurance Receivable, Ending Balance	47
Insurance receivable	374
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