WILDFIRE-RELATED CONTINGENCIES (Insurance Receivable) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2022 USD ($)
Insurance Receivable [Roll Forward]
Insurance Receivable, Beginning Balance	$ 1,247
Accrued insurance recoveries	40
Reimbursements	(167)
Insurance Receivable, Ending Balance	1,120
Resolved claims	468
Other Receivables
Insurance Receivable [Roll Forward]
Resolved claims	239
2022 Mosquito fire
Insurance Receivable [Roll Forward]
Insurance Receivable, Beginning Balance	0
Accrued insurance recoveries	40
Reimbursements	0
Insurance Receivable, Ending Balance	40
2021 Dixie fire
Insurance Receivable [Roll Forward]
Insurance Receivable, Beginning Balance	563
Accrued insurance recoveries	(10)
Reimbursements	0
Insurance Receivable, Ending Balance	553
Insurance receivable	553
2020 Zogg fire
Insurance Receivable [Roll Forward]
Insurance Receivable, Beginning Balance	270
Accrued insurance recoveries	10
Reimbursements	(142)
Insurance Receivable, Ending Balance	138
Insurance receivable	347
2019 Kincade fire
Insurance Receivable [Roll Forward]
Insurance Receivable, Beginning Balance	414
Accrued insurance recoveries	0
Reimbursements	(25)
Insurance Receivable, Ending Balance	389
Insurance receivable	$ 430