WILDFIRE-RELATED CONTINGENCIES (Insurance Receivable) (Details) - USD ($) $ in Millions		3 Months Ended
	Apr. 20, 2022	Mar. 31, 2022
Insurance Receivable [Roll Forward]
Insurance Receivable, Beginning Balance		$ 1,247
Accrued insurance recoveries		0
Reimbursements		43
Insurance Receivable, Ending Balance		1,204
2021 Dixie fire
Insurance Receivable [Roll Forward]
Insurance Receivable, Beginning Balance		563
Accrued insurance recoveries		(1)
Reimbursements		0
Insurance Receivable, Ending Balance		562
Insurance receivable		562
2020 Zogg fire
Insurance Receivable [Roll Forward]
Insurance Receivable, Beginning Balance		270
Accrued insurance recoveries		1
Reimbursements		43
Insurance Receivable, Ending Balance		228
Insurance receivable		338
2020 Zogg fire | Subsequent Event
Insurance Receivable [Roll Forward]
Reimbursements	$ 28
2019 Kincade fire
Insurance Receivable [Roll Forward]
Insurance Receivable, Beginning Balance		414
Accrued insurance recoveries		0
Reimbursements		0
Insurance Receivable, Ending Balance		414
Insurance receivable		$ 430