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WILDFIRE-RELATED CONTINGENCIES (Insurance Receivable) (Details) - 2022 Mosquito fire
$ in Millions
9 Months Ended
Sep. 30, 2026
USD ($)
Loss Contingencies [Line Items]  
Insurance receivable $ 496
Insurance Receivable [Roll Forward]  
Insurance receivable, beginning balance 281
Accrued insurance recoveries 133
Reimbursements (287)
Insurance receivable, ending balance $ 127