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WILDFIRE-RELATED CONTINGENCIES (Insurance) (Details) - USD ($)
$ in Millions
3 Months Ended
Apr. 29, 2021
Mar. 31, 2021
Aug. 31, 2020
Loss Contingencies [Line Items]      
Prepaid Insurance   $ 313  
Insurance premium costs, recovery, coverage amount   1,400  
Insurance Coverage for Wildfire Events      
Loss Contingencies [Line Items]      
Initial self-insured retention per occurrence   60  
Insurance Coverage for Wildfire Events | April 12, 2021 to April 1, 2022 | Subsequent event      
Loss Contingencies [Line Items]      
Liability insurance coverage $ 268    
Reinsurance 32    
Costs for insurance coverage $ 220    
Insurance Coverage for Wildfire Events | July 1, 2020 to July 1, 2021      
Loss Contingencies [Line Items]      
Reinsurance     $ 11
Insurance Coverage for Wildfire Events | August 1, 2020 to August 1, 2021      
Loss Contingencies [Line Items]      
Liability insurance coverage     $ 600
Insurance Coverage for Wildfire Events | August 1, 2021 to August 1, 2022      
Loss Contingencies [Line Items]      
Costs for insurance coverage   516  
Insurance Coverage For Non-Wildfire Events | August 1, 2020 to August 1, 2021      
Loss Contingencies [Line Items]      
Liability insurance coverage   700  
Costs for insurance coverage   $ 152