v3.26.1
Commitments and Contingencies - Schedule of Changes in Estimated Loss (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended 84 Months Ended
Jun. 30, 2026
Jun. 30, 2026
Jun. 30, 2026
Loss contingency accrual roll forward      
Loss contingency accrual, beginning balance   $ 1,306  
Shareholder-funded safety measures costs   512  
Amounts paid $ (309) (384) $ (11,252)
Loss contingency accrual, ending balance 1,434 1,434 1,434
2017/2018 Wildfire/Mudslide Events      
Loss contingency accrual roll forward      
Loss contingency accrual, beginning balance   192  
Shareholder-funded safety measures costs   0  
Amounts paid (10) (19) (9,707)
Loss contingency accrual, ending balance 173 173 173
Other Wildfire Events      
Loss contingency accrual roll forward      
Loss contingency accrual, beginning balance   217  
Shareholder-funded safety measures costs   1  
Amounts paid (62) (85) (1,028)
Loss contingency accrual, ending balance 133 133 133
Eaton Fire      
Loss contingency accrual roll forward      
Loss contingency accrual, beginning balance   897  
Shareholder-funded safety measures costs   511  
Amounts paid (237) (280) (517)
Loss contingency accrual, ending balance $ 1,128 $ 1,128 $ 1,128