v3.26.1
Summary of Significant Accounting Policies - Schedule of Changes in Allowance for Uncollectible Accounts (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Credit Loss Roll Forward      
Allowance for uncollectible accounts $ 39   $ 49
SCE      
Credit Loss Roll Forward      
Beginning balance 402 $ 390  
Current period provision for uncollectible accounts 62 81  
Write-offs, net of recoveries (78) (131)  
Ending balance 386 340  
Recovery from customers, incremental costs 44 66  
Allowance for uncollectible accounts 39   $ 49
SCE | Customers      
Credit Loss Roll Forward      
Beginning balance 360 372  
Current period provision for uncollectible accounts 60 78  
Write-offs, net of recoveries (76) (128)  
Ending balance 344 322  
SCE | All others      
Credit Loss Roll Forward      
Beginning balance 42 18  
Current period provision for uncollectible accounts 2 3  
Write-offs, net of recoveries (2) (3)  
Ending balance $ 42 $ 18