v3.25.2
Summary of Significant Accounting Policies - Schedule of Changes in Allowance for Uncollectible Accounts (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Credit Loss Roll Forward          
Allowance for uncollectible accounts $ 47   $ 47   $ 43
SCE          
Credit Loss Roll Forward          
Beginning balance 340 $ 363 390 $ 364  
Current period provision for uncollectible accounts 88 57 169 118  
Write-offs, net of recoveries (71) (56) (202) (118)  
Ending balance 357 364 357 364  
Recovery from customers, incremental costs 69 46 135 96  
Allowance for uncollectible accounts 47   47   $ 43
SCE | Customers          
Credit Loss Roll Forward          
Beginning balance 322 347 372 347  
Current period provision for uncollectible accounts 82 54 160 114  
Write-offs, net of recoveries (69) (52) (197) (112)  
Ending balance 335 349 335 349  
SCE | All others          
Credit Loss Roll Forward          
Beginning balance 18 16 18 17  
Current period provision for uncollectible accounts 6 3 9 4  
Write-offs, net of recoveries (2) (4) (5) (6)  
Ending balance $ 22 $ 15 $ 22 $ 15