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Debt and Credit Agreements (Recovery and Term) (Details)
$ in Millions
12 Months Ended
Dec. 31, 2022
USD ($)
Debt Instrument [Line Items]  
Outstanding borrowings $ 285
SCE | Series 2021-A senior secured recovery bonds | Minimum  
Debt Instrument [Line Items]  
Interest rate on debt (as a percent) 0.86%
SCE | Series 2021-A senior secured recovery bonds | Maximum  
Debt Instrument [Line Items]  
Interest rate on debt (as a percent) 3.24%
SCE | 0.55% term loan due 2023  
Debt Instrument [Line Items]  
Outstanding borrowings $ 730
SCE | 0.55% term loan due 2023 | SOFR  
Debt Instrument [Line Items]  
Basis points 0.55%
Edison International Parent and Other | 0.70% term loan due April 2023  
Debt Instrument [Line Items]  
Debt, face amount $ 600
Edison International Parent and Other | 0.70% term loan due April 2023 | SOFR  
Debt Instrument [Line Items]  
Basis points 0.70%
Edison International Parent and Other | 0.95% term loan due in November 2023  
Debt Instrument [Line Items]  
Debt, face amount $ 400
Edison International Parent and Other | 0.95% term loan due in November 2023 | SOFR  
Debt Instrument [Line Items]  
Basis points 0.95%