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Debt and Credit Agreements (Recovery and Term) (Details) - USD ($)
$ in Millions
1 Months Ended
Apr. 30, 2023
Mar. 31, 2023
Debt    
Outstanding borrowings   $ 1,250
SCE | 5.3% First and Refunding Mortgage Bonds    
Debt    
Debt, face amount   $ 750
Interest rate on debt (as a percent)   5.30%
SCE | 2.7% First and Refunding Mortgage Bonds    
Debt    
Debt, face amount   $ 450
Interest rate on debt (as a percent)   5.70%
SCE | Senior Secured Recovery Bonds Series-A 2023    
Debt    
Debt, face amount $ 775  
SCE | Senior Secured Recovery Bonds, Series 2023, Due 2042 [Member]    
Debt    
Debt, face amount $ 425  
Interest rate on debt (as a percent) 4.697%  
SCE | Senior Secured Recovery Bonds, Series 2023, Due 2049 [Member]    
Debt    
Debt, face amount $ 350  
Interest rate on debt (as a percent) 5.112%  
SCE | 0.55% term loan due 2023    
Debt    
Repayments of outstanding debt $ 730  
Edison International Parent and Other | Junior Subordinated Notes, Due 2053 [Member]    
Debt    
Debt, face amount   $ 500
Interest rate on debt (as a percent)   8.125%
Edison International Parent and Other | Junior Subordinated Notes, Due 2053 [Member] | US Treasury Rate    
Debt    
Variable rate on debt (as a percent)   3.864%