Debt and Credit Agreements (Recovery and Term) (Details) - USD ($) $ in Millions	Sep. 30, 2024	Jun. 30, 2024
SCE | 4.875% first and refunding mortgage bonds due in 2027
Debt
Debt, face amount	$ 500
Interest rate on debt (as a percent)	4.875%
SCE | 5.20% first and refunding mortgage bonds due in 2034
Debt
Debt, face amount	$ 900
Interest rate on debt (as a percent)	5.20%
SCE | 5.35% first and refunding mortgage bonds due 2026
Debt
Debt, face amount	$ 600
Interest rate on debt (as a percent)	5.35%
SCE | 5.15% first and refunding mortgage bonds due 2029
Debt
Debt, face amount	$ 600
Interest rate on debt (as a percent)	5.15%
SCE | 5.75% first and refunding mortgage bonds due 2054
Debt
Debt, face amount	$ 400
Interest rate on debt (as a percent)	5.75%
SCE | 5.45% first and refunding mortgage bonds due 2031
Debt
Debt, face amount	$ 750
Interest rate on debt (as a percent)	5.45%
SCE | 4.40% first and refunding mortgage bonds due 2026
Debt
Debt, face amount	$ 500
Interest rate on debt (as a percent)	4.40%
Edison International Parent and Other | 5.45% Senior notes due 2029
Debt
Debt, face amount		$ 500
Interest rate on debt (as a percent)		5.45%