Debt and Credit Agreements (Recovery and Term) (Details) - SCE $ in Millions	Mar. 31, 2024 USD ($)
4.875% first and refunding mortgage bonds due in 2027
Debt
Debt, face amount	$ 500
Interest rate on debt (as a percent)	4.875%
5.20% first and refunding mortgage bonds due in 2034
Debt
Debt, face amount	$ 900
Interest rate on debt (as a percent)	5.20%
5.35% first and refunding mortgage bonds due 2026
Debt
Debt, face amount	$ 600
Interest rate on debt (as a percent)	5.35%
5.15% first and refunding mortgage bonds due 2029
Debt
Debt, face amount	$ 600
Interest rate on debt (as a percent)	5.15%
5.75% first and refunding mortgage bonds due 2054
Debt
Debt, face amount	$ 400
Interest rate on debt (as a percent)	5.75%