Debt and Credit Agreements - Long-Term Debt Maturities (Details) $ in Millions	Dec. 31, 2024 USD ($)
Debt Instrument [Line Items]
2025	$ 2,049
2026	1,900
2027	2,501
2028	2,942
2029	3,363
SCE
Debt Instrument [Line Items]
2025	1,249
2026	1,900
2027	1,901
2028	1,792
2029	$ 2,313