Variable Interest Entities - Narrative (Details) - SCE $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($) MW	Dec. 31, 2023 USD ($) MW	Sep. 30, 2024 MW
SCE Recovery Funding LLC
Variable Interest Entity
Debt carrying amount	$ 1,600
SCE Power Purchases Contracts
Variable Interest Entity
Power generating capacity of projects owned controlled | MW	5,200	3,343	200
Power Purchase Agreement
Variable Interest Entity
Amounts paid to VIEs	$ 778	$ 528