Leases (Lease Expense) (Details) - SCE - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Leases
Total lease cost	$ 2,836	$ 3,293	$ 2,989
PPA Operating Leases
Leases
Operating lease cost	503	580	305
Variable lease cost	2,277	2,661	2,098
Short term lease cost			539
Total lease cost	2,780	3,241	2,942
Other operating leases
Leases
Total lease cost	$ 56	$ 52	$ 47