Leases (Lease Expense) (Details) - SCE - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Lessee, Lease, Description [Line Items]
Total lease cost	$ 3,293	$ 2,989	$ 2,076
PPA Operating Leases
Lessee, Lease, Description [Line Items]
Operating lease cost	580	305	111
Variable lease cost	2,661	2,098	1,918
Short term lease cost		539
Total lease cost	3,241	2,942	2,029
Other operating leases
Lessee, Lease, Description [Line Items]
Total lease cost	$ 52	$ 47	$ 47