Derivative Instruments (Hedging Activities) (Details) - SCE - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Derivative Instruments, Gain (Loss) [Line Items]
Realized	$ (55)	$ (7)	$ (126)	$ 109
Unrealized	$ (9)	$ (114)	$ (37)	$ (378)