Commitments and Contingencies (Expense summary) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Mar. 31, 2024	Jun. 30, 2024	Jun. 30, 2023
2017/2018 Wildfire/Mudslide Events
Commitments and Contingencies
Charge for wildfire-related claims		$ 490	$ 90
Expected revenue from CPUC and FERC customers		(27)	(6)
Total pre-tax charge		463	84
Income tax benefit		(130)	(23)
Total after-tax charge		333	61
Other Wildfires
Commitments and Contingencies
Charge for wildfire-related claims		180	6
Expected insurance recoveries		(55)
Expected revenue from CPUC and FERC customers		(7)
Total pre-tax charge		118	6
Income tax benefit		(33)	(2)
Total after-tax charge		85	4
Other Wildfires | Edison Insurance Services-EIS
Commitments and Contingencies
Charge for wildfire-related claims	$ 1
Other Wildfires | SCE
Commitments and Contingencies
Charge for wildfire-related claims		180	6
Expected insurance recoveries		(56)
Expected revenue from CPUC and FERC customers		(7)
Total pre-tax charge		117	6
Income tax benefit		(33)	(2)
Total after-tax charge		$ 84	$ 4