Commitments and Contingencies - Schedule of Payments to be Made Under Settlement Agreements (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024	Oct. 31, 2021
Commitments and Contingencies
Wildfire-related claims	$ 55	$ 60
Wildfire-related claims	803	941
Charge for wildfire-related claims	858	1,001
SCE
Commitments and Contingencies
Wildfire-related claims	55	60
Wildfire-related claims	803	941
Charge for wildfire-related claims		1,001
2017/2018 Wildfire/Mudslide Events
Commitments and Contingencies
Wildfire-related claims	38
Wildfire-related claims	289	38
Charge for wildfire-related claims	327	426
Estimate of possible loss	256	340
2017/2018 Wildfire/Mudslide Events | Settled Litigation
Commitments and Contingencies
Wildfire-related claims	17	29
2017/2018 Wildfire/Mudslide Events | SED Settlement
Commitments and Contingencies
Wildfire-related claims	33
2017/2018 Wildfire/Mudslide Events | SCE
Commitments and Contingencies
Wildfire-related claims		48
Wildfire-related claims		378
Charge for wildfire-related claims		426
2017/2018 Wildfire/Mudslide Events | SED Settlement
Commitments and Contingencies
Wildfire-related claims	21	19
2017/2018 Wildfire/Mudslide Events | SED Settlement | SCE
Commitments and Contingencies
Charge for wildfire-related claims			$ 550
Other Wildfire Events
Commitments and Contingencies
Wildfire-related claims	17
Wildfire-related claims	514
Charge for wildfire-related claims	$ 531	575
Other Wildfire Events | SCE
Commitments and Contingencies
Wildfire-related claims		12
Wildfire-related claims		563
Charge for wildfire-related claims		$ 575