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Commitments and Contingencies - Schedule of Payments to be Made Under Settlement Agreements (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024	Oct. 31, 2021
Commitments and Contingencies
Current portion of wildfire-related claims liabilities	$ 169	$ 60
Long term wildfire-related claims liabilities	568	941
Total balance at end of period	737	1,001
SCE
Commitments and Contingencies
Current portion of wildfire-related claims liabilities	169	60
Long term wildfire-related claims liabilities	568	941
Total balance at end of period		1,001
2017/2018 Wildfire/Mudslide Events
Commitments and Contingencies
Current portion of wildfire-related claims liabilities	36
Long term wildfire-related claims liabilities	232	38
Total balance at end of period	268	426
Estimate of possible loss	202	340
2017/2018 Wildfire/Mudslide Events \| Settled Litigation
Commitments and Contingencies
Current portion of wildfire-related claims liabilities	17	29
2017/2018 Wildfire/Mudslide Events \| SED Settlement
Commitments and Contingencies
Long term wildfire-related claims liabilities	30
2017/2018 Wildfire/Mudslide Events \| SCE
Commitments and Contingencies
Current portion of wildfire-related claims liabilities		48
Long term wildfire-related claims liabilities		378
Total balance at end of period		426
2017/2018 Wildfire/Mudslide Events \| SED Settlement
Commitments and Contingencies
Current portion of wildfire-related claims liabilities	19	19
2017/2018 Wildfire/Mudslide Events \| SED Settlement \| SCE
Commitments and Contingencies
Total balance at end of period			$ 550
Other Wildfire Events
Commitments and Contingencies
Current portion of wildfire-related claims liabilities	133
Long term wildfire-related claims liabilities	336
Total balance at end of period	$ 469	575
Other Wildfire Events \| SCE
Commitments and Contingencies
Current portion of wildfire-related claims liabilities		12
Long term wildfire-related claims liabilities		563
Total balance at end of period		$ 575