Commitments and Contingencies - Schedule of Expected Recoveries From Insurance and Third Parties (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Commitments and Contingencies
Total	$ 1,367	$ 1,266
Other Wildfire Events
Commitments and Contingencies
Total	329	353
Eaton Fire
Commitments and Contingencies
Total	1,038	913
Expected recoveries from customer-funded wildfire self-insurance
Commitments and Contingencies
Total	682	709
Expected recoveries from customer-funded wildfire self-insurance \| Other Wildfire Events
Commitments and Contingencies
Total	0	0
Expected recoveries from customer-funded wildfire self-insurance \| Eaton Fire
Commitments and Contingencies
Total	682	709
Long-term receivables from insurance and third parties
Commitments and Contingencies
Total	170	237
Long-term receivables from insurance and third parties \| Other Wildfire Events
Commitments and Contingencies
Total	170	237
Long-term receivables from insurance and third parties \| Eaton Fire
Commitments and Contingencies
Total	0	0
Long-term receivables from Wildfire Fund recoveries
Commitments and Contingencies
Total	295	134
Loss contingency accrued recoveries	0
Long-term receivables from Wildfire Fund recoveries \| Other Wildfire Events
Commitments and Contingencies
Total	0	0
Long-term receivables from Wildfire Fund recoveries \| Eaton Fire
Commitments and Contingencies
Total	295	134
FERC-related balancing accounts
Commitments and Contingencies
Total	74	90
FERC-related balancing accounts \| Other Wildfire Events
Commitments and Contingencies
Total	13	20
FERC-related balancing accounts \| Eaton Fire
Commitments and Contingencies
Total	61	70
CPUC-regulatory assets
Commitments and Contingencies
Total	146	96
CPUC-regulatory assets \| Other Wildfire Events
Commitments and Contingencies
Total	146	96
CPUC-regulatory assets \| Eaton Fire
Commitments and Contingencies
Total	$ 0	$ 0