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Regulatory Assets and Liabilities (Balancing Accounts) (Details) - SCE - USD ($) $ in Millions | Mar. 31, 2025 | Dec. 31, 2024
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Regulatory Assets and Liabilities |  |
Assets, net of liabilities | $ 1,883 | $ 423
Energy procurement related costs |  |
Regulatory Assets and Liabilities |  |
Assets, net of liabilities | (106) | (97)
Public purpose and energy efficiency |  |
Regulatory Assets and Liabilities |  |
Assets, net of liabilities | (1,930) | (1,708)
GRC related balancing accounts |  |
Regulatory Assets and Liabilities |  |
Assets, net of liabilities | 992 | 976
FERC related balancing accounts |  |
Regulatory Assets and Liabilities |  |
Assets, net of liabilities | 131 | 125
Wildfire risk mitigation and insurance |  |
Regulatory Assets and Liabilities |  |
Assets, net of liabilities | 731 | 741
TKM Settlement cost recovery |  |
Regulatory Assets and Liabilities |  |
Assets, net of liabilities | 1,556 | 0
Wildfire and drought restoration |  |
Regulatory Assets and Liabilities |  |
Assets, net of liabilities | 284 | 238
Tax accounting memorandum account |  |
Regulatory Assets and Liabilities |  |
Assets, net of liabilities | (88) | (40)
Other |  |
Regulatory Assets and Liabilities |  |
Assets, net of liabilities | $ 313 | $ 188

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- Definition The net amount of all regulatory assets less all regulatory liabilities as of the end of the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 980 -SubTopic 340 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478742/980-340-50-1 + Details
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