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Regulatory Assets and Liabilities (Balancing Accounts) (Details) - SCE - USD ($) $ in Millions | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | $ 1,487 | $ 2,289
Energy resource recovery account |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | (141) | 1,580
Portfolio allocation balancing account |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | 929 | (73)
New system generation balancing account |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | 237 | (63)
Public purpose programs and energy efficiency programs |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | (1,805) | (1,577)
Base revenue requirement balancing account |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | 1,006 | 1,108
GRC wildfire mitigation balancing accounts |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | 174 | 67
Residential uncollectibles balancing account |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | 51 |
Greenhouse gas auction revenue and low carbon fuel standard revenue |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | (393) | (289)
FERC balancing accounts |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | (208) | (123)
Wildfire and drought restoration accounts |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | 432 | 352
Wildfire-related memorandum accounts |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | 985 | 1,168
Risk management balancing account |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | (74) |
COVID 19-related memorandum accounts |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | 66 | 67
Customer service re-platform (CSRP) |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | 96 | 64
Tax accounting memorandum account and pole loading balancing account |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | 61 | 90
Excess Bond and Power Charge Balancing Account |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | 11 | (56)
Other balancing account |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | $ 60 | $ (26)

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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//1943274/2147481878/980-340-50-1 + Details
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