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Regulatory Assets and Liabilities (Balancing Accounts) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020
Regulatory Assets and Liabilities |  |
Percentage of vegetation management | 115.00% |
Percentage of Wildfire Covered Conductor Program | 110.00% |
SCE |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | $ 2,287 | $ 1,388
SCE | Energy resource recovery account |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | 759 | (89)
SCE | Portfolio allocation balancing account |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | (183) | 497
SCE | New system generation balancing account |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | 73 | (10)
SCE | Public purpose programs and energy efficiency programs |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | (1,066) | (1,130)
SCE | Base revenue requirement balancing account |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | 849 | 622
SCE | GRC wildfire mitigation balancing accounts |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | 12 |
SCE | Greenhouse gas auction revenue and low carbon fuel standard revenue |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | (298) | (125)
SCE | FERC balancing accounts |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | 55 | 12
SCE | Wildfire and drought restoration accounts |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | 299 | 361
SCE | Wildfire expense memorandum account |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | 1,456 | 1,104
SCE | COVID 19-related memorandum accounts |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | 94 | 176
SCE | Customer service re-platform memorandum account |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | 128 | 30
SCE | Tax accounting memorandum account and pole loading balancing account |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | 171 | (35)
SCE | Other balancing account |  |
Regulatory Assets and Liabilities |  |
Net regulatory assets (liabilities) | $ (62) | $ (25)

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- Definition Threshold percentage of authorized amount of vegetation management expenses to be tracked. + References No definition available. + Details
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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 -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382 + Details
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