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Property, Plant and Equipment (Textual) (Details) - SCE - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Property, Plant and Equipment [Line Items] |  |  |
Capitalized software costs | $ 2,100 | $ 2,000 |
Capitalized software, accumulated amortization | 900 | 700 |
Capitalized software, amortization expense | 358 | $ 344 | $ 311
Capitalized software, estimated amortization year 1 | 359 |  |
Capitalized software, estimated amortization year 2 | 317 |  |
Capitalized software, estimated amortization year 3 | 253 |  |
Capitalized software, estimated amortization year 4 | 168 |  |
Capitalized software, estimated amortization year 5 | $ 61 |  |
Capitalized software costs | Minimum |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful lives | 5 years |  |
Capitalized software costs | Maximum |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful lives | 7 years |  |

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- Definition For each balance sheet presented, the amount of accumulated amortization for capitalized computer software costs. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 985 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481283/985-20-50-1 + Details
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