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Income Taxes (Textual) (Details) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended
--- | --- | ---
Apr. 30, 2016 | Jun. 30, 2016 | Jun. 30, 2015
Southern California Edison |  |  |
Income Tax Disclosure [Line Items] |  |  |
Reduction in base revenue requirement balancing account | $ 234 |  |
IRS Examination | Tax Years 2010 to 2012 |  |  |
Income Tax Disclosure [Line Items] |  |  |
Tax liability |  |  | $ 94
IRS Examination | Southern California Edison | Tax Years 2012 to 2014 |  |  |
Income Tax Disclosure [Line Items] |  |  |
Tax liability |  | $ (79) |
Tax adjustments, pre tax |  | $ 133 |
IRS Examination | Southern California Edison | Tax Years 2010 to 2012 |  |  |
Income Tax Disclosure [Line Items] |  |  |
Tax liability |  |  | $ 100

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- Definition The increase (decrease) during the reporting period in the asset created by the regulatory convention in which costs and revenues associated with certain utility expenses (such as fuel) are accumulated but on which no return is earned. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
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- Definition Amount of increase (decrease) to previously recorded tax expense. Includes, but is not limited to, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, and IRS tax settlement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=68052875&loc=d3e28446-109314 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=68052875&loc=d3e28511-109314 + Details
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