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Regulatory Assets and Liabilities (Schedule of Regulatory Liabilities) (Details) - USD ($) $ in Millions | Jun. 30, 2016 | Dec. 31, 2015
--- | --- | ---
Regulatory Liabilities [Line Items] |  |
Regulatory liabilities | $ 1,072 | $ 1,128
Regulatory liabilities | 6,017 | 5,676
Southern California Edison |  |
Regulatory Liabilities [Line Items] |  |
Regulatory liabilities | 1,072 | 1,128
Regulatory liabilities | 6,017 | 5,676
Total regulatory liabilities | 7,089 | 6,804
Southern California Edison | Regulatory balancing accounts |  |
Regulatory Liabilities [Line Items] |  |
Regulatory liabilities | 1,050 | 1,106
Regulatory liabilities | 1,392 | 1,314
Southern California Edison | Other |  |
Regulatory Liabilities [Line Items] |  |
Regulatory liabilities | 22 | 22
Regulatory liabilities | 60 | 79
Southern California Edison | Costs of removal |  |
Regulatory Liabilities [Line Items] |  |
Regulatory liabilities | 2,825 | 2,781
Southern California Edison | Recoveries in excess of ARO liabilities |  |
Regulatory Liabilities [Line Items] |  |
Regulatory liabilities | $ 1,740 | $ 1,502

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- Definition The amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 405 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6500807&loc=d3e48068-110394 + Details
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- Definition The amount for the individual regulatory current liability as itemized in a table of regulatory current liabilities as of the end of the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 405 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6500807&loc=d3e48068-110394 + Details
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