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Other Investments (Amortized Cost and Fair Value of Nuclear Decommissioning Trusts) (Details) (Southern California Edison, USD $) In Millions, unless otherwise specified | 6 Months Ended |
--- | --- | ---
Jun. 30, 2014 | Dec. 31, 2013
Nuclear Decommissioning Trusts Disclosures |  |
Total Investments, Amortized Cost | $ 2,846 | $ 2,770
Total Investments, Fair Value | 4,740 | 4,494
Stocks |  |
Nuclear Decommissioning Trusts Disclosures |  |
Longest Maturity Dates (in years) | 0 |
Total Investments, Amortized Cost | 683 | 656
Total Investments, Fair Value | 2,332 | 2,208
Municipal bonds |  |
Nuclear Decommissioning Trusts Disclosures |  |
Longest Maturity Dates (in years) | 2051 |
Total Investments, Amortized Cost | 688 | 675
Total Investments, Fair Value | 812 | 756
U.S. government and agency securities |  |
Nuclear Decommissioning Trusts Disclosures |  |
Longest Maturity Dates (in years) | 2044 |
Total Investments, Amortized Cost | 824 | 902
Total Investments, Fair Value | 881 | 947
Corporate bonds |  |
Nuclear Decommissioning Trusts Disclosures |  |
Longest Maturity Dates (in years) | 2054 |
Total Investments, Amortized Cost | 339 | 208
Total Investments, Fair Value | 390 | 241
Short-term investments and receivables/payables |  |
Nuclear Decommissioning Trusts Disclosures |  |
Longest Maturity Dates (in years) | One-year |
Total Investments, Amortized Cost | 312 | 329
Total Investments, Fair Value | $ 325 | $ 342

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- Definition Decommissioning Trust Investments + References No definition available. + Details
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- Definition Decommissioning Trust Investments Amortized Cost + References No definition available. + Details
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- Definition The maturity dates for decommissioning trust investments. + References No definition available. + Details
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- Details
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