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Preferred and Preference Stock of Utility (Schedule of Preferred and Preference Stock) (Details) (USD $) In Millions, except Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012
Preferred and Preference Stock of Utility |  |
Preferred and preference stock of utility | $ 1,753 | $ 1,759
Southern California Edison |  |
Preferred and Preference Stock of Utility |  |
Preferred and preference stock of utility | 1,795 | 1,795
Southern California Edison | 4.08% Series |  |
Preferred and Preference Stock of Utility |  |
Shares Outstanding (shares) | 650,000 |
Redemption Price (in dollars per share) | $ 25.5 |
Preferred stock before issuance costs | 16 | 16
Preference stock (as a percent) | 4.08% |
Southern California Edison | 4.24% Series |  |
Preferred and Preference Stock of Utility |  |
Shares Outstanding (shares) | 1,200,000 |
Redemption Price (in dollars per share) | $ 25.8 |
Preferred stock before issuance costs | 30 | 30
Preference stock (as a percent) | 4.24% |
Southern California Edison | 4.32% Series |  |
Preferred and Preference Stock of Utility |  |
Shares Outstanding (shares) | 1,653,429 |
Redemption Price (in dollars per share) | $ 28.75 |
Preferred stock before issuance costs | 41 | 41
Preference stock (as a percent) | 4.32% |
Southern California Edison | 4.78% Series |  |
Preferred and Preference Stock of Utility |  |
Shares Outstanding (shares) | 1,296,769 |
Redemption Price (in dollars per share) | $ 25.8 |
Preferred stock before issuance costs | 33 | 33
Preference stock (as a percent) | 4.78% |
Southern California Edison | Preferred and Preference Stock |  |
Preferred and Preference Stock of Utility |  |
Preferred stock before issuance costs | 1,795 | 1,795
Less issuance costs | (42) | (36)
Preferred and preference stock of utility | 1,753 | 1,759
Southern California Edison | 5.07% Series A (variable and noncumulative) |  |
Preferred and Preference Stock of Utility |  |
Shares Outstanding (shares) | 3,250,000 |
Redemption Price (in dollars per share) | $ 100 |
Preferred stock before issuance costs | 325 | 325
Preference stock (as a percent) | 4.32% |
Southern California Edison | 6.125% Series B (noncumulative) |  |
Preferred and Preference Stock of Utility |  |
Shares Outstanding (shares) | 2,000,000 |
Redemption Price (in dollars per share) | $ 100 |
Preferred stock before issuance costs | 0 | 200
Preference stock (as a percent) | 6.125% |
Southern California Edison | 6.00% Series C (noncumulative) |  |
Preferred and Preference Stock of Utility |  |
Shares Outstanding (shares) | 2,000,000 |
Redemption Price (in dollars per share) | $ 100 |
Preferred stock before issuance costs | 0 | 200
Preference stock (as a percent) | 6.00% |
Southern California Edison | 6.50% Series D (cumulative) |  |
Preferred and Preference Stock of Utility |  |
Shares Outstanding (shares) | 1,250,000 |
Redemption Price (in dollars per share) | $ 100 |
Preferred stock before issuance costs | 125 | 125
Preference stock (as a percent) | 6.50% |
Southern California Edison | 6.25% Series E (cumulative) |  |
Preferred and Preference Stock of Utility |  |
Shares Outstanding (shares) | 350,000 |
Redemption Price (in dollars per share) | $ 1,000 |
Preferred stock before issuance costs | 350 | 350
Preference stock (as a percent) | 6.25% |
Southern California Edison | 5.625% Series F (cumulative) |  |
Preferred and Preference Stock of Utility |  |
Shares Outstanding (shares) | 190,004 |
Redemption Price (in dollars per share) | $ 2,500 |
Preferred stock before issuance costs | 475 | 475
Preference stock (as a percent) | 5.625% |
Southern California Edison | 5.10% Series G [Member] |  |
Preferred and Preference Stock of Utility |  |
Shares Outstanding (shares) | 160,004 |
Redemption Price (in dollars per share) | $ 2,500 |
Preferred stock before issuance costs | $ 400 | $ 0
Preference stock (as a percent) | 5.10% |

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- Definition This element represents the issuance costs related to cumulative preferred stock and preference stock. + References No definition available. + Details
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- Definition The amount of noncontrolling interest in subsidiary represented by preferred securities issued by the subsidiary. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.31) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 27 -Article 5 + Details
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- Definition The price per share at which the preferred stock of an entity that has priority over common stock in the distribution of dividends and in the event of liquidation of the entity is redeemed or may be called at. The redemption features of this preferred stock are solely within the control of the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21564-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21488-112644 + Details
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- Definition Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.28) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29 -Article 5 + Details
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