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Variable Interest Entities (Details) (USD $) |  |  | 3 Months Ended | 6 Months Ended | 1 Months Ended |  | 3 Months Ended |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2012 | Dec. 31, 2011 | Jun. 30, 2012 SCE Trust I | Jun. 30, 2012 SCE Trust I | May 31, 2012 SCE Trust I Trust Securities | Jun. 30, 2012 SCE Trust I Trust Securities | Jun. 30, 2012 SCE Trust I Series F | May 31, 2012 SCE Trust I Series F | Jun. 30, 2012 Variable Interest Entity, Not Primary Beneficiary SCE Power Purchase Contracts agreements contracts MW | Jun. 30, 2011 Variable Interest Entity, Not Primary Beneficiary SCE Power Purchase Contracts | Jun. 30, 2012 Variable Interest Entity, Not Primary Beneficiary SCE Power Purchase Contracts agreements contracts MW | Jun. 30, 2011 Variable Interest Entity, Not Primary Beneficiary SCE Power Purchase Contracts
Details of projects or entities |  |  |  |  |  |  |  |  |  |  |  |
Number of projects |  |  |  |  |  |  |  |  | 16 |  | 16 |
Power purchase agreement with tolling agreement (in agreements) |  |  |  |  |  |  |  |  | 6 |  | 6 |
Power purchase agreement with qualified facilities (in contracts) |  |  |  |  |  |  |  |  | 10 |  | 10 |
Power generating capacity for majority interest (in megawatts) |  |  |  |  |  |  |  |  | 3,820 |  | 3,820 |
Payments to unconsolidated VIEs, power purchase contracts |  |  |  |  |  |  |  |  | $ 57,000,000 | $ 83,000,000 | $ 134,000,000 | $ 169,000,000
Unconsolidated Trust |  |  |  |  |  |  |  |  |  |  |  |
Trust securities, percentage rate |  |  |  |  | 5.625% |  | 5.625% |  |  |  |  |
Trust securities, liquidation preference (in dollars per share) |  |  |  |  | $ 25 |  | $ 2,500 | $ 2,500 |  |  |  |
Trust securities, liquidation preference |  |  |  |  | 475,000,000 |  |  |  |  |  |  |
Common stock | 2,168,000,000 | 2,168,000,000 | 10,000 | 10,000 | 10,000 |  |  |  |  |  |  |
Preferred and preference stock | 1,795,000,000 | 1,045,000,000 |  |  |  | 475,000,000 | 475,000,000 | 475,000,000 |  |  |  |
Dividend income and accrued dividend payments |  |  | $ 3,000,000 | $ 3,000,000 |  |  |  |  |  |  |  |

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- Definition Number of projects in which the entity has an interest. + References No definition available. + Details
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- Definition This element represents number of qualifying facilities agreements, in which the entity has a variable interest. + References No definition available. + Details
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- Definition This element represents number of tolling agreements, in which the entity has a variable interest. + References No definition available. + Details
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- Definition Payments for electricity purchased during the reporting period under power purchase contracts with unconsolidated VIEs. + References No definition available. + Details
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- Definition Power generating capacity of the project owned and/or controlled by the entity. + References No definition available. + Details
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- Definition Value of each class of issued preferred and preference stock that may be calculated differently depending on whether the stock is issued at par value or no par value. + References No definition available. + Details
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- Definition Variable Interest Entities, Dividend Income and Distributions + References No definition available. + Details
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- Definition Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity. + 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 210.5-02.29) -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 30 -Article 5 + Details
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- Definition The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph d -Article 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(d)(1)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 4, 6 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: 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 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21484-112644 + Details
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