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Debt and Credit Agreements (Details) (USD $) |  |  |  |  |  |  |  |  |  |  | 0 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2014 | Dec. 31, 2013 | Jun. 30, 2014 Southern California Edison | Dec. 31, 2013 Southern California Edison | May 31, 2014 Southern California Edison First and refunding mortgage bonds | Jan. 31, 2014 Southern California Edison First and refunding mortgage bonds | Jun. 30, 2014 Edison International Parent and Other Revolving credit facility | Dec. 31, 2013 Edison International Parent and Other Revolving credit facility | Jun. 30, 2014 Commercial paper Southern California Edison Revolving credit facility | Dec. 31, 2013 Commercial paper Southern California Edison Revolving credit facility | Jun. 30, 2014 Letters of credit Southern California Edison Revolving credit facility | Jun. 30, 2014 Letters of credit Southern California Edison Revolving credit facility
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Issuance of debt |  |  |  |  | $ 400,000,000 | $ 300,000,000 |  |  |  |  |  |
Outstanding borrowings |  |  |  |  |  |  |  |  | (287,000,000) | (175,000,000) |  |
Weighted average interest rate (as a percent) |  |  |  |  |  |  | 0.38% | 0.55% | 0.20% | 0.24% |  |
Commitment |  |  |  |  |  |  | 1,250,000,000 |  | 2,750,000,000 |  |  |
Outstanding letters of credit |  |  |  |  |  |  |  |  |  |  |  | (151,000,000)
Letters of credit expiration period |  |  |  |  |  |  |  |  |  |  | 12 months |
Short-term debt | $ (1,253,000,000) | $ (209,000,000) | $ (587,000,000) | $ (175,000,000) |  |  | $ (666,000,000) | $ (34,000,000) |  |  |  |
Stated interest rate on May 2014 mortgage bonds due in May 2017 |  |  |  |  | 1.125% |  |  |  |  |  |  |

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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount borrowed under the credit facility as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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