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Preferred and Preference Stock of Utility (Textual) (Details) (Southern California Edison, USD $) In Millions, except Share data, unless otherwise specified | Dec. 31, 2014
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Cumulative Preferred Stock 100 Dollars Par Value |
Preferred and Preference Stock of Utility |
Preferred Stock, Par or Stated Value Per Share | $ 100 us-gaap_PreferredStockParOrStatedValuePerShare / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember / us-gaap_StatementClassOfStockAxis = eix_CumulativePreferredStock100DollarsParValueMember
Preferred Stock, Shares Authorized | 12,000,000 us-gaap_PreferredStockSharesAuthorized / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember / us-gaap_StatementClassOfStockAxis = eix_CumulativePreferredStock100DollarsParValueMember
Preferred and Preference Stock |
Preferred and Preference Stock of Utility |
Dividends payable | $ 18 us-gaap_DividendsPayableCurrentAndNoncurrent / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember / us-gaap_StatementClassOfStockAxis = us-gaap_PreferredStockMember
Cumulative preferred stock 25 dollars par value |
Preferred and Preference Stock of Utility |
Preferred Stock, Par or Stated Value Per Share | $ 25 us-gaap_PreferredStockParOrStatedValuePerShare / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember / us-gaap_StatementClassOfStockAxis = eix_CumulativePreferredStock25DollarsParValueMember
Preferred Stock, Shares Authorized | 24,000,000 us-gaap_PreferredStockSharesAuthorized / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember / us-gaap_StatementClassOfStockAxis = eix_CumulativePreferredStock25DollarsParValueMember
No par value: |
Preferred and Preference Stock of Utility |
Preferred Stock, Shares Authorized | 50,000,000 us-gaap_PreferredStockSharesAuthorized / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember / us-gaap_StatementClassOfStockAxis = eix_PreferenceStockNoParValueMember

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- Definition Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph a -Article 7 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph 5 -Article 9 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer. + 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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- Definition The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. + 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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