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Debt and Credit Agreements (Long-term Debt) (Details) - USD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Debt Instrument [Line Items] |  |
Current portion of long-term debt | $ (79) | $ (481)
Long-term debt | 14,632 | 11,642
Edison International Parent and Other |  |
Debt Instrument [Line Items] |  |
Other long-term debt | 0 | 29
Current portion of long-term debt | 0 | (2)
Unamortized debt discount and issuance costs, net | (10) | (13)
Long-term debt | 1,740 | 1,214
Edison International Parent and Other | Debentures and notes |  |
Debt Instrument [Line Items] |  |
Long-term debt | $ 1,750 | 1,200
Edison International Parent and Other | Debentures and notes | Minimum |  |
Debt Instrument [Line Items] |  |
Interest rate on debt (as a percent) | 2.125% |
Edison International Parent and Other | Debentures and notes | Maximum |  |
Debt Instrument [Line Items] |  |
Interest rate on debt (as a percent) | 4.125% |
SCE |  |
Debt Instrument [Line Items] |  |
Current portion of long-term debt | $ (79) | (479)
Unamortized debt discount and issuance costs, net | (137) | (88)
Long-term debt | 12,892 | 10,428
SCE | Debentures and notes |  |
Debt Instrument [Line Items] |  |
Long-term debt | $ 306 | 307
SCE | Debentures and notes | Minimum |  |
Debt Instrument [Line Items] |  |
Interest rate on debt (as a percent) | 5.06% |
SCE | Debentures and notes | Maximum |  |
Debt Instrument [Line Items] |  |
Interest rate on debt (as a percent) | 6.65% |
SCE | First and refunding mortgage bonds |  |
Debt Instrument [Line Items] |  |
Long-term debt | $ 12,050 | 9,779
SCE | First and refunding mortgage bonds | Minimum |  |
Debt Instrument [Line Items] |  |
Interest rate on debt (as a percent) | 1.845% |
SCE | First and refunding mortgage bonds | Maximum |  |
Debt Instrument [Line Items] |  |
Interest rate on debt (as a percent) | 6.05% |
SCE | Pollution-control bonds |  |
Debt Instrument [Line Items] |  |
Long-term debt | $ 752 | 909
SCE | Pollution-control bonds | Minimum |  |
Debt Instrument [Line Items] |  |
Interest rate on debt (as a percent) | 1.875% |
SCE | Pollution-control bonds | Maximum |  |
Debt Instrument [Line Items] |  |
Interest rate on debt (as a percent) | 5.00% |
SoCore Energy |  |
Debt Instrument [Line Items] |  |
Other long-term debt |  | $ 29

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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