XML 140 R122.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Commitments and Contingencies (Current Wildfire Insurance Coverage) (Details) - USD ($) | 4 Months Ended | 12 Months Ended | 13 Months Ended |  |
--- | --- | --- | --- | --- | ---
May 31, 2019 | Dec. 31, 2019 | May 31, 2019 | Dec. 31, 2018 | Jun. 30, 2020 | Dec. 31, 2018 | Feb. 28, 2019 | Dec. 31, 2017
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Regulatory assets |  |  |  | $ 5,380,000,000 |  | $ 5,380,000,000 |  | $ 4,914,000,000
SCE |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Wildfire insurance coverage |  |  |  | 1,000,000,000 |  | 300,000,000 |  |
Self insurance | $ 10,000,000 |  | $ 10,000,000 | 10,000,000 |  | 10,000,000 |  |
Co-insurance | 15,000,000 |  | 15,000,000 |  |  |  |  |
Wildfire insurance expense |  |  |  | 237,000,000 |  |  |  |
Regulatory assets |  |  |  | 5,380,000,000 |  | 5,380,000,000 |  | $ 4,914,000,000
SCE | Forecast |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Wildfire insurance coverage | 700,000,000 |  | 1,000,000,000 |  | $ 750,000,000 |  |  |
Self insurance | $ 10,000,000 |  | $ 10,000,000 |  | 10,000,000 |  |  |
Co-insurance |  |  |  |  | $ 115,000,000 |  |  |
Wildfire insurance expense |  | $ 321,000,000 |  |  |  |  |  |
Wildfire insurance costs | SCE |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Regulatory assets |  |  |  | $ 128,000,000 |  | $ 128,000,000 |  |
Subsequent event | SCE |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Net Regulatory Assets |  |  |  |  |  |  | $ 107,000,000 |
Revenue subject to refund | Subsequent event | Wildfire liability insurance recovery | SCE |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Net Regulatory Assets |  |  |  |  |  |  | $ 107,000,000 |

X
- Definition Co-Insurance Per Wildfire Occurrence + References No definition available. + Details
Name: | eix_CoInsurancePerWildfireOccurrence
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Self Insurance Retention Per Wildfire Occurrence + References No definition available. + Details
Name: | eix_SelfInsuranceRetentionPerWildfireOccurrence
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Wildfire Insurance Coverage + References No definition available. + Details
Name: | eix_WildfireInsuranceCoverage
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Wildfire Insurance Expense + References No definition available. + Details
Name: | eix_WildfireInsuranceExpense
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The net amount of all regulatory assets less all regulatory liabilities as of the end of the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382 + Details
Name: | us-gaap_NetRegulatoryAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are not expected to be recovered through revenue sources within one year or the normal operating cycle if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382 + Details
Name: | us-gaap_RegulatoryAssetsNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | dei_LegalEntityAxis=eix_SouthernCaliforniaEdisonCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementScenarioAxis=us-gaap_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryAssetAxis=eix_WildfireInsuranceCostsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | eix_RegulatoryAssetsAndLiabilitiesAxis=us-gaap_RevenueSubjectToRefundMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | eix_ComponentofBalancingAccountAxis=eix_WildfireLiabilityInsuranceRecoveryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |