XML 47 R35.htm IDEA: XBRL DOCUMENT
v3.19.2

Regulatory Assets and Liabilities (Tables) - Southern California Edison | 6 Months Ended
--- | ---
Jun. 30, 2019
Regulatory Assets [Line Items] |
Regulatory Assets Included on the Consolidated Balance Sheets | SCE's regulatory assets included on the consolidated balance sheets are:
(in millions) | June 30, 2019 |  | December 31, 2018
Current: |  |  |
Regulatory balancing accounts | $ | 987 |  |  | $ | 814 |
Power contracts | 285 |  |  | 305 |
Other | 22 |  |  | 14 |
Total current | 1,294 |  |  | 1,133 |
Long-term: |  |  |
Deferred income taxes, net of liabilities | 3,800 |  |  | 3,589 |
Pensions and other postretirement benefits | 278 |  |  | 271 |
Power contracts | 561 |  |  | 700 |
Unamortized investments, net of accumulated amortization | 113 |  |  | 118 |
Unamortized loss on reacquired debt | 148 |  |  | 153 |
Regulatory balancing accounts | 346 |  |  | 360 |
Environmental remediation | 132 |  |  | 134 |
Other | 91 |  |  | 55 |
Total long-term | 5,469 |  |  | 5,380 |
Total regulatory assets | $ | 6,763 |  |  | $ | 6,513 |
Regulatory Liabilities Included on the Consolidated Balance Sheets | SCE's regulatory liabilities included on the consolidated balance sheets are:
(in millions) | June 30, 2019 |  | December 31, 2018
Current: |  |  |
Regulatory balancing accounts | $ | 728 |  |  | $ | 1,080 |
Energy derivatives | 24 |  |  | 158 |
2018 GRC 1 | — |  |  | 274 |
Other | 15 |  |  | 20 |
Total current | 767 |  |  | 1,532 |
Long-term: |  |  |
Cost of removal | 2,737 |  |  | 2,769 |
Re-measurement of deferred taxes 2 | 2,530 |  |  | 2,776 |
Recoveries in excess of ARO liabilities 3 | 1,454 |  |  | 1,130 |
Regulatory balancing accounts | 1,591 |  |  | 1,344 |
Other postretirement benefits | 194 |  |  | 185 |
Other | 179 |  |  | 125 |
Total long-term | 8,685 |  |  | 8,329 |
Total regulatory liabilities | $ | 9,452 |  |  | $ | 9,861 |
1 | During 2018, SCE recorded CPUC revenue based on the 2017 authorized revenue requirement adjusted for the July 2017 cost of capital decision and Tax Reform pending the outcome of the 2018 GRC. SCE recorded regulatory liabilities associated with these adjustments. In May 2019, these regulatory liabilities were reversed due to the adoption of 2018 GRC final decision. For further information, see Note 1.
2 | SCE decreased its regulatory liability and recorded an income tax benefit of $69 million during the first six months of 2019 related to changes in the allocation of deferred tax re-measurement between customers and shareholders. For further information, see Note 8.
Schedule of Net Regulatory Balancing Accounts | The following table summarizes the significant components of regulatory balancing accounts included in the above tables of regulatory assets and liabilities:
(in millions) | June 30, 2019 |  | December 31, 2018
Asset (liability) |  |  |
Energy resource recovery account | $ | 636 |  |  | $ | 815 |
Portfolio allocation balancing account 1 | 143 |  |  | — |
New system generation balancing account | (81 | ) |  | (74 | )
Public purpose programs and energy efficiency programs | (1,285 | ) |  | (1,200 | )
Tax accounting memorandum account and pole loading balancing account 2 | (19 | ) |  | 28 |
Base revenue requirement balancing account 3 | (462 | ) |  | (628 | )
DOE litigation memorandum account | (70 | ) |  | (69 | )
Greenhouse gas auction revenue and low carbon fuel standard revenue | (102 | ) |  | (81 | )
FERC balancing accounts | (88 | ) |  | (180 | )
Catastrophic event memorandum account | 92 |  |  | 144 |
Wildfire expense memorandum account | 122 |  |  | 128 |
Fire risk mitigation memorandum account 4 | 97 |  |  | — |
Other | 31 |  |  | (133 | )
Liability | $ | (986 | ) |  | $ | (1,250 | )
1 | In May 2019, the CPUC approved a portfolio allocation balancing account to determine and pro-ratably recover from responsible bundled service and departing load customers the “above-market” costs of all generation resources that are eligible for cost recovery.
2 | The 2018 GRC final decision approved changes to expand the use of the two-way TAMA. The expanded TAMA will track revenue differences resulting from changes in income tax expense caused by net revenue changes, mandatory or elective tax law changes, tax accounting changes, tax procedural changes, or tax policy changes during the 2018 GRC period.
3 The base revenue requirement balancing account at June 30, 2019 includes recovery of $107 million of premiums related to a 12-month, $300 million wildfire insurance policy purchased in December 2017. 4 In March 2019, the CPUC approved a fire risk mitigation memorandum account to track costs related to the reduction of fire risk that are incremental to the amount in SCE's revenue requirement.

X
- Definition Schedule of Regulatory Balancing Accounts [Table Text Block] + References No definition available. + Details
Name: | eix_ScheduleofRegulatoryBalancingAccountsTableTextBlock
Namespace Prefix: | eix_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
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_RegulatoryAssetLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of assets that are created when regulatory agencies permit public utilities to defer certain costs included in rate-setting to the balance sheet. + 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 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 715 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501251&loc=d3e52485-110419 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 340 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44264-110382 + Details
Name: | us-gaap_ScheduleOfRegulatoryAssetsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of regulatory liabilities. Detailed information about liabilities that result from rate actions of a regulator. Rate actions of a regulator can impose a liability on a regulated enterprise resulting in a regulatory liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 405 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6500807&loc=d3e48068-110394 + Details
Name: | us-gaap_ScheduleOfRegulatoryLiabilitiesTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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