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Summary of Significant Accounting Policies (Policies) | 9 Months Ended
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Sep. 30, 2021
Accounting Policies [Abstract] |
Organization and Basis of Presentation | Organization and Basis of Presentation Edison International is the parent holding company of Southern California Edison Company ("SCE") and Edison Energy Group, Inc. ("Edison Energy Group"). SCE is an investor-owned public utility primarily engaged in the business of supplying and delivering electricity to an approximately 50,000 square mile area of Southern California. Edison Energy Group is an indirect wholly-owned subsidiary of Edison International and a holding company for Edison Energy, LLC ("Edison Energy") which is engaged in the competitive business of providing data driven energy solutions to commercial, institutional and industrial customers. Edison Energy's business activities are currently not material to report as a separate business segment. These combined notes to the consolidated financial statements apply to both Edison International and SCE unless otherwise described. Edison International's consolidated financial statements include the accounts of Edison International, SCE, and other wholly owned and controlled subsidiaries. References to Edison International refer to the consolidated group of Edison International and its subsidiaries. References to "Edison International Parent and Other" refer to Edison International Parent and its competitive subsidiaries and "Edison International Parent" refer to Edison International on a stand-alone basis, not consolidated with its subsidiaries. SCE's consolidated financial statements include the accounts of SCE, its wholly owned and controlled subsidiaries and a variable interest entity of which SCE is the primary beneficiary, SCE Recovery Funding LLC. All intercompany transactions have been eliminated from the consolidated financial statements. Edison International's and SCE's significant accounting policies were described in the "Notes to Consolidated Financial Statements" included in Edison International's and SCE's combined Annual Report on Form 10-K for the year ended December 31, 2020 (the "2020 Form 10-K"). This quarterly report should be read in conjunction with the financial statements and notes included in the 2020 Form 10-K. In the opinion of management, all adjustments, consisting only of adjustments of a normal recurring nature, have been made that are necessary to fairly state the consolidated financial position, results of operations, and cash flows in accordance with accounting principles generally accepted in the United States ("GAAP") for the periods covered by this quarterly report on Form 10-Q. The results of operations for the three-month and nine-month periods ended September 30, 2021 are not necessarily indicative of the operating results for the full year. Certain prior period amounts have been conformed to the current period's presentation. The December 31, 2020 financial statement data was derived from audited financial statements but does not include all disclosures required by GAAP.
Cash, Cash Equivalents and Restricted Cash | Cash, Cash Equivalents and Restricted Cash Cash equivalents include investments in money market funds. Generally, the carrying value of cash equivalents equals the fair value, as these investments have original maturities of three months or less. The cash equivalents were as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Edison International | ​ | SCE
​ | ​ | September 30, | ​ | December 31, | ​ | September 30, | ​ | December 31,
(in millions) | ​ | 2021 |  | 2020 |  | 2021 |  | 2020
Money market funds | ​ | $ | 463 | ​ | $ | 62 | ​ | $ | 438 | ​ | $ | 38
​ Cash is temporarily invested until required for check clearing. Checks issued, but not yet paid by the financial institution, are reclassified from cash to accounts payable at the end of each reporting period as follows:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Edison International |  | SCE | ​
​ | ​ | September 30, | ​ | December 31, | ​ | September 30, | ​ | December 31, | ​
(in millions) |  | 2021 |  | 2020 |  | 2021 |  | 2020 | ​
Book balances reclassified to accounts payable | ​ | $ | 33 | ​ | $ | 69 | ​ | $ | 33 | ​ | $ | 69 | ​
​ The following table sets forth the cash, cash equivalents and restricted cash included in the consolidated statements of cash flows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, |  | December 31,
(in millions) |  | 2021 |  | 2020
Edison International: | ​ |  | ​ | ​ |  | ​
Cash and cash equivalents | ​ | $ | 524 | ​ | $ | 87
Short-term restricted cash1 | ​ |  | 1 | ​ |  | 2
Total cash, cash equivalents, and restricted cash | ​ | $ | 525 | ​ | $ | 89
SCE: | ​ |  | ​ | ​ |  |
Cash and cash equivalents | ​ | $ | 484 | ​ | $ | 55
Short-term restricted cash1 | ​ |  | 1 | ​ |  | 1
Total cash, cash equivalents, and restricted cash | ​ | $ | 485 | ​ | $ | 56
1 | Reflected in "Other current assets" on Edison International's and SCE's consolidated balance sheets.
Allowance for Uncollectible Accounts | Allowance for Uncollectible Accounts The allowance for uncollectible accounts is recorded based on SCE's estimate of expected credit losses and adjusted over the life of the receivables as needed. Since the customer base of SCE is concentrated in Southern California and exposes SCE to a homogeneous set of economic conditions, the allowance is measured on a collective basis on the historical amounts written-off, assessment of customer collectability and current economic trends, including unemployment rates and any likelihood of recession for the region. At September 30, 2021, this included the estimated impacts of the COVID-19 pandemic. The following tables set forth the changes in allowance for uncollectible accounts for SCE: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended | ​ | Three months ended
​ | ​ | September 30, 2021 | ​ | September 30, 2020
(in millions) | ​ | Customers | ​ | ​ | All others | ​ | ​ | Total | ​ | Customers | ​ | ​ | All others | ​ | ​ | Total
Beginning balance |  | $ | 254 |  | $ | 16 | ​ | $ | 270 | ​ | $ | 75 |  | $ | 15 | ​ | $ | 90
Plus: current period provision for uncollectible accounts | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Included in operation and maintenance expenses in earning activities1 | ​ |  | 9 | ​ |  | 4 | ​ |  | 13 | ​ |  | 11 | ​ |  | 4 | ​ |  | 15
Included in operation and maintenance expenses in cost-recovery activities2 | ​ | ​ | 52 | ​ | ​ | — | ​ | ​ | 52 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
Deferred to regulatory memorandum accounts | ​ |  | 7 | ​ |  | — | ​ |  | 7 | ​ |  | 43 | ​ |  | — | ​ |  | 43
Less: write-offs, net of recoveries | ​ |  | 1 | ​ |  | 3 | ​ |  | 4 | ​ |  | 5 | ​ |  | 2 | ​ |  | 7
Ending balance |  | $ | 321 |  | $ | 17 | ​ | $ | 338 | ³ | $ | 124 |  | $ | 17 | ​ | $ | 141
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Nine months ended | ​ | Nine months ended
​ | ​ | September 30, 2021 | ​ | September 30, 2020
(in millions) | ​ | Customers | ​ | ​ | All others | ​ | ​ | Total | ​ | Customers | ​ | ​ | All others | ​ | ​ | Total
Beginning balance |  | $ | 175 |  | $ | 13 | ​ | $ | 188 | ​ | $ | 35 |  | $ | 14 | ​ | $ | 49
Plus: current period provision for uncollectible accounts | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Included in operation and maintenance expenses in earning activities1 | ​ |  | 27 | ​ |  | 11 | ​ |  | 38 | ​ |  | 39 | ​ |  | 11 | ​ |  | 50
Included in operation and maintenance expenses in cost-recovery activities2 | ​ | ​ | 112 | ​ | ​ | — | ​ | ​ | 112 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
Deferred to regulatory memorandum accounts | ​ |  | 13 | ​ |  | — | ​ |  | 13 | ​ |  | 64 | ​ |  | — | ​ |  | 64
Less: write-offs, net of recoveries | ​ |  | 6 | ​ |  | 7 | ​ |  | 13 | ​ |  | 14 | ​ |  | 8 | ​ |  | 22
Ending balance |  | $ | 321 |  | $ | 17 | ​ | $ | 338 | ³ | $ | 124 |  | $ | 17 | ​ | $ | 141
1 | Earning activities is one of SCE's disaggregated revenue sources. Please refer to Note 7 for further details.
2 | Cost-recovery activities is one of SCE's disaggregated revenue sources. Please refer to Note 7 for further details. This portion of costs from the allowance for uncollectible expenses is recovered through the residential uncollectibles balancing account. See Note 11 for further details.
3 | In June 2021, CPUC issued a decision to allow residential and small business customers of the large investor-owned utilities with arrearages over 60 days old to be enrolled in 24-month payment plans. Accordingly, approximately $199 million of gross account receivables and $93 million of allowance for uncollectible accounts have been reclassified to "Long-term account receivables" on Edison International's and SCE's consolidated balance sheets as of September 30, 2021.
Nuclear Decommissioning and Asset Retirement Obligations | Nuclear Decommissioning and Asset Retirement Obligations As a result of an update to SCE's cost estimate for decommissioning activities to be completed at San Onofre Units 1, 2 and 3, SCE recorded a decrease of $131 million to its asset retirement obligation ("ARO") in the third quarter of 2021.
Revenue Recognition | Revenue Recognition Regulatory Proceedings 2021 General Rate Case SCE accounts for regulatory decisions in the period in which they are received and, accordingly, recorded the impact of the 2021 GRC decision in the third quarter of 2021. In the absence of a final decision in the 2021 GRC, SCE recognized revenue in the first and second quarter of 2021 based on the 2020 GRC authorized revenue requirement. The final decision, received in August 2021, authorized a base rate revenue requirement of $6.9 billion in 2021, an increase of $1.0 billion over revenue requirements authorized for 2020 in the 2018 GRC. See Note 11 for further information.
Employee Stock Purchase Plan | Employee Stock Purchase Plan In April 2021, the Edison International Employee Stock Purchase Plan ("ESPP") was approved by the shareholders and was effective beginning July 1, 2021. The maximum aggregate numbers of shares of Edison International's common stock that may be issued under the ESPP is 3,000,000 shares. The ESPP is administered by the SCE Benefits Committee and allows eligible employees to purchase shares of common stock. Eligible employees may authorize payroll deductions of between 1% and 10% of their compensation, up to a maximum of $25,000, to purchase shares of common stock at 97% of the market price of the common stock on the date of purchase, which is the last day of each six months offering period. The ESPP is considered non-compensatory and stock issuances under the ESPP will be recorded directly in equity.
Earnings Per Share | Earnings Per Share Edison International computes earnings per common share ("EPS") using the two-class method, which is an earnings allocation formula that determines EPS for each class of common stock and participating security. Edison International's participating securities are stock-based compensation awards, payable in common shares, which earn dividend equivalents on an equal basis with common shares once the awards are vested. See Note 14 for further information. EPS attributable to Edison International common shareholders was computed as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Three months ended September 30, |  | Nine months ended September 30,
(in millions, except per-share amounts) |  | 2021 |  | 2020 |  | 2021 |  | 2020
Basic earnings per share: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net (loss) income attributable to common shareholders | ​ | $ | (341) | ​ | $ | (288) | ​ | $ | 236 | ​ | $ | 213
Participating securities dividends | ​ |  | — | ​ |  | — | ​ |  | — | ​ | ​ | —
Net (loss) income available to common shareholders | ​ | $ | (341) | ​ | $ | (288) | ​ | $ | 236 | ​ | $ | 213
Weighted average common shares outstanding | ​ |  | 380 | ​ |  | 378 | ​ |  | 380 | ​ | ​ | 371
Basic (loss) earnings per share | ​ | $ | (0.90) | ​ | $ | (0.76) | ​ | $ | 0.62 | ​ | $ | 0.57
Diluted (loss) earnings per share: | ​ |  | ​ | ​ | ​ | ​ | ​ |  | ​ | ​ | ​ | ​
Net (loss) income attributable to common shareholders | ​ | $ | (341) | ​ | $ | (288) | ​ | $ | 236 | ​ | $ | 213
Participating securities dividends | ​ |  | — | ​ |  | — | ​ |  | — | ​ | ​ | —
Net (loss) income available to common shareholders | ​ | $ | (341) | ​ | $ | (288) | ​ | $ | 236 | ​ | $ | 213
Income impact of assumed conversions | ​ |  | — | ​ |  | — | ​ |  | — | ​ | ​ | —
Net (loss) income available to common shareholders and assumed conversions | ​ | $ | (341) | ​ | $ | (288) | ​ | $ | 236 | ​ | $ | 213
Weighted average common shares outstanding | ​ |  | 380 | ​ |  | 378 | ​ |  | 380 | ​ | ​ | 371
Incremental shares from assumed conversions1 | ​ |  | — | ​ |  | — | ​ |  | — | ​ | ​ | 1
Adjusted weighted average shares – diluted | ​ |  | 380 | ​ |  | 378 | ​ |  | 380 | ​ | ​ | 372
Diluted (loss) earnings per share | ​ | $ | (0.90) | ​ | $ | (0.76) | ​ | $ | 0.62 | ​ | $ | 0.57
1 | Due to the losses reported for the quarters ended September 30, 2021 and September 30, 2020, incremental shares were not included as the effect would be antidilutive.
In addition to the participating securities discussed above, Edison International also may award stock options, which are payable in common shares and are included in the diluted earnings per share calculation. Stock option awards to purchase 11,315,504 and 9,158,974 shares of common stock for the three months ended September 30, 2021 and 2020, respectively, and 11,351,651 and 9,079,789 shares of common stock for the nine months ended September 30, 2021 and 2020, respectively were outstanding, but were not included in the computation of diluted earnings per share because the effect would have been antidilutive.
Subsequent Event | Subsequent Event In October 2021, in response to a CPUC emergency reliability rulemaking proceeding, SCE contracted for the construction of utility owned storage at three sites in SCE's service territory with an aggregate capacity of 537.5 megawatts ("MW"). The storage projects are expected to result in $1.0 billion of capital expenditures, through the anticipated in-service date in the summer of 2022. In October 2021, SCE filed an advice letter requesting recovery of these forecasted expenditures and seeking balancing account treatment for the associated revenue requirement, to be reflected in rates beginning in the first quarter of 2022. Work on these projects will commence prior to approval of the advice letter. A CPUC decision on the advice letter is expected prior to the end of January 2022. SCE may terminate the contract for these projects for convenience, including if regulatory approval is not obtained. If SCE terminates the contract for convenience in January 2022, SCE could incur costs estimated to be approximately $500 million.
New Accounting Guidance | New Accounting Guidance Accounting Guidance Adopted In August 2020, the FASB issued an accounting standards update to simplify the accounting for certain financial instruments with characteristics of liabilities and equity. The amendments in this update affect entities that issue convertible instruments indexed to or potentially settled in an entity's own equity. This guidance also simplifies an entity's application of the derivatives scope exception for contracts in its own equity and amends certain aspects of the EPS guidance. Edison International and SCE have adopted this standard on January 1, 2021 using modified retrospective adoption approach. The adoption of this standard did not have a material impact on Edison International's and SCE's financial position or results of operations.

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