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Summary of Significant Accounting Policies | 6 Months Ended
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Jun. 30, 2014
Accounting Policies [Abstract] |
Summary of Significant Accounting Policies | Summary of Significant Accounting Policies Organization and Basis of Presentation Edison International is the parent holding company of Southern California Edison Company ("SCE"). 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 International is also the parent company of subsidiaries that are engaged in competitive businesses related to the delivery or use of electricity. Such competitive 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 nonutility subsidiaries. SCE's consolidated financial statements include the accounts of SCE and its wholly owned and controlled subsidiaries. All intercompany transactions have been eliminated from the consolidated financial statements. Edison International's and SCE's significant accounting policies were described in Note 1 of "Notes to Consolidated Financial Statements" included in the 2013 Form 10-K. The same accounting policies are followed for interim reporting purposes, with the exception of accounting principles adopted as of January 1, 2014, discussed below in "—New Accounting Guidance." This quarterly report should be read in conjunction with the financial statements and notes included in the 2013 Form 10-K. In the opinion of management, all adjustments, consisting of recurring accruals, 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 of America for the periods covered by this quarterly report on Form 10-Q. The results of operations for the three- and six-month periods ended June 30, 2014 are not necessarily indicative of the operating results for the full year. The December 31, 2013 condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America. Cash Equivalents Cash equivalents included 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
(in millions) |  | June 30, 2014 |  | December 31, 2013 |  | June 30, 2014 |  | December 31, 2013
Money market funds |  | $ | 63 |  |  | $ | 68 |  |  | $ | 5 |  |  | $ | 8 |
Cash is temporarily invested until required for check clearing from the primary disbursement accounts. 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
(in millions) |  | June 30, 2014 |  | December 31, 2013 |  | June 30, 2014 |  | December 31, 2013
Book balances reclassified to accounts payable |  | $ | 148 |  |  | $ | 168 |  |  | $ | 143 |  |  | $ | 163 |
Inventory Inventory is primarily composed of materials, supplies and spare parts, and stated at the lower of cost or market, cost being determined by the average cost method. 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, including performance shares and restricted stock units, which earn dividend equivalents on an equal basis with common shares once the awards are vested. EPS attributable to Edison International common shareholders was computed as follows:
|  | Three months ended June 30, |  | Six months ended June 30,
(in millions) |  | 2014 |  | 2013 |  | 2014 |  | 2013
Basic earnings per share – continuing operations: |  |  |  |  |  |  |  |
Income (loss) from continuing operations available to common shareholders |  | $ | 352 |  |  | $ | (106 | ) |  | $ | 550 |  |  | $ | 152 |
Weighted average common shares outstanding |  | 326 |  |  | 326 |  |  | 326 |  |  | 326 |
Basic earnings per share – continuing operations |  | $ | 1.08 |  |  | $ | (0.33 | ) |  | $ | 1.69 |  |  | $ | 0.47 |
Diluted earnings per share – continuing operations: |  |  |  |  |  |  |  |
Income (loss) from continuing operations available to common shareholders |  | $ | 352 |  |  | $ | (106 | ) |  | $ | 550 |  |  | $ | 152 |
Income impact of assumed conversions |  | 1 |  |  | — |  |  | 1 |  |  | — |
Income (loss) from continuing operations available to common shareholders and assumed conversions |  | $ | 353 |  |  | $ | (106 | ) |  | $ | 551 |  |  | $ | 152 |
Weighted average common shares outstanding |  | 326 |  |  | 326 |  |  | 326 |  |  | 326 |
Incremental shares from assumed conversions |  | 3 |  |  | — |  | 1 | 3 |  |  | 3 |
Adjusted weighted average shares – diluted |  | 329 |  |  | 326 |  |  | 329 |  |  | 329 |
Diluted earnings per share – continuing operations |  | $ | 1.07 |  |  | $ | (0.33 | ) |  | $ | 1.68 |  |  | $ | 0.47 |
1 | Due to a loss for the three months ended June 30, 2013, there were no incremental shares in the computation because such shares would be considered 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 45,951 shares of common stock for the three months ended June 30, 2014, and 96,341 and 1,587,370 shares for the six months ended June 30, 2014 and 2013, respectively, were outstanding, but were not included in the computation of diluted earnings per share because the exercise price of the awards was greater than the average market price of the common shares during the respective periods and, therefore, the effect would have been antidilutive. Asset Retirement Obligation The following table summarizes the changes in SCE's ARO liability for the six month period ended June 30, 2014 and the twelve month period ended December 31, 2013, including San Onofre and Palo Verde:
(in millions) | June 30, 2014 |  | December 31, 2013
Beginning balance | $ | 3,418 |  |  | $ | 2,782 |
Accretion 1 | 106 |  |  | 182 |
Revisions | (604 | ) |  | 455 |
Liabilities settled | (1 | ) |  | (1 | )
Ending balance | $ | 2,919 |  |  | $ | 3,418 |
1 | An ARO represents the present value of a future obligation. Accretion is an increase in the liability to account for the time value of money resulting from discounting.
During the second quarter of 2014, SCE updated its decommissioning cost estimate based on a site specific assessment. The decommissioning cost estimate in 2014 dollars is $4.4 billion (SCE share – $3.3 billion) and includes costs from June 7, 2013 through to the respective completion dates to decommission San Onofre Units 2 and 3. The decommissioning cost estimate is subject to a number of estimates including the cost of burial of nuclear waste, cost of removal of property, site remediation costs as well as a number of other assumptions and estimates, including when the federal government may remove spent fuel canisters from the San Onofre site, as to which there can be no assurance. The cost estimate is subject to change and such changes may be material. SCE's share of the present value of decommissioning costs after escalation and using current discounts rates was $2.9 billion at June 30, 2014. The total ARO liability related to San Onofre Units 2 and 3 at June 30, 2014 was $2.2 billion compared to $2.7 billion at December 31, 2013. The ARO liability is lower than the present value of the decommissioning costs set forth above due to different discount rates and expected time period of expenditures. The ARO liability at June 30, 2014 was based on a discount rate of 6.30% established when the ARO liability was originally recorded in 2003. The ARO liability for San Onofre Units 2 and 3 is based on expenditures beginning in 2015 through the respective completion dates. Expenditures from June 7, 2013 through June 30, 2014 are currently recorded as operation and maintenance costs and are treated as recoverable through GRC revenues. SCE has filed a request with the CPUC to authorize early release of Nuclear Decommissioning Trust funds to recover SCE's share of costs from June 7, 2013 through the end of 2014. As discussed in Note 9, to the extent that costs are recovered from SCE's Nuclear Decommissioning Trust as decommissioning costs, SCE intends to refund such amounts to customers as provided in the San Onofre OII Settlement Agreement (as defined in Note 9). The change in estimate of the ARO liability related to San Onofre Units 2 and 3 decreased by $604 million in the second quarter of 2014 based on the updated decommissioning cost estimate for the retirement of those Units. The work plan developed for the revised estimate accelerated decommissioning activities beginning in 2013 from the prior assumption of 2022. In addition, certain activities that were previously forecasted to be completed at the end of the decommissioning period were accelerated over the next ten years. Although the changes in the decommissioning cost estimate for these activities in current dollars did not change significantly, the changes in timing, as well as revised escalation rates, reduced the present value of future decommissioning costs (using the 6.30% discount rate). New Accounting Guidance Accounting Guidance Adopted in 2014 In July 2013, the FASB issued an accounting standards update that requires that an unrecognized tax benefit be presented on the balance sheet as a reduction of a deferred tax asset for a net operating loss ("NOL") or tax credit carryforward under certain circumstances. Edison International and SCE adopted this guidance effective January 1, 2014 and it did not have a material impact on the consolidated financial statements. Accounting Guidance Not Yet Adopted On May 28, 2014, the FASB issued an accounting standards update on revenue recognition including enhanced disclosures. Under the new standard, revenue is recognized when (or as) a good or service is transferred to the customer and the customer obtains control of the good or service. Edison International and SCE are currently evaluating this new guidance which is effective January 1, 2017 and cannot determine the impact of this standard at this time.

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