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Compensation and Benefit Plans (Tables) | 3 Months Ended
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Mar. 31, 2013
Workforce Reductions [Abstract] |
Workforce reductions | The following table provides a summary of changes in the accrued severance liability associated with these reductions:
(in millions) |  |
Balance at January 1, 2013 |  | $ | 104 |
Additions |  | 16 |
Payments |  | (61 | )
Balance at March 31, 2013 |  | $ | 59 |
Pension Plans |
Pension and Other Postretirement Benefits |
Expense Components for Plans | Expense components are:
| Edison International |  | SCE
| Three months ended March 31,
(in millions) | 2013 |  | 2012 |  | 2013 |  | 2012
Service cost | $ | 38 |  |  | $ | 38 |  |  | $ | 37 |  |  | $ | 37 |
Interest cost | 42 |  |  | 46 |  |  | 41 |  |  | 45 |
Expected return on plan assets | (57 | ) |  | (56 | ) |  | (57 | ) |  | (55 | )
Amortization of prior service cost | 1 |  |  | 1 |  |  | 1 |  |  | 1 |
Amortization of net loss 1 | 15 |  |  | 17 |  |  | 14 |  |  | 15 |
Expense under accounting standards | $ | 39 |  |  | $ | 46 |  |  | $ | 36 |  |  | $ | 43 |
Regulatory adjustment (deferred) | 17 |  |  | 25 |  |  | 17 |  |  | 25 |
Total expense recognized | $ | 56 |  |  | $ | 71 |  |  | $ | 53 |  |  | $ | 68 |
1 | Includes the amount of net loss reclassified from other comprehensive loss. The amount reclassified for Edison International and SCE was $3 million and $2 million, respectively, for the three months ended March 31, 2013.
Postretirement Benefits Other Than Pensions |
Pension and Other Postretirement Benefits |
Expense Components for Plans | Expense components are:
| Edison International |  | SCE
| Three months ended March 31,
(in millions) | 2013 |  | 2012 |  | 2013 |  | 2012
Service cost | $ | 14 |  |  | $ | 12 |  |  | $ | 13 |  |  | $ | 12 |
Interest cost | 26 |  |  | 28 |  |  | 26 |  |  | 28 |
Expected return on plan assets | (30 | ) |  | (27 | ) |  | (30 | ) |  | (27 | )
Amortization of prior service credit | (9 | ) |  | (9 | ) |  | (9 | ) |  | (9 | )
Amortization of net loss 1 | 7 |  |  | 12 |  |  | 7 |  |  | 11 |
Total expense | $ | 8 |  |  | $ | 16 |  |  | $ | 7 |  |  | $ | 15 |
1 | Includes the amount of net loss reclassified from other comprehensive loss. The amount reclassified for Edison International and SCE was less than $1 million and zero, respectively, for the three months ended March 31, 2013.

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of restructuring and related costs by type of restructuring including the description of the restructuring costs, such as the expected cost; the costs incurred during the period; the cumulative costs incurred as of the balance sheet date; the income statement caption within which the restructuring charges recognized for the period are included; and changes to an entity's restructuring reserve that occurred during the period associated with the exit from or disposal of business activities or restructurings for each major type of cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 146 -Paragraph 20 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4) -URI http://asc.fasb.org/extlink&oid=6394695&loc=d3e140904-122747 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=6394695&loc=d3e140864-122747 + Details
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