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Compensation and Benefit Plans (Tables) | 6 Months Ended
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Jun. 30, 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 |  | 109 |
Payments |  | (88 | )
Balance at June 30, 2013 |  | $ | 125 |
Pension Plans |
Pension and Other Postretirement Benefits |
Expense Components for Plans | Expense components for continuing operations are:
| Three months ended June 30, |  | Six months ended June 30,
(in millions) | 2013 |  | 2012 |  | 2013 |  | 2012
Edison International: |  |  |  |  |  |  |
Service cost | $ | 38 |  |  | $ | 39 |  |  | $ | 76 |  |  | $ | 77 |
Interest cost | 42 |  |  | 45 |  |  | 84 |  |  | 91 |
Expected return on plan assets | (57 | ) |  | (55 | ) |  | (114 | ) |  | (111 | )
Settlement costs | 49 |  |  | — |  |  | 49 |  |  | — |
Amortization of prior service cost | 1 |  |  | 1 |  |  | 2 |  |  | 2 |
Amortization of net loss 1 | 15 |  |  | 16 |  |  | 30 |  |  | 33 |
Expense under accounting standards | $ | 88 |  |  | $ | 46 |  |  | $ | 127 |  |  | $ | 92 |
Regulatory adjustment (deferred) | (31 | ) |  | 27 |  |  | (14 | ) |  | 54 |
Total expense recognized | $ | 57 |  |  | $ | 73 |  |  | $ | 113 |  |  | $ | 146 |
SCE: |  |  |  |  |  |  |
Service cost | $ | 37 |  |  | $ | 37 |  |  | $ | 74 |  |  | $ | 74 |
Interest cost | 41 |  |  | 45 |  |  | 82 |  |  | 90 |
Expected return on plan assets | (57 | ) |  | (55 | ) |  | (114 | ) |  | (110 | )
Settlement costs | 48 |  |  | — |  |  | 48 |  |  | — |
Amortization of prior service cost | 1 |  |  | 1 |  |  | 2 |  |  | 2 |
Amortization of net loss 1 | 14 |  |  | 15 |  |  | 28 |  |  | 30 |
Expense under accounting standards | $ | 84 |  |  | $ | 43 |  |  | $ | 120 |  |  | $ | 86 |
Regulatory adjustment (deferred) | (31 | ) |  | 27 |  |  | (14 | ) |  | 54 |
Total expense recognized | $ | 53 |  |  | $ | 70 |  |  | $ | 106 |  |  | $ | 140 |
1 | Includes the amount of net loss reclassified from other comprehensive loss. The amount reclassified for Edison International and SCE was $4 million and $3 million for the three months ended June 30, 2013, respectively, and $7 million and $5 million for the six months ended June 30, 2013, respectively.
Postretirement Benefits Other Than Pensions |
Pension and Other Postretirement Benefits |
Expense Components for Plans | Expense components for continuing operations are:
| Three months ended June 30, |  | Six months ended June 30,
(in millions) | 2013 |  | 2012 |  | 2013 |  | 2012
Edison International: |  |  |  |  |  |  |
Service cost | $ | 14 |  |  | $ | 12 |  |  | $ | 28 |  |  | $ | 24 |
Interest cost | 26 |  |  | 29 |  |  | 52 |  |  | 57 |
Expected return on plan assets | (30 | ) |  | (27 | ) |  | (60 | ) |  | (54 | )
Special termination benefits 1 | 10 |  |  | — |  |  | 10 |  |  | — |
Amortization of prior service credit | (9 | ) |  | (9 | ) |  | (18 | ) |  | (18 | )
Amortization of net loss 2 | 7 |  |  | 11 |  |  | 14 |  |  | 23 |
Total expense | $ | 18 |  |  | $ | 16 |  |  | $ | 26 |  |  | $ | 32 |
SCE: |  |  |  |  |  |  |
Service cost | $ | 14 |  |  | $ | 12 |  |  | $ | 27 |  |  | $ | 24 |
Interest cost | 26 |  |  | 28 |  |  | 52 |  |  | 56 |
Expected return on plan assets | (30 | ) |  | (27 | ) |  | (60 | ) |  | (54 | )
Special termination benefits 1 | 10 |  |  | — |  |  | 10 |  |  | — |
Amortization of prior service credit | (9 | ) |  | (9 | ) |  | (18 | ) |  | (18 | )
Amortization of net loss 2 | 7 |  |  | 11 |  |  | 14 |  |  | 22 |
Total expense | $ | 18 |  |  | $ | 15 |  |  | $ | 25 |  |  | $ | 30 |
1 | Due to the reduction in workforce, SCE has incurred costs for extended retiree health care coverage.
2 | 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 for the three- and six-months ended June 30, 2013, respectively.

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