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Accumulated Other Comprehensive Loss (Tables) | 3 Months Ended
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Mar. 31, 2013
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] |
Components of Accumulated Other Comprehensive Loss | Accumulated other comprehensive loss, net of tax, consists of:
| Edison International |  | SCE
(in millions) | Pension and PBOP – Net Loss
Balance at January 1, 2013 | $ | (87 | ) |  | $ | (29 | )
Other comprehensive loss before reclassifications | (2 | ) |  | (4 | )
Amounts reclassified from accumulated other comprehensive loss 1 | 2 |  |  | 1 |
Net current-period other comprehensive loss | — |  |  | (3 | )
Balance at March 31, 2013 | $ | (87 | ) |  | $ | (32 | )
Reclassifications from accumulated other comprehensive loss: |  |  |
Amortization of net loss included in net income | $ | 3 |  |  | $ | 2 |
Tax expense | 1 |  |  | 1 |
Total reclassification, net of tax | $ | 2 |  |  | $ | 1 |
1 | These items are included in the computation of net periodic pension and PBOP expense. See Note 8 for additional information.

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=20435746&loc=SL7669686-108580 + Details
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