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Accumulated Other Comprehensive Loss | 12 Months Ended
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Dec. 31, 2017
Equity [Abstract] |
Accumulated Other Comprehensive Loss | Accumulated Other Comprehensive Loss The changes in accumulated other comprehensive loss, net of tax, consist of:
| Edison International |  | SCE
| Years ended December 31,
(in millions) | 2017 |  | 2016 |  | 2017 |  | 2016
Beginning balance | $ | (53 | ) |  | $ | (56 | ) |  | $ | (20 | ) |  | $ | (22 | )
Pension and PBOP – net gain (loss): |  |  |  |  |  |  |
Other comprehensive income (loss) before reclassifications | 3 |  |  | (4 | ) |  | (2 | ) |  | (2 | )
Reclassified from accumulated other comprehensive loss 1 | 7 |  |  | 6 |  |  | 3 |  |  | 3 |
Other | — |  |  | 1 |  |  | — |  |  | 1 |
Change | 10 |  |  | 3 |  |  | 1 |  |  | 2 |
Ending balance | $ | (43 | ) |  | $ | (53 | ) |  | $ | (19 | ) |  | $ | (20 | )
1 | These items are included in the computation of net periodic pension and PBOP expenses. See Note 8 for additional information.

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -URI http://asc.fasb.org/topic&trid=2134417 + Details
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