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Accumulated Other Comprehensive Loss (Tables) | 9 Months Ended
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Sep. 30, 2018
Equity [Abstract] |
Components of Accumulated Other Comprehensive Loss | Edison International's accumulated other comprehensive loss, net of tax, consist of:
| Three months ended September 30, |  | Nine months ended September 30,
(in millions) | 2018 |  | 2017 |  | 2018 |  | 2017
Beginning balance | $ | (44 | ) |  | $ | (48 | ) |  | $ | (43 | ) |  | $ | (53 | )
Pension and PBOP – net loss: |  |  |  |  |  |  |
Reclassified from accumulated other comprehensive loss 1 | 1 |  |  | 2 |  |  | 5 |  |  | 5 |
Other 2 | 1 |  |  | (2 | ) |  | (4 | ) |  | — |
Change | 2 |  |  | — |  |  | 1 |  |  | 5 |
Ending Balance | $ | (42 | ) |  | $ | (48 | ) |  | $ | (42 | ) |  | $ | (48 | )
1 | These items are included in the computation of net periodic pension and PBOP Plan expense. See Note 9 for additional information.
2 | Edison International recognized cumulative effect adjustments to the opening balance of retained earnings and accumulated other comprehensive loss on January 1, 2018 related to the adoption of the accounting standards update on the measurement of financial instruments. See Note 1 for further information.
SCE's accumulated other comprehensive loss, net of tax consist of:
| Three months ended September 30, |  | Nine months ended September 30,
(in millions) | 2018 |  | 2017 |  | 2018 |  | 2017
Beginning balance | $ | (21 | ) |  | $ | (18 | ) |  | $ | (19 | ) |  | $ | (20 | )
Pension and PBOP – net loss: |  |  |  |  |  |  |
Reclassified from accumulated other comprehensive loss 1 | 1 |  |  | — |  |  | 4 |  |  | 2 |
Other 2 | — |  |  | — |  |  | (5 | ) |  | — |
Change | 1 |  |  | — |  |  | (1 | ) |  | 2 |
Ending Balance | $ | (20 | ) |  | $ | (18 | ) |  | $ | (20 | ) |  | $ | (18 | )
1 | These items are included in the computation of net periodic pension and PBOP Plan expense. See Note 9 for additional information.
2 | SCE recognized cumulative effect adjustments to the opening balance of retained earnings and accumulated other comprehensive loss on January 1, 2018 related to the adoption of the accounting standards update on the measurement of financial instruments. See Note 1 for further information.

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669686-108580 + Details
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