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Income Taxes (Tables) | 6 Months Ended
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Jun. 30, 2017
Income Tax Disclosure [Abstract] |
Reconciliation of Income Tax Expense | The table below provides a reconciliation of income tax expense computed at the federal statutory income tax rate to the income tax provision:
| Three months ended June 30, |  | Six months ended June 30,
(in millions) | 2017 |  | 2016 |  | 2017 |  | 2016
Edison International: |  |  |  |  |  |  |
Income from continuing operations before income taxes | $ | 335 |  |  | $ | 259 |  |  | $ | 687 |  |  | $ | 591 |
Provision for income tax at federal statutory rate of 35% | 117 |  |  | 91 |  |  | 241 |  |  | 207 |
Increase in income tax from: |  |  |  |  |  |  |
State tax, net of federal benefit | 6 |  |  | 4 |  |  | 16 |  |  | 11 |
Property-related 1 | (83 | ) |  | (138 | ) |  | (196 | ) |  | (217 | )
Change related to uncertain tax positions | (6 | ) |  | 2 |  |  | (18 | ) |  | 1 |
Shared-based compensation 2 | (3 | ) |  | (4 | ) |  | (46 | ) |  | (15 | )
Other | (5 | ) |  | (6 | ) |  | (11 | ) |  | (11 | )
Total income tax expense (benefit) from continuing operations | $ | 26 |  |  | $ | (51 | ) |  | $ | (14 | ) |  | $ | (24 | )
Effective tax rate | 7.8 | % |  | (19.7 | )% |  | (2.0 | )% |  | (4.1 | )%
SCE: |  |  |  |  |  |  |
Income from continuing operations before income taxes | $ | 395 |  |  | $ | 317 |  |  | $ | 787 |  |  | $ | 683 |
Provision for income tax at federal statutory rate of 35% | 138 |  |  | 111 |  |  | 275 |  |  | 239 |
Increase in income tax from: |  |  |  |  |  |  |
State tax, net of federal benefit | 9 |  |  | 6 |  |  | 22 |  |  | 15 |
Property-related 1 | (83 | ) |  | (138 | ) |  | (196 | ) |  | (217 | )
Change related to uncertain tax positions | — |  |  | (1 | ) |  | (11 | ) |  | (2 | )
Shared-based compensation 2 | (1 | ) |  | (3 | ) |  | (9 | ) |  | (11 | )
Other | (6 | ) |  | (7 | ) |  | (12 | ) |  | (14 | )
Total income tax expense (benefit) from continuing operations | $ | 57 |  |  | $ | (32 | ) |  | $ | 69 |  |  | $ | 10 |
Effective tax rate | 14.4 | % |  | (10.1 | )% |  | 8.8 | % |  | 1.5 | %
1 | During the second quarter of 2016, SCE recorded $79 million for 2012 – 2014 incremental tax benefits related to repair deductions, which were flowed-through to customers ($133 million pre-tax).
2 | Includes state taxes for Edison International and SCE of $4 million and $1 million, respectively, for the three months ended June 30, 2017 and $10 million and $2 million, respectively, for the six months ended June 30, 2017. Includes state taxes for Edison International and SCE of $3 million and $2 million, respectively, for the six months ended June 30, 2016. Refer to Note 1 for further information.
Reconciliation of Unrecognized Tax Benefits | The following table provides a reconciliation of unrecognized tax benefits for 2017 as a result of the audit settlement:
(in millions) | Edison International |  | SCE
Balance at January 1, 2017 | $ | 471 |  |  | $ | 371 |
Tax positions taken during the current year: |  |  |
Increases | 20 |  |  | 20 |
Tax positions taken during a prior year: |  |  |
Increases | 3 |  |  | 3 |
Decreases | — |  |  | — |
Decreases for settlements during the period | (83 | ) |  | (78 | )
Balance at June 30, 2017 | $ | 411 |  |  | $ | 316 |

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