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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2018
Income Tax Disclosure [Abstract] |
Income Tax Expense (Benefit) | Income Tax Expense (Benefit)
| For the years ended December 31,
| 2018 | 2017 | 2016
Income Tax Expense (Benefit) |  |  |
Current - U.S. Federal | $ | (18 | ) | $ | 116 |  | $ | 10 |
International | — |  | 1 |  | — |
Total current | (18 | ) | 117 |  | 10 |
Deferred - U.S. Federal | 286 |  | 866 |  | (173 | )
International | — |  | 2 |  | (3 | )
Total deferred | 286 |  | 868 |  | (176 | )
Total income tax expense (benefit) | $ | 268 |  | $ | 985 |  | $ | (166 | )
Income Tax Rate Reconciliation | Income Tax Rate Reconciliation
| For the years ended December 31,
| 2018 | 2017 | 2016
Tax provision at U.S. federal statutory rate [1] | $ | 368 |  | $ | 253 |  | $ | 157 |
Tax-exempt interest | (66 | ) | (123 | ) | (124 | )
Decrease in deferred tax valuation allowance | — |  | — |  | (79 | )
Executive Compensation | 11 |  | — |  | — |
Stock-based compensation | (5 | ) | (15 | ) | — |
Solar credits | — |  | — |  | (79 | )
Sale of the U.K. property & casualty run-off subsidiaries and foreign rate differential | — |  | 5 |  | (37 | )
Tax Reform | (39 | ) | 877 |  | — |
Other | (1 | ) | (12 | ) | (4 | )
Provision (benefit) for income taxes | $ | 268 |  | $ | 985 |  | $ | (166 | )
[1] Due to the passage of Tax Reform on December 22, 2017, current and prior period federal statutory rates are reflected at 21% and 35% respectively.
Deferred Tax Assets (Liabilities) |
| As of December 31,
| 2018 | 2017
Deferred Tax Assets |  |  |  |
Loss reserves and tax discount | $ | 150 |  | $ | 104 |
Unearned premium reserve and other underwriting related reserves | 355 |  | 352 |
Investment-related items | 183 |  | 194 |
Employee benefits | 287 |  | 313 |
General business credit carryover | 1 |  | 3 |
Net operating loss carryover | 521 |  | 710 |
Foreign tax credit carryover | — |  | 26 |
Other | — |  | 1 |
Total Deferred Tax Assets | 1,497 |  | 1,703 |
Deferred Tax Liabilities |  |
Deferred acquisition costs | (104 | ) | (103 | )
Net unrealized gains on investments | (7 | ) | (306 | )
Other depreciable and amortizable assets | (135 | ) | (130 | )
Other | (3 | ) | — |
Total Deferred Tax Liabilities | (249 | ) | (539 | )
Net Deferred Tax Asset | $ | 1,248 |  | $ | 1,164 |
Roll-forward of Unrecognized Tax Benefits | Rollforward of Unrecognized Tax Benefits
| For the years ended December 31,
| 2018 | 2017 | 2016
Balance, beginning of period | $ | 9 |  | $ | 12 |  | $ | 12 |
Gross increases - tax positions in prior period | 5 |  | 3 |  | — |
Gross decreases - tax positions in prior period | — |  | — |  | — |
Gross decreases - tax reform | — |  | (6 | ) | — |
Balance, end of period | $ | 14 |  | $ | 9 |  | $ | 12 |

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