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Income Taxes - Significant Portions of Deferred Tax Liabilities and Deferred Tax Assets (Detail) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
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Schedule of Deferred Income Tax Assets and Liabilities [Line Items] |  |
Deferred Tax Assets, Net of Valuation Allowance | $ 151 | $ 212
Deferred tax assets: |  |
Net operating loss and capital carryforward | 742 | 719
Loss reserves | 148 | 227
Deferred Tax Assets, Debentures | 29 | 23
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Compensation | 7 | 10
Other | 1 | 2
Sub total deferred tax assets | 927 | 980
Valuation allowance | 777 | 768
Insurance intangible | 90 | 151
Variable interest entities | 12 | 19
Investments | 32 | 26
Unearned premiums and credit fees | 42 | 48
Other | 8 | 8
Deferred Tax Liabilities, Gross, Noncurrent | 183 | 252
Deferred Tax Liabilities, Net | $ 32 | $ 40

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