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Income Taxes - Significant Portions of Deferred Tax Liabilities and Deferred Tax Assets (Detail) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Schedule of Deferred Income Tax Assets and Liabilities [Line Items] |  |
Deferred Tax Assets, Net of Valuation Allowance | $ 58 | $ 70
Deferred tax assets: |  |
Net operating loss and capital carryforward | 714 | 725
Deferred Tax Asset, Interest Carryforward | 58 | 66
Deferred Tax Assets, Investments | 0 | 6
Loss reserves | 42 | 38
Deferred Tax Assets, Operating Loss Carryforwards, State and Local | 8 | 8
Deferred Tax Assets, Debentures | 22 | 15
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Compensation | 5 | 6
Other | 4 | 4
Sub total deferred tax assets | 853 | 867
Valuation allowance | 795 | 796
Insurance intangible | 51 | 56
Variable interest entities | 0 | 4
Unearned premiums and credit fees | 23 | 24
Other | 3 | 1
Deferred Tax Liabilities, Gross | 77 | 85
Deferred Tax Liabilities, Net | $ 19 | $ 15

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