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Income Tax (Tax Effects of Temporary Differences that Give Rise to Significant Portions of the Deferred Income Tax Asset and Liabilities) (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
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Deferred Tax Assets, Net [Abstract] |  |
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals | $ 85 | $ 92
Deferred Tax Assets, Operating Loss Carryforwards | 251 | 254
Deferred Tax Assets, Tax Credit Carryforwards | 50 | 0
Deferred Tax Assets, Other Tax Carryforwards | 3 | 0
Deferred Tax Assets, Gross | 389 | 346
Deferred Tax Assets, Valuation Allowance | (218) | (251)
Deferred Tax Assets, Net | 171 | 95
Deferred Tax Liabilities [Abstract] |  |
Deferred Tax Liabilities, Deferred Expense, Deferred Policy Acquisition Cost | 754 | 775
Deferred Tax Liabilities Reinsurance Transactions | 1,085 | 1,105
Deferred Tax Liabilities, Investments | 793 | 1,043
Deferred Tax Liabilities, Undistributed Foreign Earnings | 260 | 354
Deferred Tax Liabilities, Unrealized Currency Transaction Gains | 66 | 40
Deferred Tax Liabilities, Prepaid Expenses | 58 | 20
Total Deferred Income Tax Liabilities | 3,016 | 3,339
Deferred Tax Liabilities, Net | 2,845 | 3,244
Balance Sheet Presentation Of Deferred Tax Liabilities [Abstract] |  |
Deferred Tax Assets, Other | 41 | 19
Deferred income taxes | 2,886 | 3,263
Deferred Tax Liabilities, Net | 2,845 | 3,244
Deferred Tax Liabilities, Other | $ 0 | $ 2

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