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Shares And Stockholders' Equity (Components And Changes In Accumulated OCI) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Unrealized Gain (Loss) on AFS Securities [Member] |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Balance as of beginning-of-year | $ 6,777 | $ 9,611
Income tax benefit (expense) | 1,434 | 888
Less: |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax | (2) | 2
Associated amortization of DAC, VOBA, DSI, and DFEL | (5) | (4)
Income tax benefit (expense) | 1 |
Balance as of end-of-period | 1,488 | 6,324
Unrealized Gain (Loss) on AFS Securities [Member] | Gains (Losses) Arising During The Year [Member] |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Other comprehensive income (loss) before reclassifications and taxes | (10,497) | (7,420)
Unrealized Gain (Loss) on AFS Securities [Member] | Change in Foreign Currency Exchange Rate Adjustment [Member] |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Other comprehensive income (loss) before reclassifications and taxes | (71) | (44)
Unrealized Gain (Loss) on AFS Securities [Member] | Change in Deferred Insurance Charges [Member] |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Other comprehensive income (loss) before reclassifications and taxes | 3,839 | 3,287
Unrealized Gain (Loss) on Derivative Instruments [Member] |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Balance as of beginning-of-year | (103) | (402)
Change in DAC, VOBA, DSI and DFEL | 15 | 14
Income tax benefit (expense) | (27) | (30)
Less: |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax | 11 | 3
Associated amortization of DAC, VOBA, DSI, and DFEL | (2) | (1)
Income tax benefit (expense) | (2) |
Balance as of end-of-period | (3) | (284)
Unrealized Gain (Loss) on Derivative Instruments [Member] | Gains (Losses) Arising During The Year [Member] |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Other comprehensive income (loss) before reclassifications and taxes | 44 | 89
Unrealized Gain (Loss) on Derivative Instruments [Member] | Change in Foreign Currency Exchange Rate Adjustment [Member] |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Other comprehensive income (loss) before reclassifications and taxes | 75 | 47
Unrealized Gain (Loss) on Derivative Instruments [Member] | Change in Deferred Insurance Charges [Member] |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Other comprehensive income (loss) before reclassifications and taxes | 15 | 14
Foreign Currency Translation Adjustment [Member] |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Balance as of beginning-of-year | (14) | (12)
Other comprehensive income (loss) before reclassifications and taxes | (5) | 2
Less: |  |
Balance as of end-of-period | (19) | (10)
Funded Status of Employee Benefit Plans [Member] |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Balance as of beginning-of-year | (219) | (266)
Other comprehensive income (loss) before reclassifications and taxes | 4 | (3)
Less: |  |
Income tax benefit (expense) | (1) |
Balance as of end-of-period | $ (216) | $ (269)

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