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Shares And Stockholders' Equity (Components And Changes In Accumulated OCI) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Unrealized Gain (Loss) on AFS Securities [Member] |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Balance as of beginning-of-year | $ 6,777 | $ 9,611 | $ 5,983
Change in DAC, VOBA, DSI and DFEL | 7,369 | 1,815 | (3,569)
Income tax benefit (expense) | 3,955 | 641 | (970)
Less: |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax | (15) | 626 | (53)
Associated amortization of DAC, VOBA, DSI, and DFEL | (12) | (24) | 32
Income tax benefit (expense) | 6 | (126) | 4
Balance as of end-of-period | (7,752) | 6,777 | 9,611
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 | (25,552) | (4,669) | 7,925
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 | (322) | (145) | 180
Unrealized OTTI on AFS Securities [Member] |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Balance as of beginning-of-year |  |  | 45
Unrealized Gain (Loss) on Derivative Instruments [Member] |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Balance as of beginning-of-year | (103) | (402) | (11)
Change in DAC, VOBA, DSI and DFEL | 27 | 8 | (17)
Income tax benefit (expense) | (150) | (87) | 94
Less: |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax | 92 | 26 | 48
Associated amortization of DAC, VOBA, DSI, and DFEL | (6) | (1) | (1)
Income tax benefit (expense) | (18) | (5) | (10)
Balance as of end-of-period | 396 | (103) | (402)
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 | 378 | 246 | (257)
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 | 312 | 152 | (174)
Foreign Currency Translation Adjustment [Member] |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Balance as of beginning-of-year | (14) | (12) | (17)
Less: |  |  |
Balance as of end-of-period | (34) | (14) | (12)
Foreign Currency Translation Adjustment [Member] | Change in Foreign Currency Exchange Rate Adjustment [Member] |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Other comprehensive income (loss) before reclassifications and taxes | (20) | (2) | 5
Funded Status of Employee Benefit Plans [Member] |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Balance as of beginning-of-year | (219) | (266) | (327)
Less: |  |  |
Income tax benefit (expense) | 15 | (9) | (13)
Balance as of end-of-period | (278) | (219) | (266)
Funded Status of Employee Benefit Plans [Member] | Gains (Losses) Arising During The Year [Member] |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Other comprehensive income (loss) before reclassifications and taxes | $ (74) | $ 56 | 74
Cumulative Effect, Period of Adoption, Adjustment [Member] | Unrealized Gain (Loss) on AFS Securities [Member] |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Balance as of beginning-of-year |  |  | 45
Cumulative Effect, Period of Adoption, Adjustment [Member] | Unrealized OTTI on AFS Securities [Member] |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Balance as of beginning-of-year |  |  | $ (45)

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