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DAC, VOBA, DSI, and DFEL (DFEL) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Changes in DFEL [Abstract] |  |  |
Balance as of beginning-of-year | $ 4,225 |  |
Amortization, net of interest: |  |  |
Amortization, excluding unlocking, net of interest | 257 | $ 220 | $ 815
Balance as of end-of-year | 5,052 | 4,225 |
Cumulative Effect, Period of Adoption, Adjustment [Member] |  |  |
Changes in DFEL [Abstract] |  |  |
Balance as of beginning-of-year | 3,810 |  |
Amortization, net of interest: |  |  |
Balance as of end-of-year | (617) | 3,810 |
Ul and Other [Member] |  |  |
Changes in DFEL [Abstract] |  |  |
Balance as of beginning-of-year | 3,934 | 3,298 |
Business acquired (sold) through reinsurance |  | (161) |
Deferrals | 1,061 | 988 |
Amortization, net of interest: |  |  |
Amortization, excluding unlocking, net of interest | (229) | (191) |
Balance as of end-of-year | 4,766 | 3,934 | 3,298
Variable Annuities [Member] |  |  |
Changes in DFEL [Abstract] |  |  |
Balance as of beginning-of-year | 291 | 293 |
Deferrals | 23 | 27 |
Amortization, net of interest: |  |  |
Amortization, excluding unlocking, net of interest | (28) | (29) |
Balance as of end-of-year | $ 286 | $ 291 | $ 293

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