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DAC, VOBA, DSI, and DFEL (DAC) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Changes in DAC [Roll Forward] |  |  |
Balance as of beginning-of-year | $ 5,888 | $ 5,565 | $ 7,352
Business acquired (sold) through reinsurance |  | (362) | (10)
Deferrals | 1,372 | 1,373 | 1,446
Amortization, net of interest: |  |  |
Amortization, excluding unlocking, net of interest | (811) | (1,001) | (796)
Unlocking | (210) | (565) | (231)
Adjustment related to realized gains (losses) | (129) | 86 | (19)
Adjustment related to unrealized gains (losses) | 6,648 | 792 | (2,182)
Balance as of end-of-year | $ 12,758 | 5,888 | 5,565
Cumulative Effect, Period of Adoption, Adjustment [Member] |  |  |
Changes in DAC [Roll Forward] |  |  |
Balance as of beginning-of-year |  | $ 5 |
Amortization, net of interest: |  |  |
Balance as of end-of-year |  |  | $ 5

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