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Deferred Acquisition Costs and Deferred Sales Inducement Costs (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Deferred Charges, Insurers [Abstract] |  |  |
Increase (decrease) from surrenders | $ 49 |  |
Increase (decrease) from updating morality assumptions | (27) |  |
Increase (decrease) from updating discount rate | (13) |  |
Balances of and changes in DAC |  |  |
Beginning balance | 2,782 | $ 2,532 | $ 2,698
Capitalization of acquisition costs | 197 | 280 | 228
Amortization | (216) | (184) | (177)
Amortization, impact of valuation assumptions review | 8 | 60 | (100)
Impact of change in net unrealized (gains) losses on securities | 389 | 94 | (117)
Ending balance | 3,160 | 2,782 | 2,532
Balances of and changes in DSIC |  |  |
Beginning balance | 189 | 189 | 218
Capitalization of sales inducement costs | 1 | 1 | 1
Amortization | (24) | (16) | (13)
Amortization, impact of valuation assumptions review | 2 | 2 | (16)
Impact of change in net unrealized (gains) losses on securities | 15 | 13 | (1)
Ending balance | $ 183 | $ 189 | $ 189

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