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Future Contract Benefits - Summary of Changes in Present Values of Expected Net Premiums and LFPB (Details) - USD ($) $ in Millions | 6 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023 | Dec. 31, 2022
Present Value of Expected LFPB |  |  |  |
Net balance as of end-of-period | $ 38,560 |  | $ 39,864 |
Payout Annuities |  |  |  |
Present Value of Expected Net Premiums |  |  |  |
Balance as of beginning-of-year | 0 | $ 0 |  |
Beginning balance at original discount rate | 0 | 0 |  |
Effect of actual variances from expected experience |  |  | 0 | $ 0
Adjusted balance as of beginning-of-year | 0 | 0 |  |
Issuances | 0 | 0 |  |
Interest accrual | 0 | 0 |  |
Net premiums collected | 0 | 0 |  |
Flooring impact of LFPB | 0 | 0 |  |
Ending balance at original discount rate | 0 | 0 |  |
Effect of cumulative changes in discount rate assumptions | 0 | 0 |  |
Balance as of end-of-period | 0 | 0 |  |
Present Value of Expected LFPB |  |  |  |
Balance as of beginning-of-year | 2,085 | 2,004 |  |
Beginning balance at original discount rate | 2,272 | 2,267 |  |
Effect of actual variances from expected experience |  |  | 3 | (2)
Adjusted balance as of beginning-of-year | 2,275 | 2,265 |  |
Issuances | 39 | 69 |  |
Interest accrual | 43 | 43 |  |
Benefit payments | (98) | (93) |  |
Ending balance at original discount rate | 2,259 | 2,284 |  |
Effect of cumulative changes in discount rate assumptions | (257) | (236) |  |
Balance as of end-of-period | 2,002 | 2,048 |  |
Net balance as of end-of-period | 2,002 | 2,048 | 2,085 |
Less: reinsurance recoverables | 1,516 | 3 |  |
Net balance as of end-of-period, net of reinsurance | $ 486 | $ 2,045 |  |
Weighted-average duration of future policyholder benefit liability | 9 years | 9 years |  |
Deferred profit liability | $ 61 | $ 53 |  |
Payout Annuities | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |
Present Value of Expected Net Premiums |  |  |  |
Balance as of beginning-of-year | 0 | 0 |  |
Present Value of Expected LFPB |  |  |  |
Balance as of beginning-of-year | (187) | (263) |  |
Traditional Life |  |  |  |
Present Value of Expected Net Premiums |  |  |  |
Balance as of beginning-of-year | 6,200 | 6,063 |  |
Beginning balance at original discount rate | 6,348 | 6,645 |  |
Effect of actual variances from expected experience |  |  | (40) | (276)
Adjusted balance as of beginning-of-year | 6,308 | 6,369 |  |
Issuances | 206 | 330 |  |
Interest accrual | 125 | 120 |  |
Net premiums collected | (403) | (406) |  |
Flooring impact of LFPB | 2 | 1 |  |
Ending balance at original discount rate | 6,238 | 6,414 |  |
Effect of cumulative changes in discount rate assumptions | (321) | (327) |  |
Balance as of end-of-period | 5,917 | 6,087 |  |
Present Value of Expected LFPB |  |  |  |
Balance as of beginning-of-year | 10,041 | 9,572 |  |
Beginning balance at original discount rate | 10,230 | 10,357 |  |
Effect of actual variances from expected experience |  |  | (45) | $ (300)
Adjusted balance as of beginning-of-year | 10,185 | 10,057 |  |
Issuances | 206 | 330 |  |
Interest accrual | 199 | 191 |  |
Benefit payments | (384) | (343) |  |
Ending balance at original discount rate | 10,206 | 10,235 |  |
Effect of cumulative changes in discount rate assumptions | (506) | (472) |  |
Balance as of end-of-period | 9,700 | 9,763 |  |
Net balance as of end-of-period | 3,783 | 3,676 | $ 3,841 |
Less: reinsurance recoverables | 403 | 498 |  |
Net balance as of end-of-period, net of reinsurance | $ 3,380 | $ 3,178 |  |
Weighted-average duration of future policyholder benefit liability | 9 years | 10 years |  |
Traditional Life | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |
Present Value of Expected Net Premiums |  |  |  |
Balance as of beginning-of-year | $ (148) | $ (582) |  |
Present Value of Expected LFPB |  |  |  |
Balance as of beginning-of-year | $ (189) | $ (785) |  |

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