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Separate Accounts - Schedule of Reconciliation of Separate Account Liabilities (Details) - USD ($) $ in Millions | 6 Months Ended
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Jun. 30, 2024 | Jun. 30, 2023
Separate Account, Liability [Roll Forward] |  |
Balance as of beginning-of-year | $ 158,257 |
Balance as of end-of-period | 165,199 |
Variable Annuities |  |
Separate Account, Liability [Roll Forward] |  |
Balance as of beginning-of-year | 113,356 | $ 105,573
Gross deposits | 1,925 | 1,367
Withdrawals | (6,604) | (4,915)
Policyholder assessments | (1,301) | (1,251)
Change in market performance | 9,026 | 9,950
Net transfers from (to) general account | 368 | 274
Balance as of end-of-period | 116,770 | 110,998
Cash surrender value | 115,389 | 109,501
UL and Other |  |
Separate Account, Liability [Roll Forward] |  |
Balance as of beginning-of-year | 25,150 | 20,920
Gross deposits | 695 | 821
Withdrawals | (193) | (154)
Policyholder assessments | (493) | (476)
Change in market performance | 2,335 | 2,374
Net transfers from (to) general account | (113) | (76)
Balance as of end-of-period | 27,381 | 23,409
Cash surrender value | 24,979 | 21,080
Retirement Plan Services |  |
Separate Account, Liability [Roll Forward] |  |
Balance as of beginning-of-year | 19,699 | 16,996
Gross deposits | 1,105 | 1,078
Withdrawals | (1,514) | (1,123)
Policyholder assessments | (89) | (79)
Change in market performance | 1,802 | 1,953
Net transfers from (to) general account | (10) | (36)
Balance as of end-of-period | 20,993 | 18,789
Cash surrender value | $ 20,979 | $ 18,774

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