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Contractholder Funds - Schedule of Balances and Changes in Contractholder Funds (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Policyholder Account Balance [Roll Forward] |  |  |
Balance, beginning of year | $ 56,404 |  |
Balance, end of period | 57,823 |  | $ 56,404
Embedded derivative adjustment | 3 | $ 5 |
Gross liability, end of period | 57,823 |  | 56,404
Reinsurance recoverable, net of allowance for expected credit losses | 14,756 |  | 13,380
Indexed annuities |  |  |
Policyholder Account Balance [Roll Forward] |  |  |
Balance, beginning of year | 30,235 | 27,164 | 27,164
Issuances | 1,463 |  | 6,649
Premiums received | 617 |  | 120
Policy charges | (660) |  | (195)
Surrenders and withdrawals | (251) |  | (3,832)
Benefit payments | (726) |  | (495)
Interest credited | 200 |  | 821
Other | 1 |  | 3
Balance, end of period | 30,879 |  | 30,235
Issuances | 1,463 |  | 6,649
Premiums received | 617 |  | 120
Policy charges | (660) |  | (195)
Surrenders and withdrawals | (251) |  | (3,832)
Benefit payments | (726) |  | (495)
Interest credited | 200 |  | 821
Other | 1 |  | 3
Reconciling items | 46 |  |
Embedded derivative adjustment |  |  | 219
Gross liability, end of period | 30,925 |  | 30,454
Reinsurance recoverable, net of allowance for expected credit losses | 1,233 |  | 861
Net liability, after reinsurance | $ 29,692 |  | $ 29,593
Weighted-average crediting rate | 2.65% |  | 2.90%
Cash surrender value | $ 28,462 |  | $ 27,865
Fixed rate annuities |  |  |
Policyholder Account Balance [Roll Forward] |  |  |
Balance, beginning of year | 17,442 | 13,443 | 13,443
Issuances | 564 |  | 5,125
Premiums received | 0 |  | 1
Policy charges | 0 |  | 0
Surrenders and withdrawals | (59) |  | (1,479)
Benefit payments | (256) |  | (315)
Interest credited | 195 |  | 667
Other | (1) |  | 0
Balance, end of period | 17,885 |  | 17,442
Issuances | 564 |  | 5,125
Premiums received | 0 |  | 1
Policy charges | 0 |  | 0
Surrenders and withdrawals | (59) |  | (1,479)
Benefit payments | (256) |  | (315)
Interest credited | 195 |  | 667
Other | (1) |  | 0
Reconciling items | 0 |  |
Embedded derivative adjustment |  |  | 0
Gross liability, end of period | 17,885 |  | 17,442
Reinsurance recoverable, net of allowance for expected credit losses | 12,006 |  | 11,009
Net liability, after reinsurance | $ 5,879 |  | $ 6,433
Weighted-average crediting rate | 4.52% |  | 4.42%
Cash surrender value | $ 16,712 |  | $ 16,266
Universal Life |  |  |
Policyholder Account Balance [Roll Forward] |  |  |
Balance, beginning of year | 2,817 | 2,391 | 2,391
Issuances | 54 |  | 208
Premiums received | 141 |  | 495
Policy charges | (90) |  | (315)
Surrenders and withdrawals | (8) |  | (101)
Benefit payments | (24) |  | (18)
Interest credited | 45 |  | 157
Other | 0 |  | 0
Balance, end of period | 2,935 |  | 2,817
Issuances | 54 |  | 208
Premiums received | 141 |  | 495
Policy charges | (90) |  | (315)
Surrenders and withdrawals | (8) |  | (101)
Benefit payments | (24) |  | (18)
Interest credited | 45 |  | 157
Other | 0 |  | 0
Reconciling items | 47 |  |
Embedded derivative adjustment |  |  | 79
Gross liability, end of period | 2,982 |  | 2,896
Reinsurance recoverable, net of allowance for expected credit losses | 873 |  | 877
Net liability, after reinsurance | $ 2,109 |  | $ 2,019
Weighted-average crediting rate | 6.45% |  | 6.20%
Net amount at risk | $ 75,933 |  | $ 74,279
Cash surrender value | 2,265 |  | 2,177
FABN |  |  |
Policyholder Account Balance [Roll Forward] |  |  |
Balance, beginning of year | 2,463 | 2,613 | 2,613
Issuances | 350 |  | 600
Premiums received | 0 |  | 0
Policy charges | 0 |  | 0
Surrenders and withdrawals | 0 |  | 0
Benefit payments | (12) |  | (820)
Interest credited | 25 |  | 71
Other | 0 |  | (1)
Balance, end of period | 2,826 |  | 2,463
Issuances | 350 |  | 600
Premiums received | 0 |  | 0
Policy charges | 0 |  | 0
Surrenders and withdrawals | 0 |  | 0
Benefit payments | (12) |  | (820)
Interest credited | 25 |  | 71
Other | 0 |  | (1)
Reconciling items | 10 |  |
Embedded derivative adjustment |  |  | 0
Gross liability, end of period | 2,836 |  | 2,463
Reinsurance recoverable, net of allowance for expected credit losses | 0 |  | 0
Net liability, after reinsurance | 2,836 |  | 2,463
FHLB |  |  |
Policyholder Account Balance [Roll Forward] |  |  |
Balance, beginning of year | 2,852 | $ 2,539 | 2,539
Issuances | 1,025 |  | 1,804
Premiums received | 0 |  | 0
Policy charges | 0 |  | 0
Surrenders and withdrawals | 0 |  | 0
Benefit payments | (1,003) |  | (1,606)
Interest credited | 27 |  | 117
Other | 0 |  | (2)
Balance, end of period | 2,901 |  | 2,852
Issuances | 1,025 |  | 1,804
Premiums received | 0 |  | 0
Policy charges | 0 |  | 0
Surrenders and withdrawals | 0 |  | 0
Benefit payments | (1,003) |  | (1,606)
Interest credited | 27 |  | 117
Other | 0 |  | (2)
Reconciling items | 0 |  |
Embedded derivative adjustment |  |  | 0
Gross liability, end of period | 2,901 |  | 2,852
Reinsurance recoverable, net of allowance for expected credit losses | 0 |  | 0
Net liability, after reinsurance | $ 2,901 |  | $ 2,852

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