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Contractholder Funds - Changes in Policyholder Account Balances (Details) - USD ($) $ in Millions | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2025 | Dec. 31, 2024
Changes in policyholder account balances |  |
Policyholder account balance, beginning of period | $ 26,760.3 |
Policyholder account balance, end of period | 28,769.4 | $ 26,760.3
Retirement and Income Solutions |  |
Changes in policyholder account balances |  |
Policyholder account balance, beginning of period | 20,191.1 |
Policyholder account balance, end of period | 22,258.1 | 20,191.1
Retirement and Income Solutions | Workplace savings and retirement solutions |  |
Changes in policyholder account balances |  |
Policyholder account balance, beginning of period | 13,982.8 | 12,721.5
Premiums and deposits | 4,061.0 | 4,945.1
Policy charges | (27.6) | (36.7)
Surrenders, withdrawals and benefit payments | (2,932.0) | (3,791.8)
Net transfers from (to) separate account | (364.9) | (220.5)
Interest credited | 377.6 | 395.9
Other | (19.7) | (30.7)
Policyholder account balance, end of period | $ 15,077.2 | $ 13,982.8
Weighted-average crediting rate | 3.75% | 3.26%
Cash surrender value | $ 13,813.1 | $ 12,524.6
Retirement and Income Solutions | Individual variable annuities |  |
Changes in policyholder account balances |  |
Policyholder account balance, beginning of period | 1,746.0 | 514.2
Premiums and deposits | 1,704.6 | 1,686.5
Surrenders, withdrawals and benefit payments | (1,457.6) | (2,098.2)
Net transfers from (to) separate account | 1,253.2 | 1,635.3
Interest credited | 5.1 | 8.0
Other | 1.4 | 0.2
Policyholder account balance, end of period | $ 3,252.7 | $ 1,746.0
Weighted-average crediting rate | 3.37% | 3.39%
Cash surrender value | $ 3,573.4 | $ 1,778.7
Retirement and Income Solutions | Individual fixed deferred annuities |  |
Changes in policyholder account balances |  |
Policyholder account balance, beginning of period | 4,462.3 | 5,538.3
Premiums and deposits | 20.3 | 43.2
Surrenders, withdrawals and benefit payments | (646.3) | (1,255.7)
Interest credited | 91.9 | 136.5
Policyholder account balance, end of period | $ 3,928.2 | $ 4,462.3
Weighted-average crediting rate | 3.19% | 3.09%
Cash surrender value | $ 3,709.2 | $ 4,208.5
Benefits and Protection | Life Insurance | Universal life |  |
Changes in policyholder account balances |  |
Policyholder account balance, beginning of period | 6,930.4 | 6,910.4
Premiums and deposits | 997.7 | 1,283.7
Policy charges | (662.7) | (877.1)
Surrenders, withdrawals and benefit payments | (456.3) | (591.7)
Net transfers from (to) separate account | (149.6) | (76.4)
Interest credited | 203.9 | 282.6
Other | (0.3) | (1.1)
Policyholder account balance, end of period | 6,863.1 | 6,930.4
Reinsurance impact | (3,088.9) | (3,232.8)
Policyholder account balance at end of period after reinsurance | $ 3,774.2 | $ 3,697.6
Weighted-average crediting rate | 4.02% | 4.13%
Net amount at risk | $ 86,087.9 | $ 86,141.3
Cash surrender value | $ 6,048.8 | $ 6,052.5

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