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Liability for Future Policyholder Benefits - Changes in Deferred Profit Liability (Details) - USD ($) $ in Millions | 9 Months Ended
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Sep. 30, 2025 | Sep. 30, 2024
Deferred Profit Liability [Roll Forward] |  |
Balance, beginning of period | $ 412.1 | $ 337.8
Profits deferred | 118.4 | 121.1
Interest accrual | 14.9 | 12.5
Amortization | (86.6) | (82.0)
Effect of actual variances from expected experience and other changes | 1.6 | 1.2
Balance, end of period | $ 460.4 | $ 390.6

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- Definition Deferred Profit Liability + References No definition available. + Details
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- Definition Liability For Future Policy Benefit, Before Reinsurance, Deferred Profit Liability + References No definition available. + Details
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- Definition Liability For Future Policy Benefit, Before Reinsurance, Deferred Profit Liability, Amortization + References No definition available. + Details
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- Definition Liability For Future Policy Benefit, Before Reinsurance, Deferred Profit Liability, Effect of Actual Variance From Expected Experience and Change in Assumptions + References No definition available. + Details
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- Definition Liability For Future Policy Benefit, Before Reinsurance, Deferred Profit Liability, Interest Accrued + References No definition available. + Details
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- Definition Liability For Future Policy Benefit, Before Reinsurance, Deferred Profit Liability, Profits Deferred + References No definition available. + Details
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