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Long-Duration Insurance Contracts - Reconciliation of LFPB to Balance Sheet (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | --- | ---
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |  |  |  |
Liability for Future Policy Benefit, before Reinsurance | $ 1,761.8 | $ 1,718.0 | [1] |  |
Whole life |  |  |  |  |
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |  |  |  |
Liability for Future Policy Benefit, before Reinsurance | 298.8 | 279.5 |  |  |
Term life |  |  |  |  |
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |  |  |  |
Liability for Future Policy Benefit, before Reinsurance | 130.2 | 112.4 |  |  |
Experience life |  |  |  |  |
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |  |  |  |
Liability for Future Policy Benefit, before Reinsurance | 811.3 | 799.3 |  | $ 1,098.1 | $ 1,191.3
Limited-pay whole life |  |  |  |  |
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |  |  |  |
Liability for Future Policy Benefit, before Reinsurance | 57.4 | 49.6 |  | 73.2 | 69.5
Supplemental health |  |  |  |  |
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |  |  |  |
Liability for Future Policy Benefit, before Reinsurance | 245.6 | 264.4 |  | 359.1 | 415.5
SPIA (life contingent) |  |  |  |  |
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |  |  |  |
Liability for Future Policy Benefit, before Reinsurance | 104.2 | 103.3 |  | $ 124.7 | $ 136.5
Limited-pay whole life DPL |  |  |  |  |
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |  |  |  |
Liability for Future Policy Benefit, before Reinsurance | 4.1 | 3.2 |  |  |
SPIA (life contingent) DPL |  |  |  |  |
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |  |  |  |
Liability for Future Policy Benefit, before Reinsurance | 1.3 | 0.8 |  |  |
Reconciling items |  |  |  |  |
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |  |  |  |
Liability for Future Policy Benefit, before Reinsurance | $ 108.9 | $ 105.5 |  |  |
[1] | Recast for the adoption of ASU 2018-12. See Note 1 of the Consolidated Financial Statements

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