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Long-Duration Insurance Contracts - Deferred Policy Acquisition Costs, Rollforward (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] |  |  |  |
Balance, beginning of period |  |  | $ 347.2 |
Amortization expense | $ (31.5) | $ (28.1) | (91.0) | $ (82.1)
Balance, end of period | 358.3 |  | 358.3 |
Whole Life |  |  |  |
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] |  |  |  |
Balance, beginning of period | 24.6 | 23.0 | 23.8 | 22.3
Capitalizations | 0.6 | 0.8 | 1.9 | 2.2
Amortization expense | (0.3) | (0.4) | (0.9) | (1.0)
Experience adjustment | (0.1) | 0.0 | (0.1) | (0.1)
Balance, end of period | 24.8 | 23.4 | 24.8 | 23.4
Term Life |  |  |  |
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] |  |  |  |
Balance, beginning of period | 34.8 | 33.5 | 34.2 | 32.6
Capitalizations | 1.4 | 1.2 | 3.6 | 3.8
Amortization expense | (0.8) | (0.9) | (2.4) | (2.6)
Experience adjustment | (0.1) | 0.0 | (0.1) | 0.0
Balance, end of period | 35.3 | 33.8 | 35.3 | 33.8
Experience life |  |  |  |
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] |  |  |  |
Balance, beginning of period | 5.4 | 5.6 | 5.5 | 5.7
Capitalizations | 0.0 | 0.1 | 0.1 | 0.2
Amortization expense | (0.1) | (0.1) | (0.3) | (0.3)
Experience adjustment | (0.1) | 0.0 | (0.1) | 0.0
Balance, end of period | 5.3 | 5.6 | 5.3 | 5.6
Limited-Pay Whole Life |  |  |  |
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] |  |  |  |
Balance, beginning of period | 8.1 | 7.7 | 8.0 | 7.4
Capitalizations | 0.2 | 0.3 | 0.5 | 0.8
Amortization expense | (0.1) | (0.1) | (0.3) | (0.3)
Experience adjustment | (0.1) | (0.1) | (0.1) | (0.1)
Balance, end of period | 8.2 | 7.8 | 8.2 | 7.8
Indexed Universal Life |  |  |  |
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] |  |  |  |
Balance, beginning of period | 20.3 | 17.8 | 19.2 | 16.8
Capitalizations | 1.3 | 0.8 | 2.9 | 2.4
Amortization expense | (0.2) | (0.3) | (0.7) | (0.8)
Experience adjustment | (0.1) | 0.0 | (0.1) | (0.1)
Balance, end of period | 21.4 | 18.3 | 21.4 | 18.3
Supplemental health |  |  |  |
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] |  |  |  |
Balance, beginning of period | 12.1 | 9.3 | 10.6 | 8.2
Capitalizations | 1.2 | 0.8 | 3.3 | 2.4
Amortization expense | (0.4) | (0.2) | (0.9) | (0.6)
Experience adjustment | (0.1) | 0.0 | (0.2) | (0.1)
Balance, end of period | 12.8 | 9.9 | 12.8 | 9.9
Total Annuities |  |  |  |
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] |  |  |  |
Balance, beginning of period | 209.4 | 212.4 | 211.4 | 214.0
Capitalizations | 3.7 | 3.9 | 10.5 | 11.9
Amortization expense | (3.9) | (4.1) | (11.8) | (12.0)
Experience adjustment | (0.4) | (0.2) | (1.3) | (1.9)
Balance, end of period | $ 208.8 | $ 212.0 | $ 208.8 | $ 212.0

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