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v3.25.3

Deferred Policy Acquisition Costs (Details) - USD ($) $ in Millions | 9 Months Ended
--- | ---
Sep. 30, 2025 | Sep. 30, 2024
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] |  |
Beginning balance | $ 630.0 | $ 591.7
Capitalizations | 464.3 | 429.4
Amortization Expense | (434.0) | (399.1)
Ending balance | 660.3 | 622.0
Variable Interest Entity, Primary Beneficiary |  |
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] |  |
Beginning balance | 1.1 | 0.1
Ending balance | 1.4 | 0.7
Operating Segments |  |
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] |  |
Beginning balance | 625.9 | 569.7
Capitalizations | 459.4 | 418.0
Amortization Expense | (426.1) | (370.7)
Ending balance | 659.2 | 617.0
Operating Segments | Specialty Property & Casualty Insurance |  |
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] |  |
Beginning balance | 162.8 | 142.7
Capitalizations | 411.0 | 365.4
Amortization Expense | (404.4) | (346.7)
Ending balance | 169.4 | 161.4
Operating Segments | Life Insurance |  |
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] |  |
Beginning balance | 463.1 | 427.0
Capitalizations | 48.4 | 52.6
Amortization Expense | (21.7) | (24.0)
Ending balance | 489.8 | 455.6
Corporate and Other |  |
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] |  |
Beginning balance | 4.1 | 22.0
Capitalizations | 4.9 | 11.4
Amortization Expense | (7.9) | (28.4)
Ending balance | 1.1 | $ 5.0
Deferred Policy Acquisition Costs, Impairment Loss | $ 2.0 |

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