Short- Duration Insurance Contracts - Narrative (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Property & Casualty | ||||
| Net Amount at Risk by Product and Guarantee [Line Items] | ||||
| Favorable (unfavorable) development of total reserves for claims occurring in prior years | $ 5.5 | $ 6.2 | $ 10.8 | $ 6.2 |
| Group Benefits | ||||
| Net Amount at Risk by Product and Guarantee [Line Items] | ||||
| Favorable (unfavorable) development of total reserves for claims occurring in prior years | $ 3.0 | $ 3.3 | $ 2.6 | $ 9.4 |