Variable Interest Entities - Narrative (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Organization, Consolidation and Presentation of Financial Statements [Abstract] | ||
| Surplus Notes and Guarantee Fund Certificates, Reciprocal Exchange | $ 36.0 | $ 22.0 |
| Surplus Notes and Guarantee Fund Certificates, Additional Reciprocal Exchange | $ 14.0 | |