v3.26.1
Fair Value Measurements - Components of Other Investments and Methods Used in Estimating Fair Values (Details) - 10.50% Surplus Note
3 Months Ended
Mar. 31, 2026
Debt Instrument [Line Items]  
Promissory interest rate 10.50%
Debt instrument, maturity date 2030
Valuation Methodology Discounted cash flow method/Level 3 inputs