v3.26.1
Commitments and Contingencies - Schedules of Gross Written Premium Concentration of Risk (Details) - Premiums Written Gross - Customer Concentration Risk
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
AmWINS Group, Inc.    
Concentration Risk [Line Items]    
Concentration risk, percentage 28.60% 28.10%
Ryan Specialty Group Holdings, Inc.    
Concentration Risk [Line Items]    
Concentration risk, percentage 25.40% 22.80%
CRC Insurance Services, Inc.    
Concentration Risk [Line Items]    
Concentration risk, percentage 10.80% 11.20%
Marsh & McLennan Companies    
Concentration Risk [Line Items]    
Concentration risk, percentage 8.60% 14.30%