Quarterly report [Sections 13 or 15(d)]

Revenue from Contracts with Customers - Summary of Revenue with Customers by Specialty (Details)

v3.25.3
Revenue from Contracts with Customers - Summary of Revenue with Customers by Specialty (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Disaggregation of Revenue [Line Items]        
Net commissions and fees $ 739,552 $ 588,129 $ 2,256,537 $ 1,806,264
Wholesale Brokerage        
Disaggregation of Revenue [Line Items]        
Net commissions and fees 376,788 346,666 1,214,741 1,114,240
Binding Authority        
Disaggregation of Revenue [Line Items]        
Net commissions and fees 89,636 76,497 286,110 245,762
Underwriting Management        
Disaggregation of Revenue [Line Items]        
Net commissions and fees $ 273,128 $ 164,966 $ 755,686 $ 446,262