Annual report pursuant to Section 13 and 15(d)

Related Parties - Additional Information (Detail)

v3.22.4
Related Parties - Additional Information (Detail) - USD ($)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Related Party Transaction [Line Items]      
Total invested capital $ 38,514,000 $ 45,417,000 $ 47,216,000
Expense related to business usage of the aircraft 1,300,000 700,000 700,000
Non-recurring guarantee 10,000,000.0    
Ryan Re Services Agreement With Geneva Re And Nationwide [Member]      
Related Party Transaction [Line Items]      
Insurance Agency Management Fee 115,000   2,500
Revenue earned from Geneva Re 1,600,000 1,700,000 $ 2,000,000.0
Receivables due from Geneva Re 2,000,000.0 4,200,000  
Geneva Re [Member]      
Related Party Transaction [Line Items]      
Total invested capital 47,000,000.0    
Equity Method Investment, Aggregate Cost 50,000,000.0    
Related Party Transaction, Due from (to) Related Party $ 200,000 $ 500,000  
Geneva Re [Member] | Geneva Re LLC [Member]      
Related Party Transaction [Line Items]      
Equity Method Investment, Ownership Percentage 50.00%    
Ryan Investment Holdings | Geneva Ryan Holdings LLC [Member]      
Related Party Transaction [Line Items]      
Equity Method Investment, Ownership Percentage 53.00%    
Ryan Investment Holdings | Ryan Specialty Group, LLC [Member]      
Related Party Transaction [Line Items]      
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners 47.00%