Quarterly report pursuant to Section 13 or 15(d)

Related Parties - Additional Information (Detail)

v3.23.3
Related Parties - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Related Party Transaction [Line Items]          
Total invested capital $ 45,272   $ 45,272   $ 38,514
Prepaid expense 9,577   9,577   8,584
Expense related to business usage of the aircraft $ 200 $ 300 $ 900 $ 700  
Ryan Re Services Agreement With Geneva Re And Nationwide [Member]          
Related Party Transaction [Line Items]          
Related party service fee percentage 115.00%   115.00%    
Revenue earned from Geneva Re $ 400 $ 400 $ 1,100 $ 1,200  
Receivables due from Geneva Re 1,100   1,100   2,000
Ryan Re Services Agreement with Geneva Re [Member]          
Related Party Transaction [Line Items]          
Expenses due to Geneva Re 2,200   5,400    
Geneva Re [Member]          
Related Party Transaction [Line Items]          
Related party transaction, due from (to) related party $ 100   $ 100   $ 200
Ryan Investment Holdings [Member] | Geneva Ryan Holdings [Member]          
Related Party Transaction [Line Items]          
Equity method investment, ownership percentage 53.00%   53.00%    
Ryan Investment Holdings [Member] | Ryan Specialty Group, LLC [Member]          
Related Party Transaction [Line Items]          
Non-controlling interest, ownership percentage by non-controlling owners 47.00%   47.00%    
Total invested capital $ 47,000   $ 47,000    
Prepaid Expenses and Other Current Assets [Member] | Ryan Re Services Agreement with Geneva Re [Member]          
Related Party Transaction [Line Items]          
Prepaid expense $ 6,400   $ 6,400