Quarterly report pursuant to Section 13 or 15(d)

Related Parties - Additional Information (Detail)

v3.22.1
Related Parties - Additional Information (Detail) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2021
Jun. 13, 2019
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2020
Dec. 31, 2021
Related Party Transaction [Line Items]            
Total invested capital     $ 41,824,000     $ 45,417,000
Expense related to business usage of the aircraft     200,000 $ 200,000    
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     400,000 $ 500,000    
Receivables due from Geneva Re     $ 1,200,000     4,200,000
Geneva Ryan Holdings [Member]            
Related Party Transaction [Line Items]            
Non-controlling Interest, Ownership Percentage by Non-controlling Owners   53.00%        
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage 53.00%          
Ryan Specialty Group, LLC [Member]            
Related Party Transaction [Line Items]            
Total consideration transferred, net of cash acquired $ 48,400,000          
Common stock, Par value $ 1 $ 1   $ 1    
Shares Issued, Price Per Share   $ 4.70        
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage   47.00%        
Geneva Re [Member]            
Related Party Transaction [Line Items]            
Equity Method Investment, Ownership Percentage     50.00%      
Total invested capital     $ 47,000,000.0      
Equity Method Investment, Aggregate Cost     50,000,000.0      
Related Party Transaction, Due from (to) Related Party     $ 500,000     $ 500,000
Ryan Re [Member]            
Related Party Transaction [Line Items]            
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage 53.00%          
Ryan Investment Holdings [Member] | Geneva Ryan Holdings [Member]            
Related Party Transaction [Line Items]            
Equity Method Investment, Ownership Percentage     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%      
Total invested capital     $ 47,000,000.0      
Michael O Halleran [Member] | Consulting Arrangement with Director [Member]            
Related Party Transaction [Line Items]            
Related party transaction     100,000 $ 100,000    
Immediate Family Member of Director [Member]            
Related Party Transaction [Line Items]            
Related party transaction     300,000      
Production bonus     100,000      
Other Than The Board Of Directors [Member] | Consulting Arrangement with Director [Member]            
Related Party Transaction [Line Items]            
Related party transaction     $ 200,000