v3.21.2

Business and Basis of Presentation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 9 Months Ended
--- | --- | ---
Sep. 17, 2021 | Sep. 30, 2021 | Sep. 30, 2020
Subsidiary or Equity Method Investee [Line Items] |  |  |
Date of incorporation or formation |  | Jul. 01, 2019 |
Proceeds from issuance of Class A common stock, net of underwriting discounts |  | $ 269,376 | $ 167,346
Baldwin Risk Partners, LLC | LLC Units |  |  |
Subsidiary or Equity Method Investee [Line Items] |  |  |
LLC Units purchased | 9,200,000 |  |
Common Class A | Private Placement | BRP Group, Inc. |  |  |
Subsidiary or Equity Method Investee [Line Items] |  |  |
Shares of stock sold | 9,200,000 |  |
Offering price per share | $ 30.50 |  |
Proceeds from issuance of Class A common stock, net of underwriting discounts | $ 269,400 |  |
Underwriting discounts and commissions | 11,200 |  |
Offering expenses | $ 1,100 |  |
Common Class A | Over-Allotment Option | BRP Group, Inc. |  |  |
Subsidiary or Equity Method Investee [Line Items] |  |  |
Shares of stock sold | 1,200,000 |  |

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