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 | ||