Nature of Operations	9 Months Ended
Sep. 30, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Operations	NOTE 1 Nature of Operations Brown & Brown, Inc., a Florida corporation, and its subsidiaries (collectively, “Brown & Brown” or the “Company”) is a diversified insurance agency, wholesale brokerage, insurance programs and service organization that markets and sells insurance products and services, primarily in the property, casualty and employee benefits areas. Brown & Brown’s business is divided into two reportable segments. The Retail segment provides a broad range of risk management products and services to commercial, public and quasi-public entities, and to professional and individual customers. These products and services include property and casualty insurance and reinsurance, employee benefits, private client services, captive solutions, consulting services and financial and wealth solutions, as well as non-insurance warranty services and products through the Retail segment’s automobile and recreational vehicle dealer services (“F&I”) businesses. The Specialty Distribution segment consists of our programs, wholesale brokerage and specialty businesses. The programs businesses, which act as managing general underwriters (“MGUs”), provide targeted products and services designated for specific industries, trade groups, governmental entities and market niches, which are delivered to the insured directly, to affinity groups, through wholesale brokers or through a global network of independent agents, including Brown & Brown retail agents. These products and services include specialty property and casualty insurance, financial lines, life and health benefits, reinsurance, travel/accident and health insurance, captive administrative services, warranty services and specialty packages of coverages. The wholesale brokerage businesses underwrite and place excess and surplus commercial and personal lines insurance, typically for specialized or hard-to-place types of risks, primarily through a global network of independent agents and brokers, including Brown & Brown retail agents. The specialty business offers solutions across affinity and administrative services, captives, reinsurance, travel/accident, warranty, and life & health. The Company primarily operates as an agent or broker not assuming underwriting risks. However, we also operate and/or participate in various ancillary insurance operations, including (1) reinsurance companies and stand-alone captives that assume underwriting risk; (2) series captive insurance companies (“SCICs”); (3) protected cell companies; (4) segregated account companies; (5) a quota share captive and (6) an excess of loss layer captive (collectively, the “Captives”). These respective entities are utilized for the purpose of managing SCICs, facilitating additional underwriting capacity, generating incremental revenues and/or participating in underwriting results. The Company also operates a write-your-own flood insurance carrier, Wright National Flood Insurance Company (“WNFIC”). WNFIC’s underwriting business consists of policies written pursuant to the National Flood Insurance Program (“NFIP”), the program administered by the Federal Emergency Management Agency (“FEMA”) to which premiums and underwriting exposure are ceded, and excess flood policies which are fully reinsured in the private market. In conjunction with the acquisition of RSC Topco, Inc., (“RSC” or “Accession”) the holding company for Accession Risk Management Group, Inc., in the third quarter of 2025, the Company aligned its business from three to two segments. As a result of the segment reorganization, the Company consolidated its Programs and Wholesale Brokerage segments into a new Specialty Distribution segment. The Company now reports its financial results in the following two reportable segments: Retail and Specialty Distribution. The historical results, discussion and presentation of our business segments as set forth in the accompanying Condensed Consolidated Financial Statements and these Notes reflect the impact of these changes for all periods presented in order to present segment information on a comparable basis. There is no impact on our previously reported consolidated statements of income, balance sheets, statements of cash flows, statements of comprehensive income or statements of shareholders’ equity resulting from these changes. See Note 12 of these Notes to Condensed Consolidated Financial Statements for further information.

Nature of Operations

9 Months Ended

Sep. 30, 2025

Organization, Consolidation and Presentation of Financial Statements [Abstract]

NOTE 1 Nature of Operations

Brown & Brown, Inc., a Florida corporation, and its subsidiaries (collectively, “Brown & Brown” or the “Company”) is a diversified insurance agency, wholesale brokerage, insurance programs and service organization that markets and sells insurance products and services, primarily in the property, casualty and employee benefits areas. Brown & Brown’s business is divided into two reportable segments. The Retail segment provides a broad range of risk management products and services to commercial, public and quasi-public entities, and to professional and individual customers. These products and services include property and casualty insurance and reinsurance, employee benefits, private client services, captive solutions, consulting services and financial and wealth solutions, as well as non-insurance warranty services and products through the Retail segment’s automobile and recreational vehicle dealer services (“F&I”) businesses. The Specialty Distribution segment consists of our programs, wholesale brokerage and specialty businesses. The programs businesses, which act as managing general underwriters (“MGUs”), provide targeted products and services designated for specific industries, trade groups, governmental entities and market niches, which are delivered to the insured directly, to affinity groups, through wholesale brokers or through a global network of independent agents, including Brown & Brown retail agents. These products and services include specialty property and casualty insurance, financial lines, life and health benefits, reinsurance, travel/accident and health insurance, captive administrative services, warranty services and specialty packages of coverages. The wholesale brokerage businesses underwrite and place excess and surplus commercial and personal lines insurance, typically for specialized or hard-to-place types of risks, primarily through a global network of independent agents and brokers, including Brown & Brown retail agents. The specialty business offers solutions across affinity and administrative services, captives, reinsurance, travel/accident, warranty, and life & health.

The Company primarily operates as an agent or broker not assuming underwriting risks. However, we also operate and/or participate in various ancillary insurance operations, including (1) reinsurance companies and stand-alone captives that assume underwriting risk; (2) series captive insurance companies (“SCICs”); (3) protected cell companies; (4) segregated account companies; (5) a quota share captive and (6) an excess of loss layer captive (collectively, the “Captives”). These respective entities are utilized for the purpose of managing SCICs, facilitating additional underwriting capacity, generating incremental revenues and/or participating in underwriting results. The Company also operates a write-your-own flood insurance carrier, Wright National Flood Insurance Company (“WNFIC”). WNFIC’s underwriting business consists of policies written pursuant to the National Flood Insurance Program (“NFIP”), the program administered by the Federal Emergency Management Agency (“FEMA”) to which premiums and underwriting exposure are ceded, and excess flood policies which are fully reinsured in the private market.

In conjunction with the acquisition of RSC Topco, Inc., (“RSC” or “Accession”) the holding company for Accession Risk Management Group, Inc., in the third quarter of 2025, the Company aligned its business from three to two segments. As a result of the segment reorganization, the Company consolidated its Programs and Wholesale Brokerage segments into a new Specialty Distribution segment. The Company now reports its financial results in the following two reportable segments: Retail and Specialty Distribution. The historical results, discussion and presentation of our business segments as set forth in the accompanying Condensed Consolidated Financial Statements and these Notes reflect the impact of these changes for all periods presented in order to present segment information on a comparable basis. There is no impact on our previously reported consolidated statements of income, balance sheets, statements of cash flows, statements of comprehensive income or statements of shareholders’ equity resulting from these changes. See Note 12 of these Notes to Condensed Consolidated Financial Statements for further information.