v2.4.0.6
Document And Entity Information
9 Months Ended
Sep. 30, 2011
Nov. 01, 2011
Document And Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2011  
Document Fiscal Year Focus 2011  
Document Fiscal Period Focus Q3  
Entity Registrant Name BROWN & BROWN INC  
Entity Central Index Key 0000079282  
Current Fiscal Year End Date --12-31  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding   143,377,168