Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

Document and Entity Information - shares
9 Months Ended
Sep. 30, 2023
Oct. 24, 2023
Cover page.    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2023  
Document Transition Report false  
Entity File Number 001-36870  
Entity Registrant Name TopBuild Corp  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 47-3096382  
Entity Address, Address Line One 475 North Williamson Boulevard  
Entity Address, City or Town Daytona Beach  
Entity Address, State or Province FL  
Entity Address, Postal Zip Code 32114  
City Area Code 386  
Local Phone Number 304-2200  
Title of 12(b) Security Common stock, par value $0.01 per share  
Trading Symbol BLD  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   31,773,944
Amendment Flag false  
Entity Central Index Key 0001633931  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2023  
Document Fiscal Period Focus Q3