v3.26.1
Cover Page - shares
 6 Months Ended
Jun. 30, 2026
Jul. 30, 2026
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2026  
Document Transition Report false  
Entity File Number 001-36307  
Entity Registrant Name Installed Building Products, Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 45-3707650  
Entity Address, Address Line One 155 East Broad Street  
Entity Address, Address Line Two Suite 300  
Entity Address, City or Town Columbus  
Entity Address, State or Province OH  
Entity Address, Postal Zip Code 43215  
City Area Code 614  
Local Phone Number 221-3399  
Title of 12(b) Security Common Stock,  
Trading Symbol IBP  
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   26,579,177
Amendment Flag false  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q2  
Entity Central Index Key 0001580905  
Current Fiscal Year End Date --12-31  
Former Address    
Document Information [Line Items]    
Entity Address, Address Line One 495 South High Street  
Entity Address, Address Line Two Suite 50  
Entity Address, City or Town Columbus  
Entity Address, State or Province OH