XML 15 R1.htm IDEA: XBRL DOCUMENT v3.25.2
Cover - USD ($)
$ in Millions
 12 Months Ended
Apr. 30, 2025
May 31, 2025
Oct. 31, 2024
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Apr. 30, 2025    
Document Transition Report false    
Entity File Number 001-37784    
Entity Registrant Name GMS INC.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 46-2931287    
Entity Address, Address Line One 100 Crescent Centre Parkway    
Entity Address, Address Line Two Suite 800    
Entity Address, City or Town Tucker    
Entity Address, State or Province GA    
Entity Address, Postal Zip Code 30084    
City Area Code (800)    
Local Phone Number 392-4619    
Title of 12(b) Security Common Stock, par value $0.01 per share    
Trading Symbol GMS    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
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    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 3,471.3
Entity Common Stock, Shares Outstanding   38,059,080  
Documents Incorporated by Reference
Portions of the Registrant’s Definitive Proxy Statement for its 2025 Annual Meeting of Stockholders are incorporated by reference into Part III of this Annual Report on Form 10-K.
    
Entity Central Index Key 0001600438    
Current Fiscal Year End Date --04-30    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Amendment Flag false