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Cover Page - USD ($)
 12 Months Ended
Sep. 30, 2021
Nov. 05, 2021
Mar. 31, 2021
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Sep. 30, 2021    
Current Fiscal Year End Date --09-30    
Document Transition Report false    
Entity File Number 001-12822    
Entity Registrant Name BEAZER HOMES USA, INC.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 58-2086934    
Entity Address, Address Line One 1000 Abernathy Road    
Entity Address, Address Line Two Suite 260    
Entity Address, City or Town Atlanta    
Entity Address, State or Province GA    
Entity Address, Postal Zip Code 30328    
City Area Code 770    
Local Phone Number 829-3700    
Title of 12(b) Security Common Stock, $0.001 par value    
Trading Symbol BZH    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Public Float     $ 635,661,564
Entity Common Stock, Shares Outstanding   31,294,498  
Documents Incorporated by Reference
DOCUMENTS INCORPORATED BY REFERENCE
Portions of the registrant’s Proxy Statement for the registrant’s 2021 Annual Meeting of Stockholders are incorporated by reference into Part III of this Form 10-K to the extent stated herein. The Proxy Statement will be filed within 120 days of the registrant’s fiscal year ended September 30, 2021.
    
Entity Central Index Key 0000915840    
Amendment Flag false    
Document Fiscal Year Focus 2021    
Document Fiscal Period Focus FY