v3.8.0.1
Document and Entity Information - shares
3 Months Ended
Dec. 31, 2017
Feb. 01, 2018
Document and Entity Information [Abstract]    
Entity Registrant Name BEAZER HOMES USA INC  
Entity Central Index Key 0000915840  
Document Type 10-Q  
Document Period End Date Dec. 31, 2017  
Amendment Flag false  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q1  
Current Fiscal Year End Date --09-30  
Entity Filer Category Accelerated Filer  
Entity Common Stock, Shares Outstanding   33,618,155