v3.8.0.1
Document and Entity Information
3 Months Ended
Feb. 28, 2018
shares
Document and Entity Information [Abstract]  
Entity Registrant Name KB HOME
Trading Symbol KBH
Entity Central Index Key 0000795266
Document Type 10-Q
Document Period End Date Feb. 28, 2018
Amendment Flag false
Document Fiscal Year Focus 2018
Document Fiscal Period Focus Q1
Current Fiscal Year End Date --11-30
Entity Filer Category Large Accelerated Filer
Entity Common Stock Shares Outstanding 87,506,230