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Commitments and Contingencies (Narratives) (Details)
 9 Months Ended
Aug. 31, 2024
USD ($)
claim
home
Nov. 30, 2023
USD ($)
Loss Contingencies [Line Items]    
Structural warranty provided by company (in years) 10 years  
Warranty for other components of home (in years) 1 year  
Performance bonds $ 1,310,000,000 $ 1,320,000,000
Letters of credit outstanding 78,900,000 19,100,000
Cash deposits 77,458,000 45,018,000
Aggregate purchase price of land 2,122,073,000 1,268,532,000
LOC Facilities    
Loss Contingencies [Line Items]    
Letters of credit outstanding $ 70,600,000 12,500,000
Expiration period 1 year  
Damages from Product Defects    
Loss Contingencies [Line Items]    
Minimum number of affected homes for construction defect claims | home 2  
Warranty Obligations    
Loss Contingencies [Line Items]    
Structural warranty provided by company (in years) 10 years  
Self Insurance    
Loss Contingencies [Line Items]    
Reclassification of warranty recoveries to receivables $ 23,100,000 $ 31,100,000
Chapter 558 of the Florida Statutes    
Loss Contingencies [Line Items]    
Number of new claims filed | claim 452  
Minimum    
Loss Contingencies [Line Items]    
Warranty on electrical and other building systems (in years) 2 years  
Insurance coverage amount for construction $ 50,000  
Maximum    
Loss Contingencies [Line Items]    
Warranty on electrical and other building systems (in years) 5 years  
Insurance coverage amount for construction $ 250,000