Commitments and Contingencies (Narratives) (Details)	9 Months Ended
	Aug. 31, 2025 USD ($) claim home	Nov. 30, 2024 USD ($)
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	$ 1,390,000,000	$ 1,330,000,000
Letters of credit outstanding	70,700,000	81,600,000
Cash deposits	76,513,000	81,939,000
Aggregate purchase price of land	1,952,560,000	2,591,130,000
LOC Facilities
Loss Contingencies [Line Items]
Letters of credit outstanding	$ 62,400,000	73,300,000
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	$ 22,000,000.0	$ 22,600,000
Chapter 558 of the Florida Statutes
Loss Contingencies [Line Items]
Number of new claims filed | claim	269
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