Commitments and Contingencies (Narrative) (Details) $ in Thousands	12 Months Ended
	Nov. 30, 2021 USD ($) claim_filed home	Jan. 10, 2022 USD ($) executive	Nov. 30, 2020 USD ($)	Nov. 30, 2016 USD ($)
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	$ 1,110,000		$ 897,600
Letters of credit outstanding	43,200		42,100
Cash Deposits	74,509		54,634
Aggregate Purchase Price	$ 1,859,851		1,418,429
Subsequent Event
Loss Contingencies [Line Items]
Cost method investments		$ 1,800
Number of executives with ownership interests in investee companies | executive		16
Minimum
Loss Contingencies [Line Items]
Warranty on electrical and other building systems (in years)	2 years
Maximum
Loss Contingencies [Line Items]
Warranty on electrical and other building systems (in years)	5 years
LOC Facilities
Loss Contingencies [Line Items]
Letters of credit outstanding	$ 34,600		29,700
Expiration period	1 year
Damages from Product Defects
Loss Contingencies [Line Items]
Minimum number of affected homes for construction defect claims | home	2
Self Insurance
Loss Contingencies [Line Items]
Reclassification of warranty recoveries to receivables	$ 57,800		$ 60,000
Chapter 558 of the Florida Statutes
Loss Contingencies [Line Items]
Number of new claims filed | claim_filed	543
Northern California Townhome Community
Loss Contingencies [Line Items]
Estimate of possible loss				$ 25,000
Northern California Townhome Community | Minimum
Loss Contingencies [Line Items]
Range of possible loss could exceed amount accrued	$ 0
Northern California Townhome Community | Maximum
Loss Contingencies [Line Items]
Range of possible loss could exceed amount accrued	$ 3,000
Warranty Obligations
Loss Contingencies [Line Items]
Structural warranty provided by company (in years)	10 years